| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. 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. For additional information regarding |
| * copyright in this work, please see the NOTICE file in the top level |
| * directory of this distribution. |
| */ |
| |
| package org.apache.roller.weblogger.ui.rendering.model; |
| |
| import java.util.Map; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.roller.weblogger.WebloggerException; |
| import org.apache.roller.weblogger.util.Utilities; |
| |
| |
| /** |
| * Helps with model loading process. |
| */ |
| public class ModelLoader { |
| |
| private static Log log = LogFactory.getLog(ModelLoader.class); |
| |
| /** |
| * Convenience method to load a comma-separated list of page models. |
| * |
| * Optionally fails if any exceptions are thrown when initializing |
| * the Model instances. |
| */ |
| public static void loadModels(String modelsString, Map<String, Object> modelMap, |
| Map initData, boolean fail) |
| throws WebloggerException { |
| |
| String[] models = Utilities.stringToStringArray(modelsString, ","); |
| if (models != null) { |
| for (String model : models) { |
| try { |
| Class modelClass = Class.forName(model); |
| Model pageModel = (Model) modelClass.newInstance(); |
| pageModel.init(initData); |
| modelMap.put(pageModel.getModelName(), pageModel); |
| } catch (WebloggerException re) { |
| if(fail) { |
| throw re; |
| } else { |
| log.warn("Error initializing model: " + model); |
| } |
| } catch (ClassNotFoundException cnfe) { |
| if(fail) { |
| throw new WebloggerException("Error finding model: " + model, cnfe); |
| } else { |
| log.warn("Error finding model: " + model); |
| } |
| } catch (InstantiationException ie) { |
| if(fail) { |
| throw new WebloggerException("Error instantiating model: " + model, ie); |
| } else { |
| log.warn("Error instantiating model: " + model); |
| } |
| } catch (IllegalAccessException iae) { |
| if(fail) { |
| throw new WebloggerException("Error accessing model: " + model, iae); |
| } else { |
| log.warn("Error accessing model: " + model); |
| } |
| } |
| } |
| } |
| } |
| |
| } |