/// <summary>
/// Tries to load a Web Proxy based on information from the Configuration Graph.
/// </summary>
/// <param name="g">Configuration Graph.</param>
/// <param name="objNode">Object Node.</param>
/// <param name="targetType">Target Type.</param>
/// <param name="obj">Output Object.</param>
/// <returns></returns>
public bool TryLoadObject(IGraph g, INode objNode, Type targetType, out object obj)
{
obj = null;
WebProxy proxy = null;
// Can we create a Proxy?
String server = ConfigurationLoader.GetConfigurationString(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyServer)));
if (server == null)
{
return(false);
}
proxy = new WebProxy(server);
// Does the proxy have credentials attached?
String user, pwd;
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
if (user != null && pwd != null)
{
proxy.Credentials = new NetworkCredential(user, pwd);
}
obj = proxy;
return(proxy != null);
}
public void ConfigurationLookupString4()
{
Graph g = new Graph();
String value = ConfigurationLoader.GetConfigurationString(g, g.CreateBlankNode("a"), g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyType)));
Assert.Null(value);
}
/// <summary>
/// Attempts to load an Object of the given type identified by the given Node and returned as the Type that this loader generates
/// </summary>
/// <param name="g">Configuration Graph</param>
/// <param name="objNode">Object Node</param>
/// <param name="targetType">Target Type</param>
/// <param name="obj">Created Object</param>
/// <returns>True if the loader succeeded in creating an Object</returns>
public bool TryLoadObject(IGraph g, INode objNode, Type targetType, out object obj)
{
obj = null;
String server, port, db, user, pwd;
int p = -1;
//Create the URI Nodes we're going to use to search for things
INode propServer = ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyServer),
propDb = ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyDatabase);
//Get Server and Database details
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
server = "localhost";
}
db = ConfigurationLoader.GetConfigurationString(g, objNode, propDb);
if (db == null)
{
db = VirtuosoManager.DefaultDB;
}
//Get Port
port = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyPort));
if (!Int32.TryParse(port, out p))
{
p = VirtuosoManager.DefaultPort;
}
//Get user credentials
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
if (user == null || pwd == null)
{
return(false);
}
//Based on this information create a Manager if possible
switch (targetType.FullName)
{
case NonNativeVirtuosoManager:
obj = new NonNativeVirtuosoManager(server, p, db, user, pwd);
break;
case Virtuoso:
//Get Server settings
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
obj = new VirtuosoManager(server, p, db, user, pwd);
break;
}
return(obj != null);
}
/// <summary>
/// Creates a new Update Handler Configuration
/// </summary>
/// <param name="context">HTTP Context</param>
/// <param name="g">Configuration Graph</param>
/// <param name="objNode">Object Node</param>
public BaseUpdateHandlerConfiguration(IHttpContext context, IGraph g, INode objNode)
: base(context, g, objNode)
{
// Then get the Update Processor to be used
ISparqlUpdateProcessor processor;
INode procNode = ConfigurationLoader.GetConfigurationNode(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyUpdateProcessor)));
if (procNode == null)
{
throw new DotNetRdfConfigurationException("Unable to load Update Handler Configuration as the RDF configuration file does not specify a dnr:updateProcessor property for the Handler");
}
Object temp = ConfigurationLoader.LoadObject(g, procNode);
if (temp is ISparqlUpdateProcessor)
{
processor = (ISparqlUpdateProcessor)temp;
}
else
{
throw new DotNetRdfConfigurationException("Unable to load Update Handler Configuration as the RDF configuration file specifies a value for the Handlers dnr:updateProcessor property which cannot be loaded as an object which implements the ISparqlUpdateProcessor interface");
}
this._processor = processor;
// Handler Settings
this._showUpdateForm = ConfigurationLoader.GetConfigurationBoolean(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyShowUpdateForm)), this._showUpdateForm);
String defUpdateFile = ConfigurationLoader.GetConfigurationString(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyDefaultUpdateFile)));
if (defUpdateFile != null)
{
defUpdateFile = ConfigurationLoader.ResolvePath(defUpdateFile);
if (File.Exists(defUpdateFile))
{
using (StreamReader reader = new StreamReader(defUpdateFile))
{
this._defaultUpdate = reader.ReadToEnd();
reader.Close();
}
}
}
// Get the Service Description Graph
INode descripNode = ConfigurationLoader.GetConfigurationNode(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyServiceDescription)));
if (descripNode != null)
{
Object descrip = ConfigurationLoader.LoadObject(g, descripNode);
if (descrip is IGraph)
{
this._serviceDescription = (IGraph)descrip;
}
else
{
throw new DotNetRdfConfigurationException("Unable to set the Service Description Graph for the HTTP Handler identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:serviceDescription property points to an Object which could not be loaded as an object which implements the required IGraph interface");
}
}
}
public void ConfigurationLookupString1()
{
String graph = Prefixes + @"
_:a dnr:type ""literal"" .";
Graph g = new Graph();
g.LoadFromString(graph);
String value = ConfigurationLoader.GetConfigurationString(g, g.GetBlankNode("a"), g.CreateUriNode("dnr:type"));
Assert.Equal("literal", value);
}
public void ConfigurationLookupString2()
{
String graph = Prefixes + @"
_:a dnr:type <http://uri> .";
Graph g = new Graph();
g.LoadFromString(graph);
String value = ConfigurationLoader.GetConfigurationString(g, g.GetBlankNode("a"), g.CreateUriNode("dnr:type"));
Assert.Null(value);
}
public bool TryLoadObject(IGraph g, INode objNode, Type targetType, out object obj)
{
switch (targetType.FullName)
{
case FileManager:
String storeID = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyDatabase));
if (storeID != null)
{
//Supports using dnr:loadMode to specify the indexes to be used
String indices = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyLoadMode));
if (indices == null)
{
obj = new AlexandriaFileManager(ConfigurationLoader.ResolvePath(storeID));
}
else
{
obj = new AlexandriaFileManager(ConfigurationLoader.ResolvePath(storeID), this.ParseIndexTypes(indices));
}
return true;
}
//If we get here then the required dnr:database property was missing
throw new DotNetRdfConfigurationException("Unable to load the File Manager identified by the Node '" + objNode.ToString() + "' since there was no value given for the required property dnr:database");
break;
case FileDataset:
INode managerNode = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, "dnr:genericManager"));
if (managerNode == null)
{
throw new DotNetRdfConfigurationException("Unable to load the File Dataset identified by the Node '" + objNode.ToString() + "' since there we no value for the required property dnr:genericManager");
}
Object temp = ConfigurationLoader.LoadObject(g, managerNode);
if (temp is AlexandriaFileManager)
{
obj = new AlexandriaFileDataset((AlexandriaFileManager)temp);
return true;
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the File Dataset identified by the Node '" + objNode.ToString() + "' since the value for the dnr:genericManager property pointed to an Object which could not be loaded as an object of type AlexandriaFileManager");
}
break;
}
obj = null;
return false;
}
/// <summary>
/// Tries to load a SQL IO Manager based on information from the Configuration Graph
/// </summary>
/// <param name="g">Configuration Graph</param>
/// <param name="objNode">Object Node</param>
/// <param name="targetType">Target Type</param>
/// <param name="obj">Output Object</param>
/// <returns></returns>
public bool TryLoadObject(IGraph g, INode objNode, Type targetType, out Object obj)
{
ISqlIOManager manager = null;
String server, port, db, user, pwd;
//Create the URI Nodes we're going to use to search for things
INode propServer = ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyServer),
propDb = ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyDatabase);
//Get Server and Database details
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
server = "localhost";
}
db = ConfigurationLoader.GetConfigurationString(g, objNode, propDb);
if (db == null)
{
obj = null;
return(false);
}
//Get user credentials
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
//Based on this information create a Manager if possible
switch (targetType.FullName)
{
case MicrosoftSqlManager:
if (user == null || pwd == null)
{
manager = new MicrosoftSqlStoreManager(server, db);
}
else
{
manager = new MicrosoftSqlStoreManager(server, db, user, pwd);
}
break;
case MySqlManager:
if (user != null && pwd != null)
{
manager = new MySqlStoreManager(server, db, user, pwd);
}
break;
}
obj = manager;
return(manager != null);
}
public void ConfigurationLookupString3()
{
String graph = Prefixes + @"
_:a dnr:type <appsetting:ConfigurationLookupString3> .";
Graph g = new Graph();
g.LoadFromString(graph);
_testSettings.SettSetting("ConfigurationLookupString3", "literal");
String value = ConfigurationLoader.GetConfigurationString(g, g.GetBlankNode("a"), g.CreateUriNode("dnr:type"));
Assert.Equal("literal", value);
}
public void ConfigurationLookupString3()
{
String graph = Prefixes + @"
_:a dnr:type <appsetting:ConfigurationLookupString3> .";
Graph g = new Graph();
g.LoadFromString(graph);
System.Configuration.ConfigurationManager.AppSettings["ConfigurationLookupString3"] = "literal";
String value = ConfigurationLoader.GetConfigurationString(g, g.GetBlankNode("a"), g.CreateUriNode("dnr:type"));
Assert.AreEqual("literal", value);
}
/// <summary>
/// Creates a new Quick Connection
/// </summary>
/// <param name="g">Configuration Graph</param>
/// <param name="objNode">Object Node</param>
public QuickConnect(IGraph g, INode objNode)
{
this._g = g;
this._objNode = objNode;
//Get Type
String typeName = ConfigurationLoader.GetConfigurationString(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyType)));
if (typeName != null)
{
try
{
this._type = System.Type.GetType(typeName);
//Force oureslves into the catch block where we try assembly qualifiying the name
if (this._type == null)
{
throw new Exception();
}
}
catch
{
//Was it not assembly qualified? Try adding dotNetRDF to ensure it
if (!typeName.Contains(','))
{
typeName = typeName += ", dotNetRDF";
try
{
this._type = System.Type.GetType(typeName);
}
catch
{
this._type = null;
}
}
}
}
else
{
this._type = null;
}
}
/// <summary>
/// Tries to load a Permission based on information from the Configuration Graph.
