package org.apache.maven.shared.jar.identification.hash;

 /*

  * 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.

  */

 import org.apache.maven.shared.jar.JarAnalyzer;

 /**

  * Classes that can calculate various hash signatures for a JAR file to later uniquely identify them.

  */

 public interface JarHashAnalyzer

 {

     /**

      * Compute the hash for the JAR. The hashcode will then be cached in the JAR data class for later use.

      *

      * @param jarAnalyzer the JAR analyzer to use to obtain the entries to hash

      * @return the hash, or null if not able to be computed due to an exception.

      */

     String computeHash( JarAnalyzer jarAnalyzer );

 }