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

Lucene Query Node Processors.

Lucene Query Node Processors

The package org.apache.lucene.queryparser.flexible.standard.processors contains every processor needed to assembly a pipeline that modifies the query node tree according to the actual Lucene queries.

These processors are already assembled correctly in the StandardQueryNodeProcessorPipeline.

Class Summary

Class	Description
AllowLeadingWildcardProcessor	This processor verifies if StandardQueryConfigHandler.ConfigurationKeys.ALLOW_LEADING_WILDCARD is defined in the QueryConfigHandler.
AnalyzerQueryNodeProcessor	This processor verifies if StandardQueryConfigHandler.ConfigurationKeys.ANALYZER is defined in the QueryConfigHandler.
BooleanQuery2ModifierNodeProcessor	This processor is used to apply the correct ModifierQueryNode to BooleanQueryNodes children.
BooleanSingleChildOptimizationQueryNodeProcessor	This processor removes every BooleanQueryNode that contains only one child and returns this child.
BoostQueryNodeProcessor	This processor iterates the query node tree looking for every FieldableNode that has StandardQueryConfigHandler.ConfigurationKeys.BOOST in its config.
DefaultPhraseSlopQueryNodeProcessor	This processor verifies if StandardQueryConfigHandler.ConfigurationKeys.PHRASE_SLOP is defined in the QueryConfigHandler.
FuzzyQueryNodeProcessor	This processor iterates the query node tree looking for every FuzzyQueryNode, when this kind of node is found, it checks on the query configuration for StandardQueryConfigHandler.ConfigurationKeys.FUZZY_CONFIG, gets the fuzzy prefix length and default similarity from it and set to the fuzzy node.
IntervalQueryNodeProcessor	This processor makes sure that StandardQueryConfigHandler.ConfigurationKeys.ANALYZER is defined in the QueryConfigHandler and injects this analyzer into IntervalQueryNodes.
MatchAllDocsQueryNodeProcessor	This processor converts every WildcardQueryNode that is "*:*" to MatchAllDocsQueryNode.
MultiFieldQueryNodeProcessor	This processor is used to expand terms so the query looks for the same term in different fields.
MultiTermRewriteMethodProcessor	This processor instates the default MultiTermQuery.RewriteMethod, MultiTermQuery.CONSTANT_SCORE_BLENDED_REWRITE, for multi-term query nodes.
OpenRangeQueryNodeProcessor	Processes TermRangeQuerys with open ranges.
PhraseSlopQueryNodeProcessor	This processor removes invalid SlopQueryNode objects in the query node tree.
PointQueryNodeProcessor	This processor is used to convert FieldQueryNodes to PointRangeQueryNodes.
PointRangeQueryNodeProcessor	This processor is used to convert TermRangeQueryNodes to PointRangeQueryNodes.
RegexpQueryNodeProcessor	Processor for Regexp queries.
RemoveEmptyNonLeafQueryNodeProcessor	This processor removes every QueryNode that is not a leaf and has not children.
StandardQueryNodeProcessorPipeline	This pipeline has all the processors needed to process a query node tree, generated by StandardSyntaxParser, already assembled.
TermRangeQueryNodeProcessor	This processors process TermRangeQueryNodes.
WildcardQueryNodeProcessor	The StandardSyntaxParser creates PrefixWildcardQueryNode nodes which have values containing the prefixed wildcard.