/// </summary>
/// <param name="g">Configuration Graph.</param>
/// <param name="objNode">Object Node.</param>
/// <param name="targetType">Target Type.</param>
/// <param name="obj">Output Object.</param>
/// <returns></returns>
public bool TryLoadObject(IGraph g, INode objNode, Type targetType, out object obj)
{
obj = null;
IPermission result = null;
switch (targetType.FullName)
{
case Permission:
String action = ConfigurationLoader.GetConfigurationString(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyAction)));
result = new Permission(action);
break;
case PermissionSet:
IEnumerable <String> actions = from n in ConfigurationLoader.GetConfigurationData(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyAction)))
where n.NodeType == NodeType.Literal
select((ILiteralNode)n).Value;
result = new PermissionSet(actions);
break;
}
obj = result;
return(result != null);
}
/// <summary>
/// Tries to load an object based on information from the Configuration Graph
/// </summary>
/// <param name="g">Configuration Graph</param>
/// <param name="objNode">Object Node</param>
/// <param name="targetType">Target Type</param>
/// <param name="obj">Output Object</param>
/// <returns></returns>
public bool TryLoadObject(IGraph g, INode objNode, Type targetType, out object obj)
{
obj = null;
INode index = g.CreateUriNode(new Uri(FullTextHelper.FullTextConfigurationNamespace + "index"));
//INode indexer = g.CreateUriNode(new Uri(FullTextHelper.FullTextConfigurationNamespace + "indexer"));
INode searcher = g.CreateUriNode(new Uri(FullTextHelper.FullTextConfigurationNamespace + "searcher"));
INode analyzer = g.CreateUriNode(new Uri(FullTextHelper.FullTextConfigurationNamespace + "analyzer"));
INode schema = g.CreateUriNode(new Uri(FullTextHelper.FullTextConfigurationNamespace + "schema"));
INode version = g.CreateUriNode(new Uri(FullTextHelper.FullTextConfigurationNamespace + "version"));
Object tempIndex, tempAnalyzer, tempSchema;
int ver = 2900;
//Always check for the version
ver = ConfigurationLoader.GetConfigurationInt32(g, objNode, version, 2900);
switch (targetType.FullName)
{
case DefaultIndexSchema:
obj = new DefaultIndexSchema();
break;
case FullTextOptimiser:
//Need to get the Search Provider
INode providerNode = ConfigurationLoader.GetConfigurationNode(g, objNode, searcher);
if (providerNode == null)
{
throw new DotNetRdfConfigurationException("Unable to load the Full Text Optimiser specified by the Node '" + objNode.ToString() + "' as there was no value specified for the required dnr-ft:searcher property");
}
Object tempSearcher = ConfigurationLoader.LoadObject(g, providerNode);
if (tempSearcher is IFullTextSearchProvider)
{
obj = new FullTextOptimiser((IFullTextSearchProvider)tempSearcher);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Full Text Optimiser specified by the Node '" + objNode.ToString() + "' as the value specified for the dnr-ft:searcher property pointed to an object which could not be loaded as a type that implements the required IFullTextSearchProvider interface");
}
break;
case LuceneObjectsIndexer:
case LucenePredicatesIndexer:
case LuceneSubjectsIndexer:
case LuceneSearchProvider:
//For any Lucene Indexer/Search Provider need to know the Index, Analyzer and Schema to be used
//Then get the Index
tempIndex = ConfigurationLoader.GetConfigurationNode(g, objNode, index);
if (tempIndex == null)
{
throw new DotNetRdfConfigurationException("Unable to load the Lucene Indexer specified by the Node '" + objNode.ToString() + "' as there was no value specified for the required dnr-ft:index property");
}
tempIndex = ConfigurationLoader.LoadObject(g, (INode)tempIndex);
if (tempIndex is Directory)
{
//Next get the Analyzer (assume Standard if none specified)
tempAnalyzer = ConfigurationLoader.GetConfigurationNode(g, objNode, analyzer);
if (tempAnalyzer == null)
{
tempAnalyzer = new StandardAnalyzer(this.GetLuceneVersion(ver));
}
else
{
tempAnalyzer = ConfigurationLoader.LoadObject(g, (INode)tempAnalyzer);
}
if (tempAnalyzer is Analyzer)
{
//Finally get the Schema (assume Default if none specified)
tempSchema = ConfigurationLoader.GetConfigurationNode(g, objNode, schema);
if (tempSchema == null)
{
tempSchema = new DefaultIndexSchema();
}
else
{
tempSchema = ConfigurationLoader.LoadObject(g, (INode)tempSchema);
}
if (tempSchema is IFullTextIndexSchema)
{
//Now we can create the Object
switch (targetType.FullName)
{
case LuceneObjectsIndexer:
obj = new LuceneObjectsIndexer((Directory)tempIndex, (Analyzer)tempAnalyzer, (IFullTextIndexSchema)tempSchema);
break;
case LucenePredicatesIndexer:
obj = new LucenePredicatesIndexer((Directory)tempIndex, (Analyzer)tempAnalyzer, (IFullTextIndexSchema)tempSchema);
break;
case LuceneSubjectsIndexer:
obj = new LuceneSubjectsIndexer((Directory)tempIndex, (Analyzer)tempAnalyzer, (IFullTextIndexSchema)tempSchema);
break;
case LuceneSearchProvider:
//Before the Search Provider has been loaded determine whether we need to carry out auto-indexing
List <INode> sources = ConfigurationLoader.GetConfigurationData(g, objNode, g.CreateUriNode(new Uri(FullTextHelper.FullTextConfigurationNamespace + "buildIndexFor"))).ToList();
if (sources.Count > 0)
{
//If there are sources to index ensure we have an indexer to index with
INode indexerNode = ConfigurationLoader.GetConfigurationNode(g, objNode, g.CreateUriNode(new Uri(FullTextHelper.FullTextConfigurationNamespace + "buildIndexWith")));
if (indexerNode == null)
{
throw new DotNetRdfConfigurationException("Unable to load the Lucene Search Provider specified by the Node '" + objNode.ToString() + "' as there were values specified for the dnr-ft:buildIndexFor property but no dnr-ft:buildIndexWith property was found");
}
IFullTextIndexer indexer = ConfigurationLoader.LoadObject(g, indexerNode) as IFullTextIndexer;
if (indexer == null)
{
throw new DotNetRdfConfigurationException("Unable to load the Lucene Search Provider specified by the Node '" + objNode.ToString() + "' as the value given for the dnr-ft:buildIndexWith property pointed to an Object which could not be loaded as a type that implements the required IFullTextIndexer interface");
}
try
{
//For Each Source load it and Index it
foreach (INode sourceNode in sources)
{
Object source = ConfigurationLoader.LoadObject(g, sourceNode);
if (source is ISparqlDataset)
{
indexer.Index((ISparqlDataset)source);
}
else if (source is ITripleStore)
{
foreach (IGraph graph in ((ITripleStore)source).Graphs)
{
indexer.Index(graph);
}
}
else if (source is IGraph)
{
indexer.Index((IGraph)source);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Lucene Search Provider specified by the Node '" + objNode.ToString() + "' as a value given for the dnr-ft:buildIndexFor property ('" + sourceNode.ToString() + "') pointed to an Object which could not be loaded as a type that implements one of the required interfaces: IGraph, ITripleStore or ISparqlDataset");
}
}
}
finally
{
indexer.Dispose();
}
}
//Then we actually load the Search Provider
obj = new LuceneSearchProvider(this.GetLuceneVersion(ver), (Directory)tempIndex, (Analyzer)tempAnalyzer, (IFullTextIndexSchema)tempSchema);
break;
}
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Lucene Indexer specified by the Node '" + objNode.ToString() + "' as the value given for the dnr-ft:schema property pointed to an Object which could not be loaded as a type that implements the required IFullTextIndexSchema interface");
}
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Lucene Indexer specified by the Node '" + objNode.ToString() + "' as the value given for the dnr-ft:analyzer property pointed to an Object which could not be loaded as a type that derives from the required Lucene.Net.Analysis.Analyzer type");
}
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Lucene Indexer specified by the Node '" + objNode.ToString() + "' as the value given for the dnr-ft:index property pointed to an Object which could not be loaded as a type that derives from the required Lucene.Net.Store.Directory type");
}
break;
default:
try
{
if (this._luceneAnalyzerType.IsAssignableFrom(targetType))
{
if (targetType.GetConstructor(new Type[] { typeof(LucVersion) }) != null)
{
obj = Activator.CreateInstance(targetType, new Object[] { this.GetLuceneVersion(ver) });
}
else
{
obj = Activator.CreateInstance(targetType);
}
}
else if (this._luceneDirectoryType.IsAssignableFrom(targetType))
{
String dir = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyFromFile));
if (dir != null)
{
try
{
obj = Activator.CreateInstance(targetType, new Object[] { dir });
