# Uses of Class
org.apache.lucene.queryparser.flexible.core.processors.QueryNodeProcessorImpl

Packages that use QueryNodeProcessorImpl
Package
Description
org.apache.lucene.queryparser.flexible.core.processors
Interfaces and implementations used by query node processors
org.apache.lucene.queryparser.flexible.precedence.processors
Lucene Precedence Query Parser Processors
org.apache.lucene.queryparser.flexible.standard.processors
Lucene Query Node Processors.

- ## Uses of QueryNodeProcessorImpl in org.apache.lucene.queryparser.flexible.core.processors

  Subclasses of QueryNodeProcessorImpl in org.apache.lucene.queryparser.flexible.core.processors
  Modifier and Type
  Class
  Description
  `class`
  `NoChildOptimizationQueryNodeProcessor`
  A `NoChildOptimizationQueryNodeProcessor` removes every BooleanQueryNode, BoostQueryNode, TokenizedPhraseQueryNode or ModifierQueryNode that do not have a valid children.
  `class`
  `RemoveDeletedQueryNodesProcessor`
  A `QueryNodeProcessorPipeline` class removes every instance of `DeletedQueryNode` from a query node tree.

- ## Uses of QueryNodeProcessorImpl in org.apache.lucene.queryparser.flexible.precedence.processors

  Subclasses of QueryNodeProcessorImpl in org.apache.lucene.queryparser.flexible.precedence.processors
  Modifier and Type
  Class
  Description
  `class`
  `BooleanModifiersQueryNodeProcessor`
  This processor is used to apply the correct `ModifierQueryNode` to `BooleanQueryNode`s children.

- ## Uses of QueryNodeProcessorImpl in org.apache.lucene.queryparser.flexible.standard.processors

  Subclasses of QueryNodeProcessorImpl in org.apache.lucene.queryparser.flexible.standard.processors
  Modifier and Type
  Class
  Description
  `class`
  `AllowLeadingWildcardProcessor`
  This processor verifies if `StandardQueryConfigHandler.ConfigurationKeys.ALLOW_LEADING_WILDCARD` is defined in the `QueryConfigHandler`.
  `class`
  `AnalyzerQueryNodeProcessor`
  This processor verifies if `StandardQueryConfigHandler.ConfigurationKeys.ANALYZER` is defined in the `QueryConfigHandler`.
  `class`
  `BooleanSingleChildOptimizationQueryNodeProcessor`
  This processor removes every `BooleanQueryNode` that contains only one child and returns this child.
  `class`
  `BoostQueryNodeProcessor`
  This processor iterates the query node tree looking for every `FieldableNode` that has `StandardQueryConfigHandler.ConfigurationKeys.BOOST` in its config.
  `class`
  `DefaultPhraseSlopQueryNodeProcessor`
  This processor verifies if `StandardQueryConfigHandler.ConfigurationKeys.PHRASE_SLOP` is defined in the `QueryConfigHandler`.
  `class`
  `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.
  `class`
  `IntervalQueryNodeProcessor`
  This processor makes sure that `StandardQueryConfigHandler.ConfigurationKeys.ANALYZER` is defined in the `QueryConfigHandler` and injects this analyzer into `IntervalQueryNode`s.
  `class`
  `MatchAllDocsQueryNodeProcessor`
  This processor converts every `WildcardQueryNode` that is "*:*" to `MatchAllDocsQueryNode`.
  `class`
  `MultiFieldQueryNodeProcessor`
  This processor is used to expand terms so the query looks for the same term in different fields.
  `class`
  `MultiTermRewriteMethodProcessor`
  This processor instates the default `MultiTermQuery.RewriteMethod`, `MultiTermQuery.CONSTANT_SCORE_BLENDED_REWRITE`, for multi-term query nodes.
  `class`
  `OpenRangeQueryNodeProcessor`
  Processes `TermRangeQuery`s with open ranges.
  `class`
  `PhraseSlopQueryNodeProcessor`
  This processor removes invalid `SlopQueryNode` objects in the query node tree.
  `class`
  `PointQueryNodeProcessor`
  This processor is used to convert `FieldQueryNode`s to `PointRangeQueryNode`s.
  `class`
  `PointRangeQueryNodeProcessor`
  This processor is used to convert `TermRangeQueryNode`s to `PointRangeQueryNode`s.
  `class`
  `RegexpQueryNodeProcessor`
  Processor for Regexp queries.
  `class`
  `RemoveEmptyNonLeafQueryNodeProcessor`
  This processor removes every `QueryNode` that is not a leaf and has not children.
  `class`
  `TermRangeQueryNodeProcessor`
  This processors process `TermRangeQueryNode`s.
  `class`
  `WildcardQueryNodeProcessor`
  The `StandardSyntaxParser` creates `PrefixWildcardQueryNode` nodes which have values containing the prefixed wildcard.