| /* |
| * 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.karaf.webconsole.osgi.core.shared; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.apache.karaf.webconsole.core.table.advanced.BaseDataProvider; |
| import org.apache.wicket.model.IModel; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.InvalidSyntaxException; |
| import org.osgi.framework.ServiceReference; |
| |
| /** |
| * OSGi service registry data provider. Scans registry for services matching |
| * given criteria. |
| * <strong>The service list might be outdated before model is used!</strong> |
| */ |
| public class ServiceDataProvider extends BaseDataProvider<ServiceReference> { |
| |
| private static final long serialVersionUID = 1L; |
| |
| /** |
| * List of services. |
| */ |
| private final transient List<ServiceReference> services; |
| |
| /** |
| * Base constructor. |
| * |
| * @param context Bundle context. |
| * @param clazz Class name. |
| * @param filter Filter to apply. |
| */ |
| public ServiceDataProvider(ServiceReference ... services) { |
| if (services != null) { |
| this.services = Arrays.asList(services); |
| } else { |
| this.services = new ArrayList<ServiceReference>(); |
| } |
| } |
| |
| public ServiceDataProvider(BundleContext context, String clazz, String filter) { |
| this(retrieveServices(context, clazz, filter)); |
| } |
| |
| private static ServiceReference[] retrieveServices(BundleContext context, String clazz, String filter) { |
| try { |
| ServiceReference[] references = context.getServiceReferences(clazz, filter); |
| return references != null ? references : new ServiceReference[0]; |
| } catch (InvalidSyntaxException e) { |
| throw new RuntimeException("Unable to list services", e); |
| } |
| } |
| |
| public ServiceDataProvider(BundleContext context, String clazz) { |
| this(context, clazz, "(objectClass=*)"); |
| } |
| |
| public ServiceDataProvider(BundleContext context, Class<?> clazz, String filter) { |
| this(context, clazz.getName(), filter); |
| } |
| |
| public ServiceDataProvider(BundleContext context, Class<?> clazz) { |
| this(context, clazz.getName()); |
| } |
| |
| // provider methods |
| public Iterator<? extends ServiceReference> iterator(long first, long count) { |
| return services.subList((int) first, (int) count).iterator(); |
| } |
| |
| public IModel<ServiceReference> model(ServiceReference object) { |
| return new ServiceReferenceModel(object); |
| } |
| |
| public long size() { |
| return services.size(); |
| } |
| |
| } |