}
catch
{
MethodInfo method = targetType.GetMethod("Open", new Type[] { typeof(DirInfo) });
if (method != null)
{
obj = method.Invoke(null, new Object[] { new DirInfo(ConfigurationLoader.ResolvePath(dir)) });
}
}
}
else
{
obj = Activator.CreateInstance(targetType);
}
//Ensure the Index if necessary
if (obj != null)
{
if (ConfigurationLoader.GetConfigurationBoolean(g, objNode, g.CreateUriNode(new Uri(FullTextHelper.FullTextConfigurationNamespace + "ensureIndex")), false))
{
IndexWriter writer = new IndexWriter((Directory)obj, new StandardAnalyzer(this.GetLuceneVersion(ver)));
writer.Close();
}
}
}
}
catch
{
//Since we know we don't allow loading of all analyzers and directories we allow for users to inject other object factories
//which may know how to load those specific instances
obj = null;
}
break;
}
return(obj != null);
}
/// <summary>
/// Creates a new Base SPARQL Server Configuration based on information from a Configuration Graph
/// </summary>
/// <param name="context">HTTP Context</param>
/// <param name="g">Configuration Graph</param>
/// <param name="objNode">Object Node</param>
public BaseSparqlServerConfiguration(HttpContext context, IGraph g, INode objNode)
: base(context, g, objNode)
{
//Get the Query Processor to be used
INode procNode = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyQueryProcessor));
if (procNode != null)
{
Object temp = ConfigurationLoader.LoadObject(g, procNode);
if (temp is ISparqlQueryProcessor)
{
this._queryProcessor = (ISparqlQueryProcessor)temp;
}
else
{
throw new DotNetRdfConfigurationException("Unable to load SPARQL Server Configuration as the RDF configuration file specifies a value for the Handlers dnr:queryProcessor property which cannot be loaded as an object which implements the ISparqlQueryProcessor interface");
}
}
//SPARQL Query Default Config
this._defaultGraph = ConfigurationLoader.GetConfigurationValue(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyDefaultGraphUri)).ToSafeString();
this._defaultTimeout = ConfigurationLoader.GetConfigurationInt64(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyTimeout), this._defaultTimeout);
this._defaultPartialResults = ConfigurationLoader.GetConfigurationBoolean(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyPartialResults), this._defaultPartialResults);
//Handler Configuration
this._showQueryForm = ConfigurationLoader.GetConfigurationBoolean(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyShowQueryForm), this._showQueryForm);
String defQueryFile = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyDefaultQueryFile));
if (defQueryFile != null)
{
defQueryFile = ConfigurationLoader.ResolvePath(defQueryFile);
if (File.Exists(defQueryFile))
{
using (StreamReader reader = new StreamReader(defQueryFile))
{
this._defaultQuery = reader.ReadToEnd();
reader.Close();
}
}
}
//Get Query Syntax to use
try
{
String syntaxSetting = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertySyntax));
if (syntaxSetting != null)
{
this._syntax = (SparqlQuerySyntax)Enum.Parse(typeof(SparqlQuerySyntax), syntaxSetting);
}
}
catch (Exception ex)
{
throw new DotNetRdfConfigurationException("Unable to set the Syntax for the HTTP Handler identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:syntax property was not a valid value from the enum VDS.RDF.Parsing.SparqlQuerySyntax", ex);
}
//Get the SPARQL Describe Algorithm
INode describeNode = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyDescribeAlgorithm));
if (describeNode != null)
{
if (describeNode.NodeType == NodeType.Literal)
{
String algoClass = ((ILiteralNode)describeNode).Value;
try
{
Object desc = Activator.CreateInstance(Type.GetType(algoClass));
if (desc is ISparqlDescribe)
{
this._describer = (ISparqlDescribe)desc;
}
else
{
throw new DotNetRdfConfigurationException("Unable to set the Describe Algorithm for the HTTP Handler identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:describeAlgorithm property was not a type name of a type that implements the ISparqlDescribe interface");
}
}
catch (DotNetRdfConfigurationException)
{
throw;
}
catch (Exception ex)
{
throw new DotNetRdfConfigurationException("Unable to set the Describe Algorithm for the HTTP Handler identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:describeAlgorithm property was not a type name for a type that can be instantiated", ex);
}
}
}
//Get the Query Optimiser
INode queryOptNode = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyQueryOptimiser));
if (queryOptNode != null)
{
Object queryOpt = ConfigurationLoader.LoadObject(g, queryOptNode);
if (queryOpt is IQueryOptimiser)
{
this._queryOptimiser = (IQueryOptimiser)queryOpt;
}
else
{
throw new DotNetRdfConfigurationException("Unable to set the Query Optimiser for the HTTP Handler identified by the Node '" + queryOptNode.ToString() + "' as the value given for the dnr:queryOptimiser property points to an Object which could not be loaded as an object which implements the required IQueryOptimiser interface");
}
}
//Get the Algebra Optimisers
foreach (INode algOptNode in ConfigurationLoader.GetConfigurationData(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyAlgebraOptimiser)))
{
Object algOpt = ConfigurationLoader.LoadObject(g, algOptNode);
if (algOpt is IAlgebraOptimiser)
{
this._algebraOptimisers.Add((IAlgebraOptimiser)algOpt);
}
else
{
throw new DotNetRdfConfigurationException("Unable to set the Algebra Optimiser for the HTTP Handler identified by the Node '" + algOptNode.ToString() + "' as the value given for the dnr:algebraOptimiser property points to an Object which could not be loaded as an object which implements the required IAlgebraOptimiser interface");
}
}
//Then get the Update Processor to be used
procNode = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyUpdateProcessor));
if (procNode != null)
{
Object temp = ConfigurationLoader.LoadObject(g, procNode);
if (temp is ISparqlUpdateProcessor)
{
this._updateProcessor = (ISparqlUpdateProcessor)temp;
}
else
{
throw new DotNetRdfConfigurationException("Unable to load SPARQL Server Configuration as the RDF configuration file specifies a value for the Handlers dnr:updateProcessor property which cannot be loaded as an object which implements the ISparqlUpdateProcessor interface");
}
}
//Handler Settings
this._showUpdateForm = ConfigurationLoader.GetConfigurationBoolean(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyShowUpdateForm), this._showUpdateForm);
String defUpdateFile = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyDefaultUpdateFile));
if (defUpdateFile != null)
{
defUpdateFile = ConfigurationLoader.ResolvePath(defUpdateFile);
if (File.Exists(defUpdateFile))
{
using (StreamReader reader = new StreamReader(defUpdateFile))
{
this._defaultUpdate = reader.ReadToEnd();
reader.Close();
}
}
}
//Then get the Protocol Processor to be used
procNode = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyProtocolProcessor));
if (procNode != null)
{
Object temp = ConfigurationLoader.LoadObject(g, procNode);
if (temp is ISparqlHttpProtocolProcessor)
{
this._protocolProcessor = (ISparqlHttpProtocolProcessor)temp;
}
else
{
throw new DotNetRdfConfigurationException("Unable to load SPARQL Server Configuration as the RDF configuration file specifies a value for the Handlers dnr:protocolProcessor property which cannot be loaded as an object which implements the ISparqlHttpProtocolProcessor interface");
}
}
if (this._queryProcessor == null && this._updateProcessor == null && this._protocolProcessor == null)
{
throw new DotNetRdfConfigurationException("Unable to load SPARQL Server Configuration as the RDF configuration file does not specify at least one of a Query/Update/Protocol processor for the server using the dnr:queryProcessor/dnr:updateProcessor/dnr:protocolProcessor properties");
}
//Get the Service Description Graph
INode descripNode = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyServiceDescription));
if (descripNode != null)
{
Object descrip = ConfigurationLoader.LoadObject(g, descripNode);
if (descrip is IGraph)
{
this._serviceDescription = (IGraph)descrip;
}
else
{
throw new DotNetRdfConfigurationException("Unable to set the Service Description Graph for the HTTP Handler identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:serviceDescription property points to an Object which could not be loaded as an object which implements the required IGraph interface");
}
}
}
/// <summary>
/// Tries to load a Generic IO Manager based on information from the Configuration Graph.
