org.araneaframework.backend.list.memorybased.compexpr
Class LazyComparatorExpression

java.lang.Object
  org.araneaframework.backend.list.memorybased.compexpr.LazyComparatorExpression

All Implemented Interfaces:

ComparatorExpression, Serializable

public class LazyComparatorExpression

extends Object

implements ComparatorExpression

ComparatorExpression that is initialized lazily.

Since:

1.1

Author:

Rein Raudjärv

See Also:

Serialized Form

Constructor Summary

LazyComparatorExpression(ComparatorExpressionFactory factory)

Method Summary

int	compare(VariableResolver resolver1, VariableResolver resolver2) Returns a negative integer, zero, or a positive integer as the first Variable is less than, equal to, or greater than the second.
ComparatorExpression	getComparatorExpression()
ComparatorExpressionFactory	getFactory()

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyComparatorExpression

public LazyComparatorExpression(ComparatorExpressionFactory factory)

Method Detail

getFactory

public ComparatorExpressionFactory getFactory()

getComparatorExpression

public ComparatorExpression getComparatorExpression()

compare

public int compare(VariableResolver resolver1,
                   VariableResolver resolver2)
            throws ExpressionEvaluationException

Description copied from interface: ComparatorExpression

Returns a negative integer, zero, or a positive integer as the first Variable is less than, equal to, or greater than the second.

Specified by:

compare in interface ComparatorExpression

Parameters:

resolver1 - Resolver that is used to evalute the first Variable.

resolver2 - Resolver that is used to evalute the second Variable.

Returns:

a negative integer, zero, or a positive integer as the first Variable is less than, equal to, or greater than the second.

Throws:

ExpressionEvaluationException - when the comparation fails.