/*
* Copyright 2003-2011 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 jetbrains.mps.cache;
import jetbrains.mps.smodel.NodeReadAccessCasterInEditor;
import jetbrains.mps.smodel.SModelAdapter;
import org.jetbrains.mps.openapi.model.SModel;
import jetbrains.mps.smodel.event.*;
import jetbrains.mps.util.Computable;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
/**
* Igor Alshannikov
* Aug 28, 2007
*/
public abstract class AbstractCache extends SModelAdapter {
private final Object myKey;
private final ConcurrentMap<String, DataSet> myDataSets = new ConcurrentHashMap<String, DataSet>();
protected AbstractCache(Object key) {
super(SModelListenerPriority.PLATFORM);
myKey = key;
}
public Object getKey() {
return myKey;
}
protected void clearCache() {
myDataSets.clear();
}
public boolean isAttached() {
return CachesManager.getInstance().getCache(myKey, null, null) == this;
}
public abstract Set<SModel> getDependsOnModels(Object element);
public void removeDataSet(DataSet dataSet) {
myDataSets.remove(dataSet.getId());
}
protected DataSet getDataSet(final String dataSetId, final DataSetCreator creator) {
DataSet result = myDataSets.get(dataSetId);
if (result != null || creator == null) {
return result;
}
return NodeReadAccessCasterInEditor.runReadTransparentAction(new Computable<DataSet>() {
@Override
public DataSet compute() {
DataSet result = creator.create(AbstractCache.this);
assert result.getId().equals(dataSetId);
result.init();
DataSet existing = myDataSets.putIfAbsent(dataSetId, result);
if (existing != null) {
// ignored, drop dataSet
return existing;
}
return result;
}
});
}
public List<DataSet> getDataSets() {
return new ArrayList<DataSet>(myDataSets.values());
}
// model listener
@Override
public void languageAdded(SModelLanguageEvent event) {
}
@Override
public void languageRemoved(SModelLanguageEvent event) {
}
@Override
public void importAdded(SModelImportEvent event) {
}
@Override
public void importRemoved(SModelImportEvent event) {
}
@Override
public void devkitAdded(SModelDevKitEvent event) {
}
@Override
public void devkitRemoved(SModelDevKitEvent event) {
}
@Override
public void rootAdded(SModelRootEvent event) {
}
@Override
public void rootRemoved(SModelRootEvent event) {
}
@Override
public void beforeRootRemoved(SModelRootEvent event) {
}
@Override
public void propertyChanged(SModelPropertyEvent event) {
}
@Override
public void childAdded(SModelChildEvent event) {
}
@Override
public void childRemoved(SModelChildEvent event) {
}
@Override
public void beforeChildRemoved(SModelChildEvent event) {
}
@Override
public void referenceAdded(SModelReferenceEvent event) {
}
@Override
public void referenceRemoved(SModelReferenceEvent event) {
}
public interface DataSetCreator<T extends AbstractCache> {
DataSet create(T ownerCache);
}
}