| 1 | package org.apache.velocity.runtime.resource.loader; |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2001,2004 The Apache Software Foundation. |
| 5 | * |
| 6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | * you may not use this file except in compliance with the License. |
| 8 | * 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, software |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License. |
| 17 | */ |
| 18 | |
| 19 | import org.apache.velocity.runtime.RuntimeServices; |
| 20 | import org.apache.velocity.util.StringUtils; |
| 21 | |
| 22 | /** |
| 23 | * Factory to grab a template loader. |
| 24 | * |
| 25 | * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a> |
| 26 | * @version $Id: ResourceLoaderFactory.java,v 1.6.8.1 2004/03/03 23:23:02 geirm Exp $ |
| 27 | */ |
| 28 | public class ResourceLoaderFactory |
| 29 | { |
| 30 | /** |
| 31 | * Gets the loader specified in the configuration file. |
| 32 | * @return TemplateLoader |
| 33 | */ |
| 34 | public static ResourceLoader getLoader(RuntimeServices rs, String loaderClassName) |
| 35 | throws Exception |
| 36 | { |
| 37 | ResourceLoader loader = null; |
| 38 | |
| 39 | try |
| 40 | { |
| 41 | loader = ((ResourceLoader)Class.forName(loaderClassName) |
| 42 | .newInstance()); |
| 43 | |
| 44 | rs.info("Resource Loader Instantiated: " + |
| 45 | loader.getClass().getName()); |
| 46 | |
| 47 | return loader; |
| 48 | } |
| 49 | catch( Exception e) |
| 50 | { |
| 51 | rs.error("Problem instantiating the template loader.\n" + |
| 52 | "Look at your properties file and make sure the\n" + |
| 53 | "name of the template loader is correct. Here is the\n" + |
| 54 | "error: " + StringUtils.stackTrace(e)); |
| 55 | |
| 56 | throw new Exception("Problem initializing template loader: " + loaderClassName + |
| 57 | "\nError is: " + StringUtils.stackTrace(e)); |
| 58 | } |
| 59 | } |
| 60 | } |