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

Class MultiTermRewriteMethodProcessor

java.lang.Object

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

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

All Implemented Interfaces:

QueryNodeProcessor

public class MultiTermRewriteMethodProcessor
extends QueryNodeProcessorImpl

This processor instates the default MultiTermQuery.RewriteMethod, MultiTermQuery.CONSTANT_SCORE_REWRITE, for multi-term query nodes.

Field Summary

Fields

Modifier and Type	Field and Description
static String	TAG_ID

Constructor Summary

Constructors

Constructor and Description
MultiTermRewriteMethodProcessor()

Method Summary

Modifier and Type	Method and Description
protected QueryNode	postProcessNode(QueryNode node) This method is invoked for every node when walking up the tree.
protected QueryNode	preProcessNode(QueryNode node) This method is invoked for every node when walking down the tree.
protected List<QueryNode>	setChildrenOrder(List<QueryNode> children) This method is invoked for every node that has at least on child.

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

getQueryConfigHandler, process, processChildren, setQueryConfigHandler

Methods inherited from class java.lang.Object

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

Field Detail

TAG_ID

public static final String TAG_ID

See Also:

Constant Field Values

Constructor Detail

MultiTermRewriteMethodProcessor

public MultiTermRewriteMethodProcessor()

Method Detail

postProcessNode

protected QueryNode postProcessNode(QueryNode node)

Description copied from class: QueryNodeProcessorImpl

This method is invoked for every node when walking up the tree.

Specified by:

postProcessNode in class QueryNodeProcessorImpl

Parameters:

node - node the query node to be post-processed

Returns:

a query node

preProcessNode

protected QueryNode preProcessNode(QueryNode node)

Description copied from class: QueryNodeProcessorImpl

This method is invoked for every node when walking down the tree.

Specified by:

preProcessNode in class QueryNodeProcessorImpl

Parameters:

node - the query node to be pre-processed

Returns:

a query node

setChildrenOrder

protected List<QueryNode> setChildrenOrder(List<QueryNode> children)

Description copied from class: QueryNodeProcessorImpl

This method is invoked for every node that has at least on child. It's invoked right before QueryNodeProcessorImpl.postProcessNode(QueryNode) is invoked.

Specified by:

setChildrenOrder in class QueryNodeProcessorImpl

Parameters:

children - the list containing all current node's children

Returns:

a new list containing all children that should be set to the current node