这是在netbeans下的一个保存的操作,谁能帮我解释一下啊
@Action(enabledProperty = "saveNeeded")
public Task save() {
return new SaveTask(getApplication());
} private class SaveTask extends Task {
SaveTask(org.jdesktop.application.Application app) {
super(app);
}
@Override protected Void doInBackground() {
try {
entityManager.getTransaction().commit();
entityManager.getTransaction().begin();
} catch (RollbackException rex) {
rex.printStackTrace();
entityManager.getTransaction().begin();
List<desktopapplication2.Town> merged = new ArrayList<desktopapplication2.Town>(list.size());
for (desktopapplication2.Town t : list) {
merged.add(entityManager.merge(t));
}
list.clear();
list.addAll(merged);
}
return null;
}
@Override protected void finished() {
setSaveNeeded(false);
}
}
跪求各位大虾!!!
先谢谢了,越详细越好!!!!
@Action(enabledProperty = "saveNeeded")
public Task save() {
return new SaveTask(getApplication());
} private class SaveTask extends Task {
SaveTask(org.jdesktop.application.Application app) {
super(app);
}
@Override protected Void doInBackground() {
try {
entityManager.getTransaction().commit();
entityManager.getTransaction().begin();
} catch (RollbackException rex) {
rex.printStackTrace();
entityManager.getTransaction().begin();
List<desktopapplication2.Town> merged = new ArrayList<desktopapplication2.Town>(list.size());
for (desktopapplication2.Town t : list) {
merged.add(entityManager.merge(t));
}
list.clear();
list.addAll(merged);
}
return null;
}
@Override protected void finished() {
setSaveNeeded(false);
}
}
跪求各位大虾!!!
先谢谢了,越详细越好!!!!
保存完了,就SetSaveNeeded();
是不是针对编辑器的保存啊
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