svn commit: r239302 - in /jakarta/commons/sandbox/proxy/trunk/src/java/org/apache/commons/proxy/interceptor: ./ MethodInterceptorChain.java filter/

[jc...@apache.org]

Author: jcarman
Date: Mon Aug 22 20:01:17 2005
New Revision: 239302

URL: http://svn.apache.org/viewcvs?rev=239302&view=rev
Log:
Adding MethodInterceptorChain

Added:
    jakarta/commons/sandbox/proxy/trunk/src/java/org/apache/commons/proxy/interceptor/
    jakarta/commons/sandbox/proxy/trunk/src/java/org/apache/commons/proxy/interceptor/MethodInterceptorChain.java
    jakarta/commons/sandbox/proxy/trunk/src/java/org/apache/commons/proxy/interceptor/filter/

Added: jakarta/commons/sandbox/proxy/trunk/src/java/org/apache/commons/proxy/interceptor/MethodInterceptorChain.java
URL: http://svn.apache.org/viewcvs/jakarta/commons/sandbox/proxy/trunk/src/java/org/apache/commons/proxy/interceptor/MethodInterceptorChain.java?rev=239302&view=auto
==============================================================================
--- jakarta/commons/sandbox/proxy/trunk/src/java/org/apache/commons/proxy/interceptor/MethodInterceptorChain.java (added)
+++ jakarta/commons/sandbox/proxy/trunk/src/java/org/apache/commons/proxy/interceptor/MethodInterceptorChain.java Mon Aug 22 20:01:17 2005
@@ -0,0 +1,79 @@
+/*
+ *  Copyright 2005 The Apache Software Foundation
+ *
+ *  Licensed 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.proxy.interceptor;
+
+import org.aopalliance.intercept.MethodInterceptor;
+import org.apache.commons.proxy.ProxyFactory;
+import org.apache.commons.proxy.ObjectProvider;
+
+/**
+ * @author James Carman
+ * @version 1.0
+ */
+public class MethodInterceptorChain
+{
+    private final MethodInterceptor[] interceptors;
+
+    public MethodInterceptorChain( MethodInterceptor... interceptors )
+    {
+        this.interceptors = interceptors;
+    }
+
+    public ObjectProvider createProxyProvider( ProxyFactory proxyFactory, ClassLoader classLoader, Object terminus, Class... proxyInterfaces )
+    {
+        if( proxyInterfaces.length == 0 )
+        {
+            proxyInterfaces = terminus.getClass().getInterfaces();
+        }
+        return new ProxyObjectProvider( proxyFactory, classLoader, terminus, proxyInterfaces );
+    }
+
+    public ObjectProvider createProxyProvider( ProxyFactory proxyFactory, Object terminus, Class... proxyInterfaces )
+    {
+        return createProxyProvider( proxyFactory, Thread.currentThread().getContextClassLoader(), terminus, proxyInterfaces );
+    }
+
+    private Object createProxy( ProxyFactory proxyFactory, ClassLoader classLoader, Object terminus, Class... proxyInterfaces )
+    {
+        Object currentTarget = terminus;
+        for( int i = interceptors.length - 1; i >= 0; --i )
+        {
+            currentTarget = proxyFactory.createInterceptorProxy( classLoader, currentTarget, interceptors[i], proxyInterfaces );
+        }
+        return currentTarget;
+    }
+
+    private class ProxyObjectProvider implements ObjectProvider
+    {
+        private final ClassLoader classLoader;
+        private final Class[] proxyInterfaces;
+        private final Object terminus;
+        private final ProxyFactory proxyFactory;
+
+        public ProxyObjectProvider( ProxyFactory proxyFactory, ClassLoader classLoader, Object terminus, Class[] proxyInterfaces )
+        {
+            this.classLoader = classLoader;
+            this.proxyInterfaces = proxyInterfaces;
+            this.terminus = terminus;
+            this.proxyFactory = proxyFactory;
+        }
+
+        public Object getObject()
+        {
+            return createProxy( proxyFactory, classLoader, terminus, proxyInterfaces );
+        }
+    }
+}



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