NO.73 [bean]Arch4用业务大对象的复制工具类BizVoUtils

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--引用涉及的司内工具类 ,恕不提供。

 

    两个简单的Bean:属性基本都是基础类型(如int,float)或一些基础类(如 Date,String),除了名字不一样,属性几乎一模一样,值复制你可以用Apache的BeanUtils.copyProperties,也可以用(司内)SuperBeanTools.simpleCopy。

    如果是复杂Bean(含有以List为形式的下级简单Bean),貌似没有太简单明了的工具,因此,有了这个AR工具BizVoUtils。

 

【例】

PolicyDto

保单大对象

 

EndorseDto

批单大对象

 

有子Dto型属性

PrpCmainDto mainDto

String policyNo;

String applyCode;

...

 

PrpPmain mainDto

String endorDto;

String applyCode;

...

有List型属性(注,List命名一般应完全一致)

List insuredList;

--

List中是PrpCinsuredDto

 

 

List insuredList;

--

List中是PrpPinsuredDto

 

 

 

PrpCinsuredDto中有这些属性

String policyNo;

String insuredCode;

String insuredName;

 

 

PrpPinsuredDto中有这些属性

String policyNo;

String insuredCode;

String insuredName;

...

...

...

 

...

...

 

【例子说明】

  1. 两个业务大对象的属性几乎一模一样——除了子Dto名中或的这一点差异:保单是PrpC,批单是PrpP
  2. List属性命名一致(见过不规范者,比如保单大对象中被保险人List命名成prpCinsuredList,批单大对象中命名成prpPinsuredList,也可以改工具中代码以解决,但很麻烦,暂不提供支持,所以没啥事,还是都照规范来吧);

 

【使用说明】

  1. 由于Arch4中底层Dto无基础类型(double,int),只有基础类(Double,Integer),因此本版不支持基础类型;
  2. 字段名除了差异部分,其它字母应完全一致,大小写也要完全一致。如果有某个字段赋值未成功,请检查是否符合这个条件;
  3. 实现公共特殊字段的赋值——比如批单大对象中EndorNo是公共的,但保单大对象中却没有,因此,在从保单大对象向批单大对象赋值时,若没有这个功能,还是得对每个子对象拿出来去单独赋值EndorNo;
  4. 如果目标Dto中已经有部分值,此工具实现了不覆盖,先不多解释。

 

【使用样例】

两个不同业务大对象的拷贝

//比如从保单Dto要生成批单Dto//prpCmainDto是一个已经从数据库或页面组装好的大对象//先创建目录对象prpPmainDtoMap<String, Object> specialFieldMap = new HashMap<String, Object>();specialFieldMap.put("EndorNo", endorNo);//字段名首字母要大写PrpPmainDto prpPmainDto = new PrpPmainDto();BizVoUtils.copyBizObj(prpCmainDto, prpPmainDto ,BizVoUtils.POLICY, BizVoUtils.ENDOR,specialFieldMap);

业务大对象自己的深拷贝

   PrpCmainDto prpCmainDto2 = new PrpCmainDto();   BizDtoUtil.copyBizObj(prpCmainDto,prpCmainDto2);


