/// <summary>
/// Gets the Configuration Graph with the given Filename returns it
/// </summary>
/// <param name="context">HTTP Context</param>
/// <param name="configFile">Configuration File</param>
/// <returns></returns>
public static IGraph LoadConfigurationGraph(HttpContext context, String configFile)
{
//Whenever the Configuration Graph is loaded set the Path Resolver to be the WebConfigurationPathResolver
ConfigurationLoader.PathResolver = new WebConfigurationPathResolver(context.Server);
//Use a caching mechanism for Config Graphs
if (context.Cache[WebConfigGraphCacheKey + Path.GetFileName(configFile)] == null)
{
Graph g = new Graph();
FileLoader.Load(g, configFile);
context.Cache.Add(WebConfigGraphCacheKey + Path.GetFileName(configFile), g, new System.Web.Caching.CacheDependency(configFile), System.Web.Caching.Cache.NoAbsoluteExpiration, new TimeSpan(0, WebConfigGraphCacheDuration, 0), System.Web.Caching.CacheItemPriority.Normal, null);
//Make sure to auto-detect any Object Factories and custom Parsers/Writers from the Graph
ConfigurationLoader.AutoDetectObjectFactories(g);
ConfigurationLoader.AutoDetectReadersAndWriters(g);
return(g);
}
else
{
Object temp = context.Cache[WebConfigGraphCacheKey + Path.GetFileName(configFile)];
if (temp is IGraph)
{
//Q: Do we need to call the AutoDetectX() methods again here or not?
//ConfigurationLoader.AutoDetectObjectFactories((IGraph)temp);
return((IGraph)temp);
}
else
{
Graph g = new Graph();
FileLoader.Load(g, configFile);
context.Cache.Add(WebConfigGraphCacheKey + Path.GetFileName(configFile), g, new System.Web.Caching.CacheDependency(configFile), System.Web.Caching.Cache.NoAbsoluteExpiration, new TimeSpan(0, WebConfigGraphCacheDuration, 0), System.Web.Caching.CacheItemPriority.Normal, null);
//Make sure to auto-detect any Object Factories and custom Parsers/Writers from the Graph
ConfigurationLoader.AutoDetectObjectFactories(g);
ConfigurationLoader.AutoDetectReadersAndWriters(g);
return(g);
}
}
}
public override void Run(string[] args)
{
if (args.Length < 2)
{
this.ShowUsage();
return;
}
//Check Configuration File is OK
String config = args[1];
if (args[1].Equals("-help"))
{
this.ShowUsage();
return;
}
if (!File.Exists(config))
{
Console.Error.WriteLine("rdfSqlStorage: Error: Specified migration configuration file '" + config + "' does not exist!");
return;
}
//Check for other options
this.CheckOptions(args);
try
{
Graph g = new Graph();
g.LoadFromFile(config);
Console.WriteLine("rdfSqlStorage: Read migration configuration file OK...");
ConfigurationLoader.AutoDetectObjectFactories(g);
INode sourceNode = g.GetUriNode(new Uri("dotnetrdf:migration:source"));
if (sourceNode == null)
{
Console.Error.WriteLine("rdfSqlStorage: Error: Expected to find the source for the migration specified by the special URI <dotnetrdf:migration:source> but it does not exist in the given Configuration File!");
return;
}
INode targetNode = g.GetUriNode(new Uri("dotnetrdf:migration:target"));
if (targetNode == null)
{
Console.Error.WriteLine("rdfSqlStorage: Error: Expected to find the target for the migration specified by the special URI <dotnetrdf:migration:target> but it does not exist in the given Configuration File!");
return;
}
//Try to load the Objects
Object sourceObj = ConfigurationLoader.LoadObject(g, sourceNode);
if (!(sourceObj is ISqlIOManager))
{
Console.Error.WriteLine("rdfSqlStorage: Error: Expected the migration source to be loadable as an object of type ISqlIOManager!");
return;
}
Object targetObj = ConfigurationLoader.LoadObject(g, targetNode);
if (!(targetObj is IGenericIOManager))
{
Console.Error.WriteLine("rdfSqlStorage: Error: Expected the migration target to be loadable as an object of type IGenericIOManager!");
return;
}
Console.WriteLine("rdfSqlStorage: Loaded migration source and target OK...");
//Retrieve Graph list from Migration Source
ISqlIOManager source = (ISqlIOManager)sourceObj;
Console.WriteLine("rdfSqlStorage: Retrieving Graph URIs from migration source...");
try
{
source.Open(true);
List <Uri> uris = source.GetGraphUris();
Console.WriteLine("rdfSqlStorage: Migration source has " + uris.Count + " Graph URIs");
//Start migrating Graphs
IGenericIOManager target = (IGenericIOManager)targetObj;
for (int i = 0; i < uris.Count; i++)
{
Console.WriteLine("rdfSqlStorage: Migrating Graph '" + uris[i].ToSafeString() + "' (" + (i + 1) + " of " + uris.Count + ")...");
String id = source.GetGraphID(uris[i]);
using (Graph temp = new Graph())
{
temp.BaseUri = uris[i];
Console.WriteLine("rdfSqlStorage: Loading Graph into memory...");
source.LoadTriples(temp, id);
Console.WriteLine("rdfSqlStorage: Loaded " + temp.Triples.Count + " Triple(s)");
Console.WriteLine("rdfSqlStorage: Saving Graph to migration target...");
target.SaveGraph(temp);
Console.WriteLine("rdfSqlStorage: Saved Graph OK");
if (this._verify)
{
Console.WriteLine("rdfSqlStorage: Retrieving newly saved Graph from migration target to verify data migration...");
using (Graph temp2 = new Graph())
{
target.LoadGraph(temp2, uris[i]);
Console.WriteLine("rdfSqlStorage: Retrieved newly saved Graph OK, proceeding to verify data...");
GraphDiffReport report = temp.Difference(temp2);
if (!report.AreEqual)
{
Console.Error.WriteLine("rdfSqlStorage: Warning: Data Verification failed: " + report.AddedTriples.Count() + " incorrect Ground Triple(s) and " + report.AddedMSGs.Count() + " incorrect MSGs containing " + report.AddedMSGs.Sum(x => x.Triples.Count) + " non-Ground Triple(s)");
if (this._halt)
{
Console.Error.WriteLine("rdfSqlStorage: Error: Halting due to data verification failure!");
return;
}
}
else
{
Console.WriteLine("rdfSqlStorage: Data Verified OK!");
}
temp2.Dispose();
}
}
temp.Dispose();
}
GC.GetTotalMemory(true);
Console.WriteLine();
}
Console.WriteLine("rdfSqlStorage: Finishing Migrating Graphs!");
}
finally
{
source.Close(true);
}
}
catch (RdfParserSelectionException selEx)
{
Console.Error.WriteLine("rdfSqlStorage: Error: Specified migration configuration file is not in a RDF format that the tool understands!");
this.PrintErrorTrace(selEx);
}
catch (RdfParseException parseEx)
{
Console.Error.WriteLine("rdfSqlStorage: Error: Specified migration configuration file is not valid RDF!");
this.PrintErrorTrace(parseEx);
}
catch (DotNetRdfConfigurationException configEx)
{
Console.Error.WriteLine("rdfSqlStorage: Error: Specified migration configuration file contains malformed configuration information!");
this.PrintErrorTrace(configEx);
}
}
