| /* |
| * Copyright 2009-2013 by The Regents of the University of California |
| * 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 from |
| * |
| * 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 edu.uci.ics.hyracks.hdfs.lib; |
| |
| import edu.uci.ics.hyracks.api.dataflow.value.IBinaryHashFunction; |
| import edu.uci.ics.hyracks.api.dataflow.value.IBinaryHashFunctionFactory; |
| |
| public class RawBinaryHashFunctionFactory implements IBinaryHashFunctionFactory { |
| private static final long serialVersionUID = 1L; |
| |
| public static IBinaryHashFunctionFactory INSTANCE = new RawBinaryHashFunctionFactory(); |
| |
| private RawBinaryHashFunctionFactory() { |
| } |
| |
| @Override |
| public IBinaryHashFunction createBinaryHashFunction() { |
| |
| return new IBinaryHashFunction() { |
| @Override |
| public int hash(byte[] bytes, int offset, int length) { |
| int value = 1; |
| int end = offset + length; |
| for (int i = offset; i < end; i++) |
| value = value * 31 + (int) bytes[i]; |
| return value; |
| } |
| }; |
| } |
| |
| } |