【源码】 

package com.sinosoft.utility.bean;import java.lang.reflect.Method;import java.math.BigDecimal;import java.util.ArrayList;import java.util.Date;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import com.sinosoft.sysframework.common.util.ObjectUtils;/** * 前身BizDtoUtil *  * @author amosryan 2010-08 *  */public class BizVoUtils extends DtoUtils {/** 是否打印调试信息? */private static boolean verbose = true;/** 项目 */public static final String PROJECT = "PrpSproject";/** 项目批改 */public static final String ENDOR_PROJECT = "PrpSprojectEndor";/** 保单 */public static final String POLICY = "PrpC";/** 批单 */public static final String ENDOR = "PrpP";/** 可直接赋值的类属性类型 */private static Map<Class, String> supportTypeMap = new HashMap<Class, String>();static {supportTypeMap.put(Integer.class, "");supportTypeMap.put(Long.class, "");supportTypeMap.put(Double.class, "");supportTypeMap.put(BigDecimal.class, "");supportTypeMap.put(String.class, "");supportTypeMap.put(Short.class, "");supportTypeMap.put(Date.class, "");supportTypeMap.put(java.sql.Date.class, "");supportTypeMap.put(Boolean.class, "");supportTypeMap.put(byte[].class, "");}/** * 用于大对象自己深拷贝 * @param target 目标业务Dto * @param source 源业务Dto * @param targetBizType 目标业务Dto业务类型 * @param sourceBizType 源业务Dto业务类型 */public static void copyBizObj(Object source, Object target) {  return copyBizObj(source,target,"","",null);}/** * 复制复杂的业务大对象(目标对象某属性有值则跳过) *  * @param source * @param target * @param sourceBizType * @param targetBizType * @param specialFieldsMap *            需要给target传值的特殊域,常用于target比source多出的主键,传格式以map.put("fieldName",fieldValue *            )传值 (注意FieldName首字母大写) */public static void copyBizObj(Object source, Object target,String sourceBizType, String targetBizType,Map<String, Object> specialFieldsMap) {List targetSetMethodList = ObjectUtils.getSetter(target.getClass());List sourceGetMethodList = ObjectUtils.getGetter(source.getClass());Map sourceGetMethodMap = new HashMap();if (specialFieldsMap == null) {specialFieldsMap = new HashMap();}for (Iterator i = sourceGetMethodList.iterator(); i.hasNext();) {Method sourceGetMethod = (Method) i.next();sourceGetMethodMap.put(sourceGetMethod.getName(), sourceGetMethod);}try {for (Iterator i = targetSetMethodList.iterator(); i.hasNext();) {Method targetSetMethod = (Method) i.next();String targetFieldName = targetSetMethod.getName().substring(3);String sourceFieldName = targetFieldName.replaceFirst(targetBizType, sourceBizType);// 如果是List型,则根据源创建目标Dto,放入目标ListMethod sourceGetMethod = (Method) sourceGetMethodMap.get("get"+ sourceFieldName);if (sourceGetMethod != null) {Object sourceValue = sourceGetMethod.invoke(source,new Object[0]);if (sourceValue != null) {String sourceName = getBeanName(sourceValue);String targetName = null;if (sourceValue instanceof List) {// List情况List targetList = (List) DtoUtils.getFieldValue(target, targetFieldName);if (targetList == null) {// 如果原来无值,新建ListtargetList = new ArrayList();targetSetMethod.invoke(target,new Object[] { targetList });}List sourceList = (List) sourceValue;for (int j = 0; j < sourceList.size(); j++) {Object o = sourceList.get(j);Object obj = null;if (j < targetList.size()) {// 如果List此位置有值obj = targetList.get(j);copyBizObj(o, obj, sourceBizType,targetBizType, specialFieldsMap);} else {// 此位置无值就新建String packageName = getPackageName(o);String sourceBeanName = getBeanName(o);targetName = packageName+ sourceBeanName.replaceFirst(sourceBizType,targetBizType);obj = getInstance(targetName, packageName,sourceBeanName);copyBizObj(o, obj, sourceBizType,targetBizType, specialFieldsMap);targetList.add(obj);}}targetName = ArrayList.class.getName();} else if (!supportTypeMap.containsKey(sourceValue.getClass())) {// 业务对象情况Object obj = DtoUtils.getFieldValue(target,targetFieldName);if (obj == null) {String packageName = getPackageName(sourceValue);targetName = packageName+ sourceName.replaceFirst(sourceBizType, targetBizType);if (verbose) {System.out.println();System.out.println(" In unsupport:---");System.out.println(" packageName:"+ packageName);System.out.println(" targetName:"+ targetName);}obj = getInstance(targetName, packageName,sourceName);targetSetMethod.invoke(target,new Object[] { obj });}copyBizObj(sourceValue, obj, sourceBizType,targetBizType, specialFieldsMap);} else {//叶子属性进行值拷贝targetName = sourceValue.getClass().getName();Object obj = DtoUtils.getFieldValue(target,targetFieldName);if (obj == null) {targetSetMethod.invoke(target,new Object[] { sourceValue });}}if (verbose) {System.out.println();System.out.println("Source名称:" + sourceFieldName);System.out.println("Source类型:"+ sourceValue.getClass());System.out.println("target名称:" + targetFieldName);System.out.println("target类型:" + targetName);}}} else if (specialFieldsMap.containsKey(sourceFieldName)) {targetSetMethod.invoke(target,new Object[] { specialFieldsMap.get(sourceFieldName) });if (verbose) {System.out.println();System.out.println(sourceFieldName+ " exists in SpecialFieldMap!");}} else {if (verbose) {System.out.println();System.out.println(sourceFieldName+ " not exists in source!");}}}} catch (Exception e) {e.printStackTrace();}}private static Object getInstance(String targetName, String packageName,String sourceName) throws Exception {Object obj = getInstance(targetName);if (obj == null) {targetName = packageName + sourceName;obj = getInstance(targetName);}return obj;}}