| /* |
| * 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. |
| */ |
| package org.apache.sling.engine.impl.helper; |
| |
| import static org.osgi.framework.Constants.SERVICE_ID; |
| import static org.osgi.framework.Constants.SERVICE_PID; |
| import static org.osgi.service.component.ComponentConstants.COMPONENT_NAME; |
| |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.Enumeration; |
| import java.util.List; |
| |
| import javax.servlet.Filter; |
| import javax.servlet.FilterConfig; |
| import javax.servlet.ServletContext; |
| |
| import org.osgi.framework.ServiceReference; |
| |
| public class SlingFilterConfig implements FilterConfig { |
| |
| /** The list of property names checked by {@link #getName(ServiceReference)} */ |
| private static final String[] NAME_PROPERTIES = { "sling.core.servletName", |
| COMPONENT_NAME, SERVICE_PID, SERVICE_ID }; |
| |
| /** The <code>ServletContext</code> of this configuration object */ |
| private ServletContext servletContext; |
| |
| /** The <code>ServiceReference</code> providing the properties */ |
| private ServiceReference<Filter> reference; |
| |
| /** The name of this configuration object */ |
| private String name; |
| |
| |
| /** |
| * Sets up this base configuration object. |
| * |
| * @param servletContext The <code>ServletContext</code> attached to this |
| * configuration. |
| * @param reference The service reference providing the initialization |
| * parameter values. |
| * @param filterName The name of this configuration. |
| */ |
| public SlingFilterConfig(final ServletContext servletContext, |
| final ServiceReference<Filter> reference, |
| final String filterName) { |
| this.servletContext = servletContext; |
| this.reference = reference; |
| this.name = filterName; |
| } |
| |
| /** |
| * @see javax.servlet.FilterConfig#getInitParameter(java.lang.String) |
| */ |
| @Override |
| public String getInitParameter(String name) { |
| Object prop = reference.getProperty(name); |
| return (prop == null) ? null : String.valueOf(prop); |
| } |
| |
| /** |
| * @see javax.servlet.FilterConfig#getInitParameterNames() |
| */ |
| @Override |
| public Enumeration<String> getInitParameterNames() { |
| List<String> keys = Arrays.asList(reference.getPropertyKeys()); |
| return Collections.enumeration(keys); |
| } |
| |
| /** |
| * @see javax.servlet.FilterConfig#getServletContext() |
| */ |
| @Override |
| public ServletContext getServletContext() { |
| return servletContext; |
| } |
| |
| /** |
| * Looks for a name value in the service reference properties. See the class |
| * comment at the top for the list of properties checked by this method. As the |
| * service id is part of the checked property list this method always returns a |
| * name. |
| */ |
| public static String getName(ServiceReference<Filter> reference) { |
| String servletName = null; |
| for (int i = 0; i < NAME_PROPERTIES.length |
| && (servletName == null || servletName.length() == 0); i++) { |
| Object prop = reference.getProperty(NAME_PROPERTIES[i]); |
| if (prop != null) { |
| servletName = String.valueOf(prop); |
| } |
| } |
| return servletName; |
| } |
| |
| /** |
| * @see javax.servlet.FilterConfig#getFilterName() |
| */ |
| @Override |
| public String getFilterName() { |
| return name; |
| } |
| } |