| /* |
| * 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.lucene.codecs.bloom; |
| import org.apache.lucene.util.BytesRef; |
| |
| |
| /** |
| * Base class for hashing functions that can be referred to by name. |
| * Subclasses are expected to provide threadsafe implementations of the hash function |
| * on the range of bytes referenced in the provided {@link BytesRef} |
| * @lucene.experimental |
| */ |
| public abstract class HashFunction { |
| |
| /** |
| * Hashes the contents of the referenced bytes |
| * @param bytes the data to be hashed |
| * @return the hash of the bytes referenced by bytes.offset and length bytes.length |
| */ |
| public abstract int hash(BytesRef bytes); |
| |
| } |