1.在JPA的配置文件中properties中引入監聽器
<property name="hibernate.ejb.event.post-insert" value="com.core.util.PostSaveEventListener" />
<property name="hibernate.ejb.event.post-update" value="com.core.util.PostUpdateEventListiner" />
<property name="hibernate.ejb.event.post-delete" value="com.core.util.PostDeleteEventListener" />
當JPA操作完成后，自動調用PostSaveEventListener,PostUpdateEventListiner,PostDeleteEventListener方法，支持聯合主鍵取主鍵值，不支持外鍵更新，不支持屬性為集合的變化記錄，如需要外鍵更新可根據需要擴展，以下為save、update、delete三個操作類
package com.core.util;
import java.io.Serializable;
import java.lang.reflect.Field;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.hibernate.event.spi.PostInsertEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.unilogi.core.bean.LoginUserInfo;
/** *//**
*
* <p>
* PostSaveEventListener.
* </p>
*
* @author liu_dawei
*/
@SuppressWarnings(
{ "rawtypes", "unchecked", "serial" })
public class PostSaveEventListener extends org.hibernate.ejb.event.EJB3PostInsertEventListener {
private static final Logger logger = LoggerFactory.getLogger(PostSaveEventListener.class);
private static PostSaveEventListener instance = null;
public static PostSaveEventListener getInstance() {
if (null == instance) {
instance = new PostSaveEventListener();
}
return instance;
}
private enum OperationType {
CREATE, UPDATE, DELETE
}
@Override
public void onPostInsert(PostInsertEvent event) {
try {
Connection con = event.getSession().connection();
Map map = getContent(event);
postOperation(con, map, OperationType.CREATE.ordinal());
} catch (Exception e) {
logger.error(e.getMessage());
}
}
/** *//**
* con: dataBase Connection map: result map
* <p>
* </p>
*
* @param con
* @param map
* @param operation
* @throws Exception
*/
public void postOperation(Connection con, Map map, int operation) throws Exception {
try {
String tableName = map.get("tableName") == null ? "" : map.get("tableName").toString();
StringBuffer PKNameBuffer = new StringBuffer();
if (null != map.get("pkName")) {
List pkList = (List) map.get("pkName");
for (int i = 0; i < pkList.size(); i++) {
if (false == PKNameBuffer.toString().equals("")) {
PKNameBuffer.append(",");
}
Map tempMap = (Map) pkList.get(i);
Set tempsets = tempMap.keySet();
Iterator it = tempsets.iterator();
while (it.hasNext()) {
Object obj = it.next();
PKNameBuffer.append(obj.toString()).append("=").append(tempMap.get(obj));
}
}
}
String pkName = PKNameBuffer.toString();
con.setAutoCommit(false);
String sql = "insert into M_Data_Log(PK_Value, Description, Old_Value, New_Value, Operation_Type, Table_Name, User_Id,Update_Time, Data_Log_Id) "
+ "values(?,?,?,?,?,?,?,CURRENT_TIMESTAMP, M_Data_LOG_SEQ.nextval)";
PreparedStatement ps = con.prepareStatement(sql);
ps.setString(1, pkName);
if (operation == OperationType.CREATE.ordinal()) {
ps.setString(2, "save " + tableName);
}
if (operation == OperationType.UPDATE.ordinal()) {
ps.setString(2, "update " + tableName);
}
if (operation == OperationType.DELETE.ordinal()) {
ps.setString(2, "delete " + tableName);
}
ps.setString(3, map.get("previousproperty") == null ? "" : map.get("previousproperty").toString());
ps.setString(4, map.get("afterproperty") == null ? "" : map.get("afterproperty").toString());
ps.setLong(5, operation);
ps.setString(6, tableName);
LoginUserInfo loginUserInfo = SessionInfoManager.getContextInstance(
MessageManager.getInstance().getHttpServletRequest()).getCurrentUser();
ps.setInt(
7,
loginUserInfo == null ? Integer.parseInt("0") : Integer.parseInt(String.valueOf(loginUserInfo
.getUserId())));
ps.execute();
con.commit();
ps.close();
} catch (Exception e) {
if (null != con) {
try {
con.rollback();
} catch (SQLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
throw new Exception(e.getMessage());
} finally {
try {
if (null != con && con.isClosed() == false) {
con.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
public Map getContent(PostInsertEvent event) throws IllegalArgumentException, IllegalAccessException,
InstantiationException, ClassNotFoundException {
Map map = new HashMap();
// get table
