| package org.apache.turbine.services.template; |
| |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. 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. |
| */ |
| |
| |
| import java.util.Hashtable; |
| |
| import org.apache.commons.configuration2.Configuration; |
| import org.apache.turbine.services.TurbineBaseService; |
| import org.apache.turbine.services.TurbineServices; |
| |
| /** |
| * The base implementation of Turbine {@link |
| * org.apache.turbine.services.template.TemplateEngineService}. |
| * |
| * @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a> |
| * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a> |
| * @version $Id$ |
| */ |
| public abstract class BaseTemplateEngineService |
| extends TurbineBaseService |
| implements TemplateEngineService |
| { |
| /** |
| * A Map containing the configuration for the template |
| * engine service. The configuration contains: |
| * |
| * 1) template extensions |
| * 2) default page |
| * 3) default screen |
| * 4) default layout |
| * 5) default navigation |
| * 6) default error screen |
| */ |
| private final Hashtable<String, Object> configuration = new Hashtable<>(); |
| |
| /** |
| * @see org.apache.turbine.services.template.TemplateEngineService#registerConfiguration |
| */ |
| @Override |
| public void registerConfiguration(String defaultExt) |
| { |
| initConfiguration(defaultExt); |
| TemplateService templateService = (TemplateService)TurbineServices.getInstance().getService(TemplateService.SERVICE_NAME); |
| templateService.registerTemplateEngineService(this); |
| } |
| |
| /** |
| * @see org.apache.turbine.services.template.TemplateEngineService#getTemplateEngineServiceConfiguration |
| */ |
| @Override |
| public Hashtable<String, Object> getTemplateEngineServiceConfiguration() |
| { |
| return configuration; |
| } |
| |
| /** |
| * @see org.apache.turbine.services.template.TemplateEngineService#getAssociatedFileExtensions |
| */ |
| @Override |
| public String[] getAssociatedFileExtensions() |
| { |
| return (String[]) configuration.get(TEMPLATE_EXTENSIONS); |
| } |
| |
| /** |
| * Initialize the Template Engine Service. |
| * |
| * Note engine file extension associations. First attempts to |
| * pull a list of custom extensions from the property file value |
| * keyed by <code>template.extension</code>. If none are defined, |
| * uses the value keyed by |
| * <code>template.default.extension</code>, defaulting to the |
| * emergency value supplied by <code>defaultExt</code>. |
| * |
| * @param defaultExt The default used when the default defined in the |
| * properties file is missing or misconfigured. |
| */ |
| protected void initConfiguration(String defaultExt) |
| { |
| Configuration config = getConfiguration(); |
| |
| // |
| // Should modify the configuration class to take defaults |
| // here, should have to do this. |
| // |
| String[] fileExtensionAssociations = |
| config.getStringArray(TEMPLATE_EXTENSIONS); |
| |
| if (fileExtensionAssociations == null || |
| fileExtensionAssociations.length == 0) |
| { |
| fileExtensionAssociations = new String[1]; |
| fileExtensionAssociations[0] = config.getString( |
| DEFAULT_TEMPLATE_EXTENSION, defaultExt); |
| } |
| |
| configuration.put(TEMPLATE_EXTENSIONS, fileExtensionAssociations); |
| |
| /* |
| * We need some better error checking here and should probably |
| * throw an exception here if these things aren't set |
| * up correctly. |
| */ |
| |
| String[] copyParams = { |
| DEFAULT_PAGE, |
| DEFAULT_SCREEN, |
| DEFAULT_LAYOUT, |
| DEFAULT_NAVIGATION, |
| DEFAULT_ERROR_SCREEN, |
| DEFAULT_LAYOUT_TEMPLATE, |
| DEFAULT_SCREEN_TEMPLATE |
| }; |
| |
| for (String copyParam : copyParams) |
| { |
| configuration.put(copyParam, config.getString(copyParam, "")); |
| } |
| } |
| |
| /** |
| * @see org.apache.turbine.services.template.TemplateEngineService#templateExists |
| */ |
| @Override |
| public abstract boolean templateExists(String template); |
| } |