org.springframework.validation.DirectFieldBindingResult Maven / Gradle / Ivy
/*
* Copyright 2002-2006 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.springframework.validation;
import org.springframework.beans.ConfigurablePropertyAccessor;
import org.springframework.beans.DirectFieldAccessor;
import org.springframework.util.Assert;
/**
* Special implementation of the Errors and BindingResult interfaces,
* supporting registration and evaluation of binding errors on value objects.
* Performs direct field access instead of going through JavaBean getters.
*
* This implementation just supports fields in the actual target object.
* It is not able to traverse nested fields.
*
* @author Juergen Hoeller
* @since 2.0
* @see DataBinder#getBindingResult()
* @see DataBinder#initDirectFieldAccess()
* @see BeanPropertyBindingResult
*/
public class DirectFieldBindingResult extends AbstractPropertyBindingResult {
private final Object target;
private transient DirectFieldAccessor directFieldAccessor;
/**
* Create a new DirectFieldBindingResult instance.
* @param target the target object to bind onto
* @param objectName the name of the target object
*/
public DirectFieldBindingResult(Object target, String objectName) {
super(objectName);
Assert.notNull(target, "Target bean must not be null");
this.target = target;
}
public final Object getTarget() {
return target;
}
/**
* Returns the DirectFieldAccessor that this instance uses.
* Creates a new one if none existed before.
* @see #createDirectFieldAccessor()
*/
public final ConfigurablePropertyAccessor getPropertyAccessor() {
if (this.directFieldAccessor == null) {
this.directFieldAccessor = createDirectFieldAccessor();
}
return this.directFieldAccessor;
}
/**
* Create a new DirectFieldAccessor for the underlying target object.
* @see #getTarget()
*/
protected DirectFieldAccessor createDirectFieldAccessor() {
return new DirectFieldAccessor(getTarget());
}
}