Class BooleanQuery2ModifierNodeProcessor

This processor is used to apply the correct ModifierQueryNode to BooleanQueryNodes children. This is a variant of BooleanModifiersQueryNodeProcessor which ignores precedence.

The StandardSyntaxParser knows the rules of precedence, but lucene does not. e.g. 

(A AND B OR C AND D)
ist treated like

(+A +B +C +D)
.

This processor walks through the query node tree looking for BooleanQueryNodes. If an AndQueryNode is found, every child, which is not a ModifierQueryNode or the ModifierQueryNode is MOD_NONE, becomes a MOD_REQ. For default BooleanQueryNode, it checks the default operator is AND, if it is, the same operation when an AndQueryNode is found is applied to it. Each BooleanQueryNode which direct parent is also a BooleanQueryNode is removed (to ignore the rules of precedence).

Inheritance
System.Object
BooleanQuery2ModifierNodeProcessor
Implements
Namespace: Lucene.Net.QueryParsers.Flexible.Standard.Processors
Assembly: Lucene.Net.QueryParser.dll
Syntax
public class BooleanQuery2ModifierNodeProcessor : object, IQueryNodeProcessor

Constructors

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BooleanQuery2ModifierNodeProcessor()

Declaration
public BooleanQuery2ModifierNodeProcessor()

Methods

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FillChildrenBufferAndApplyModifiery(IQueryNode)

Declaration
protected virtual void FillChildrenBufferAndApplyModifiery(IQueryNode parent)
Parameters
Type Name Description
IQueryNode parent
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GetQueryConfigHandler()

Declaration
public virtual QueryConfigHandler GetQueryConfigHandler()
Returns
Type Description
QueryConfigHandler
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IsDefaultBooleanQueryNode(IQueryNode)

Declaration
protected virtual bool IsDefaultBooleanQueryNode(IQueryNode toTest)
Parameters
Type Name Description
IQueryNode toTest
Returns
Type Description
System.Boolean
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PostProcessNode(IQueryNode)

Declaration
protected virtual IQueryNode PostProcessNode(IQueryNode node)
Parameters
Type Name Description
IQueryNode node
Returns
Type Description
IQueryNode
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PreProcessNode(IQueryNode)

Declaration
protected virtual IQueryNode PreProcessNode(IQueryNode node)
Parameters
Type Name Description
IQueryNode node
Returns
Type Description
IQueryNode
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Process(IQueryNode)

Declaration
public virtual IQueryNode Process(IQueryNode queryTree)
Parameters
Type Name Description
IQueryNode queryTree
Returns
Type Description
IQueryNode
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ProcessChildren(IQueryNode)

Declaration
protected virtual void ProcessChildren(IQueryNode queryTree)
Parameters
Type Name Description
IQueryNode queryTree
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SetQueryConfigHandler(QueryConfigHandler)

Declaration
public virtual void SetQueryConfigHandler(QueryConfigHandler queryConfigHandler)
Parameters
Type Name Description
QueryConfigHandler queryConfigHandler
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TagModifierButDoNotOverride(IQueryNode, Modifier)

Declaration
protected virtual void TagModifierButDoNotOverride(IQueryNode node, Modifier mod)
Parameters
Type Name Description
IQueryNode node
Modifier mod

Implements

See Also