public override void Initialize(XElement configRoot)
{
// name
var nameAttribute = configRoot.Attribute("name");
if (nameAttribute == null) throw new Exception("Missing 'name' attribute on element CollectionProvider");
Name = nameAttribute.Value;
var identityAttribute = configRoot.Attribute("identifier");
if (identityAttribute == null) throw new Exception("Missing 'identifier' attribute on element CollectionProvider");
Identity = identityAttribute.Value;
// description
var descriptionAttribute = configRoot.Attribute("description");
if (descriptionAttribute == null)
{
// log warning
Logging.LogWarning(0, "No description element for collection {0}", Name);
} else
{
Description = descriptionAttribute.Value;
}
// dsn
var dsnElement = configRoot.Elements("DsnConnection").FirstOrDefault();
if (dsnElement == null)
{
throw new Exception("Missing 'DsnConnection' element as child of CollectionProvider");
}
_dataSourceConnectionString = dsnElement.Value.Trim();
// publishing definitions
foreach (var xElement in configRoot.Descendants("Definition"))
{
// add each definition to the collection
var def = new ResourcePublishingDefinition
{
ResourcePrefix = new Uri(GetElementValue(xElement, "ResourcePrefix")),
UriTemplate = new UriTemplate(GetElementValue(xElement, "UriTemplate"))
};
if (DoesElementExist(xElement, "SuppressFragmentsFeed"))
{
def.SuppressFragmentsFeed = bool.Parse(GetElementValue(xElement, "SuppressFragmentsFeed"));
}
if (DoesElementExist(xElement, "FragmentsQuery"))
{
def.FragmentsQuery = GetElementValue(xElement, "FragmentsQuery");
if (DoesElementExist(xElement, "SourceDataInLocalTime"))
def.SourceDataInLocalTime = bool.Parse(GetElementValue(xElement, "SourceDataInLocalTime"));
} else
{
def.NoTimeStampInData = true;
def.HashValueTable = GetElementValue(xElement, "HashValueTable");
// Axel was here
if (DoesElementExist(xElement, "HashValueFileName"))
def.HashValueFileName = GetElementValue(xElement, "HashValueFileName");
def.EntityIdColumn = GetElementValue(xElement, "EntityIdColumn");
def.HashValueKeyColumns = GetElementValues(xElement, "HashValueKeyColumn");
def.ValueCheckInterval = GetElementValue(xElement, "UpdateFrequency");
}
if (DoesElementExist(xElement, "EncodeIdForResourceId"))
{
def.EncodeIdForResourceId = bool.Parse(GetElementValue(xElement, "EncodeIdForResourceId"));
}
// get FragmentGenerationDefinitions
foreach (var fragmentGenerationDefinition in xElement.Descendants("FragmentGenerationDefinition"))
{
var fragDef = new FragmentGenerationDefinition
{
SnapshotQuery = GetElementValue(fragmentGenerationDefinition, "SnapshotQuery"),
FragmentQuery = GetElementValue(fragmentGenerationDefinition, "FragmentQuery")
};
// get generic exclude columns
var rdfTemplatesElem = xElement.Descendants("RdfTemplates").FirstOrDefault();
if (rdfTemplatesElem.Attribute("genericExcludes") != null)
{
fragDef.GenericTemplateExcludeColumns = new List<string>(rdfTemplatesElem.Attribute("genericExcludes").Value.Split(','));
}
// get lines
var patternLines = new List<string>();
foreach (var lineElement in fragmentGenerationDefinition.Descendants("li"))
{
patternLines.Add(lineElement.Value.Replace("{{", "<").Replace("}}", ">"));
}
fragDef.RdfTemplateLines = patternLines;
def.FragmentGenerationDefinitions.Add(fragDef);
}
_publishingDefinitions.Add(def);
}
RawConfig = configRoot.ToString();
IsEnabled = true;
}
public override void Initialize(XElement configRoot)
{
// name
var nameAttribute = configRoot.Attribute("name");
if (nameAttribute == null)
{
throw new Exception("Missing 'name' attribute on element CollectionProvider");
}
Name = nameAttribute.Value;
var identityAttribute = configRoot.Attribute("identifier");
if (identityAttribute == null)
{
throw new Exception("Missing 'identifier' attribute on element CollectionProvider");
}
Identity = identityAttribute.Value;
// description
var descriptionAttribute = configRoot.Attribute("description");
if (descriptionAttribute == null)
{
// log warning
Logging.LogWarning(0, "No description element for collection {0}", Name);
}
else
{
Description = descriptionAttribute.Value;
}
// dsn
var dsnElement = configRoot.Elements("DsnConnection").FirstOrDefault();
if (dsnElement == null)
{
throw new Exception("Missing 'DsnConnection' element as child of CollectionProvider");
}
_dataSourceConnectionString = dsnElement.Value.Trim();
// publishing definitions
foreach (var xElement in configRoot.Descendants("Definition"))
{
// add each definition to the collection
var def = new ResourcePublishingDefinition
{
ResourcePrefix = new Uri(GetElementValue(xElement, "ResourcePrefix")),
UriTemplate = new UriTemplate(GetElementValue(xElement, "UriTemplate"))
