org.apache.openjpa.kernel.exps
Class Exp

java.lang.Object
  org.apache.openjpa.kernel.exps.Exp

All Implemented Interfaces:

Serializable, Expression

Direct Known Subclasses:

AndExpression, BindVariableExpression, CompareExpression, ContainsExpression, InstanceofExpression, IsEmptyExpression, NotExpression, OrExpression, ValExpression, WhenCondition, WhenScalar

public class Exp
extends Object
implements Expression

An in-memory representation of an Expression.

Author:

Abe White

See Also:

Serialized Form

Constructor Summary

Exp()

Method Summary

void	acceptVisit(ExpressionVisitor visitor) Accept a visit from a tree visitor.
protected boolean	eval(Collection candidates, StoreContext ctx, Object[] params) Evaluate the expression for the given group.
protected boolean	eval(Object candidate, Object orig, StoreContext ctx, Object[] params) Evaluate the expression for the given context candidate and original candidate.
boolean	evaluate(Collection candidates, StoreContext ctx, Object[] params) Evaluate the expression for the given candidate group.
boolean	evaluate(Object candidate, Object orig, StoreContext ctx, Object[] params) Evaluate the expression for the given candidate.

Methods inherited from class java.lang.Object

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

Constructor Detail

Exp

public Exp()

Method Detail

evaluate

public final boolean evaluate(Object candidate,
                              Object orig,
                              StoreContext ctx,
                              Object[] params)

Evaluate the expression for the given candidate.

evaluate

public final boolean evaluate(Collection candidates,
                              StoreContext ctx,
                              Object[] params)

Evaluate the expression for the given candidate group.

eval

protected boolean eval(Object candidate,
                       Object orig,
                       StoreContext ctx,
                       Object[] params)

Evaluate the expression for the given context candidate and original candidate.

eval

protected boolean eval(Collection candidates,
                       StoreContext ctx,
                       Object[] params)

Evaluate the expression for the given group.

acceptVisit

public void acceptVisit(ExpressionVisitor visitor)

Description copied from interface: Expression

Accept a visit from a tree visitor.

Specified by:

acceptVisit in interface Expression