| /** |
| * 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.camel.blueprint; |
| |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.camel.NoSuchBeanException; |
| import org.apache.camel.spi.Registry; |
| import org.osgi.framework.Bundle; |
| import org.osgi.service.blueprint.container.BlueprintContainer; |
| import org.osgi.service.blueprint.container.NoSuchComponentException; |
| import org.osgi.service.blueprint.reflect.BeanMetadata; |
| import org.osgi.service.blueprint.reflect.ComponentMetadata; |
| import org.osgi.service.blueprint.reflect.ReferenceMetadata; |
| |
| public class BlueprintContainerRegistry implements Registry { |
| |
| private final BlueprintContainer blueprintContainer; |
| |
| public BlueprintContainerRegistry(BlueprintContainer blueprintContainer) { |
| this.blueprintContainer = blueprintContainer; |
| } |
| |
| public Object lookup(String name) { |
| return blueprintContainer.getComponentInstance(name); |
| } |
| |
| public <T> T lookup(String name, Class<T> type) { |
| Object answer; |
| try { |
| answer = blueprintContainer.getComponentInstance(name); |
| } catch (NoSuchComponentException e) { |
| return null; |
| } |
| |
| // just to be safe |
| if (answer == null) { |
| return null; |
| } |
| |
| try { |
| return type.cast(answer); |
| } catch (Throwable e) { |
| String msg = "Found bean: " + name + " in BlueprintContainer: " + blueprintContainer |
| + " of type: " + answer.getClass().getName() + " expected type was: " + type; |
| throw new NoSuchBeanException(name, msg, e); |
| } |
| } |
| |
| public <T> Map<String, T> lookupByType(Class<T> type) { |
| return lookupByType(blueprintContainer, type); |
| } |
| |
| public static <T> Map<String, T> lookupByType(BlueprintContainer blueprintContainer, Class<T> type) { |
| Bundle bundle = (Bundle) blueprintContainer.getComponentInstance("blueprintBundle"); |
| Map<String, T> objects = new LinkedHashMap<String, T>(); |
| @SuppressWarnings("unchecked") |
| Set<String> ids = blueprintContainer.getComponentIds(); |
| for (String id : ids) { |
| try { |
| ComponentMetadata metadata = blueprintContainer.getComponentMetadata(id); |
| Class cl = null; |
| if (metadata instanceof BeanMetadata) { |
| BeanMetadata beanMetadata = (BeanMetadata)metadata; |
| cl = bundle.loadClass(beanMetadata.getClassName()); |
| } else if (metadata instanceof ReferenceMetadata) { |
| ReferenceMetadata referenceMetadata = (ReferenceMetadata)metadata; |
| cl = bundle.loadClass(referenceMetadata.getInterface()); |
| } |
| if (cl != null && type.isAssignableFrom(cl)) { |
| Object o = blueprintContainer.getComponentInstance(metadata.getId()); |
| objects.put(metadata.getId(), type.cast(o)); |
| } |
| } catch (Throwable t) { |
| // ignore |
| } |
| } |
| return objects; |
| } |
| } |