org.apache.lucene.queryParser.core.nodes
Class FieldQueryNode

java.lang.Object
  org.apache.lucene.queryParser.core.nodes.QueryNodeImpl
      org.apache.lucene.queryParser.core.nodes.FieldQueryNode

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, FieldableNode, QueryNode, TextableQueryNode

Direct Known Subclasses:

FuzzyQueryNode, ParametricQueryNode, QuotedFieldQueryNode, WildcardQueryNode

public class FieldQueryNode
extends QueryNodeImpl
implements TextableQueryNode, FieldableNode

A FieldQueryNode represents a element that contains field/text tuple

See Also:

Serialized Form

Field Summary

protected int	begin The term's begin position.
protected int	end The term's end position.
protected java.lang.CharSequence	field The term's field
protected int	positionIncrement The term's position increment.
protected java.lang.CharSequence	text The term's text.

Fields inherited from class org.apache.lucene.queryParser.core.nodes.QueryNodeImpl

PLAINTEXT_FIELD_NAME, toQueryStringIgnoreFields

Constructor Summary

FieldQueryNode(java.lang.CharSequence field, java.lang.CharSequence text, int begin, int end)

Method Summary

FieldQueryNode	cloneTree() Recursive clone the QueryNode tree The tags are not copied to the new tree when you call the cloneTree() method
int	getBegin()
int	getEnd()
java.lang.CharSequence	getField() Returns the field associated to the node and every node under it.
java.lang.String	getFieldAsString() returns null if the field was not specified in the query string
int	getPositionIncrement()
protected java.lang.CharSequence	getTermEscaped(EscapeQuerySyntax escaper)
protected java.lang.CharSequence	getTermEscapeQuoted(EscapeQuerySyntax escaper)
java.lang.CharSequence	getText() Returns the term.
java.lang.String	getTextAsString()
void	setBegin(int begin)
void	setEnd(int end)
void	setField(java.lang.CharSequence field) Associates the node to a field.
void	setPositionIncrement(int pi)
void	setText(java.lang.CharSequence text)
java.lang.CharSequence	toQueryString(EscapeQuerySyntax escaper) convert to a query string understood by the query parser
java.lang.String	toString() Every implementation of this class should return pseudo xml like this: For FieldQueryNode:

Methods inherited from class org.apache.lucene.queryParser.core.nodes.QueryNodeImpl

add, add, allocate, clone, containsTag, getChildren, getParent, getTag, getTags, isDefaultField, isLeaf, isRoot, set, setLeaf, setTag, unsetTag

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.lucene.queryParser.core.nodes.QueryNode

add, add, containsTag, getChildren, getParent, getTag, getTags, isLeaf, set, setTag, unsetTag

Field Detail

field

protected java.lang.CharSequence field

The term's field

text

protected java.lang.CharSequence text

The term's text.

begin

protected int begin

The term's begin position.

end

protected int end

The term's end position.

positionIncrement

protected int positionIncrement

The term's position increment.

Constructor Detail

FieldQueryNode

public FieldQueryNode(java.lang.CharSequence field,
                      java.lang.CharSequence text,
                      int begin,
                      int end)

Parameters:

field - - field name

text - - value

begin - - position in the query string

end - - position in the query string

Method Detail

getTermEscaped

protected java.lang.CharSequence getTermEscaped(EscapeQuerySyntax escaper)

getTermEscapeQuoted

protected java.lang.CharSequence getTermEscapeQuoted(EscapeQuerySyntax escaper)

toQueryString

public java.lang.CharSequence toQueryString(EscapeQuerySyntax escaper)

Description copied from interface: QueryNode

convert to a query string understood by the query parser

Specified by:

toQueryString in interface QueryNode

toString

public java.lang.String toString()

Description copied from class: QueryNodeImpl

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

Specified by:

toString in interface QueryNode

Overrides:

toString in class QueryNodeImpl

See Also:

QueryNode.toString()

getTextAsString

public java.lang.String getTextAsString()

Returns:

the term

getFieldAsString

public java.lang.String getFieldAsString()

returns null if the field was not specified in the query string

Returns:

the field

getBegin

public int getBegin()

setBegin

public void setBegin(int begin)

getEnd

public int getEnd()

setEnd

public void setEnd(int end)

getField

public java.lang.CharSequence getField()

Description copied from interface: FieldableNode

Returns the field associated to the node and every node under it.

Specified by:

getField in interface FieldableNode

Returns:

the field name

setField

public void setField(java.lang.CharSequence field)

Description copied from interface: FieldableNode

Associates the node to a field.

Specified by:

setField in interface FieldableNode

Parameters:

field - the field name

getPositionIncrement

public int getPositionIncrement()

setPositionIncrement

public void setPositionIncrement(int pi)

getText

public java.lang.CharSequence getText()

Returns the term.

Specified by:

getText in interface TextableQueryNode

Returns:

The "original" form of the term.

setText

public void setText(java.lang.CharSequence text)

Specified by:

setText in interface TextableQueryNode

Parameters:

text - the text to set

cloneTree

public FieldQueryNode cloneTree()
                         throws java.lang.CloneNotSupportedException

Description copied from interface: QueryNode

Recursive clone the QueryNode tree The tags are not copied to the new tree when you call the cloneTree() method

Specified by:

cloneTree in interface QueryNode

Overrides:

cloneTree in class QueryNodeImpl

Returns:

the cloned tree

Throws:

java.lang.CloneNotSupportedException