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

Class AbstractRangeQueryNode<T extends FieldValuePairQueryNode<?>>

java.lang.Object

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

org.apache.lucene.queryparser.flexible.standard.nodes.AbstractRangeQueryNode<T>

Type Parameters:

T - the type of the range query bounds (lower and upper)

All Implemented Interfaces:

Cloneable, FieldableNode, QueryNode, RangeQueryNode<FieldValuePairQueryNode<?>>

Direct Known Subclasses:

PointRangeQueryNode, TermRangeQueryNode

public class AbstractRangeQueryNode<T extends FieldValuePairQueryNode<?>>
extends QueryNodeImpl
implements RangeQueryNode<FieldValuePairQueryNode<?>>

This class should be extended by nodes intending to represent range queries.

Field Summary

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

PLAINTEXT_FIELD_NAME, toQueryStringIgnoreFields

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractRangeQueryNode()	Constructs an AbstractRangeQueryNode, it should be invoked only by its extenders.

Method Summary

Modifier and Type	Method	Description
CharSequence	getField()	Returns the field associated with this node.
T	getLowerBound()	Returns the lower bound node.
T	getUpperBound()	Returns the upper bound node.
boolean	isLowerInclusive()	Returns whether the lower bound is inclusive or exclusive.
boolean	isUpperInclusive()	Returns whether the upper bound is inclusive or exclusive.
void	setBounds(T lower, T upper, boolean lowerInclusive, boolean upperInclusive)	Sets the lower and upper bounds.
void	setField(CharSequence fieldName)	Sets the field associated with this node.
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:

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, removeChildren, 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, removeChildren, removeFromParent, set, setTag, unsetTag

Constructor Details

AbstractRangeQueryNode

protected AbstractRangeQueryNode()

Constructs an AbstractRangeQueryNode, it should be invoked only by its extenders.

Method Details

getField

public CharSequence getField()

Returns the field associated with this node.

Specified by:

getField in interface FieldableNode

Returns:

the field associated with this node

See Also:

• FieldableNode

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

getLowerBound

public T getLowerBound()

Returns the lower bound node.

Specified by:

getLowerBound in interface RangeQueryNode<T extends FieldValuePairQueryNode<?>>

Returns:

the lower bound node.

getUpperBound

public T getUpperBound()

Returns the upper bound node.

Specified by:

getUpperBound in interface RangeQueryNode<T extends FieldValuePairQueryNode<?>>

Returns:

the upper bound node.

isLowerInclusive

public boolean isLowerInclusive()

Returns whether the lower bound is inclusive or exclusive.

Specified by:

isLowerInclusive in interface RangeQueryNode<T extends FieldValuePairQueryNode<?>>

Returns:

true if the lower bound is inclusive, otherwise, false

isUpperInclusive

public boolean isUpperInclusive()

Returns whether the upper bound is inclusive or exclusive.

Specified by:

isUpperInclusive in interface RangeQueryNode<T extends FieldValuePairQueryNode<?>>

Returns:

true if the upper bound is inclusive, otherwise, false

setBounds

public void setBounds(T lower,
 T upper,
 boolean lowerInclusive,
 boolean upperInclusive)

Sets the lower and upper bounds.

Parameters:

lower - the lower bound, null if lower bound is open

upper - the upper bound, null if upper bound is open

lowerInclusive - true if the lower bound is inclusive, otherwise, false

upperInclusive - true if the upper bound is inclusive, otherwise, false

See Also:

• getLowerBound()
• getUpperBound()
• isLowerInclusive()
• isUpperInclusive()

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

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()