Java 使用Hibernate播放事务
我正在使用带Hibernate的PlayVersion2.2。我正在尝试创建另一个“层”来管理数据库操作,我是否必须将每个事务都包装在这个层中,或者是否有其他更优雅的方法来完成,我必须采取变通办法来访问传递给方法的变量Java 使用Hibernate播放事务,java,hibernate,jpa,playframework,Java,Hibernate,Jpa,Playframework,我正在使用带Hibernate的PlayVersion2.2。我正在尝试创建另一个“层”来管理数据库操作,我是否必须将每个事务都包装在这个层中,或者是否有其他更优雅的方法来完成,我必须采取变通办法来访问传递给方法的变量 JPA.withTransaction(new F.Callback0() { @Override public void invoke() throws Throwable { ... J
JPA.withTransaction(new F.Callback0() {
@Override
public void invoke() throws Throwable {
...
JPA.em().persist(someObject);
...
}
});
使用注释在本例中,我使用aspjectj包装带有自定义注释标记的方法,以应用JPA事务:
- SBT版本=0.13.5
- 播放版本=2.2.1
logLevel := Level.Warn
resolvers += "Typesafe repository" at "http://repo.typesafe.com/typesafe/releases/"
addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.2.1")
// Used to weave Logger calls in Controllers and service
addSbtPlugin("com.typesafe.sbt" % "sbt-aspectj" % "0.9.4")
build.scala
import com.typesafe.sbt.SbtAspectj.AspectjKeys.inputs
import com.typesafe.sbt.SbtAspectj._
import sbt.Keys._
import sbt._
object Build extends Build {
val appName = "Interceptor"
val appVersion = "1.0-SNAPSHOT"
val main = play.Project(appName, appVersion)
.settings(aspectjSettings: _*)
.settings(inputs in Aspectj <+= compiledClasses,
products in Compile <<= products in Aspectj,
products in Runtime <<= products in Compile)
}
交易方面:
package aspects;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import play.db.jpa.JPA;
import play.libs.F;
/**
* @author z.benrhouma
* @since 29/03/2014
*/
@Aspect
public class TransactionAspect {
@Around("execution(* service.*.*(..)) && @annotation(service.STransaction)")
public Object logAccessRules(final ProceedingJoinPoint thisJoinPoint) throws Throwable {
JPA.withTransaction(new F.Callback0() {
@Override
public void invoke() throws Throwable {
thisJoinPoint.proceed();
}
});
return null;
}
}
例如:
package service;
/**
* @author z.benrhouma
* @since 09/09/2014
*/
public class TransactionService {
@STransaction // --> this method will be wrapped with JPA.withTransaction
public static void doSomeProcessing(){
System.out.println("hello with transaction");
}
public static void doSomeProcessing2(){
System.out.println("hello without transaction");
}
}
@事务性只能在操作方法中使用。您可以添加自定义批注处理器并包装事务性代码。
package service;
/**
* @author z.benrhouma
* @since 09/09/2014
*/
public class TransactionService {
@STransaction // --> this method will be wrapped with JPA.withTransaction
public static void doSomeProcessing(){
System.out.println("hello with transaction");
}
public static void doSomeProcessing2(){
System.out.println("hello without transaction");
}
}