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

Class MultiFieldQueryNodeProcessor

java.lang.Object

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

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

All Implemented Interfaces:

QueryNodeProcessor

public class MultiFieldQueryNodeProcessor
extends QueryNodeProcessorImpl

This processor is used to expand terms so the query looks for the same term in different fields. It also boosts a query based on its field.

This processor looks for every FieldableNode contained in the query node tree. If a FieldableNode is found, it checks if there is a StandardQueryConfigHandler.ConfigurationKeys.MULTI_FIELDS defined in the QueryConfigHandler. If there is, the FieldableNode is cloned N times and the clones are added to a BooleanQueryNode together with the original node. N is defined by the number of fields that it will be expanded to. The BooleanQueryNode is returned.

See Also:

StandardQueryConfigHandler.ConfigurationKeys.MULTI_FIELDS

Constructor Summary

Constructors

Constructor and Description
MultiFieldQueryNodeProcessor()

Method Summary

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

getQueryConfigHandler, process, setQueryConfigHandler

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiFieldQueryNodeProcessor

public MultiFieldQueryNodeProcessor()