org.apache.flink.runtime.state.gemini.engine.page.bmap.GComparatorBytesImpl Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.flink.runtime.state.gemini.engine.page.bmap;
import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.core.memory.DataInputView;
import java.util.Comparator;
/**
* GComparatorBytesImpl for Gemini, use bytes comparator.
*/
public class GComparatorBytesImpl implements GComparator {
private final Comparator jdkComparator;
private final TypeSerializer typeSerializer;
public GComparatorBytesImpl(Comparator jdkComparator, TypeSerializer typeSerializer) {
this.jdkComparator = jdkComparator;
this.typeSerializer = typeSerializer;
}
@Override
public int compare(BinaryKey left, BinaryKey right) {
return ByteBufferUtils.compareTo(left.getBb(),
left.getKeyOffset(),
left.getKeyLen(),
right.getBb(),
right.getKeyOffset(),
right.getKeyLen());
}
@Override
public int compare(K left, K right) {
return this.jdkComparator.compare(left, right);
}
@Override
public int compare(K left, BinaryKey right) {
try {
DataInputView rightDataInputView = new ByteBufferDataInputView(right.getBb(),
right.getKeyOffset(),
right.getKeyLen());
K rigtK = typeSerializer.deserialize(rightDataInputView);
return this.jdkComparator.compare(left, rigtK);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
public Comparator getJDKCompactor() {
return this.jdkComparator;
}
@Override
public Comparator getJDKBinaryCompactor() {
return GComparatorBytesImpl.this::compare;
}
}