| /* 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.codehaus.groovy.grails.orm.hibernate.metaclass; |
| |
| |
| |
| import groovy.lang.GroovyObject; |
| |
| import java.beans.IntrospectionException; |
| import java.util.List; |
| |
| import org.codehaus.groovy.grails.commons.GrailsApplication; |
| import org.codehaus.groovy.grails.commons.metaclass.DefaultGroovyDynamicMethodsInterceptor; |
| import org.codehaus.groovy.grails.commons.metaclass.DynamicMethods; |
| import org.codehaus.groovy.grails.commons.metaclass.GenericDynamicProperty; |
| import org.codehaus.groovy.grails.exceptions.GrailsDomainException; |
| import org.hibernate.SessionFactory; |
| import org.springframework.validation.BindException; |
| import org.springframework.validation.Errors; |
| import org.springframework.validation.Validator; |
| /** |
| * A method that validates an instance of a domain class against its constraints |
| * |
| * @author Graeme Rocher |
| * @since 07-Nov-2005 |
| */ |
| public class ValidatePersistentMethod extends AbstractDynamicPersistentMethod { |
| |
| private static final String METHOD_NAME = "validate"; |
| private static final String HAS_ERRORS_PROPERTY = "hasErrors"; |
| private static final String ERRORS_PROPERTY = "errors"; |
| private GrailsApplication application; |
| |
| |
| |
| |
| public ValidatePersistentMethod(SessionFactory sessionFactory, ClassLoader classLoader, GrailsApplication application) { |
| super(METHOD_NAME, sessionFactory, classLoader); |
| if(application == null) |
| throw new IllegalArgumentException("Constructor argument 'application' cannot be null"); |
| this.application = application; |
| } |
| |
| protected Object doInvokeInternal(Object target, Object[] arguments) { |
| Errors errors = new BindException(target, target.getClass().getName()); |
| Validator validator = application.getGrailsDomainClass( target.getClass().getName() ).getValidator(); |
| |
| Boolean valid = new Boolean(true); |
| if(validator != null) { |
| validator.validate(target,errors); |
| |
| if(errors.hasErrors()) { |
| valid = new Boolean(!errors.hasErrors()); |
| GenericDynamicProperty hasErrorsProperty = new GenericDynamicProperty(HAS_ERRORS_PROPERTY,Boolean.class,valid,true); |
| GenericDynamicProperty errorsProperty = new GenericDynamicProperty(ERRORS_PROPERTY,List.class,errors.getAllErrors(),true); |
| |
| DynamicMethods interceptor; |
| try { |
| interceptor = new DefaultGroovyDynamicMethodsInterceptor((GroovyObject)target); |
| interceptor.addDynamicProperty(hasErrorsProperty); |
| interceptor.addDynamicProperty( errorsProperty ); |
| } catch (IntrospectionException e) { |
| throw new GrailsDomainException("Introspection exception validating object ["+target+"] or class ["+target.getClass()+"]: " + e.getMessage(),e); |
| } |
| } |
| } |
| return valid; |
| } |
| |
| } |