/*
* Copyright 2000-2007 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.pom.impl;
import com.intellij.pom.PomModelAspect;
import com.intellij.pom.PomTransaction;
import com.intellij.pom.event.PomModelEvent;
import com.intellij.psi.PsiElement;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.Nullable;
public abstract class PomTransactionBase implements PomTransaction{
private PsiElement myScope;
private PomModelAspect myAspect;
private PomModelEvent myAccumulatedEvent;
public PomTransactionBase(PsiElement scope, final PomModelAspect aspect){
myScope = scope;
myAspect = aspect;
myAccumulatedEvent = new PomModelEvent(scope.getManager().getProject().getModel());
}
public PomModelEvent getAccumulatedEvent() {
return myAccumulatedEvent;
}
public void run() throws IncorrectOperationException {
// override accumulated event because transaction should construct full model event in its aspect
final PomModelEvent event = runInner();
if(event == null){
// in case of null event aspect change set supposed to be rebuild by low level events
myAccumulatedEvent.registerChangeSet(myAspect, null);
return;
}
for (PomModelAspect aspect : event.getChangedAspects()) {
myAccumulatedEvent.merge(event);
}
}
@Nullable
public abstract PomModelEvent runInner() throws IncorrectOperationException;
public PsiElement getChangeScope() {
return myScope;
}
public PomModelAspect getTransactionAspect() {
return myAspect;
}
}