Class QueryNode

A QueryNode is the default implementation of the interface IQueryNode

Inheritance
System.Object
QueryNode
BooleanQueryNode
BoostQueryNode
DeletedQueryNode
FieldQueryNode
GroupQueryNode
MatchAllDocsQueryNode
ModifierQueryNode
OpaqueQueryNode
PathQueryNode
PhraseSlopQueryNode
SlopQueryNode
TokenizedPhraseQueryNode
AbstractRangeQueryNode<T>
MultiPhraseQueryNode
NumericQueryNode
RegexpQueryNode
Implements
Namespace: Lucene.Net.QueryParsers.Flexible.Core.Nodes
Assembly: Lucene.Net.QueryParser.dll
Syntax
public abstract class QueryNode : object, IQueryNode

Fields

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m_toQueryStringIgnoreFields

If set to true the the method toQueryString will not write field names

Declaration
protected bool m_toQueryStringIgnoreFields
Field Value
Type Description
System.Boolean
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PLAINTEXT_FIELD_NAME

index default field

Declaration
public static readonly string PLAINTEXT_FIELD_NAME
Field Value
Type Description
System.String

Properties

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IsLeaf

Declaration
public virtual bool IsLeaf { get; protected set; }
Property Value
Type Description
System.Boolean
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IsRoot

Declaration
protected virtual bool IsRoot { get; }
Property Value
Type Description
System.Boolean
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Parent

Declaration
public virtual IQueryNode Parent { get; }
Property Value
Type Description
IQueryNode
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TagMap

Gets a map containing all tags attached to this query node.

Declaration
public virtual IDictionary<string, object> TagMap { get; }
Property Value
Type Description
IDictionary<System.String, System.Object>

Methods

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Add(IList<IQueryNode>)

Declaration
public void Add(IList<IQueryNode> children)
Parameters
Type Name Description
IList<IQueryNode> children
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Add(IQueryNode)

Declaration
public void Add(IQueryNode child)
Parameters
Type Name Description
IQueryNode child
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Allocate()

Declaration
protected virtual void Allocate()
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Clone()

Declaration
public virtual object Clone()
Returns
Type Description
System.Object
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CloneTree()

Declaration
public virtual IQueryNode CloneTree()
Returns
Type Description
IQueryNode
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ContainsTag(String)

verify if a node contains a tag

Declaration
public virtual bool ContainsTag(string tagName)
Parameters
Type Name Description
System.String tagName
Returns
Type Description
System.Boolean
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GetChildren()

a List for QueryNode object. Returns null, for nodes that do not contain children. All leaf Nodes return null.

Declaration
public IList<IQueryNode> GetChildren()
Returns
Type Description
IList<IQueryNode>
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GetTag(String)

Declaration
public virtual object GetTag(string tagName)
Parameters
Type Name Description
System.String tagName
Returns
Type Description
System.Object
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IsDefaultField(String)

This method is use toQueryString to detect if fld is the default field

Declaration
protected virtual bool IsDefaultField(string fld)
Parameters
Type Name Description
System.String fld

field name
Returns
Type Description
System.Boolean

true if fld is the default field
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RemoveFromParent()

Declaration
public virtual void RemoveFromParent()
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Set(IList<IQueryNode>)

Declaration
public void Set(IList<IQueryNode> children)
Parameters
Type Name Description
IList<IQueryNode> children
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SetTag(String, Object)

Declaration
public virtual void SetTag(string tagName, object value)
Parameters
Type Name Description
System.String tagName
System.Object value
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ToQueryString(IEscapeQuerySyntax)

Declaration
public abstract string ToQueryString(IEscapeQuerySyntax escapeSyntaxParser)
Parameters
Type Name Description
IEscapeQuerySyntax escapeSyntaxParser
Returns
Type Description
System.String
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ToString()

Every implementation of this class should return pseudo xml like this:

For FieldQueryNode: <field start='1' end='2' field='subject' text='foo'/>

Declaration
public override string ToString()
Returns
Type Description
System.String
See Also
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UnsetTag(String)

Declaration
public virtual void UnsetTag(string tagName)
Parameters
Type Name Description
System.String tagName

Implements