org.apache.hudi.org.apache.hadoop.hbase.filter.LongComparator Maven / Gradle / Ivy
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* distributed with this work for additional information
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* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.filter;
import java.nio.ByteBuffer;
import org.apache.hbase.thirdparty.com.google.protobuf.InvalidProtocolBufferException;
import org.apache.yetus.audience.InterfaceAudience;
import org.apache.hadoop.hbase.exceptions.DeserializationException;
import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ComparatorProtos;
import org.apache.hadoop.hbase.util.ByteBufferUtils;
import org.apache.hadoop.hbase.util.Bytes;
/**
* A long comparator which numerical compares against the specified byte array
*/
@InterfaceAudience.Public
@SuppressWarnings("ComparableType") // Should this move to Comparator usage?
public class LongComparator extends ByteArrayComparable {
private long longValue;
public LongComparator(long value) {
super(Bytes.toBytes(value));
this.longValue = value;
}
@Override
public int compareTo(byte[] value, int offset, int length) {
long that = Bytes.toLong(value, offset, length);
return Long.compare(longValue, that);
}
@Override
public int compareTo(ByteBuffer value, int offset, int length) {
long that = ByteBufferUtils.toLong(value, offset);
return Long.compare(longValue, that);
}
/**
* @return The comparator serialized using pb
*/
@Override
public byte [] toByteArray() {
ComparatorProtos.LongComparator.Builder builder =
ComparatorProtos.LongComparator.newBuilder();
builder.setComparable(ProtobufUtil.toByteArrayComparable(this.value));
return builder.build().toByteArray();
}
/**
* @param pbBytes A pb serialized {@link LongComparator} instance
* @return An instance of {@link LongComparator} made from bytes
* @throws org.apache.hadoop.hbase.exceptions.DeserializationException
* @see #toByteArray
*/
public static LongComparator parseFrom(final byte [] pbBytes)
throws DeserializationException {
ComparatorProtos.LongComparator proto;
try {
proto = ComparatorProtos.LongComparator.parseFrom(pbBytes);
} catch (InvalidProtocolBufferException e) {
throw new DeserializationException(e);
}
return new LongComparator(Bytes.toLong(proto.getComparable().getValue().toByteArray()));
}
/**
* @param other
* @return true if and only if the fields of the comparator that are serialized
* are equal to the corresponding fields in other. Used for testing.
*/
boolean areSerializedFieldsEqual(LongComparator other) {
if (other == this) return true;
return super.areSerializedFieldsEqual(other);
}
}