/*
    * Copyright (C) 2007-2012 Argeo GmbH
    *
    * Licensed 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.argeo.slc.vfs;
  
  import org.apache.commons.vfs2.CacheStrategy;
  import org.apache.commons.vfs2.FileSystemManager;
  import org.apache.commons.vfs2.impl.StandardFileSystemManager;
  import org.springframework.beans.factory.FactoryBean;
  import org.springframework.beans.factory.InitializingBean;
  import org.springframework.core.io.Resource;
  
  public class VfsResourceFactory implements FactoryBean, InitializingBean {
  	private String url;
  	private FileSystemManager fileSystemManager;
  
  	public Object getObject() throws Exception {
  		return new VfsResource(fileSystemManager.resolveFile(url));
  	}
  
  	public Class<?> getObjectType() {
  		return Resource.class;
  	}
  
  	public boolean isSingleton() {
  		return false;
  	}
  
  	public void afterPropertiesSet() throws Exception {
  		if (fileSystemManager == null) {
  			fileSystemManager = new StandardFileSystemManager();
  			((StandardFileSystemManager) fileSystemManager)
  					.setCacheStrategy(CacheStrategy.ON_RESOLVE);
  			((StandardFileSystemManager) fileSystemManager).init();
  		}
  
  	}
  
  }