Author: mbenson
Date: Thu Jul 22 18:14:42 2010
New Revision: 966779
URL: http://svn.apache.org/viewvc?rev=966779&view=rev
Log:
add ProxyFactory that delegates to discovered service providers
Added:
commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/DefaultProxyFactory.java
Modified:
commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/ProxyUtils.java
Added:
commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/DefaultProxyFactory.java
URL:
http://svn.apache.org/viewvc/commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/DefaultProxyFactory.java?rev=966779&view=auto
==============================================================================
---
commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/DefaultProxyFactory.java
(added)
+++
commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/DefaultProxyFactory.java
Thu Jul 22 18:14:42 2010
@@ -0,0 +1,116 @@
+/*
+ * 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.commons.proxy2;
+
+import java.util.Arrays;
+import java.util.ServiceLoader;
+
+/**
+ * {...@link ProxyFactory} implementation that delegates to the first
discovered
+ * {...@link ProxyFactory} service provider that {...@link
#canProxy(Class...)}.
+ *
+ * @author Matt Benson
+ */
+class DefaultProxyFactory implements ProxyFactory {
+ /** Shared instance */
+ static final DefaultProxyFactory INSTANCE = new DefaultProxyFactory();
+
+ private static final ServiceLoader<ProxyFactory> SERVICES = ServiceLoader
+ .load(ProxyFactory.class);
+
+ /**
+ * {...@inheritdoc}
+ */
+ @Override
+ public boolean canProxy(Class<?>... proxyClasses) {
+ for (ProxyFactory proxyFactory : SERVICES) {
+ if (proxyFactory.canProxy(proxyClasses)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * {...@inheritdoc}
+ */
+ @Override
+ public <T> T createDelegatorProxy(ObjectProvider<?> delegateProvider,
+ Class<?>... proxyClasses) {
+ return getCapableProxyFactory(proxyClasses).createDelegatorProxy(
+ delegateProvider, proxyClasses);
+ }
+
+ /**
+ * {...@inheritdoc}
+ */
+ @Override
+ public <T> T createDelegatorProxy(ClassLoader classLoader,
+ ObjectProvider<?> delegateProvider, Class<?>... proxyClasses) {
+ return getCapableProxyFactory(proxyClasses).createDelegatorProxy(
+ classLoader, delegateProvider, proxyClasses);
+ }
+
+ /**
+ * {...@inheritdoc}
+ */
+ @Override
+ public <T> T createInterceptorProxy(Object target, Interceptor interceptor,
+ Class<?>... proxyClasses) {
+ return getCapableProxyFactory(proxyClasses).createInterceptorProxy(
+ target, interceptor, proxyClasses);
+ }
+
+ /**
+ * {...@inheritdoc}
+ */
+ @Override
+ public <T> T createInterceptorProxy(ClassLoader classLoader, Object target,
+ Interceptor interceptor, Class<?>... proxyClasses) {
+ return getCapableProxyFactory(proxyClasses).createInterceptorProxy(
+ classLoader, target, interceptor, proxyClasses);
+ }
+
+ /**
+ * {...@inheritdoc}
+ */
+ @Override
+ public <T> T createInvokerProxy(Invoker invoker, Class<?>... proxyClasses)
{
+ return getCapableProxyFactory(proxyClasses).createInvokerProxy(invoker,
+ proxyClasses);
+ }
+
+ /**
+ * {...@inheritdoc}
+ */
+ @Override
+ public <T> T createInvokerProxy(ClassLoader classLoader, Invoker invoker,
+ Class<?>... proxyClasses) {
+ return getCapableProxyFactory(proxyClasses).createInvokerProxy(
+ classLoader, invoker, proxyClasses);
+ }
+
+ private ProxyFactory getCapableProxyFactory(Class<?>... proxyClasses) {
+ for (ProxyFactory proxyFactory : SERVICES) {
+ if (proxyFactory.canProxy(proxyClasses)) {
+ return proxyFactory;
+ }
+ }
+ throw new IllegalArgumentException("Could not proxy "
+ + Arrays.toString(proxyClasses));
+ }
+}
Modified:
commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/ProxyUtils.java
URL:
http://svn.apache.org/viewvc/commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/ProxyUtils.java?rev=966779&r1=966778&r2=966779&view=diff
==============================================================================
---
commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/ProxyUtils.java
(original)
+++
commons/proper/proxy/branches/version-2.0-work/core/src/main/java/org/apache/commons/proxy2/ProxyUtils.java
Thu Jul 22 18:14:42 2010
@@ -79,7 +79,7 @@ public class ProxyUtils
*/
public static Object createNullObject(ProxyFactory proxyFactory,
Class<?>[] proxyClasses)
{
- return proxyFactory.createInvokerProxy(new NullInvoker(),
proxyClasses);
+ return proxyFactory.createInvokerProxy(NullInvoker.INSTANCE,
proxyClasses);
}
/**
@@ -92,7 +92,7 @@ public class ProxyUtils
*/
public static Object createNullObject(ProxyFactory proxyFactory,
ClassLoader classLoader, Class<?>[] proxyClasses)
{
- return proxyFactory.createInvokerProxy(classLoader, new NullInvoker(),
proxyClasses);
+ return proxyFactory.createInvokerProxy(classLoader,
NullInvoker.INSTANCE, proxyClasses);
}
/**
@@ -204,4 +204,11 @@ public class ProxyUtils
method.getParameterTypes().length == 0;
}
+ /**
+ * Get a {...@link ProxyFactory} that delegates to discoverable {...@link
ProxyFactory} service providers.
+ * @return {...@link ProxyFactory}
+ */
+ public static ProxyFactory proxyFactory() {
+ return DefaultProxyFactory.INSTANCE;
+ }
}
