| /* |
| * 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.felix.webconsole.plugins.scriptconsole.internal; |
| |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.InvalidSyntaxException; |
| import org.osgi.framework.ServiceReference; |
| |
| import java.lang.reflect.Array; |
| import java.util.*; |
| |
| class ScriptHelper |
| { |
| /** The bundle context. */ |
| private final BundleContext bundleContext; |
| |
| /** |
| * The list of references - we don't need to synchronize this as we are |
| * running in one single request. |
| */ |
| private List<ServiceReference> references; |
| |
| /** A map of found services. */ |
| private Map<String, Object> services; |
| |
| public ScriptHelper(BundleContext bundleContext) |
| { |
| this.bundleContext = bundleContext; |
| } |
| |
| @SuppressWarnings("unchecked") |
| public <ServiceType> ServiceType getService(Class<ServiceType> type) |
| { |
| ServiceType service = (this.services == null ? null |
| : (ServiceType) this.services.get(type.getName())); |
| if (service == null) |
| { |
| final ServiceReference ref = this.bundleContext.getServiceReference(type.getName()); |
| if (ref != null) |
| { |
| service = (ServiceType) this.bundleContext.getService(ref); |
| if (service != null) |
| { |
| if (this.services == null) |
| { |
| this.services = new HashMap<String, Object>(); |
| } |
| if (this.references == null) |
| { |
| this.references = new ArrayList<ServiceReference>(); |
| } |
| this.references.add(ref); |
| this.services.put(type.getName(), service); |
| } |
| } |
| } |
| return service; |
| } |
| |
| public <ServiceType> ServiceType[] getServices(Class<ServiceType> serviceType, |
| String filter) throws InvalidSyntaxException |
| { |
| final ServiceReference[] refs = this.bundleContext.getServiceReferences( |
| serviceType.getName(), filter); |
| ServiceType[] result = null; |
| if (refs != null) |
| { |
| final List<ServiceType> objects = new ArrayList<ServiceType>(); |
| for (int i = 0; i < refs.length; i++) |
| { |
| @SuppressWarnings("unchecked") |
| final ServiceType service = (ServiceType) this.bundleContext.getService(refs[i]); |
| if (service != null) |
| { |
| if (this.references == null) |
| { |
| this.references = new ArrayList<ServiceReference>(); |
| } |
| this.references.add(refs[i]); |
| objects.add(service); |
| } |
| } |
| if (objects.size() > 0) |
| { |
| @SuppressWarnings("unchecked") |
| ServiceType[] srv = (ServiceType[]) Array.newInstance(serviceType, |
| objects.size()); |
| result = objects.toArray(srv); |
| } |
| } |
| return result; |
| } |
| |
| /** |
| * Clean up this instance. |
| */ |
| public void cleanup() |
| { |
| if (this.references != null) |
| { |
| final Iterator<ServiceReference> i = this.references.iterator(); |
| while (i.hasNext()) |
| { |
| final ServiceReference ref = i.next(); |
| this.bundleContext.ungetService(ref); |
| } |
| this.references.clear(); |
| } |
| if (this.services != null) |
| { |
| this.services.clear(); |
| } |
| } |
| } |