org.apache.openjpa.persistence.query
Class BinaryExpressionPredicate

java.lang.Object
  extended by org.apache.openjpa.persistence.query.AbstractVisitable
      extended by 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)


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