将主从实体数据转化为目标主从实体数据

  在客户现场进行技术验证的时候&＃xff0c;客户需要将预定义主从实体的数据复制到正式主从实体中&＃xff0c;并进行持久化将正式数据保存到正式表中。考虑到EOS开发平台中&＃xff0c;可以借助 Hibernate 关联操作&＃xff08;插入、更新&＃xff09;数据集中主从表数据&＃xff0c;只需要解决如何将预定义实体的数据转移到正式实体中。实体关系如下图所示&＃xff1a;

  在EOS中的 com.eos.foundation 构件库中存在com.eos.foundation.data.DataObjectUtil.convertDataObject 方法&＃xff0c;可以将单层的数据进行转换。通过分析&＃xff0c;数据集的定义不能确定如何关联从表的引用&＃xff0c;所以需要明确定义从表的引用名称需要相同&＃xff08;如上图红色方框&＃xff09;。另外&＃xff0c;在数据集定义的时候&＃xff0c;未明确定义 1:1 关系的引用&＃xff0c;所以在这里明确修改 1:1 引用名为 targetHead。

  下面附上代码的简单实现&＃xff1a;

package com.primeton.eos.foundationX;import java.util.List;import com.eos.foundation.ExceptionConstant;
import com.eos.foundation.common.utils.StringUtil;
import com.eos.foundation.data.DataObjectUtil;
import com.eos.system.annotation.Bizlet;
import com.eos.system.exception.EOSRuntimeException;
import com.primeton.data.sdo.impl.TypeReference;
import com.primeton.ext.data.sdo.DataUtil;import commonj.sdo.DataObject;
import commonj.sdo.Property;/*** &＃64;author Flying Rat* &＃64;date 2015-01-13 10:59:42*/
&＃64;Bizlet("数据对象操作扩展")
public class DataObjectUtilX {&＃64;Bizlet("为数据对象指定属性填充数据")public static DataObject setProperty(DataObject dataObject, String key, String value) {if (dataObject &＃61;&＃61; null) {return null;}if (StringUtil.isBlank(key)) {throw new EOSRuntimeException(ExceptionConstant.PARAM_IS_BLANK, new String[] { "key:" &＃43; key });}dataObject.set(key, value);return dataObject;}&＃64;Bizlet("为数据对象指定属性填充数据&＃xff0c;深层填充。")public static DataObject setProperty(DataObject dataObject, String key, Object value, boolean recursion) {if (dataObject &＃61;&＃61; null) {return null;}if (StringUtil.isBlank(key)) {throw new EOSRuntimeException(ExceptionConstant.PARAM_IS_BLANK, new String[] { "key:" &＃43; key });}dataObject.set(key, value);&＃64;SuppressWarnings("unchecked")List list &＃61; dataObject.getInstanceProperties();for (Property prop : list) {if (dataObject.isSet(prop)) {// 如果该属性可配置if (prop.getName().equals(key)) {if (prop.getType().isDataType()) {dataObject.set(key, DataUtil.toSDOValue(prop.getType(), value));} else {dataObject.set(key, value);}} else if (recursion && !prop.getType().isDataType()) {&＃64;SuppressWarnings("unchecked")List subObject &＃61; (List) dataObject.get(prop);for (DataObject o : subObject) {DataObjectUtilX.setProperty(o, key, value, recursion);}}}}return dataObject;}&＃64;Bizlet("将DataObject转化为目标实体类型的DataObject&＃xff0c;深层转化。")public static DataObject convertDataObject(DataObject srcDataObject) {if (srcDataObject &＃61;&＃61; null) {return null;}String targetEntityName &＃61; null;&＃64;SuppressWarnings("unchecked")List list &＃61; srcDataObject.getInstanceProperties();for (Property srcProp : list) {if (srcDataObject.isSet(srcProp)) {// 如果该属性可配置String propertyName &＃61; srcProp.getName();// 获取该属性名if ("targetHead".equals(propertyName)) {targetEntityName &＃61; ((TypeReference) srcProp.getType()).getEntityName();}}}if (StringUtil.isBlank(targetEntityName)) {throw new EOSRuntimeException(ExceptionConstant.PARAM_IS_BLANK, new String[] { "targetEntityName" });}DataObject targetDataObject &＃61; DataObjectUtil.createDataObject(targetEntityName);for (Property srcProp : list) {if (srcDataObject.isSet(srcProp)) {// 如果该属性可配置Object value &＃61; srcDataObject.get(srcProp);// 获取该属性值String propertyName &＃61; srcProp.getName();// 获取该属性名if (srcProp.getType().isDataType()) {Property targetProp &＃61; targetDataObject.getInstanceProperty(propertyName);// 实例化目标对象的该属性if (null !