net.eusashead.spring.gaecache.Murmur3HashAlgorithm.java Source code

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Here is the source code for net.eusashead.spring.gaecache.Murmur3HashAlgorithm.java

Source

package net.eusashead.spring.gaecache;

/*
 * #[license]
 * spring-cache-gae
 * %%
 * Copyright (C) 2013 Eusa's Head
 * %%
 * 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.
 * %[license]
 */

import java.nio.charset.Charset;

import com.google.common.hash.Hashing;

public class Murmur3HashAlgorithm implements HashAlgorithm {

    /**
     * Returns a string containing each byte 
     * a Murmurhash3 32 bit hash of this string
     * in order, as a two-digit unsigned hexadecimal 
     * number in lower case
     * @param key
     * @return
     */
    public String hash(String key) {
        return Hashing.murmur3_32().hashBytes(key.getBytes(Charset.forName("UTF-8"))).toString();
    }

}