1 files changed, 69 insertions, 0 deletions
diff --git a/tags/java/sca/1.5.1/modules/extension-helper/src/main/java/org/apache/tuscany/sca/extension/helper/BindingActivator.java b/tags/java/sca/1.5.1/modules/extension-helper/src/main/java/org/apache/tuscany/sca/extension/helper/BindingActivator.java
new file mode 100644
index 0000000000..e117e952c7
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+++ b/tags/java/sca/1.5.1/modules/extension-helper/src/main/java/org/apache/tuscany/sca/extension/helper/BindingActivator.java
@@ -0,0 +1,69 @@
+/*
+ * 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.tuscany.sca.extension.helper;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+
+/**
+ * A BindingActivator adds an SCA binding type to the Tuscany runtime.
+ * 
+ * The SCDL XML used for the binding is derived from the name of the
+ * class returned from the getBindingClass method - the package name and
+ * any trailing "Binding" string is removed, leading upper case characters
+ * are converted to lowercase, and the suffix "binding." is added.
+ * For example if getBindingClass returns a class named "mypkg.FooBinding"
+ * then the SCDL for the binding will be <binding.foo>.
+ * 
+ * Attributes of the <binding.foo> SCDL are based on the getters/setters of
+ * the binding class. So if FooBinding had getBar/setBar then there
+ * would be an attribute name 'bar', for example, <binding.foo bar="xxx">. 
+ * 
+ * BindingActivator implementations may use constructor arguments to have 
+ * Tuscany ExtensionPointRegistry objects passed in on their constructor.
+ * For example:
+ * 
+ *    public class MyBindingActivator implements BindingActivator {
+ *       ServletHost servletHost;
+ *       public MyBindingActivator(ServletHost servletHost) {
+ *          this.servletHost = servletHost;
+ *       }
+ *       ...
+ *    }
+ *    
+ * BindingActivator implementations are discovered by the Tuscany runtime
+ * using the J2SE jar file extensions for service provider discovery. All
+ * that means is packaging the new binding type in a jar which contains a  
+ * file META-INF/services/org.apache.tuscany.sca.extension.helper.BindingActivator and
+ * that file lists the BindingActivator implementation class name.
+ *
+ * @version $Rev$ $Date$
+ */
+public interface BindingActivator<B> {
+
+    Class<B> getBindingClass();
+
+    InvokerFactory createInvokerFactory(RuntimeComponent rc, RuntimeComponentReference rcr, Binding b, B pojoBinding);
+    
+    ComponentLifecycle createService(RuntimeComponent rc, RuntimeComponentService rcs, Binding b, B pojoBinding);
+    
+}