/// </summary>
/// <param name="g">Configuration Graph.</param>
/// <param name="objNode">Object Node.</param>
/// <param name="targetType">Target Type.</param>
/// <param name="obj">Output Object.</param>
/// <returns></returns>
public bool TryLoadObject(IGraph g, INode objNode, Type targetType, out object obj)
{
IStorageProvider storageProvider = null;
IStorageServer storageServer = null;
SparqlConnectorLoadMethod loadMode;
obj = null;
String server, user, pwd, store, catalog, loadModeRaw;
Object temp;
INode storeObj;
// Create the URI Nodes we're going to use to search for things
INode propServer = g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyServer)),
propDb = g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyDatabase)),
propStore = g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyStore)),
propAsync = g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyAsync)),
propStorageProvider = g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyStorageProvider));
switch (targetType.FullName)
{
case AllegroGraph:
// Get the Server, Catalog and Store
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
catalog = ConfigurationLoader.GetConfigurationString(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyCatalog)));
store = ConfigurationLoader.GetConfigurationString(g, objNode, propStore);
if (store == null)
{
return(false);
}
// Get User Credentials
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
if (user != null && pwd != null)
{
storageProvider = new AllegroGraphConnector(server, catalog, store, user, pwd);
}
else
{
storageProvider = new AllegroGraphConnector(server, catalog, store);
}
break;
case AllegroGraphServer:
// Get the Server, Catalog and User Credentials
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
catalog = ConfigurationLoader.GetConfigurationString(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyCatalog)));
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
if (user != null && pwd != null)
{
storageServer = new AllegroGraphServer(server, catalog, user, pwd);
}
else
{
storageServer = new AllegroGraphServer(server, catalog);
}
break;
case DatasetFile:
// Get the Filename and whether the loading should be done asynchronously
String file = ConfigurationLoader.GetConfigurationString(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyFromFile)));
if (file == null)
{
return(false);
}
file = ConfigurationLoader.ResolvePath(file);
bool isAsync = ConfigurationLoader.GetConfigurationBoolean(g, objNode, propAsync, false);
storageProvider = new DatasetFileManager(file, isAsync);
break;
case Dydra:
throw new DotNetRdfConfigurationException("DydraConnector is no longer supported by dotNetRDF and is considered obsolete");
case FourStore:
// Get the Server and whether Updates are enabled
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
bool enableUpdates = ConfigurationLoader.GetConfigurationBoolean(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyEnableUpdates)), true);
storageProvider = new FourStoreConnector(server, enableUpdates);
break;
case Fuseki:
// Get the Server URI
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
storageProvider = new FusekiConnector(server);
break;
case InMemory:
// Get the Dataset/Store
INode datasetObj = ConfigurationLoader.GetConfigurationNode(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyUsingDataset)));
if (datasetObj != null)
{
temp = ConfigurationLoader.LoadObject(g, datasetObj);
if (temp is ISparqlDataset)
{
storageProvider = new InMemoryManager((ISparqlDataset)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the In-Memory Manager identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:usingDataset property points to an Object that cannot be loaded as an object which implements the ISparqlDataset interface");
}
}
else
{
// If no dnr:usingDataset try dnr:usingStore instead
storeObj = ConfigurationLoader.GetConfigurationNode(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyUsingStore)));
if (storeObj != null)
{
temp = ConfigurationLoader.LoadObject(g, storeObj);
if (temp is IInMemoryQueryableStore)
{
storageProvider = new InMemoryManager((IInMemoryQueryableStore)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the In-Memory Manager identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:usingStore property points to an Object that cannot be loaded as an object which implements the IInMemoryQueryableStore interface");
}
}
else
{
// If no dnr:usingStore either then create a new empty store
storageProvider = new InMemoryManager();
}
}
break;
case ReadOnly:
// Get the actual Manager we are wrapping
storeObj = ConfigurationLoader.GetConfigurationNode(g, objNode, propStorageProvider);
temp = ConfigurationLoader.LoadObject(g, storeObj);
if (temp is IStorageProvider)
{
storageProvider = new ReadOnlyConnector((IStorageProvider)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Read-Only Connector identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:genericManager property points to an Object which cannot be loaded as an object which implements the required IStorageProvider interface");
}
break;
case ReadOnlyQueryable:
// Get the actual Manager we are wrapping
storeObj = ConfigurationLoader.GetConfigurationNode(g, objNode, propStorageProvider);
temp = ConfigurationLoader.LoadObject(g, storeObj);
if (temp is IQueryableStorage)
{
storageProvider = new QueryableReadOnlyConnector((IQueryableStorage)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Queryable Read-Only Connector identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:genericManager property points to an Object which cannot be loaded as an object which implements the required IQueryableStorage interface");
}
break;
case Sesame:
case SesameV5:
case SesameV6:
// Get the Server and Store ID
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
store = ConfigurationLoader.GetConfigurationString(g, objNode, propStore);
if (store == null)
{
return(false);
}
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
if (user != null && pwd != null)
{
storageProvider = (IStorageProvider)Activator.CreateInstance(targetType, new Object[] { server, store, user, pwd });
}
else
{
storageProvider = (IStorageProvider)Activator.CreateInstance(targetType, new Object[] { server, store });
}
break;
case SesameServer:
// Get the Server and User Credentials
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
if (user != null && pwd != null)
{
storageServer = new SesameServer(server, user, pwd);
}
else
{
storageServer = new SesameServer(server);
}
break;
case Sparql:
// Get the Endpoint URI or the Endpoint
server = ConfigurationLoader.GetConfigurationString(g, objNode, new INode[] { g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyQueryEndpointUri)), g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyEndpointUri)) });
// What's the load mode?
loadModeRaw = ConfigurationLoader.GetConfigurationString(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyLoadMode)));
loadMode = SparqlConnectorLoadMethod.Construct;
if (loadModeRaw != null)
{
try
{
loadMode = (SparqlConnectorLoadMethod)Enum.Parse(typeof(SparqlConnectorLoadMethod), loadModeRaw);
}
catch
{
throw new DotNetRdfConfigurationException("Unable to load the SparqlConnector identified by the Node '" + objNode.ToString() + "' as the value given for the property dnr:loadMode is not valid");
}
}
if (server == null)
{
INode endpointObj = ConfigurationLoader.GetConfigurationNode(g, objNode, new INode[] { g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyQueryEndpoint)), g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyEndpoint)) });
if (endpointObj == null)
{
return(false);
}
temp = ConfigurationLoader.LoadObject(g, endpointObj);
if (temp is SparqlRemoteEndpoint)
{
storageProvider = new SparqlConnector((SparqlRemoteEndpoint)temp, loadMode);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the SparqlConnector identified by the Node '" + objNode.ToString() + "' as the value given for the property dnr:endpoint points to an Object which cannot be loaded as an object which is of the type SparqlRemoteEndpoint");
}
}
else
{
// Are there any Named/Default Graph URIs
IEnumerable <Uri> defGraphs = from def in ConfigurationLoader.GetConfigurationData(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyDefaultGraphUri)))
where def.NodeType == NodeType.Uri
select((IUriNode)def).Uri;
IEnumerable <Uri> namedGraphs = from named in ConfigurationLoader.GetConfigurationData(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyNamedGraphUri)))
where named.NodeType == NodeType.Uri
select((IUriNode)named).Uri;
if (defGraphs.Any() || namedGraphs.Any())
{
storageProvider = new SparqlConnector(new SparqlRemoteEndpoint(UriFactory.Create(server), defGraphs, namedGraphs), loadMode);
}
else
{
storageProvider = new SparqlConnector(UriFactory.Create(server), loadMode);
}
}
break;
case ReadWriteSparql:
SparqlRemoteEndpoint queryEndpoint;
SparqlRemoteUpdateEndpoint updateEndpoint;
// Get the Query Endpoint URI or the Endpoint
server = ConfigurationLoader.GetConfigurationString(g, objNode, new INode[] { g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyUpdateEndpointUri)), g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyEndpointUri)) });
// What's the load mode?
