/*

  * Copyright 2005-2008 The Kuali Foundation

  * 

  * 

  * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php

  * 

  * 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.kuali.rice.kew.engine.node.var.schemes;

 import java.io.IOException;

 import java.io.InputStream;

 import java.net.URL;

 import org.apache.log4j.Logger;

 import org.kuali.rice.kew.engine.RouteContext;

 import org.kuali.rice.kew.engine.node.PropertiesUtil;

 import org.kuali.rice.kew.engine.node.var.Property;

 import org.kuali.rice.kew.engine.node.var.PropertyScheme;

 /**

  * A property scheme that interprets the locator as a URL.

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public class URLScheme implements PropertyScheme {

     private static final Logger LOG = Logger.getLogger(URLScheme.class);

     public String getName() {

         return "url";

     }

     public String getShortName() {

         return "url";

     }

     public Object load(Property property, RouteContext context) {

         LOG.info("Reading url '" + property.locator + "'...");

         InputStream is;

         try {

             is = new URL(property.locator).openStream();

             if (is == null) {

                 throw new RuntimeException("Unable to access URL: " + property.locator);

             }

             return PropertiesUtil.readResource(is);

         } catch (IOException ioe) {

             throw new RuntimeException("Error loading resource: " + property.locator, ioe);

         }

     }

     public String toString() {

         return "[URLScheme]";

     }

 }