org.apache.lucene.queryparser.flexible.standard.nodes

Class NumericQueryNode

java.lang.Object

org.apache.lucene.queryparser.flexible.core.nodes.QueryNodeImpl

org.apache.lucene.queryparser.flexible.standard.nodes.NumericQueryNode

All Implemented Interfaces:

Cloneable, FieldableNode, FieldValuePairQueryNode<Number>, QueryNode, ValueQueryNode<Number>

public class NumericQueryNode
extends QueryNodeImpl
implements FieldValuePairQueryNode<Number>

This query node represents a field query that holds a numeric value. It is similar to FieldQueryNode, however the getValue() returns a Number.

See Also:

NumericConfig

Field Summary

Fields inherited from class org.apache.lucene.queryparser.flexible.core.nodes.QueryNodeImpl

PLAINTEXT_FIELD_NAME, toQueryStringIgnoreFields

Constructor Summary

Constructors

Constructor and Description
NumericQueryNode(CharSequence field, Number value, NumberFormat numberFormat) Creates a NumericQueryNode object using the given field, Number value and NumberFormat used to convert the value to String.

Method Summary

Methods

Modifier and Type	Method and Description
CharSequence	getField() Returns the field associated with this node.
NumberFormat	getNumberFormat() Returns the NumberFormat used to convert the value to String.
protected CharSequence	getTermEscaped(EscapeQuerySyntax escaper) This method is used to get the value converted to String and escaped using the given EscapeQuerySyntax.
Number	getValue() Returns the numeric value as Number.
void	setField(CharSequence fieldName) Sets the field associated with this node.
void	setNumberFormat(NumberFormat format) Sets the NumberFormat used to convert the value to String.
void	setValue(Number value) Sets the numeric value.
CharSequence	toQueryString(EscapeQuerySyntax escapeSyntaxParser) convert to a query string understood by the query parser
String	toString() Every implementation of this class should return pseudo xml like this: For FieldQueryNode: <field start='1' end='2' field='subject' text='foo'/>

Methods inherited from class org.apache.lucene.queryparser.flexible.core.nodes.QueryNodeImpl

add, add, allocate, clone, cloneTree, containsTag, getChildren, getParent, getTag, getTagMap, isDefaultField, isLeaf, isRoot, removeFromParent, 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.flexible.core.nodes.QueryNode

add, add, cloneTree, containsTag, getChildren, getParent, getTag, getTagMap, isLeaf, removeFromParent, set, setTag, unsetTag

Constructor Detail

NumericQueryNode

public NumericQueryNode(CharSequence field,
                Number value,
                NumberFormat numberFormat)

Creates a NumericQueryNode object using the given field, Number value and NumberFormat used to convert the value to String.

Parameters:

field - the field associated with this query node

value - the value hold by this node

numberFormat - the NumberFormat used to convert the value to String

Method Detail

getField

public CharSequence getField()

Returns the field associated with this node.

Specified by:

getField in interface FieldableNode

Returns:

the field associated with this node

setField

public void setField(CharSequence fieldName)

Sets the field associated with this node.

Specified by:

setField in interface FieldableNode

Parameters:

fieldName - the field associated with this node

getTermEscaped

protected CharSequence getTermEscaped(EscapeQuerySyntax escaper)

This method is used to get the value converted to String and escaped using the given EscapeQuerySyntax.

Parameters:

escaper - the EscapeQuerySyntax used to escape the value String

Returns:

the value converte to String and escaped

toQueryString

public CharSequence toQueryString(EscapeQuerySyntax escapeSyntaxParser)

Description copied from interface: QueryNode

convert to a query string understood by the query parser

Specified by:

toQueryString in interface QueryNode

setNumberFormat

public void setNumberFormat(NumberFormat format)

Sets the NumberFormat used to convert the value to String.

Parameters:

format - the NumberFormat used to convert the value to String

getNumberFormat

public NumberFormat getNumberFormat()

Returns the NumberFormat used to convert the value to String.

Returns:

the NumberFormat used to convert the value to String

getValue

public Number getValue()

Returns the numeric value as Number.

Specified by:

getValue in interface ValueQueryNode<Number>

Returns:

the numeric value

setValue

public void setValue(Number value)

Sets the numeric value.

Specified by:

setValue in interface ValueQueryNode<Number>

Parameters:

value - the numeric value

toString

public String toString()

Description copied from class: QueryNodeImpl

Every implementation of this class should return pseudo xml like this: For FieldQueryNode: <field start='1' end='2' field='subject' text='foo'/>

Specified by:

toString in interface QueryNode

Overrides:

toString in class QueryNodeImpl

See Also:

QueryNode.toString()