loadModeRaw = ConfigurationLoader.GetConfigurationString(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyLoadMode)));
loadMode = SparqlConnectorLoadMethod.Construct;
if (loadModeRaw != null)
{
try
{
loadMode = (SparqlConnectorLoadMethod)Enum.Parse(typeof(SparqlConnectorLoadMethod), loadModeRaw);
}
catch
{
throw new DotNetRdfConfigurationException("Unable to load the ReadWriteSparqlConnector identified by the Node '" + objNode.ToString() + "' as the value given for the property dnr:loadMode is not valid");
}
}
if (server == null)
{
INode endpointObj = ConfigurationLoader.GetConfigurationNode(g, objNode, new INode[] { g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyQueryEndpoint)), g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyEndpoint)) });
if (endpointObj == null)
{
return(false);
}
temp = ConfigurationLoader.LoadObject(g, endpointObj);
if (temp is SparqlRemoteEndpoint)
{
queryEndpoint = (SparqlRemoteEndpoint)temp;
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the ReadWriteSparqlConnector identified by the Node '" + objNode.ToString() + "' as the value given for the property dnr:queryEndpoint/dnr:endpoint points to an Object which cannot be loaded as an object which is of the type SparqlRemoteEndpoint");
}
}
else
{
// Are there any Named/Default Graph URIs
IEnumerable <Uri> defGraphs = from def in ConfigurationLoader.GetConfigurationData(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyDefaultGraphUri)))
where def.NodeType == NodeType.Uri
select((IUriNode)def).Uri;
IEnumerable <Uri> namedGraphs = from named in ConfigurationLoader.GetConfigurationData(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyNamedGraphUri)))
where named.NodeType == NodeType.Uri
select((IUriNode)named).Uri;
if (defGraphs.Any() || namedGraphs.Any())
{
queryEndpoint = new SparqlRemoteEndpoint(UriFactory.Create(server), defGraphs, namedGraphs);
;
}
else
{
queryEndpoint = new SparqlRemoteEndpoint(UriFactory.Create(server));
}
}
// Find the Update Endpoint or Endpoint URI
server = ConfigurationLoader.GetConfigurationString(g, objNode, new INode[] { g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyUpdateEndpointUri)), g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyEndpointUri)) });
if (server == null)
{
INode endpointObj = ConfigurationLoader.GetConfigurationNode(g, objNode, new INode[] { g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyUpdateEndpoint)), g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyEndpoint)) });
if (endpointObj == null)
{
return(false);
}
temp = ConfigurationLoader.LoadObject(g, endpointObj);
if (temp is SparqlRemoteUpdateEndpoint)
{
updateEndpoint = (SparqlRemoteUpdateEndpoint)temp;
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the ReadWriteSparqlConnector identified by the Node '" + objNode.ToString() + "' as the value given for the property dnr:updateEndpoint/dnr:endpoint points to an Object which cannot be loaded as an object which is of the type SparqlRemoteUpdateEndpoint");
}
}
else
{
updateEndpoint = new SparqlRemoteUpdateEndpoint(UriFactory.Create(server));
}
storageProvider = new ReadWriteSparqlConnector(queryEndpoint, updateEndpoint, loadMode);
break;
case SparqlHttpProtocol:
// Get the Service URI
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
storageProvider = new SparqlHttpProtocolConnector(UriFactory.Create(server));
break;
case Stardog:
case StardogV1:
case StardogV2:
case StardogV3:
// Get the Server and Store
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
store = ConfigurationLoader.GetConfigurationString(g, objNode, propStore);
if (store == null)
{
return(false);
}
// Get User Credentials
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
// Get Reasoning Mode
StardogReasoningMode reasoning = StardogReasoningMode.None;
String mode = ConfigurationLoader.GetConfigurationString(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyLoadMode)));
if (mode != null)
{
try
{
reasoning = (StardogReasoningMode)Enum.Parse(typeof(StardogReasoningMode), mode, true);
}
catch
{
reasoning = StardogReasoningMode.None;
}
}
if (user != null && pwd != null)
{
switch (targetType.FullName)
{
case StardogV1:
storageProvider = new StardogV1Connector(server, store, reasoning, user, pwd);
break;
case StardogV2:
storageProvider = new StardogV2Connector(server, store, reasoning, user, pwd);
break;
case StardogV3:
storageProvider = new StardogV3Connector(server, store, user, pwd);
break;
case Stardog:
default:
storageProvider = new StardogConnector(server, store, user, pwd);
break;
}
}
else
{
switch (targetType.FullName)
{
case StardogV1:
storageProvider = new StardogV1Connector(server, store, reasoning);
break;
case StardogV2:
storageProvider = new StardogV2Connector(server, store, reasoning);
break;
case StardogV3:
storageProvider = new StardogV3Connector(server, store);
break;
case Stardog:
default:
storageProvider = new StardogConnector(server, store);
break;
}
}
break;
case StardogServer:
case StardogServerV1:
case StardogServerV2:
case StardogServerV3:
// Get the Server and User Credentials
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
if (user != null && pwd != null)
{
switch (targetType.FullName)
{
case StardogServerV1:
storageServer = new StardogV1Server(server, user, pwd);
break;
case StardogServerV2:
storageServer = new StardogV2Server(server, user, pwd);
break;
case StardogServerV3:
storageServer = new StardogV3Server(server, user, pwd);
break;
case StardogServer:
default:
storageServer = new StardogServer(server, user, pwd);
break;
}
}
else
{
switch (targetType.FullName)
{
case StardogServerV1:
storageServer = new StardogV1Server(server);
break;
case StardogServerV2:
storageServer = new StardogV2Server(server);
break;
case StardogServerV3:
storageServer = new StardogV3Server(server);
break;
case StardogServer:
default:
storageServer = new StardogServer(server);
break;
}
}
break;
}
// Set the return object if one has been loaded
if (storageProvider != null)
{
obj = storageProvider;
}
else if (storageServer != null)
{
obj = storageServer;
}
// Check whether this is a standard HTTP manager and if so load standard configuration
if (obj is BaseHttpConnector)
{
BaseHttpConnector connector = (BaseHttpConnector)obj;
int timeout = ConfigurationLoader.GetConfigurationInt32(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyTimeout)), 0);
if (timeout > 0)
{
connector.Timeout = timeout;
}
INode proxyNode = ConfigurationLoader.GetConfigurationNode(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyProxy)));
if (proxyNode != null)
{
temp = ConfigurationLoader.LoadObject(g, proxyNode);
if (temp is IWebProxy)
{
connector.Proxy = (IWebProxy)temp;
}
else
{
throw new DotNetRdfConfigurationException("Unable to load storage provider/server identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:proxy property pointed to an Object which could not be loaded as an object of the required type WebProxy");
}
}
}
return(obj != null);
}
/// <summary>
/// Populates the settings from an existing serialized configuration
/// </summary>
/// <param name="g">Graph</param>
/// <param name="objNode">Object Node</param>
public virtual void PopulateFrom(IGraph g, INode objNode)
{
foreach (PropertyInfo property in this._properties.Keys)
{
ConnectionAttribute attr = this._properties[property];
if (!String.IsNullOrEmpty(attr.PopulateFrom))
{
INode n = objNode;
if (!String.IsNullOrEmpty(attr.PopulateVia))
{
n = ConfigurationLoader.GetConfigurationNode(g, n, g.CreateUriNode(UriFactory.Create(attr.PopulateVia)));
if (n == null)
{
continue;
}
}
switch (attr.Type)
{
case ConnectionSettingType.Boolean:
bool b = ConfigurationLoader.GetConfigurationBoolean(g, n, g.CreateUriNode(UriFactory.Create(attr.PopulateFrom)), (bool)property.GetValue(this, null));
property.SetValue(this, b, null);
break;
case ConnectionSettingType.File:
case ConnectionSettingType.Password:
case ConnectionSettingType.String:
String s = ConfigurationLoader.GetConfigurationString(g, n, g.CreateUriNode(UriFactory.Create(attr.PopulateFrom)));
if (!String.IsNullOrEmpty(s))
{
property.SetValue(this, s, null);
}
else
{
//May be a URI as the object
IUriNode u = ConfigurationLoader.GetConfigurationNode(g, n, g.CreateUriNode(UriFactory.Create(attr.PopulateFrom))) as IUriNode;
if (u != null)
{
property.SetValue(this, u.Uri.AbsoluteUri, null);
}
}
break;
case ConnectionSettingType.Integer:
int i = ConfigurationLoader.GetConfigurationInt32(g, n, g.CreateUriNode(UriFactory.Create(attr.PopulateFrom)), (int)property.GetValue(this, null));
property.SetValue(this, i, null);
break;
case ConnectionSettingType.Enum:
String enumStr = ConfigurationLoader.GetConfigurationString(g, n, g.CreateUriNode(UriFactory.Create(attr.PopulateFrom)));
if (!String.IsNullOrEmpty(enumStr))
{
try
{
Object val = Enum.Parse(property.GetValue(this, null).GetType(), enumStr, false);
property.SetValue(this, val, null);
}
catch
{
//Ignore errors
}
}
break;
}
}
}
}
/// <summary>
/// Tries to load a User Group based on information from the Configuration Graph.
