org.apache.lucene.queryparser.flexible.standard.processors
Class BoostQueryNodeProcessor
java.lang.Object
org.apache.lucene.queryparser.flexible.core.processors.QueryNodeProcessorImpl
org.apache.lucene.queryparser.flexible.standard.processors.BoostQueryNodeProcessor
- All Implemented Interfaces:
- QueryNodeProcessor
public class BoostQueryNodeProcessor
- extends QueryNodeProcessorImpl
This processor iterates the query node tree looking for every
FieldableNode
that has StandardQueryConfigHandler.ConfigurationKeys.BOOST
in its
config. If there is, the boost is applied to that FieldableNode
.
- See Also:
StandardQueryConfigHandler.ConfigurationKeys.BOOST
,
QueryConfigHandler
,
FieldableNode
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
BoostQueryNodeProcessor
public BoostQueryNodeProcessor()
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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