winery/org.eclipse.winery.repository/src/main/java/org/eclipse/winery/repository/resources/_support/collections/withoutid/IdDeterminationWithHashCode.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012-2013 University of Stuttgart.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * and the Apache License 2.0 which both accompany this distribution,
   6  * and are available at http://www.eclipse.org/legal/epl-v10.html
   7  * and http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Contributors:
  10  *     Oliver Kopp - initial API and implementation
  11  *******************************************************************************/
  12 package org.eclipse.winery.repository.resources._support.collections.withoutid;
  13
  14 import org.eclipse.winery.repository.Utils;
  15 import org.eclipse.winery.repository.resources._support.collections.IIdDetermination;
  16
  17 public class IdDeterminationWithHashCode implements IIdDetermination<Object> {
  18
  19         public static final IdDeterminationWithHashCode INSTANCE = new IdDeterminationWithHashCode();
  20
  21
  22         @Override
  23         public String getId(Object entity) {
  24                 // We assume that different Object serializations *always* have different hashCodes
  25                 int hash = Utils.getXMLAsString(entity).hashCode();
  26                 return Integer.toString(hash);
  27         }
  28
  29         /**
  30          * Static wrapper method for functions.tld
  31          */
  32         public static String getIdStatically(Object entity) {
  33                 return IdDeterminationWithHashCode.INSTANCE.getId(entity);
  34         }
  35
  36 }