Package org.apache.lucene.queryParser.standard.processors

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

See: Description

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.
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.
GroupQueryNodeProcessor	The SyntaxParser generates query node trees that consider the boolean operator precedence, but Lucene current syntax does not support boolean precedence, so this processor remove all the precedence and apply the equivalent modifier according to the boolean operation defined on an specific query node.
LowercaseExpandedTermsQueryNodeProcessor	This processor verifies if StandardQueryConfigHandler.ConfigurationKeys.LOWERCASE_EXPANDED_TERMS is defined in the QueryConfigHandler.
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_AUTO_REWRITE_DEFAULT, for multi-term query nodes.
NumericQueryNodeProcessor	This processor is used to convert FieldQueryNodes to NumericRangeQueryNodes.
NumericRangeQueryNodeProcessor	This processor is used to convert ParametricRangeQueryNodes to NumericRangeQueryNodes.
ParametricRangeQueryNodeProcessor	This processor converts ParametricRangeQueryNode objects to RangeQueryNode objects.
PhraseSlopQueryNodeProcessor	This processor removes invalid SlopQueryNode objects in the query node tree.
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.
WildcardQueryNodeProcessor	The StandardSyntaxParser creates PrefixWildcardQueryNode nodes which have values containing the prefixed wildcard.

Package org.apache.lucene.queryParser.standard.processors Description

Lucene Query Node Processors

The package org.apache.lucene.queryParser.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.