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 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;
}
}