Serializable[] serializables = event.getPersister().getPropertySpaces();
map.put("tableName", serializables[0]);
// get PK
String identifierPropertyName = event.getPersister().getIdentifierPropertyName();
Field[] tempFields = event.getEntity().getClass().getDeclaredFields();
for (int i = 0; i < tempFields.length; i++) {
if (tempFields[i].getName().equals(identifierPropertyName)) {
List tempList = new ArrayList();
// if PK is Primitive
if (event.getPersister().getPropertyType(tempFields[i].getName()).isEntityType() == false) {
Map tempMap = new HashMap();
tempFields[i].setAccessible(true);
tempMap.put(tempFields[i].getName(), tempFields[i].get(event.getEntity()));
tempList.add(tempMap);
} else {
Class obj = event.getId().getClass();
Field[] objFields = obj.getDeclaredFields();
for (int j = 0; j < objFields.length; j++) {
if (objFields[j].getName().equals("serialVersionUID")) {
continue;
}
objFields[j].setAccessible(true);
Map tempMap = new HashMap();
tempMap.put(objFields[j].getName(), objFields[j].get(event.getId()));
tempList.add(tempMap);
}
}
map.put("pkName", tempList);
}
}
// get new value
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < event.getState().length; i++) {
if (false == buffer.toString().equals("")) {
buffer.append(",");
}
// if collection or entity
if (event.getPersister().getPropertyType(event.getPersister().getPropertyNames()[i]).isCollectionType()
|| event.getPersister().getPropertyType(event.getPersister().getPropertyNames()[i]).isEntityType()) {
continue;
}
buffer.append(event.getPersister().getPropertyNames()[i]).append("=").append(event.getState()[i]);
}
map.put("afterproperty", buffer.toString());
return map;
}
}
package com.core.util;
import java.io.Serializable;
import java.lang.reflect.Field;
import java.sql.Connection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.hibernate.event.spi.PostUpdateEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/** *//**
*
* <p>
* PostUpdateEventListiner.
* </p>
*
* @author liu_dawei
*/
@SuppressWarnings({ "rawtypes", "unchecked", "serial" })
public class PostUpdateEventListiner extends org.hibernate.ejb.event.EJB3PostUpdateEventListener {
private static final Logger logger = LoggerFactory.getLogger(PostUpdateEventListiner.class);
private enum OperationType {
CREATE, UPDATE, DELETE
}
@Override
public void onPostUpdate(PostUpdateEvent event) {
try {
Connection con = event.getSession().connection();
Map map = getContent(event);
PostSaveEventListener.getInstance().postOperation(con, map, OperationType.UPDATE.ordinal());
} catch (Exception e) {
logger.error(e.getMessage());
}
}
public Map getContent(PostUpdateEvent event) throws IllegalArgumentException, IllegalAccessException,
InstantiationException, ClassNotFoundException {
Map map = new HashMap();
// get table
Serializable[] serializables = event.getPersister().getPropertySpaces();
map.put("tableName", serializables[0]);
// get PK
String identifierPropertyName = event.getPersister().getIdentifierPropertyName();
Field[] tempFields = event.getEntity().getClass().getDeclaredFields();
for (int i = 0; i < tempFields.length; i++) {
if (tempFields[i].getName().equals(identifierPropertyName)) {
List tempList = new ArrayList();
// if PK is Primitive
if (event.getPersister().getPropertyType(tempFields[i].getName()).isEntityType() == false) {
Map tempMap = new HashMap();
tempFields[i].setAccessible(true);
tempMap.put(tempFields[i].getName(), tempFields[i].get(event.getEntity()));
tempList.add(tempMap);
} else {
Class obj = event.getId().getClass();
Field[] objFields = obj.getDeclaredFields();
for (int j = 0; j < objFields.length; j++) {
if (objFields[j].getName().equals("serialVersionUID")) {
continue;
}
objFields[j].setAccessible(true);
Map tempMap = new HashMap();
tempMap.put(objFields[j].getName(), objFields[j].get(event.getId()));
tempList.add(tempMap);
}
}
map.put("pkName", tempList);
}
}
// get change date
StringBuffer oldStateBuffer = new StringBuffer();
StringBuffer newStateBuffer = new StringBuffer();
for (int i = 0; i < event.getState().length; i++) {
