org.apache.lucene.queryparser.flexible.standard.processors

Class DefaultPhraseSlopQueryNodeProcessor

java.lang.Object

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

org.apache.lucene.queryparser.flexible.standard.processors.DefaultPhraseSlopQueryNodeProcessor

All Implemented Interfaces:

QueryNodeProcessor

public class DefaultPhraseSlopQueryNodeProcessor
extends QueryNodeProcessorImpl

This processor verifies if StandardQueryConfigHandler.ConfigurationKeys.PHRASE_SLOP is defined in the QueryConfigHandler. If it is, it looks for every TokenizedPhraseQueryNode and MultiPhraseQueryNode that does not have any SlopQueryNode applied to it and creates an SlopQueryNode and apply to it. The new SlopQueryNode has the same slop value defined in the configuration.

See Also:

SlopQueryNode, StandardQueryConfigHandler.ConfigurationKeys.PHRASE_SLOP

Constructor Summary

Constructors

Constructor and Description
DefaultPhraseSlopQueryNodeProcessor()

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

DefaultPhraseSlopQueryNodeProcessor

public DefaultPhraseSlopQueryNodeProcessor()

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