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/**
 * Copyright (C) 2016 - 2030 youtongluan.
 *
 * 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.yx.validate;

import org.yx.annotation.Bean;
import org.yx.annotation.Param;
import org.yx.exception.InvalidParamException;

@Bean
public class MaxLengthValidator implements Validator {

	@Override
	public void valid(ParamInfo info, Object arg) throws InvalidParamException {
		Param param = info.param;
		if (param.maxLength() < 0) {
			return;
		}
		if (!String.class.isInstance(arg)) {
			return;
		}
		if (((String) arg).length() > param.maxLength()) {
			throw new InvalidParamException("#长度超过" + param.maxLength(), info, arg);
		}

	}

}