};
if (DoesElementExist(xElement, "SuppressFragmentsFeed"))
{
def.SuppressFragmentsFeed = bool.Parse(GetElementValue(xElement, "SuppressFragmentsFeed"));
}
if (DoesElementExist(xElement, "FragmentsQuery"))
{
def.FragmentsQuery = GetElementValue(xElement, "FragmentsQuery");
if (DoesElementExist(xElement, "SourceDataInLocalTime"))
{
def.SourceDataInLocalTime = bool.Parse(GetElementValue(xElement, "SourceDataInLocalTime"));
}
}
else
{
def.NoTimeStampInData = true;
def.HashValueTable = GetElementValue(xElement, "HashValueTable");
// Axel was here
if (DoesElementExist(xElement, "HashValueFileName"))
{
def.HashValueFileName = GetElementValue(xElement, "HashValueFileName");
}
def.EntityIdColumn = GetElementValue(xElement, "EntityIdColumn");
def.HashValueKeyColumns = GetElementValues(xElement, "HashValueKeyColumn");
def.ValueCheckInterval = GetElementValue(xElement, "UpdateFrequency");
}
if (DoesElementExist(xElement, "EncodeIdForResourceId"))
{
def.EncodeIdForResourceId = bool.Parse(GetElementValue(xElement, "EncodeIdForResourceId"));
}
// get FragmentGenerationDefinitions
foreach (var fragmentGenerationDefinition in xElement.Descendants("FragmentGenerationDefinition"))
{
var fragDef = new FragmentGenerationDefinition
{
SnapshotQuery = GetElementValue(fragmentGenerationDefinition, "SnapshotQuery"),
FragmentQuery = GetElementValue(fragmentGenerationDefinition, "FragmentQuery")
};
// get generic exclude columns
var rdfTemplatesElem = xElement.Descendants("RdfTemplates").FirstOrDefault();
if (rdfTemplatesElem.Attribute("genericExcludes") != null)
{
fragDef.GenericTemplateExcludeColumns = new List <string>(rdfTemplatesElem.Attribute("genericExcludes").Value.Split(','));
}
// get lines
var patternLines = new List <string>();
foreach (var lineElement in fragmentGenerationDefinition.Descendants("li"))
{
patternLines.Add(lineElement.Value.Replace("{{", "<").Replace("}}", ">"));
}
fragDef.RdfTemplateLines = patternLines;
def.FragmentGenerationDefinitions.Add(fragDef);
}
_publishingDefinitions.Add(def);
}
RawConfig = configRoot.ToString();
IsEnabled = true;
}
public DataSourceManager(OdbcCollectionProvider provider, ResourcePublishingDefinition definition)
{
_provider = provider;
_definition = definition;
}
public override Stream GetFragment(string id, string contentType)
{
// need to see which definition we match
ResourcePublishingDefinition definition = null;
UriTemplateMatch match = null;
foreach (var resourcePublishingDefinition in _publishingDefinitions)
{
var newuri = new Uri(id);
match = resourcePublishingDefinition.UriTemplate.Match(resourcePublishingDefinition.ResourcePrefix, newuri);
if (match != null)
{
definition = resourcePublishingDefinition;
break;
}
}
if (definition == null)
{
throw new Exception("Unable to find matching definition for uri " + id);
}
var sb = new StringBuilder();
foreach (var generationDefinition in definition.FragmentGenerationDefinitions)
{
try
{
var data = ExecuteQuery(_dataSourceConnectionString, generationDefinition.FragmentQuery.Replace("[[id]]", match.BoundVariables["id"]));
foreach (DataRow row in data.Rows)
{
var dra = new DbDataRow(row);
foreach (var line in generationDefinition.RdfTemplateLines)
{
var linePattern = new NTripleLinePattern(line);
linePattern.GenerateNTriples(sb, dra, generationDefinition.GenericTemplateExcludeColumns, contentType.Equals("xml"));
}
}
}
catch (Exception ex)
{
Logging.LogError(1, "Error processing definition {0} {1} {2} {3}", ex.Message, generationDefinition.SnapshotQuery, _dataSourceConnectionString, ex.StackTrace);
}
}
try
{
var g = new Graph();
var parser = new NTriplesParser(TokenQueueMode.SynchronousBufferDuringParsing);
var triplesStr = sb.ToString();
parser.Load(g, new StringReader(triplesStr));
if (contentType.Equals("xml"))
{
var ms = new MemoryStream();
var sw = new StreamWriter(ms, Encoding.UTF8);
var rdfxmlwriter = new RdfXmlWriter();
var strw = new System.IO.StringWriter();
rdfxmlwriter.Save(g, strw);
var data = strw.ToString();
data = data.Replace("~~~2B~~~", "%2B");
data = data.Replace("~~~SLASH~~~", "%2F");
data = data.Replace("utf-16", "utf-8");
sw.Write(data);
sw.Flush();
ms.Seek(0, SeekOrigin.Begin);
return(ms);
}
else
{
var ms = new MemoryStream();
var sw = new StreamWriter(ms);
sw.Write(triplesStr);
sw.Flush();
ms.Seek(0, SeekOrigin.Begin);
return(ms);
}
}
catch (Exception ex)
{
Logging.LogError(1, "Error getting fragment {0} {1}", ex.Message, ex.StackTrace);
throw;
}
}
public DataSourceManager(OdbcCollectionProvider provider, ResourcePublishingDefinition definition)
{
_provider = provider;
_definition = definition;
}
