| /******************************************************************************* |
| * Copyright 2014 Trevor Robinson |
| * |
| * 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.scurrilous.circe.params; |
| |
| import com.scurrilous.circe.HashParameters; |
| |
| /** |
| * Hash parameters for <a |
| * href="https://code.google.com/p/smhasher/wiki/MurmurHash3">MurmurHash3</a>. |
| */ |
| public final class MurmurHash3Parameters implements HashParameters { |
| |
| private final MurmurHash3Variant variant; |
| private final int seed; |
| |
| /** |
| * Constructs a {@link MurmurHash3Parameters} with the given variant and a |
| * seed value of zero. |
| * |
| * @param variant the variant of the algorithm |
| */ |
| public MurmurHash3Parameters(MurmurHash3Variant variant) { |
| this(variant, 0); |
| } |
| |
| /** |
| * Constructs a {@link MurmurHash3Parameters} with the given variant and |
| * seed value. |
| * |
| * @param variant the variant of the algorithm |
| * @param seed the seed value |
| */ |
| public MurmurHash3Parameters(MurmurHash3Variant variant, int seed) { |
| this.variant = variant; |
| this.seed = seed; |
| } |
| |
| /** |
| * Returns the variant of the hash algorithm. |
| * |
| * @return the algorithm variant |
| */ |
| public MurmurHash3Variant variant() { |
| return variant; |
| } |
| |
| /** |
| * Returns the seed value for the hash function. |
| * |
| * @return the seed value |
| */ |
| public int seed() { |
| return seed; |
| } |
| |
| @Override |
| public String algorithm() { |
| return variant.algorithm(); |
| } |
| } |