org.apache.lucene.queryparser.flexible.core.processors

Class RemoveDeletedQueryNodesProcessor

java.lang.Object

org.apache.lucene.queryparser.flexible.core.processors.QueryNodeProcessorImpl

org.apache.lucene.queryparser.flexible.core.processors.RemoveDeletedQueryNodesProcessor

All Implemented Interfaces:

QueryNodeProcessor

public class RemoveDeletedQueryNodesProcessor
extends QueryNodeProcessorImpl

A QueryNodeProcessorPipeline class removes every instance of DeletedQueryNode from a query node tree. If the resulting root node is a DeletedQueryNode, MatchNoDocsQueryNode is returned.

Constructor Summary

Constructors

Constructor and Description
RemoveDeletedQueryNodesProcessor()

Method Summary

Modifier and Type	Method and Description
QueryNode	process(QueryNode queryTree) Processes a query node tree.

Methods inherited from class org.apache.lucene.queryparser.flexible.core.processors.QueryNodeProcessorImpl

getQueryConfigHandler, setQueryConfigHandler

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RemoveDeletedQueryNodesProcessor

public RemoveDeletedQueryNodesProcessor()

Method Detail

process

public QueryNode process(QueryNode queryTree)
                  throws QueryNodeException

Description copied from interface: QueryNodeProcessor

Processes a query node tree. It may return the same or another query tree. I should never return null.

Specified by:

process in interface QueryNodeProcessor

Overrides:

process in class QueryNodeProcessorImpl

Parameters:

queryTree - tree root node

Returns:

the processed query tree

Throws:

QueryNodeException