void SelectSome(Statement template, StatementSink sink)
{
// Get a cursor over the first non-null component of template.
int[] stmts;
if (template.Subject != null)
{
stmts = GetStatements(template.Subject, 0);
}
else if (template.Predicate != null)
{
stmts = GetStatements(template.Predicate, 1);
}
else if (template.Object != null)
{
stmts = GetStatements(template.Object, 2);
}
else if (template.Meta != null)
{
stmts = GetStatements(template.Meta, 3);
}
else
{
throw new InvalidOperationException();
}
if (stmts == null)
{
return;
}
Hashtable createdResources = new Hashtable();
for (int i = 0; i < stmts[0]; i++)
{
Quad q = Quad.Deserialize(stmts, 1 + i * 4);
Statement s = QuadToStatement(q, createdResources);
if (template.Matches(s))
{
if (!sink.Add(s))
{
return;
}
}
}
}
