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

java.lang.Object
  extended by org.apache.lucene.queryparser.flexible.core.processors.QueryNodeProcessorImpl
      extended by org.apache.lucene.queryparser.flexible.standard.processors.NumericRangeQueryNodeProcessor
All Implemented Interfaces:
QueryNodeProcessor

public class NumericRangeQueryNodeProcessor
extends QueryNodeProcessorImpl

This processor is used to convert TermRangeQueryNodes to NumericRangeQueryNodes. It looks for StandardQueryConfigHandler.ConfigurationKeys.NUMERIC_CONFIG set in the FieldConfig of every TermRangeQueryNode found. If StandardQueryConfigHandler.ConfigurationKeys.NUMERIC_CONFIG is found, it considers that TermRangeQueryNode to be a numeric range query and convert it to NumericRangeQueryNode.

See Also:
StandardQueryConfigHandler.ConfigurationKeys.NUMERIC_CONFIG, TermRangeQueryNode, NumericConfig, NumericRangeQueryNode

Constructor Summary
NumericRangeQueryNodeProcessor()
          Constructs an empty NumericRangeQueryNode object.
 
Method Summary
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
 

Constructor Detail

NumericRangeQueryNodeProcessor

public NumericRangeQueryNodeProcessor()
Constructs an empty NumericRangeQueryNode object.

Method Detail

postProcessNode

protected QueryNode postProcessNode(QueryNode node)
                             throws QueryNodeException
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
Throws:
QueryNodeException - if something goes wrong during the query node processing

preProcessNode

protected QueryNode preProcessNode(QueryNode node)
                            throws QueryNodeException
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
Throws:
QueryNodeException - if something goes wrong during the query node processing

setChildrenOrder

protected List<QueryNode> setChildrenOrder(List<QueryNode> children)
                                    throws QueryNodeException
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
Throws:
QueryNodeException - if something goes wrong during the query node processing


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