Class QueryNode

A QueryNode is the default implementation of the interface IQueryNode

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

Fields

PLAINTEXT_FIELD_NAME

index default field

Declaration
public static readonly string PLAINTEXT_FIELD_NAME
Field Value
Type Description
string

m_toQueryStringIgnoreFields

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

Declaration
protected bool m_toQueryStringIgnoreFields
Field Value
Type Description
bool

Properties

IsLeaf

verify if a node is a Leaf node

Declaration
public virtual bool IsLeaf { get; protected set; }
Property Value
Type Description
bool

IsRoot

A QueryNode is the default implementation of the interface IQueryNode

Declaration
protected virtual bool IsRoot { get; }
Property Value
Type Description
bool

Parent

A QueryNode is the default implementation of the interface IQueryNode

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

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<string, object>

Methods

Add(IQueryNode)

add a new child to a non Leaf node

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

Add(IList<IQueryNode>)

A QueryNode is the default implementation of the interface IQueryNode

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

Allocate()

A QueryNode is the default implementation of the interface IQueryNode

Declaration
protected virtual void Allocate()

Clone()

A QueryNode is the default implementation of the interface IQueryNode

Declaration
public virtual object Clone()
Returns
Type Description
object

CloneTree()

Recursive clone the IQueryNode tree. The tags are not copied to the new tree when you call the CloneTree() method.

Declaration
public virtual IQueryNode CloneTree()
Returns
Type Description
IQueryNode

the cloned tree

ContainsTag(string)

verify if a node contains a tag

Declaration
public virtual bool ContainsTag(string tagName)
Parameters
Type Name Description
string tagName
Returns
Type Description
bool

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>

GetTag(string)

Returns object stored under that tag name

Declaration
public virtual object GetTag(string tagName)
Parameters
Type Name Description
string tagName
Returns
Type Description
object

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
string fld

field name
Returns
Type Description
bool

true if fld is the default field

RemoveChildren(IQueryNode)

Remove a child node.

Declaration
public virtual void RemoveChildren(IQueryNode childNode)
Parameters
Type Name Description
IQueryNode childNode

Which child to remove.

RemoveFromParent()

Removes this query node from its parent.

Declaration
public virtual void RemoveFromParent()

Set(IList<IQueryNode>)

reset the children of a node

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

SetTag(string, object)

Associate the specified value with the specified tagName. If the tagName already exists, the old value is replaced. The tagName and value cannot be null. tagName will be converted to lowercase.

Declaration
public virtual void SetTag(string tagName, object value)
Parameters
Type Name Description
string tagName
object value

ToQueryString(IEscapeQuerySyntax)

convert to a query string understood by the query parser

Declaration
public abstract string ToQueryString(IEscapeQuerySyntax escapeSyntaxParser)
Parameters
Type Name Description
IEscapeQuerySyntax escapeSyntaxParser
Returns
Type Description
string

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
string
Overrides
See Also

TryGetTag(string, out object)

Gets the tag associated with the specified tagName.

Declaration
public virtual bool TryGetTag(string tagName, out object tag)
Parameters
Type Name Description
string tagName
object tag
Returns
Type Description
bool

UnsetTag(string)

Unset a tag. tagName will be converted to lowercase.

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

Implements