/*
* Copyright 2004-2005 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springmodules.validation.bean.conf.loader.annotation.handler;
import java.beans.PropertyDescriptor;
import java.lang.annotation.Annotation;
import org.springframework.util.StringUtils;
import org.springmodules.validation.bean.conf.MutableBeanValidationConfiguration;
import org.springmodules.validation.util.cel.ConditionExpressionBased;
import org.springmodules.validation.util.cel.ConditionExpressionParser;
import org.springmodules.validation.util.cel.valang.ValangConditionExpressionParser;
/**
* A {@link PropertyValidationAnnotationHandler} that handles {@link CascadeValidation} annotations.
*
* @author Uri Boness
*/
public class CascadeValidationAnnotationHandler implements PropertyValidationAnnotationHandler, ConditionExpressionBased {
private ConditionExpressionParser conditionExpressionParser;
/**
* Constructs a new CascadeValidationAnnotationHandler.
*/
public CascadeValidationAnnotationHandler() {
this(new ValangConditionExpressionParser());
}
/**
* Constructs a new CascadeValidationAnnotationHandler with a given condition expression parser to be used
* when evaluating the applicability condition expression.
*/
public CascadeValidationAnnotationHandler(ConditionExpressionParser conditionExpressionParser) {
setConditionExpressionParser(conditionExpressionParser);
}
/**
* @see ConditionExpressionBased#setConditionExpressionParser(org.springmodules.validation.util.cel.ConditionExpressionParser)
*/
public void setConditionExpressionParser(ConditionExpressionParser conditionExpressionParser) {
this.conditionExpressionParser = conditionExpressionParser;
}
/**
* @return <code>true</code> if the annotation is of type <code>{@link CascadeValidation}</code>.
*
* @see PropertyValidationAnnotationHandler#supports(java.lang.annotation.Annotation, Class, java.beans.PropertyDescriptor)
*/
public boolean supports(Annotation annotation, Class clazz, PropertyDescriptor descriptor) {
return CascadeValidation.class.isInstance(annotation);
}
/**
* Registers the annotated property for cascade validation.
*
* @see PropertyValidationAnnotationHandler#handleAnnotation(java.lang.annotation.Annotation, Class, java.beans.PropertyDescriptor, org.springmodules.validation.bean.conf.MutableBeanValidationConfiguration)
*/
public void handleAnnotation(Annotation annotation, Class clazz, PropertyDescriptor descriptor, MutableBeanValidationConfiguration configuration) {
CascadeValidation cascadeValidationAnnotation = (CascadeValidation)annotation;
org.springmodules.validation.bean.conf.CascadeValidation cascadeValidation =
new org.springmodules.validation.bean.conf.CascadeValidation(descriptor.getName());
if (StringUtils.hasText(cascadeValidationAnnotation.value())) {
cascadeValidation.setApplicabilityCondition(conditionExpressionParser.parse(cascadeValidationAnnotation.value()));
}
configuration.addCascadeValidation(cascadeValidation);
}
}