/*
* Copyright (c) 2002-2012 Alibaba Group Holding Limited.
* All rights reserved.
*
* 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 com.alibaba.citrus.service.form.support;
import static com.alibaba.citrus.util.Assert.*;
import static com.alibaba.citrus.util.CollectionUtil.*;
import java.util.List;
import com.alibaba.citrus.service.form.Validator;
import com.alibaba.citrus.service.form.impl.validation.composite.AllOfValidator;
/**
* 只有一个子validator的组合式validator的基类。
* <p>
* 假如被设入了多个validator，则自动创建一个隐含的all-of-validator。
* </p>
*
* @author Michael Zhou
*/
public abstract class AbstractSimpleCompositeValidator extends AbstractCompositeValidator {
@Override
protected void init() throws Exception {
super.init();
List<Validator> validators = getValidators();
assertTrue(!validators.isEmpty(), "no validators");
if (validators.size() > 1) {
AllOfValidator all = new AllOfValidator();
all.setValidators(validators);
try {
all.afterPropertiesSet();
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
validators = createArrayList((Validator) all);
setValidators(validators);
}
}
/** 取得唯一的validator。 */
public Validator getValidator() {
assertInitialized();
return getValidators().get(0);
}
/** 用子validator验证，并取得其错误信息。 */
protected final boolean doValidate(Context context) {
Validator validator = getValidator();
Context newContext = newContext(context, validator);
if (!validator.validate(newContext)) {
context.setMessage(validator.getMessage(newContext));
return false;
}
return true;
}
}