/*
* 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.StorageException;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
public class CollectionInputDataDiffBuilder<Key, Value> extends InputDataDiffBuilder<Key,Value> {
private final Collection<Key> mySeq;
public CollectionInputDataDiffBuilder(int inputId, @Nullable Collection<Key> seq) {
super(inputId);
mySeq = seq == null ? Collections.<Key>emptySet() : seq;
}
@Override
public void differentiate(@NotNull Map<Key, Value> newData,
@NotNull KeyValueUpdateProcessor<Key, Value> addProcessor,
@NotNull KeyValueUpdateProcessor<Key, Value> updateProcessor,
@NotNull RemovedKeyProcessor<Key> removeProcessor) throws StorageException {
differentiateWithKeySeq(mySeq, newData, myInputId, addProcessor, removeProcessor);
}
public Collection<Key> getSeq() {
return mySeq;
}
static <Key, Value> void differentiateWithKeySeq(@NotNull Collection<Key> currentData,
@NotNull Map<Key, Value> newData,
int inputId,
@NotNull KeyValueUpdateProcessor<Key, Value> addProcessor,
@NotNull RemovedKeyProcessor<Key> removeProcessor) throws StorageException {
for (Key key : currentData) {
removeProcessor.process(key, inputId);
}
EmptyInputDataDiffBuilder.processKeys(newData, addProcessor, inputId);
}
}