&＃61; targetProp) {// 如果目标对象存在该属性if (targetProp.getType().isDataType()) {targetDataObject.set(propertyName, DataUtil.toSDOValue(targetProp.getType(), value));} else {targetDataObject.set(propertyName, value);}} else if (targetDataObject.getType().isOpen()) {targetDataObject.set(propertyName, value);}} else {String propName &＃61; srcProp.getName();Property targetProp &＃61; targetDataObject.getInstanceProperty(propName);if (null !&＃61; targetProp) {// 如果目标对象存在该属性if (srcProp.isMany()) {DataObject[] d &＃61; DataObjectUtil.convertDataObjects(value, ((TypeReference) targetProp.getType()).getEntityName(), true);targetDataObject.set(propName, d);} else {DataObject d &＃61; DataObjectUtil.convertDataObject((DataObject) value, ((TypeReference) targetProp.getType()).getEntityName(), true);targetDataObject.set(propName, d);}}}}}return targetDataObject;}&＃64;Bizlet("将DataObject转化为目标实体类型的DataObject&＃xff0c;深层转化。")public static DataObject convertDataObject(DataObject srcDataObject, String targetEntityName) {if (srcDataObject &＃61;&＃61; null) {return null;}if (StringUtil.isBlank(targetEntityName)) {throw new EOSRuntimeException(ExceptionConstant.PARAM_IS_BLANK, new String[] { "targetEntityName" });}DataObject targetDataObject &＃61; DataObjectUtil.createDataObject(targetEntityName);&＃64;SuppressWarnings("unchecked")List list &＃61; srcDataObject.getInstanceProperties();for (Property srcProp : list) {if (srcDataObject.isSet(srcProp)) {// 如果该属性可配置Object value &＃61; srcDataObject.get(srcProp);// 获取该属性值String propertyName &＃61; srcProp.getName();// 获取该属性名if (srcProp.getType().isDataType()) {Property targetProp &＃61; targetDataObject.getInstanceProperty(propertyName);// 实例化目标对象的该属性if (null !&＃61; targetProp) {// 如果目标对象存在该属性if (targetProp.getType().isDataType()) {targetDataObject.set(propertyName, DataUtil .toSDOValue(targetProp.getType(), value));} else {targetDataObject.set(propertyName, value);}} else if (targetDataObject.getType().isOpen()) {targetDataObject.set(propertyName, value);}} else {String propName &＃61; srcProp.getName();Property targetProp &＃61; targetDataObject.getInstanceProperty(propName);if (null !&＃61; targetProp) {// 如果目标对象存在该属性if (srcProp.isMany()) {DataObject[] d &＃61; DataObjectUtil.convertDataObjects(value, ((TypeReference) targetProp.getType()).getEntityName(), true);targetDataObject.set(propName, d);} else {DataObject d &＃61; DataObjectUtil.convertDataObject((DataObject) value, ((TypeReference) targetProp.getType()).getEntityName(), true);targetDataObject.set(propName, d);}}}}}return targetDataObject;}
}


  在上面的 DataObjectUtilX 工具类中&＃xff0c;setProperty 方法是为 DataObject 对象赋值&＃xff0c;convertDataObject 方法是 DataObject 数据复制到目标 DataObject 对象中。