org.apache.openjpa.persistence.query
Class BinaryExpressionPredicate

java.lang.Object
  org.apache.openjpa.persistence.query.AbstractVisitable
      org.apache.openjpa.persistence.query.BinaryExpressionPredicate

All Implemented Interfaces:

Serializable, Predicate, Visitable

Direct Known Subclasses:

BetweenExpression, EqualExpression, GreaterEqualExpression, GreaterThanExpression, InExpression, LessEqualExpression, LessThanExpression, LikeExpression, MemberOfExpression, NotEqualExpression

 class BinaryExpressionPredicate
extends AbstractVisitable
implements Predicate, Visitable

Binary predicate combines two expressions with an operator.

Author:

Pinaki Poddar

Field Summary

protected Expression	_e1
protected Expression	_e2
protected BinaryConditionalOperator	_op

Fields inherited from class org.apache.openjpa.persistence.query.AbstractVisitable

CLOSE_BRACE, COMMA, EMPTY, OPEN_BRACE

Constructor Summary

BinaryExpressionPredicate(Expression e1, BinaryConditionalOperator op, BinaryConditionalOperator nop, Expression e2)

Method Summary

Predicate	and(Predicate predicate) Creates an AND of the predicate with the argument.
String	asExpression(AliasContext ctx) Get a JPQL fragment as used in WHERE clause.
(package private) String	asExpression(Visitable v, AliasContext ctx)
Expression	getOperand()
Expression	getOperand2()
BinaryConditionalOperator	getOperator()
Predicate	not() Creates a negation of the predicate with the argument.
Predicate	or(Predicate predicate) Creates an OR of the predicate with the argument.

Methods inherited from class org.apache.openjpa.persistence.query.AbstractVisitable

asJoinable, asProjection, getAliasHint

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.openjpa.persistence.query.Visitable

asJoinable, asProjection, getAliasHint

Field Detail

_e1

protected final Expression _e1

_e2

protected final Expression _e2

_op

protected final BinaryConditionalOperator _op

Constructor Detail

BinaryExpressionPredicate

BinaryExpressionPredicate(Expression e1,
                          BinaryConditionalOperator op,
                          BinaryConditionalOperator nop,
                          Expression e2)

Method Detail

getOperand

public final Expression getOperand()

getOperand2

public final Expression getOperand2()

getOperator

public final BinaryConditionalOperator getOperator()

and

public Predicate and(Predicate predicate)

Description copied from interface: Predicate

Creates an AND of the predicate with the argument.

Specified by:

and in interface Predicate

Parameters:

predicate - - A simple or compound predicate

Returns:

the predicate that is the AND of the original simple or compound predicate and the argument.

or

public Predicate or(Predicate predicate)

Description copied from interface: Predicate

Creates an OR of the predicate with the argument.

Specified by:

or in interface Predicate

Parameters:

predicate - - A simple or compound predicate

Returns:

the predicate that is the OR of the original simple or compound predicate and the argument.

not

public Predicate not()

Description copied from interface: Predicate

Creates a negation of the predicate with the argument.

Specified by:

not in interface Predicate

Returns:

the predicate that is the negation of the original simple or compound predicate.

asExpression

public String asExpression(AliasContext ctx)

Description copied from interface: Visitable

Get a JPQL fragment as used in WHERE clause.

Specified by:

asExpression in interface Visitable

Overrides:

asExpression in class AbstractVisitable

asExpression

String asExpression(Visitable v,
                    AliasContext ctx)