| /** |
| * 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.cxf.transport; |
| |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.cxf.Bus; |
| import org.apache.cxf.configuration.ConfiguredBeanLocator; |
| import org.apache.cxf.helpers.CastUtils; |
| |
| /** |
| * |
| */ |
| public class TransportFinder<T> { |
| Map<String, T> map; |
| Set<String> loaded; |
| Class<T> cls; |
| ConfiguredBeanLocator locator; |
| |
| public TransportFinder(Bus b, |
| Map<String, T> m, |
| Set<String> l, |
| Class<T> c) { |
| map = m; |
| cls = c; |
| locator = b.getExtension(ConfiguredBeanLocator.class); |
| loaded = l; |
| } |
| |
| public T findTransportForNamespace(final String namespace) { |
| if (locator == null) { |
| return null; |
| } |
| T factory = loadActivationNamespaces(namespace); |
| if (factory == null) { |
| factory = loadDefaultNamespace(namespace); |
| } |
| if (factory == null) { |
| factory = loadNoDefaultNamespace(namespace); |
| } |
| if (factory == null) { |
| loadAll(); |
| factory = map.get(namespace); |
| } |
| return factory; |
| } |
| |
| |
| public T findTransportForURI(String uri) { |
| if (locator == null) { |
| return null; |
| } |
| //If the uri is related path or has no protocol prefix , we will set it to be http |
| if (uri.startsWith("/") || uri.indexOf(":") < 0) { |
| uri = "http://" + uri; |
| } |
| T factory = checkForURI(uri); |
| if (factory == null) { |
| //didn't find, now well need to search |
| factory = loadDefaultURIs(uri); |
| |
| if (factory == null) { |
| loadAll(); |
| factory = checkForURI(uri); |
| } |
| } |
| return factory; |
| } |
| |
| private static Set<String> getPrefixes(Object t) { |
| Set<String> prefixes = null; |
| if (t instanceof AbstractTransportFactory) { |
| AbstractTransportFactory atf = (AbstractTransportFactory)t; |
| prefixes = atf.getUriPrefixes(); |
| } else if (t instanceof DestinationFactory) { |
| DestinationFactory atf = (DestinationFactory)t; |
| prefixes = atf.getUriPrefixes(); |
| } else if (t instanceof ConduitInitiator) { |
| ConduitInitiator atf = (ConduitInitiator)t; |
| prefixes = atf.getUriPrefixes(); |
| } |
| return prefixes; |
| } |
| private boolean hasPrefix(String uri, Collection<String> prefixes) { |
| if (prefixes == null) { |
| return false; |
| } |
| for (String prefix : prefixes) { |
| if (uri.startsWith(prefix)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| public T checkForURI(String uri) { |
| //first attempt the ones already registered |
| for (T t : map.values()) { |
| if (hasPrefix(uri, getPrefixes(t))) { |
| return t; |
| } |
| } |
| return null; |
| } |
| |
| private void loadAll() { |
| ConfiguredBeanLocator.BeanLoaderListener<T> listener |
| = new ConfiguredBeanLocator.BeanLoaderListener<T>() { |
| public boolean beanLoaded(String name, T bean) { |
| loaded.add(name); |
| registerBean(bean); |
| return false; |
| } |
| public boolean loadBean(String name, Class<? extends T> type) { |
| return !loaded.contains(name); |
| } |
| }; |
| locator.loadBeansOfType(cls, listener); |
| } |
| |
| private void registerBean(T bean) { |
| if (bean instanceof AbstractTransportFactory) { |
| if (((AbstractTransportFactory)bean).getTransportIds() != null) { |
| for (String ns |
| : ((AbstractTransportFactory)bean).getTransportIds()) { |
| if (!map.containsKey(ns)) { |
| map.put(ns, bean); |
| } |
| } |
| } |
| } else { |
| try { |
| Method m = bean.getClass().getMethod("getActivationNamespaces", new Class[0]); |
| Collection<String> c = CastUtils.cast((Collection<?>)m.invoke(bean)); |
| for (String s : c) { |
| if (!map.containsKey(s)) { |
| map.put(s, bean); |
| } |
| } |
| } catch (Exception ex) { |
| //ignore |
| } |