/// </summary>
/// <param name="g">Configuration Graph.</param>
/// <param name="objNode">Object Node.</param>
/// <param name="targetType">Target Type.</param>
/// <param name="obj">Output Object.</param>
/// <returns></returns>
public bool TryLoadObject(IGraph g, INode objNode, Type targetType, out object obj)
{
obj = null;
UserGroup result = null;
switch (targetType.FullName)
{
case UserGroup:
result = new UserGroup();
// Get the members of the Group
IEnumerable <INode> members = ConfigurationLoader.GetConfigurationData(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyMember)));
foreach (INode member in members)
{
String username, password;
ConfigurationLoader.GetUsernameAndPassword(g, member, true, out username, out password);
if (username != null && password != null)
{
result.AddUser(new NetworkCredential(username, password));
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the User identified by the Node '" + member.ToString() + "' as there does not appear to be a valid username and password specified for this User either via the dnr:user and dnr:password properties or via a dnr:credentials property");
}
}
// Get the allow list for the Group
IEnumerable <INode> allowed = ConfigurationLoader.GetConfigurationData(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyAllow)));
foreach (INode allow in allowed)
{
Object temp = ConfigurationLoader.LoadObject(g, allow);
if (temp is IPermission)
{
result.AddAllowedAction((IPermission)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Permission identified by the Node '" + allow.ToString() + "' as the Object specified could not be loaded as an object which implements the IPermission interface");
}
}
// Get the deny list for the Group
IEnumerable <INode> denied = ConfigurationLoader.GetConfigurationData(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyDeny)));
foreach (INode deny in denied)
{
Object temp = ConfigurationLoader.LoadObject(g, deny);
if (temp is IPermission)
{
result.AddDeniedAction((IPermission)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Permission identified by the Node '" + deny.ToString() + "' as the Object specified could not be loaded as an object which implements the IPermission interface");
}
}
// Does the User Group require authentication?
result.AllowGuests = !ConfigurationLoader.GetConfigurationBoolean(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyRequiresAuthentication)), true);
// Is there a permission model specified?
String mode = ConfigurationLoader.GetConfigurationString(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyPermissionModel)));
if (mode != null)
{
result.PermissionModel = (PermissionModel)Enum.Parse(typeof(PermissionModel), mode);
}
break;
}
obj = result;
return(result != null);
}
/// <summary>
/// Tries to load a SPARQL Query Processor based on information from the Configuration Graph
/// </summary>
/// <param name="g">Configuration Graph</param>
/// <param name="objNode">Object Node</param>
/// <param name="targetType">Target Type</param>
/// <param name="obj">Output Object</param>
/// <returns></returns>
public bool TryLoadObject(IGraph g, INode objNode, Type targetType, out object obj)
{
obj = null;
ISparqlQueryProcessor processor = null;
INode storeObj;
Object temp;
INode propStorageProvider = g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyStorageProvider));
switch (targetType.FullName)
{
case LeviathanQueryProcessor:
INode datasetObj = ConfigurationLoader.GetConfigurationNode(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyUsingDataset)));
if (datasetObj != null)
{
temp = ConfigurationLoader.LoadObject(g, datasetObj);
if (temp is ISparqlDataset)
{
processor = new LeviathanQueryProcessor((ISparqlDataset)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Leviathan Query Processor identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:usingDataset property points to an Object that cannot be loaded as an object which implements the ISparqlDataset interface");
}
}
else
{
// If no dnr:usingDataset try dnr:usingStore instead
storeObj = ConfigurationLoader.GetConfigurationNode(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyUsingStore)));
if (storeObj == null)
{
return(false);
}
temp = ConfigurationLoader.LoadObject(g, storeObj);
if (temp is IInMemoryQueryableStore)
{
processor = new LeviathanQueryProcessor((IInMemoryQueryableStore)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Leviathan Query Processor identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:usingStore property points to an Object that cannot be loaded as an object which implements the IInMemoryQueryableStore interface");
}
}
break;
case SimpleQueryProcessor:
storeObj = ConfigurationLoader.GetConfigurationNode(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyUsingStore)));
if (storeObj == null)
{
return(false);
}
temp = ConfigurationLoader.LoadObject(g, storeObj);
if (temp is INativelyQueryableStore)
{
processor = new SimpleQueryProcessor((INativelyQueryableStore)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Simple Query Processor identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:usingStore property points to an Object that cannot be loaded as an object which implements the INativelyQueryableStore interface");
}
break;
case GenericQueryProcessor:
INode managerObj = ConfigurationLoader.GetConfigurationNode(g, objNode, propStorageProvider);
if (managerObj == null)
{
return(false);
}
temp = ConfigurationLoader.LoadObject(g, managerObj);
if (temp is IQueryableStorage)
{
processor = new GenericQueryProcessor((IQueryableStorage)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Generic Query Processor identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:genericManager property points to an Object that cannot be loaded as an object which implements the IQueryableStorage interface");
}
break;
case RemoteQueryProcessor:
INode endpointObj = ConfigurationLoader.GetConfigurationNode(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyEndpoint)));
if (endpointObj == null)
{
return(false);
}
temp = ConfigurationLoader.LoadObject(g, endpointObj);
if (temp is SparqlRemoteEndpoint)
{
processor = new RemoteQueryProcessor((SparqlRemoteEndpoint)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Remote Query Processor identified by the Node '" + objNode.ToSafeString() + "' as the value given for the dnr:endpoint property points to an Object that cannot be loaded as an object which is a SparqlRemoteEndpoint");
}
break;
case PelletQueryProcessor:
String server = ConfigurationLoader.GetConfigurationValue(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyServer)));
if (server == null)
{
return(false);
}
String kb = ConfigurationLoader.GetConfigurationString(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyStore)));
if (kb == null)
{
return(false);
}
processor = new PelletQueryProcessor(UriFactory.Create(server), kb);
break;
}
obj = processor;
return(processor != null);
}
/// <summary>
/// Tries to load a Reasoner based on information from the Configuration Graph.
/// </summary>
/// <param name="g">Configuration Graph.</param>
/// <param name="objNode">Object Node.</param>
/// <param name="targetType">Target Type.</param>
/// <param name="obj">Output Object.</param>
/// <returns></returns>
public bool TryLoadObject(IGraph g, INode objNode, Type targetType, out object obj)
{
obj = null;
Object output;
switch (targetType.FullName)
{
case PelletReasonerType:
String server = ConfigurationLoader.GetConfigurationValue(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyServer)));
if (server == null) return false;
String kb = ConfigurationLoader.GetConfigurationString(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyStore)));
if (kb == null) return false;
output = new PelletReasoner(UriFactory.Create(server), kb);
break;
case OwlReasonerWrapperType:
INode reasonerNode = ConfigurationLoader.GetConfigurationNode(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyOwlReasoner)));
if (reasonerNode == null) return false;
Object reasoner = ConfigurationLoader.LoadObject(g, reasonerNode);
if (reasoner is IOwlReasoner)
{
output = new OwlReasonerWrapper((IOwlReasoner)reasoner);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load configuration for the OWL Reasoner Wrapper identified by the Node '" + objNode.ToString() + "' as the value for the dnr:owlReasoner property points to an Object which cannot be loaded as an object which implements the IOwlReasoner interface");
}
break;
default:
// Otherwise we'll just attempt to load this as an instance of an IInferenceEngine
try
{
output = (IInferenceEngine)Activator.CreateInstance(targetType);
}
catch
{
// Any error means this loader can't load this type
return false;
}
break;
}
if (output != null)
{
if (output is IInferenceEngine)
{
// Now initialise with any specified Graphs
IEnumerable<INode> rulesGraphs = ConfigurationLoader.GetConfigurationData(g, objNode, g.CreateUriNode(UriFactory.Create(ConfigurationLoader.PropertyUsingGraph)));
foreach (INode rulesGraph in rulesGraphs)
{
Object temp = ConfigurationLoader.LoadObject(g, rulesGraph);
if (temp is IGraph)
{
((IInferenceEngine)output).Initialise((IGraph)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load Configuration for the Forward Chaining Reasoner identified by the Node '" + objNode.ToString() + "' as one of the values for the dnr:usingGraph property points to an Object which cannot be loaded as an object which implements the IGraph interface");
}
}
}
}
obj = output;
return true;
}
/// <summary>
/// Tries to load a Generic IO Manager based on information from the Configuration Graph
/// </summary>
/// <param name="g">Configuration Graph</param>
/// <param name="objNode">Object Node</param>
/// <param name="targetType">Target Type</param>
/// <param name="obj">Output Object</param>
/// <returns></returns>
public bool TryLoadObject(IGraph g, INode objNode, Type targetType, out object obj)
{
IGenericIOManager manager = null;
obj = null;
String server, user, pwd, store;
bool isAsync;
Object temp;
INode storeObj;
//Create the URI Nodes we're going to use to search for things
INode propServer = ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyServer),
