/*
* Copyright 1999-2004 Alibaba.com All right reserved. This software is the confidential and proprietary information of
* Alibaba.com ("Confidential Information"). You shall not disclose such Confidential Information and shall use it only
* in accordance with the terms of the license agreement you entered into with Alibaba.com.
*/
package com.alibaba.tamper.process;
import org.apache.commons.lang.StringUtils;
import com.alibaba.tamper.core.BeanMappingException;
import com.alibaba.tamper.core.config.BeanMappingBehavior;
import com.alibaba.tamper.core.config.BeanMappingField;
import com.alibaba.tamper.core.process.ValueProcess;
import com.alibaba.tamper.core.process.ValueProcessInvocation;
/**
* 处理下Behavior的行为控制, 可参见 {@linkplain BeanMappingBehavior}
*
* @author jianghang 2011-6-22 上午09:50:16
*/
public class BehaviorValueProcess implements ValueProcess {
public Object process(Object value, ValueProcessInvocation invocation) throws BeanMappingException {
BeanMappingField field = invocation.getContext().getCurrentField();
BeanMappingBehavior behavior = field.getBehavior(); // 每个属性mapping都会有一个behavior，允许覆盖上层
// 判断一下value的null 情况
if (value == null && behavior.isMappingNullValue() == false) {
return value;
}
// 进行trim处理
if (value instanceof String && behavior.isTrimStrings()) {
value = StringUtils.trim((String) value);
}
// 判断一下String的null / empty情况
if ((value == null || (value instanceof String && StringUtils.isEmpty((String) value)))
&& behavior.isMappingEmptyStrings() == false) {
return value;
}
return invocation.proceed(value);
}
}