001/* 002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Nuxeo - initial API and implementation 018 * 019 */ 020package org.nuxeo.ecm.core.convert.cache; 021 022import java.io.Serializable; 023import java.util.Map; 024 025import org.nuxeo.ecm.core.api.blobholder.BlobHolder; 026 027/** 028 * Simple helper to handle cache key generation. 029 * 030 * @author tiry 031 */ 032public class CacheKeyGenerator { 033 034 // Utility class. 035 private CacheKeyGenerator() { 036 } 037 038 public static String computeKey(String converterName, BlobHolder blobHolder, Map<String, Serializable> parameters) { 039 StringBuilder sb = new StringBuilder(); 040 sb.append(converterName); 041 sb.append(":"); 042 sb.append(blobHolder.getHash()); 043 if (parameters != null) { 044 for (String key : parameters.keySet()) { 045 sb.append(":").append(key); 046 sb.append(":").append(String.valueOf(parameters.get(key))); 047 } 048 } 049 return sb.toString(); 050 } 051 052}