org.springframework.rules.constraint.property
Class ParameterizedPropertyConstraint

java.lang.Object
  org.springframework.rules.constraint.property.ParameterizedPropertyConstraint

All Implemented Interfaces:

Constraint, PropertyConstraint

public class ParameterizedPropertyConstraint
extends Object
implements PropertyConstraint

A constraint that returns the result of a boolean expression that tests a variable bean property value against a constant parameter value. For example: pet.age > 5

Author:

Keith Donald

Constructor Summary

ParameterizedPropertyConstraint(String propertyName, BinaryConstraint expression, Object parameter)
Creates a BeanPropertyExpressionTester.

ParameterizedPropertyConstraint(String propertyName, Constraint parameterizedExpression)

Method Summary

BinaryConstraint	getConstraint()
Object	getParameter()
String	getPropertyName() Returns the constrained property name.
boolean	isCompoundRule() Does this property constraint effect more than one property?
boolean	isDependentOn(String propertyName) Returns true if this property constraint is dependent on the provided propertyName for test evaluation; that is, it should be retested when propertyName changes.
boolean	test(Object bean) Tests the value of the configured propertyName for this bean against the configured parameter value using the configured binary predicate.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ParameterizedPropertyConstraint

public ParameterizedPropertyConstraint(String propertyName,
                                       BinaryConstraint expression,
                                       Object parameter)

Creates a BeanPropertyExpressionTester.

Parameters:

propertyName - The property participating in the expression.

expression - The expression predicate (tester).

parameter - The constant parameter value participating in the expression.

ParameterizedPropertyConstraint

public ParameterizedPropertyConstraint(String propertyName,
                                       Constraint parameterizedExpression)

Method Detail

getPropertyName

public String getPropertyName()

Description copied from interface: PropertyConstraint

Returns the constrained property name.

Specified by:

getPropertyName in interface PropertyConstraint

Returns:

The property name

isDependentOn

public boolean isDependentOn(String propertyName)

Description copied from interface: PropertyConstraint

Returns true if this property constraint is dependent on the provided propertyName for test evaluation; that is, it should be retested when propertyName changes.

Specified by:

isDependentOn in interface PropertyConstraint

Returns:

true or false

isCompoundRule

public boolean isCompoundRule()

Description copied from interface: PropertyConstraint

Does this property constraint effect more than one property?

Specified by:

isCompoundRule in interface PropertyConstraint

Returns:

true if yes, false otherwise

getConstraint

public BinaryConstraint getConstraint()

getParameter

public Object getParameter()

test

public boolean test(Object bean)

Tests the value of the configured propertyName for this bean against the configured parameter value using the configured binary predicate.

Specified by:

test in interface Constraint

Parameters:

bean - the argument value

Returns:

true if the condition was satisfied, false otherwise

See Also:

Constraint.test(java.lang.Object)

toString

public String toString()

Overrides:

toString in class Object