// after
Object oldValue = event.getOldState()[i];
// previous
Object newValue = event.getState()[i];
if ((null == oldValue && null != newValue)
|| (null != oldValue && null == newValue)
|| (null != oldValue && null != newValue && false == oldValue.toString()
.equals(newValue.toString()))) {
if ((false == oldStateBuffer.toString().equals(""))) {
oldStateBuffer.append(",");
}
if ((false == newStateBuffer.toString().equals(""))) {
newStateBuffer.append(",");
}
// if collection or entity
if (event.getPersister().getPropertyType(event.getPersister().getPropertyNames()[i]).isCollectionType()
|| event.getPersister().getPropertyType(event.getPersister().getPropertyNames()[i])
.isEntityType()) {
continue;
}
String propertyName = event.getPersister().getPropertyNames()[i];
oldStateBuffer.append(propertyName).append("=").append(oldValue);
newStateBuffer.append(propertyName).append("=").append(newValue);
}
}
map.put("previousproperty", oldStateBuffer.toString());
map.put("afterproperty", newStateBuffer.toString());
return map;
}
}
package com.core.util;
import java.io.Serializable;
import java.lang.reflect.Field;
import java.sql.Connection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.hibernate.ejb.event.EJB3PostDeleteEventListener;
import org.hibernate.event.spi.PostDeleteEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/** *//**
*
* <p>
* PostDeleteEventListener.
* </p>
*
* @author liu_dawei
*/
@SuppressWarnings("serial")
public class PostDeleteEventListener extends EJB3PostDeleteEventListener {
private static final Logger logger = LoggerFactory.getLogger(PostDeleteEventListener.class);
private enum OperationType {
CREATE, UPDATE, DELETE
}
@SuppressWarnings("rawtypes")
@Override
public void onPostDelete(PostDeleteEvent event) {
try {
Connection con = event.getSession().connection();
Map map = getContent(event);
PostSaveEventListener.getInstance().postOperation(con, map, OperationType.DELETE.ordinal());
} catch (Exception e) {
logger.error(e.getMessage());
}
}
@SuppressWarnings({ "rawtypes", "unchecked" })
public Map getContent(PostDeleteEvent event) throws IllegalArgumentException, IllegalAccessException,
InstantiationException, ClassNotFoundException {
Map map = new HashMap();
// get table
Serializable[] serializables = event.getPersister().getPropertySpaces();
map.put("tableName", serializables[0]);
// get PK
String identifierPropertyName = event.getPersister().getIdentifierPropertyName();
Field[] tempFields = event.getEntity().getClass().getDeclaredFields();
for (int i = 0; i < tempFields.length; i++) {
if (tempFields[i].getName().equals(identifierPropertyName)) {
List tempList = new ArrayList();
// if PK is Primitive
if (event.getPersister().getPropertyType(tempFields[i].getName()).isEntityType() == false) {
Map tempMap = new HashMap();
tempFields[i].setAccessible(true);
tempMap.put(tempFields[i].getName(), tempFields[i].get(event.getEntity()));
tempList.add(tempMap);
} else {
Class obj = event.getId().getClass();
Field[] objFields = obj.getDeclaredFields();
for (int j = 0; j < objFields.length; j++) {
if (objFields[j].getName().equals("serialVersionUID")) {
continue;
}
objFields[j].setAccessible(true);
Map tempMap = new HashMap();
tempMap.put(objFields[j].getName(), objFields[j].get(event.getId()));
tempList.add(tempMap);
}
}
map.put("pkName", tempList);
}
}
// get old value
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < event.getDeletedState().length; i++) {
if (false == buffer.toString().equals("")) {
buffer.append(",");
}
// if collection or entity
if (event.getPersister().getPropertyType(event.getPersister().getPropertyNames()[i]).isCollectionType()
|| event.getPersister().getPropertyType(event.getPersister().getPropertyNames()[i]).isEntityType()) {
continue;
}
buffer.append(event.getPersister().getPropertyNames()[i]).append("=").append(event.getDeletedState()[i]);
}
map.put("previousproperty", buffer.toString());
return map;
}
}
posted on 2012-11-01 11:28
孤飛燕 閱讀(5194)
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Hibernate||JPA