| } |
| } |
| |
| |
| private T loadActivationNamespaces(final String namespace) { |
| //Try old method of having activationNamespaces configured in. |
| ConfiguredBeanLocator.BeanLoaderListener<T> listener |
| = new ConfiguredBeanLocator.BeanLoaderListener<T>() { |
| public boolean beanLoaded(String name, T bean) { |
| loaded.add(name); |
| if (!map.containsKey(namespace)) { |
| registerBean(bean); |
| } |
| return map.containsKey(namespace); |
| } |
| |
| public boolean loadBean(String name, Class<? extends T> type) { |
| return locator.hasConfiguredPropertyValue(name, |
| "transportIds", |
| namespace); |
| } |
| }; |
| locator.loadBeansOfType(cls, listener); |
| return map.get(namespace); |
| } |
| |
| |
| |
| |
| private T loadDefaultURIs(final String uri) { |
| //First attempt will be to examine the factory class |
| //for a DEFAULT_URIS field and use it |
| URIBeanLoaderListener listener |
| = new URIBeanLoaderListener(uri) { |
| |
| public boolean loadBean(String name, Class<? extends T> type) { |
| try { |
| Field f = type.getField("DEFAULT_URIS"); |
| Object o = f.get(null); |
| if (o instanceof Collection) { |
| Collection<String> c = CastUtils.cast((Collection<?>)o); |
| return hasPrefix(uri, c); |
| } |
| } catch (Exception ex) { |
| //ignore |
| } |
| return false; |
| } |
| }; |
| locator.loadBeansOfType(cls, listener); |
| return listener.getFactory(); |
| } |
| |
| abstract class URIBeanLoaderListener implements ConfiguredBeanLocator.BeanLoaderListener<T> { |
| T factory; |
| String uri; |
| |
| URIBeanLoaderListener(String u) { |
| uri = u; |
| } |
| |
| public T getFactory() { |
| return factory; |
| } |
| public boolean beanLoaded(String name, T bean) { |
| registerBean(bean); |
| if (hasPrefix(uri, getPrefixes(bean))) { |
| factory = bean; |
| return true; |
| } |
| return false; |
| } |
| |
| } |
| |
| private T loadDefaultNamespace(final String namespace) { |
| //First attempt will be to examine the factory class |
| //for a DEFAULT_NAMESPACES field and use it |
| ConfiguredBeanLocator.BeanLoaderListener<T> listener |
| = new ConfiguredBeanLocator.BeanLoaderListener<T>() { |
| public boolean beanLoaded(String name, T bean) { |
| loaded.add(name); |
| registerBean(bean); |
| return map.containsKey(namespace); |
| } |
| |
| public boolean loadBean(String name, Class<? extends T> type) { |
| if (loaded.contains(name)) { |
| return false; |
| } |
| try { |
| Field f = type.getField("DEFAULT_NAMESPACES"); |
| Object o = f.get(null); |
| if (o instanceof Collection) { |
| Collection<String> c = CastUtils.cast((Collection<?>)o); |
| return c.contains(namespace); |
| } |
| } catch (Exception ex) { |
| //ignore |
| } |
| return false; |
| } |
| }; |
| locator.loadBeansOfType(cls, listener); |
| |
| return map.get(namespace); |
| } |
| private T loadNoDefaultNamespace(final String namespace) { |
| //Second attempt will be to examine the factory class |
| //for a DEFAULT_NAMESPACES field and if it doesn't exist, try |
| //loading. This will then load most of the "older" things |
| ConfiguredBeanLocator.BeanLoaderListener<T> listener |
| = new ConfiguredBeanLocator.BeanLoaderListener<T>() { |
| public boolean beanLoaded(String name, T bean) { |
| loaded.add(name); |
| registerBean(bean); |
| return map.containsKey(namespace); |
| } |
| |
| public boolean loadBean(String name, Class<? extends T> type) { |
| if (loaded.contains(name)) { |
| return false; |
| } |
| try { |
| type.getField("DEFAULT_NAMESPACES"); |
| return false; |
| } catch (Exception ex) { |
| //ignore |
| } |
| return true; |
| } |
| }; |
| locator.loadBeansOfType(cls, listener); |
| |
| return map.get(namespace); |
| } |
| |
| |
| } |