/*
    * 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.
   */
  
  package org.apache.commons.jci.stores;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  
  /**
   * Store just in memory
   * 
   * @author tcurdt
   */
  public final class MemoryResourceStore implements ResourceStore {
  
      private final Log log = LogFactory.getLog(MemoryResourceStore.class);
  
      private final Map<String, byte[]> store = new HashMap<String, byte[]>();
  
      public byte[] read( final String pResourceName ) {
          log.debug("reading resource " + pResourceName);
          return store.get(pResourceName);
      }
  
      public void write( final String pResourceName, final byte[] pData ) {
          log.debug("writing resource " + pResourceName + "(" + pData.length + ")");
          store.put(pResourceName, pData);
      }
  
      public void remove( final String pResourceName ) {
          log.debug("removing resource " + pResourceName);
          store.remove(pResourceName);
      }
  
      /**
       * @deprecated
       */
      @Deprecated
      public String[] list() {
          if (store == null) {
              return new String[0];
          }
          final List<String> names = new ArrayList<String>();
          
          for (String name : store.keySet()) {
              names.add(name);
          }
  
          return names.toArray(new String[store.size()]);
      }
      
      @Override
      public String toString() {
          return this.getClass().getName() + store.toString();
      }
  }