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      1 /****************************************************************
      2  * Licensed to the Apache Software Foundation (ASF) under one   *
      3  * or more contributor license agreements.  See the NOTICE file *
      4  * distributed with this work for additional information        *
      5  * regarding copyright ownership.  The ASF licenses this file   *
      6  * to you under the Apache License, Version 2.0 (the            *
      7  * "License"); you may not use this file except in compliance   *
      8  * with the License.  You may obtain a copy of the License at   *
      9  *                                                              *
     10  *   http://www.apache.org/licenses/LICENSE-2.0                 *
     11  *                                                              *
     12  * Unless required by applicable law or agreed to in writing,   *
     13  * software distributed under the License is distributed on an  *
     14  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
     15  * KIND, either express or implied.  See the License for the    *
     16  * specific language governing permissions and limitations      *
     17  * under the License.                                           *
     18  ****************************************************************/
     19 
     20 package org.apache.james.mime4j.util;
     21 
     22 //BEGIN android-changed: Stubbing out logging
     23 import org.apache.james.mime4j.Log;
     24 import org.apache.james.mime4j.LogFactory;
     25 //END android-changed
     26 
     27 /**
     28  *
     29  * @version $Id: TempStorage.java,v 1.2 2004/10/02 12:41:11 ntherning Exp $
     30  */
     31 public abstract class TempStorage {
     32     private static Log log = LogFactory.getLog(TempStorage.class);
     33     private static TempStorage inst = null;
     34 
     35     static {
     36 
     37         String clazz = System.getProperty("org.apache.james.mime4j.tempStorage");
     38         try {
     39 
     40             if (inst != null) {
     41                 inst = (TempStorage) Class.forName(clazz).newInstance();
     42             }
     43 
     44         } catch (Throwable t) {
     45             log.warn("Unable to create or instantiate TempStorage class '"
     46                       + clazz + "' using SimpleTempStorage instead", t);
     47         }
     48 
     49         if (inst == null) {
     50             inst = new SimpleTempStorage();
     51         }
     52     }
     53 
     54     /**
     55      * Gets the root temporary path which should be used to
     56      * create new temporary paths or files.
     57      *
     58      * @return the root temporary path.
     59      */
     60     public abstract TempPath getRootTempPath();
     61 
     62     public static TempStorage getInstance() {
     63         return inst;
     64     }
     65 
     66     public static void setInstance(TempStorage inst) {
     67         if (inst == null) {
     68             throw new NullPointerException("inst");
     69         }
     70         TempStorage.inst = inst;
     71     }
     72 }
     73