public ResultInstruction(IQueryNode node, EvalHandler eval, object payload, bool exclude)
{
this.node = node;
this.eval = eval;
this.payload = payload;
this.exclude = exclude;
}
public OperandInstruction(IQueryNode node, EvalHandler eval, object payload, bool not)
{
leftInstruction = BuildInstruction(node.children[0], eval, payload, not);
rightInstruction = BuildInstruction(node.children[1], eval, payload, not);
this.eval = eval;
this.payload = payload;
}
internal static Instruction BuildInstruction(IQueryNode node, EvalHandler eval, object payload, bool not)
{
switch (node.type)
{
case QueryNodeType.And:
{
Assert.IsFalse(node.leaf, "And node cannot be leaf.");
if (!not)
{
return(new AndInstruction(node, eval, payload, not));
}
else
{
return(new OrInstruction(node, eval, payload, not));
}
}
case QueryNodeType.Or:
{
Assert.IsFalse(node.leaf, "Or node cannot be leaf.");
if (!not)
{
return(new OrInstruction(node, eval, payload, not));
}
else
{
return(new AndInstruction(node, eval, payload, not));
}
}
case QueryNodeType.Not:
{
Assert.IsFalse(node.leaf, "Not node cannot be leaf.");
Instruction instruction = BuildInstruction(node.children[0], eval, payload, !not);
return(instruction);
}
case QueryNodeType.Filter:
case QueryNodeType.Search:
{
Assert.IsNotNull(node);
return(new ResultInstruction(node, eval, payload, not));
}
case QueryNodeType.Where:
{
Assert.IsFalse(node.leaf, "Where node cannot be leaf.");
return(BuildInstruction(node.children[0], eval, payload, not));
}
}
return(null);
}
public OrInstruction(IQueryNode node, EvalHandler eval, object payload, bool not) : base(node, eval, payload, not)
{
combine = Combine.Union;
}
public AndInstruction(IQueryNode node, EvalHandler eval, object dataSet, bool not) : base(node, eval, dataSet, not)
{
combine = Combine.Intersection;
}
public SearchIndexerQuery(QueryGraph graph, EvalHandler handler)
: base(graph, handler)
{
}
public SearchQueryEvaluator(QueryGraph graph, EvalHandler handler)
{
this.graph = graph;
graph.Optimize(true, true);
m_Handler = handler;
}
public FindFilesQuery(QueryGraph graph, EvalHandler handler)
: base(graph, handler)
{
}