propDb = ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyDatabase),
propStore = ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyStore),
propAsync = ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyAsync);
switch (targetType.FullName)
{
#if !NO_SYNC_HTTP
case AllegroGraph:
//Get the Server, Catalog and Store
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
String catalog = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyCatalog));
store = ConfigurationLoader.GetConfigurationString(g, objNode, propStore);
if (store == null)
{
return(false);
}
//Get User Credentials
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
if (user != null && pwd != null)
{
manager = new AllegroGraphConnector(server, catalog, store, user, pwd);
}
else
{
manager = new AllegroGraphConnector(server, catalog, store);
}
break;
#endif
case DatasetFile:
//Get the Filename and whether the loading should be done asynchronously
String file = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyFromFile));
if (file == null)
{
return(false);
}
file = ConfigurationLoader.ResolvePath(file);
isAsync = ConfigurationLoader.GetConfigurationBoolean(g, objNode, propAsync, false);
manager = new DatasetFileManager(file, isAsync);
break;
#if !NO_SYNC_HTTP
case Dydra:
//Get the Account Name and Store
String account = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyCatalog));
if (account == null)
{
return(false);
}
store = ConfigurationLoader.GetConfigurationString(g, objNode, propStore);
if (store == null)
{
return(false);
}
//Get User Credentials
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
if (user != null)
{
manager = new DydraConnector(account, store, user);
}
else
{
manager = new DydraConnector(account, store);
}
break;
case FourStore:
//Get the Server and whether Updates are enabled
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
bool enableUpdates = ConfigurationLoader.GetConfigurationBoolean(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyEnableUpdates), true);
manager = new FourStoreConnector(server, enableUpdates);
break;
case Fuseki:
//Get the Server URI
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
manager = new FusekiConnector(server);
break;
#endif
case InMemory:
//Get the Dataset/Store
INode datasetObj = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyUsingDataset));
if (datasetObj != null)
{
temp = ConfigurationLoader.LoadObject(g, datasetObj);
if (temp is ISparqlDataset)
{
manager = new InMemoryManager((ISparqlDataset)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the In-Memory Manager identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:usingDataset property points to an Object that cannot be loaded as an object which implements the ISparqlDataset interface");
}
}
else
{
//If no dnr:usingDataset try dnr:usingStore instead
storeObj = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyUsingStore));
if (storeObj != null)
{
temp = ConfigurationLoader.LoadObject(g, storeObj);
if (temp is IInMemoryQueryableStore)
{
manager = new InMemoryManager((IInMemoryQueryableStore)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the In-Memory Manager identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:usingStore property points to an Object that cannot be loaded as an object which implements the IInMemoryQueryableStore interface");
}
}
else
{
//If no dnr:usingStore either then create a new empty store
manager = new InMemoryManager();
}
}
break;
#if !NO_SYNC_HTTP
case Joseki:
//Get the Query and Update URIs
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
String queryService = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyQueryPath));
if (queryService == null)
{
return(false);
}
String updateService = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyUpdatePath));
if (updateService == null)
{
manager = new JosekiConnector(server, queryService);
}
else
{
manager = new JosekiConnector(server, queryService, updateService);
}
break;
#endif
case ReadOnly:
//Get the actual Manager we are wrapping
storeObj = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyGenericManager));
temp = ConfigurationLoader.LoadObject(g, storeObj);
if (temp is IGenericIOManager)
{
manager = new ReadOnlyConnector((IGenericIOManager)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Read-Only Connector identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:genericManager property points to an Object which cannot be loaded as an object which implements the required IGenericIOManager interface");
}
break;
case ReadOnlyQueryable:
//Get the actual Manager we are wrapping
storeObj = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyGenericManager));
temp = ConfigurationLoader.LoadObject(g, storeObj);
if (temp is IQueryableGenericIOManager)
{
manager = new QueryableReadOnlyConnector((IQueryableGenericIOManager)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the Queryable Read-Only Connector identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:genericManager property points to an Object which cannot be loaded as an object which implements the required IQueryableGenericIOManager interface");
}
break;
#if !NO_SYNC_HTTP
case Sesame:
case SesameV5:
case SesameV6:
//Get the Server and Store ID
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
store = ConfigurationLoader.GetConfigurationString(g, objNode, propStore);
if (store == null)
{
return(false);
}
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
if (user != null && pwd != null)
{
manager = (IGenericIOManager)Activator.CreateInstance(targetType, new Object[] { server, store, user, pwd });
}
else
{
manager = (IGenericIOManager)Activator.CreateInstance(targetType, new Object[] { server, store });
}
break;
case Sparql:
//Get the Endpoint URI or the Endpoint
server = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyEndpointUri));
//What's the load mode?
String loadModeRaw = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyLoadMode));
SparqlConnectorLoadMethod loadMode = SparqlConnectorLoadMethod.Construct;
if (loadModeRaw != null)
{
try
{
#if SILVERLIGHT
loadMode = (SparqlConnectorLoadMethod)Enum.Parse(typeof(SparqlConnectorLoadMethod), loadModeRaw, false);
#else
loadMode = (SparqlConnectorLoadMethod)Enum.Parse(typeof(SparqlConnectorLoadMethod), loadModeRaw);
#endif
}
catch
{
throw new DotNetRdfConfigurationException("Unable to load the SparqlConnector identified by the Node '" + objNode.ToString() + "' as the value given for the property dnr:loadMode is not valid");
}
}
if (server == null)
{
INode endpointObj = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyEndpoint));
if (endpointObj == null)
{
return(false);
}
temp = ConfigurationLoader.LoadObject(g, endpointObj);
if (temp is SparqlRemoteEndpoint)
{
manager = new SparqlConnector((SparqlRemoteEndpoint)temp, loadMode);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the SparqlConnector identified by the Node '" + objNode.ToString() + "' as the value given for the property dnr:endpoint points to an Object which cannot be loaded as an object which is of the type SparqlRemoteEndpoint");
}
}
else
{
//Are there any Named/Default Graph URIs
IEnumerable <Uri> defGraphs = from def in ConfigurationLoader.GetConfigurationData(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyDefaultGraphUri))
where def.NodeType == NodeType.Uri
select((IUriNode)def).Uri;
IEnumerable <Uri> namedGraphs = from named in ConfigurationLoader.GetConfigurationData(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyNamedGraphUri))
where named.NodeType == NodeType.Uri
select((IUriNode)named).Uri;
if (defGraphs.Any() || namedGraphs.Any())
{
manager = new SparqlConnector(new SparqlRemoteEndpoint(UriFactory.Create(server), defGraphs, namedGraphs), loadMode);
}
else
{
manager = new SparqlConnector(UriFactory.Create(server), loadMode);
}
}
break;
case SparqlHttpProtocol:
//Get the Service URI
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
manager = new SparqlHttpProtocolConnector(UriFactory.Create(server));
break;
case Stardog:
//Get the Server and Store
server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
return(false);
}
store = ConfigurationLoader.GetConfigurationString(g, objNode, propStore);
if (store == null)
{
return(false);
}
//Get User Credentials
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
//Get Reasoning Mode
StardogReasoningMode reasoning = StardogReasoningMode.None;
String mode = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyLoadMode));
if (mode != null)
{
try
{
reasoning = (StardogReasoningMode)Enum.Parse(typeof(StardogReasoningMode), mode);
}
catch
{
reasoning = StardogReasoningMode.None;
}
}
if (user != null && pwd != null)
{
manager = new StardogConnector(server, store, reasoning, user, pwd);
}
else
{
manager = new StardogConnector(server, store, reasoning);
}
break;
case Talis:
//Get the Store Name and User credentials
store = ConfigurationLoader.GetConfigurationString(g, objNode, propStore);
if (store == null)
{
return(false);
}
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
if (user != null && pwd != null)
{
manager = new TalisPlatformConnector(store, user, pwd);
}
else
{
manager = new TalisPlatformConnector(store);
}
break;
#endif
}
#if !NO_PROXY
//Check whether this is a proxyable manager and if we need to load proxy settings
if (manager is BaseHttpConnector)
{
INode proxyNode = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyProxy));
if (proxyNode != null)
{
temp = ConfigurationLoader.LoadObject(g, proxyNode);
if (temp is WebProxy)
{
((BaseHttpConnector)manager).Proxy = (WebProxy)temp;
}
else
{
throw new DotNetRdfConfigurationException("Unable to load Generic Manager identified by the Node '" + objNode.ToString() + "' as the value given for the dnr:proxy property pointed to an Object which could not be loaded as an object of the required type WebProxy");
}
}
}
#endif
obj = manager;
return(manager != null);
}
/// <summary>
/// Attempts to load an Object of the given type identified by the given Node and returned as the Type that this loader generates
/// </summary>
/// <param name="g">Configuration Graph</param>
/// <param name="objNode">Object Node</param>
/// <param name="targetType">Target Type</param>
