/*
* Copyright 2000-2016 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.util.indexing.impl;
import com.intellij.util.indexing.IndexExtension;
import com.intellij.util.io.IOUtil;
import com.intellij.util.io.PersistentHashMap;
import org.jetbrains.annotations.NotNull;
import java.io.File;
import java.io.IOException;
import java.util.Collection;
import java.util.Map;
public abstract class MapBasedForwardIndex<Key, Value> extends AbstractForwardIndex<Key,Value> {
@NotNull
private volatile PersistentHashMap<Integer, Collection<Key>> myInputsIndex;
protected MapBasedForwardIndex(IndexExtension<Key, Value, ?> indexExtension) throws IOException {
super(indexExtension);
myInputsIndex = createMap();
}
@NotNull
public abstract PersistentHashMap<Integer, Collection<Key>> createMap() throws IOException;
@NotNull
@Override
public InputDataDiffBuilder<Key, Value> getDiffBuilder(final int inputId) throws IOException {
return new CollectionInputDataDiffBuilder<Key, Value>(inputId, myInputsIndex.get(inputId));
}
@NotNull
public PersistentHashMap<Integer, Collection<Key>> getInputsIndex() {
return myInputsIndex;
}
@Override
public void putInputData(int inputId, @NotNull Map<Key, Value> data) throws IOException {
putData(inputId, data.keySet());
}
public void putData(int inputId, Collection<Key> keyCollection) throws IOException {
if (keyCollection.size() > 0) {
myInputsIndex.put(inputId, keyCollection);
}
else {
myInputsIndex.remove(inputId);
}
}
@Override
public void flush() {
if (myInputsIndex.isDirty()) {
myInputsIndex.force();
}
}
@Override
public void close() throws IOException {
myInputsIndex.close();
}
@Override
public void clear() throws IOException {
final File baseFile = myInputsIndex.getBaseFile();
try {
myInputsIndex.close();
}
catch (Throwable ignored) {
}
if (baseFile != null) {
IOUtil.deleteAllFilesStartingWith(baseFile);
}
myInputsIndex = createMap();
}
}