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Google app engine 无法更新现有JDO对象并保留新更新的数据_Google App Engine_Jdo_Datapersistance - Fatal编程技术网

Google app engine 无法更新现有JDO对象并保留新更新的数据

Google app engine 无法更新现有JDO对象并保留新更新的数据,google-app-engine,jdo,datapersistance,Google App Engine,Jdo,Datapersistance,我一直在尝试从多个线程的解决方案,但还没有运气 任何人都可以通过代码快速地了解到正在发生的事情?我在下面分享了我的更新代码。感谢您的快速帮助 @ApiMethod(name="updateContact", path = "updateContact", httpMethod = "GET") public OpinionModel updateEmployeeTitle(@Named("id") Long id,@Named("selectedOpinionIndex") int opinio

我一直在尝试从多个线程的解决方案,但还没有运气

任何人都可以通过代码快速地了解到正在发生的事情?我在下面分享了我的更新代码。感谢您的快速帮助

@ApiMethod(name="updateContact", path = "updateContact", httpMethod = "GET")
public OpinionModel updateEmployeeTitle(@Named("id") Long id,@Named("selectedOpinionIndex") int opinionIndex) {

    PersistenceManager pm = PMF.get().getPersistenceManager();
    javax.jdo.Transaction tx =  pm.currentTransaction();
    pm.currentTransaction().begin(); // <-------

    OpinionModel e;

    try {
        e = pm.getObjectById(OpinionModel.class,id);

        if (opinionIndex == 1) {
            int foo = Integer.parseInt(e.opinion1ResultCount);
            foo++;
            e.opinion1ResultCount = Integer.toString(foo);
            JDOHelper.makeDirty(e, e.opinion1ResultCount);

        }else if (opinionIndex == 2) {

            int foo = Integer.parseInt(e.opinion2ResultCount);
            foo++;
            e.opinion2ResultCount = Integer.toString(foo);
            JDOHelper.makeDirty(e, e.opinion2ResultCount);

        }
        else if (opinionIndex == 3) {

            int foo = Integer.parseInt(e.opinion3ResultCount);
            foo++;
            e.opinion3ResultCount = Integer.toString(foo);
            JDOHelper.makeDirty(e, e.opinion3ResultCount);

        }
        else if (opinionIndex == 4) {

            int foo = Integer.parseInt(e.opinion4ResultCount);
            foo++;
            e.opinion4ResultCount = Integer.toString(foo);
            JDOHelper.makeDirty(e, e.opinion4ResultCount);
        }
        else {
            System.out.println("Invalid selection");
        }

        pm.currentTransaction().commit(); // <-------
        pm.makePersistent(e);

    } finally {

        if (tx.isActive())
        {
            // Error occurred so rollback the transaction
            tx.rollback();
        }

        pm.close();
    }

    ApiResponse resp = new ApiResponse();
    resp.responsecode = "SUCCESS";
    resp.responseMessage = "Contact Updated ";

    return e;
}
@ApiMethod(name=“updateContact”,path=“updateContact”,httpMethod=“GET”)
public OpinionModel updateEmployeeTitle(@Named(“id”)长id,@Named(“SelectedOpininIndex”)int opinionIndex){
PersistenceManager pm=PMF.get().getPersistenceManager();
javax.jdo.Transaction tx=pm.currentTransaction();

pm.currentTransaction().begin();//更新公共字段?这是什么世纪?使用setter来更新字段。当你这样做时,你没有参考日志上说的内容,我们必须猜测吗?@NeilStockton,现在是2014年。只有老古董才使用setter。正是这些人让java看起来很糟糕。