# Uses of Interface
org.apache.lucene.queryparser.flexible.core.processors.QueryNodeProcessor

Packages that use QueryNodeProcessor
Package
Description
org.apache.lucene.queryparser.flexible.core
Core classes of the flexible query parser framework.
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 QueryNodeProcessor in org.apache.lucene.queryparser.flexible.core

Methods in org.apache.lucene.queryparser.flexible.core that return QueryNodeProcessor
Modifier and Type
Method
Description
`QueryNodeProcessor`
QueryParserHelper.`getQueryNodeProcessor()`
Returns the processor object used to process the query node tree, it returns `null` if no processor is used.
Methods in org.apache.lucene.queryparser.flexible.core with parameters of type QueryNodeProcessor
Modifier and Type
Method
Description
`void`
QueryParserHelper.`setQueryNodeProcessor(QueryNodeProcessor processor)`
Sets the processor that will be used to process the query node tree.
Constructors in org.apache.lucene.queryparser.flexible.core with parameters of type QueryNodeProcessor
Modifier
Constructor
Description
``
`QueryParserHelper(QueryConfigHandler queryConfigHandler, SyntaxParser syntaxParser, QueryNodeProcessor processor, QueryBuilder builder)`
Creates a query parser helper object using the specified configuration, text parser, processor and builder.

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

Classes in org.apache.lucene.queryparser.flexible.core.processors that implement QueryNodeProcessor
Modifier and Type
Class
Description
`class`
`NoChildOptimizationQueryNodeProcessor`
A `NoChildOptimizationQueryNodeProcessor` removes every BooleanQueryNode, BoostQueryNode, TokenizedPhraseQueryNode or ModifierQueryNode that do not have a valid children.
`class`
`QueryNodeProcessorImpl`
This is a default implementation for the `QueryNodeProcessor` interface, it's an abstract class, so it should be extended by classes that want to process a `QueryNode` tree.
`class`
`QueryNodeProcessorPipeline`
A `QueryNodeProcessorPipeline` class should be used to build a query node processor pipeline.
`class`
`RemoveDeletedQueryNodesProcessor`
A `QueryNodeProcessorPipeline` class removes every instance of `DeletedQueryNode` from a query node tree.
Methods in org.apache.lucene.queryparser.flexible.core.processors that return QueryNodeProcessor
Modifier and Type
Method
Description
`QueryNodeProcessor`
QueryNodeProcessorPipeline.`get(int index)`
`QueryNodeProcessor`
QueryNodeProcessorPipeline.`remove(int index)`
`QueryNodeProcessor`
QueryNodeProcessorPipeline.`set(int index, QueryNodeProcessor processor)`
Methods in org.apache.lucene.queryparser.flexible.core.processors that return types with arguments of type QueryNodeProcessor
Modifier and Type
Method
Description
`Iterator<QueryNodeProcessor>`
QueryNodeProcessorPipeline.`iterator()`
`ListIterator<QueryNodeProcessor>`
QueryNodeProcessorPipeline.`listIterator()`
`ListIterator<QueryNodeProcessor>`
QueryNodeProcessorPipeline.`listIterator(int index)`
`List<QueryNodeProcessor>`
QueryNodeProcessorPipeline.`subList(int fromIndex, int toIndex)`
Methods in org.apache.lucene.queryparser.flexible.core.processors with parameters of type QueryNodeProcessor
Modifier and Type
Method
Description
`void`
QueryNodeProcessorPipeline.`add(int index, QueryNodeProcessor processor)`
`boolean`
QueryNodeProcessorPipeline.`add(QueryNodeProcessor processor)`
`QueryNodeProcessor`
QueryNodeProcessorPipeline.`set(int index, QueryNodeProcessor processor)`
Method parameters in org.apache.lucene.queryparser.flexible.core.processors with type arguments of type QueryNodeProcessor
Modifier and Type
Method
Description
`boolean`
QueryNodeProcessorPipeline.`addAll(int index, Collection<? extends QueryNodeProcessor> c)`
`boolean`
QueryNodeProcessorPipeline.`addAll(Collection<? extends QueryNodeProcessor> c)`

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

Classes in org.apache.lucene.queryparser.flexible.precedence.processors that implement QueryNodeProcessor
Modifier and Type
Class
Description
`class`
`BooleanModifiersQueryNodeProcessor`
This processor is used to apply the correct `ModifierQueryNode` to `BooleanQueryNode`s children.
`class`
`PrecedenceQueryNodeProcessorPipeline`
This processor pipeline extends `StandardQueryNodeProcessorPipeline` and enables boolean precedence on it.

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

Classes in org.apache.lucene.queryparser.flexible.standard.processors that implement QueryNodeProcessor
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`
`BooleanQuery2ModifierNodeProcessor`
This processor is used to apply the correct `ModifierQueryNode` to `BooleanQueryNode`s children.
`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`
`StandardQueryNodeProcessorPipeline`
This pipeline has all the processors needed to process a query node tree, generated by `StandardSyntaxParser`, already assembled.
`class`
`TermRangeQueryNodeProcessor`
This processors process `TermRangeQueryNode`s.
`class`
`WildcardQueryNodeProcessor`
The `StandardSyntaxParser` creates `PrefixWildcardQueryNode` nodes which have values containing the prefixed wildcard.