/// <param name="obj">Created Object</param>
/// <returns>True if the loader succeeded in creating an Object</returns>
public bool TryLoadObject(IGraph g, INode objNode, Type targetType, out object obj)
{
obj = null;
INode managerNode;
Object temp;
//Create the URI Nodes we're going to use to search for things
INode propServer = ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyServer),
propDb = ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyDatabase);
switch (targetType.FullName)
{
case MicrosoftAdoDataset:
managerNode = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyGenericManager));
if (managerNode != null)
{
temp = ConfigurationLoader.LoadObject(g, managerNode);
if (temp is MicrosoftAdoManager)
{
obj = new MicrosoftAdoDataset((MicrosoftAdoManager)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the object identified by the Node '" + objNode.ToString() + "' since the object pointed to by the dnr:genericManager property could not be loaded as an instance of the required MicrosoftAdoManager class");
}
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the object identified by the Node '" + objNode.ToString() + "' as it specified a dnr:type of MicrosoftAdoDataset but failed to specify a dnr:genericManager property to point to a MicrosoftAdoManager");
}
break;
case AzureAdoManager:
case MicrosoftAdoManager:
//Get Server and Database details
String server = ConfigurationLoader.GetConfigurationString(g, objNode, propServer);
if (server == null)
{
server = "localhost";
}
String db = ConfigurationLoader.GetConfigurationString(g, objNode, propDb);
if (db == null)
{
return(false);
}
//Get user credentials
String user, pwd;
ConfigurationLoader.GetUsernameAndPassword(g, objNode, true, out user, out pwd);
bool encrypt = ConfigurationLoader.GetConfigurationBoolean(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyEncryptConnection), false);
String mode = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyLoadMode));
AdoAccessMode accessMode = (mode != null ? (AdoAccessMode)Enum.Parse(typeof(AdoAccessMode), mode) : AdoAccessMode.Streaming);
//Create the Manager
if (user != null && pwd != null)
{
if (targetType.FullName.Equals(MicrosoftAdoManager))
{
obj = new MicrosoftAdoManager(server, db, user, pwd, encrypt, accessMode);
}
else
{
obj = new AzureAdoManager(server, db, user, pwd, accessMode);
}
}
else
{
if (targetType.FullName.Equals(AzureAdoManager))
{
throw new DotNetRdfConfigurationException("Unable to load the object identified by the Node '" + objNode.ToString() + "' as an AzureAdoManager as the required dnr:user and dnr:password properties were missing");
}
obj = new MicrosoftAdoManager(server, db, encrypt, accessMode);
}
break;
case MicrosoftAdoOptimiser:
managerNode = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyGenericManager));
if (managerNode != null)
{
temp = ConfigurationLoader.LoadObject(g, managerNode);
if (temp is MicrosoftAdoManager)
{
obj = new MicrosoftAdoOptimiser((MicrosoftAdoManager)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the object identified by the Node '" + objNode.ToString() + "' since the object pointed to by the dnr:genericManager property could not be loaded as a MicrosoftAdoManager instance");
}
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the object identified by the Node '" + objNode.ToString() + "' as it specified a dnr:type of AdoOptimiser but failed to specify a dnr:genericManager property to point to a MicrosoftAdoManager instance");
}
break;
}
return(obj != null);
}
public bool TryLoadObject(IGraph g, INode objNode, Type targetType, out object obj)
{
switch (targetType.FullName)
{
case MongoDBManager:
String server = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyServer));
String storeID = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyDatabase));
String collectionID = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyCatalog));
String loadMode = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyLoadMode));
MongoDBSchemas schema = MongoDBDocumentManager.DefaultSchema;
if (loadMode != null)
{
switch (loadMode)
{
case "GraphCentric":
schema = MongoDBSchemas.GraphCentric;
break;
case "TripleCentric":
schema = MongoDBSchemas.TripleCentric;
break;
}
}
if (storeID != null)
{
AlexandriaMongoDBManager manager;
if (server == null)
{
if (collectionID == null)
{
manager = new AlexandriaMongoDBManager(storeID, schema);
}
else
{
manager = new AlexandriaMongoDBManager(new MongoDBDocumentManager(new MongoConfiguration(), storeID, collectionID, schema));
}
}
else
{
//Have a Custom Connection String
if (collectionID == null)
{
manager = new AlexandriaMongoDBManager(new MongoDBDocumentManager(server, storeID, schema));
}
else
{
manager = new AlexandriaMongoDBManager(new MongoDBDocumentManager(server, storeID, collectionID, schema));
}
}
obj = manager;
return(true);
}
//If we get here then the required dnr:database property was missing
throw new DotNetRdfConfigurationException("Unable to load the MongoDB Manager identified by the Node '" + objNode.ToString() + "' since there was no value given for the required property dnr:database");
break;
case MongoDBDataset:
INode managerNode = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, "dnr:genericManager"));
if (managerNode == null)
{
throw new DotNetRdfConfigurationException("Unable to load the MongoDB Dataset identified by the Node '" + objNode.ToString() + "' since there we no value for the required property dnr:genericManager");
}
Object temp = ConfigurationLoader.LoadObject(g, managerNode);
if (temp is AlexandriaMongoDBManager)
{
obj = new AlexandriaMongoDBDataset((AlexandriaMongoDBManager)temp);
return(true);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load the MongoDB Dataset identified by the Node '" + objNode.ToString() + "' since the value for the dnr:genericManager property pointed to an Object which could not be loaded as an object of type AlexandriaMongoDBManager");
}
break;
}
obj = null;
return(false);
}
/// <summary>
/// Creates a new Base Handler Configuration which loads common Handler settings from a Configuration Graph
/// </summary>
/// <param name="g">Configuration Graph</param>
/// <param name="objNode">Object Node</param>
public BaseHandlerConfiguration(IGraph g, INode objNode)
{
//Are there any User Groups associated with this Handler?
IEnumerable <INode> groups = ConfigurationLoader.GetConfigurationData(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, "dnr:userGroup"));
foreach (INode group in groups)
{
Object temp = ConfigurationLoader.LoadObject(g, group);
if (temp is UserGroup)
{
this._userGroups.Add((UserGroup)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load Handler Configuration as the RDF Configuration file specifies a value for the Handlers dnr:userGroup property which cannot be loaded as an object which is a UserGroup");
}
}
//General Handler Settings
this._showErrors = ConfigurationLoader.GetConfigurationBoolean(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyShowErrors), this._showErrors);
String introFile = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyIntroFile));
if (introFile != null)
{
introFile = ConfigurationLoader.ResolvePath(introFile);
if (File.Exists(introFile))
{
using (StreamReader reader = new StreamReader(introFile))
{
this._introText = reader.ReadToEnd();
reader.Close();
}
}
}
this._stylesheet = ConfigurationLoader.GetConfigurationString(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyStylesheet)).ToSafeString();
this._corsEnabled = ConfigurationLoader.GetConfigurationBoolean(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyEnableCors), true);
//Cache Settings
this._cacheDuration = ConfigurationLoader.GetConfigurationInt32(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyCacheDuration), this._cacheDuration);
if (this._cacheDuration < MinimumCacheDuration)
{
this._cacheDuration = MinimumCacheDuration;
}
if (this._cacheDuration > MaximumCacheDuration)
{
this._cacheDuration = MaximumCacheDuration;
}
this._cacheSliding = ConfigurationLoader.GetConfigurationBoolean(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyCacheSliding), this._cacheSliding);
//SPARQL Expression Factories
IEnumerable <INode> factories = ConfigurationLoader.GetConfigurationData(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyExpressionFactory));
foreach (INode factory in factories)
{
Object temp = ConfigurationLoader.LoadObject(g, factory);
if (temp is ISparqlCustomExpressionFactory)
{
this._expressionFactories.Add((ISparqlCustomExpressionFactory)temp);
}
else
{
throw new DotNetRdfConfigurationException("Unable to load Handler Configuration as the RDF Configuration file specifies a value for the Handlers dnr:expressionFactory property which cannot be loaded as an object which is a SPARQL Expression Factory");
}
}
//Writer Properties
this._writerCompressionLevel = ConfigurationLoader.GetConfigurationInt32(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyCompressionLevel), this._writerCompressionLevel);
this._writerDtds = ConfigurationLoader.GetConfigurationBoolean(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyDtdWriting), this._writerDtds);
this._writerHighSpeed = ConfigurationLoader.GetConfigurationBoolean(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyHighSpeedWriting), this._writerHighSpeed);
this._writerMultiThreading = ConfigurationLoader.GetConfigurationBoolean(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyMultiThreadedWriting), this._writerMultiThreading);
this._writerPrettyPrinting = ConfigurationLoader.GetConfigurationBoolean(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyPrettyPrinting), this._writerPrettyPrinting);
this._writerAttributes = ConfigurationLoader.GetConfigurationBoolean(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyAttributeWriting), this._writerAttributes);
//Load in the Default Namespaces if specified
INode nsNode = ConfigurationLoader.GetConfigurationNode(g, objNode, ConfigurationLoader.CreateConfigurationNode(g, ConfigurationLoader.PropertyImportNamespacesFrom));
if (nsNode != null)
{
Object nsTemp = ConfigurationLoader.LoadObject(g, nsNode);
if (nsTemp is IGraph)
{
this._defaultNamespaces.Import(((IGraph)nsTemp).NamespaceMap);
}
}
}