private static bool TryNonExclusiveQueryEnumeratedParent(
out ELNode foundNode,
out ELNodeEnumerator enumerator,
object key,
LogicVariable v,
ELNodeEnumerator parentEnumerator)
{
// Enumerated parent path
// NonUniqueParent/Something
foundNode = null;
if (v == null)
{
// NonUniqueParent/Key
// Enumerate parent, then do deterministic lookup for child.
enumerator = new ELNodeEnumeratorFixedChildFromParentEnumerator(parentEnumerator, key);
return true;
}
if (parentEnumerator.BindsVar(v))
{
// We're doing a search for a variable that's aready bound.
enumerator = new ELNodeEnumeratorPreboundVariable(parentEnumerator, v, false);
return true;
}
// NonUniqueParent/Variable
// Enumerate both parent and child.
enumerator = new ELNodeEnumeratorLogicVariableFromParentEnumerator(parentEnumerator, v);
return true;
}
private static bool TryNonExclusiveQueryEnumeratedParent(
out ELNode foundNode,
out ELNodeEnumerator enumerator,
object key,
LogicVariable v,
ELNodeEnumerator parentEnumerator)
{
// Enumerated parent path
// NonUniqueParent/Something
foundNode = null;
if (v == null)
{
// NonUniqueParent/Key
// Enumerate parent, then do deterministic lookup for child.
enumerator = new ELNodeEnumeratorFixedChildFromParentEnumerator(parentEnumerator, key);
return true;
}
if (parentEnumerator.BindsVar(v))
{
// We're doing a search for a variable that's aready bound.
enumerator = new ELNodeEnumeratorPreboundVariable(parentEnumerator, v, false);
return true;
}
// NonUniqueParent/Variable
// Enumerate both parent and child.
enumerator = new ELNodeEnumeratorLogicVariableFromParentEnumerator(parentEnumerator, v);
return true;
}