public void Remove(ResourceStatement resourceStatement)
{
MySqlCommand cmd = new MySqlCommand("DELETE FROM Statements WHERE " +
"subjectHash = " + resourceStatement.GetSubject().GetHashCode() + " AND " +
"predicateHash = " + resourceStatement.GetPredicate().GetHashCode() + " AND " +
"objectHash = " + resourceStatement.GetObject().GetHashCode() + " AND " +
"graphId = " + itsHashCode, itsConn);
cmd.ExecuteNonQuery();
}
public void Add(ResourceStatement resourceStatement)
{
if (!itsResourceStatements.ContainsKey(resourceStatement))
{
if (!HasNodeDenoting(resourceStatement.GetSubject()))
{
AddDenotation(MakeNameForResource(resourceStatement.GetSubject()), resourceStatement.GetSubject());
}
if (!HasNodeDenoting(resourceStatement.GetPredicate()))
{
AddDenotation(MakeNameForResource(resourceStatement.GetPredicate()), resourceStatement.GetPredicate());
}
if (!HasNodeDenoting(resourceStatement.GetObject()))
{
AddDenotation(MakeNameForResource(resourceStatement.GetObject()), resourceStatement.GetObject());
}
itsResourceStatements[resourceStatement] = resourceStatement;
}
}
public void Merge(ResourceStatementCollection statements, ResourceMap map)
{
IEnumerator statementEnumerator = statements.GetStatementEnumerator();
while (statementEnumerator.MoveNext())
{
ResourceStatement resStatement = (ResourceStatement)statementEnumerator.Current;
Node theSubject = (Node)map.GetBestDenotingNode(resStatement.GetSubject());
Arc thePredicate = (Arc)map.GetBestDenotingNode(resStatement.GetPredicate());
Node theObject = (Node)map.GetBestDenotingNode(resStatement.GetObject());
Statement statement = new Statement(theSubject, thePredicate, theObject);
Add(statement);
}
}
public void Write(RdfWriter writer)
{
writer.StartOutput();
IEnumerator statementEnum = GetStatementEnumerator();
while (statementEnum.MoveNext())
{
ResourceStatement statement = (ResourceStatement)statementEnum.Current;
writer.StartSubject();
GetBestDenotingNode(statement.GetSubject()).Write(writer);
writer.StartPredicate();
GetBestDenotingNode(statement.GetPredicate()).Write(writer);
writer.StartObject();
GetBestDenotingNode(statement.GetObject()).Write(writer);
writer.EndObject();
writer.EndPredicate();
writer.EndSubject();
}
writer.EndOutput();
}
public void Merge(ResourceStatementCollection statements, ResourceMap map)
{
if (this == statements)
{
return;
}
Hashtable equivalentResources = new Hashtable();
foreach (Resource resource in statements.ReferencedResources)
{
Resource internalResource = resource;
foreach (GraphMember member in map.GetNodesDenoting(resource))
{
if (HasResourceDenotedBy(member))
{
internalResource = GetResourceDenotedBy(member);
equivalentResources[resource] = internalResource;
break;
}
// Must be a new resource
// Remember this for when we're Adding statements
// TODO: move this outside the loop
equivalentResources[resource] = resource;
}
foreach (GraphMember member in map.GetNodesDenoting(resource))
{
AddDenotation(member, internalResource);
}
}
IEnumerator statementEnumerator = statements.GetStatementEnumerator();
while (statementEnumerator.MoveNext())
{
ResourceStatement statement = (ResourceStatement)statementEnumerator.Current;
ResourceStatement internalStatement = new ResourceStatement((Resource)equivalentResources[statement.GetSubject()],
(Resource)equivalentResources[statement.GetPredicate()],
(Resource)equivalentResources[statement.GetObject()]);
Add(internalStatement);
}
}
public bool Contains(ResourceStatement statement)
{
MySqlCommand cmd = new MySqlCommand("SELECT EXISTS (SELECT * FROM Statements s " +
"WHERE s.graphId = " + itsHashCode + " AND s.subjectHash = " + statement.GetSubject().GetHashCode() +
" AND s.predicateHash = " + statement.GetPredicate().GetHashCode() + " AND s.objectHash = " + statement.GetObject().GetHashCode() + ")", itsConn);
return(Convert.ToInt32(cmd.ExecuteScalar()) > 0);
}
public void Add(ResourceStatement statement)
{
AddStatement(statement.GetSubject().GetHashCode(), statement.GetPredicate().GetHashCode(), statement.GetObject().GetHashCode());
}