/*

  * 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 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 loads resources from the class loader.

  *  

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

  */

 public class ResourceScheme implements PropertyScheme {

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

     public String getName() {

         return "resource";

     }

     public String getShortName() {

         return "res";

     }

     public Object load(Property property, RouteContext context) {

         String resource;

         boolean relative = false;

 //        if (property.locator.startsWith("/")) {

             resource = property.locator;

 //        } else {

 //            relative = true;

 //            String prefix;

 //            /* if a resource prefix is set, use it */

 //            if (state.getResourcePrefix() != null) {

 //                prefix = state.getResourcePrefix();

 //            } else {

 //                /* otherwise use the location of the Script class */

 //                prefix = Script.class.getPackage().getName().replace('.', '/');

 //            }

 //            if (!prefix.endsWith("/")) {

 //                prefix += "/"; 

 //            }

 //            resource = prefix + property.locator;

 //        }

         String resStr = property.locator + (relative ? "(" + resource + ")" : "");

         LOG.info("Reading resource " + resStr + "...");

         InputStream is = getClass().getResourceAsStream(resource);

         if (is == null) {

             throw new RuntimeException("Resource not found: " + resStr);

         }

         try {

             return PropertiesUtil.readResource(is);

         } catch (IOException ioe) {

             throw new RuntimeException("Error loading resource: " + resStr, ioe);

         }

     }

     public String toString() {

         return "[ResourceScheme]";

     }

 }