org.apache.lucene.queryParser.standard.processors
Class WildcardQueryNodeProcessor
java.lang.Object
org.apache.lucene.queryParser.core.processors.QueryNodeProcessorImpl
org.apache.lucene.queryParser.standard.processors.WildcardQueryNodeProcessor
- All Implemented Interfaces:
- QueryNodeProcessor
public class WildcardQueryNodeProcessor
- extends QueryNodeProcessorImpl
The StandardSyntaxParser
creates PrefixWildcardQueryNode
nodes which
have values containing the prefixed wildcard. However, Lucene
PrefixQuery
cannot contain the prefixed wildcard. So, this processor
basically removed the prefixed wildcard from the
PrefixWildcardQueryNode
value.
- See Also:
PrefixQuery
,
PrefixWildcardQueryNode
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
WildcardQueryNodeProcessor
public WildcardQueryNodeProcessor()
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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