1 files changed, 112 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/extension/ExternalServiceBuilderSupport.java b/sca-java-1.x/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/extension/ExternalServiceBuilderSupport.java
new file mode 100644
index 0000000000..7c030324f1
--- /dev/null
+++ b/sca-java-1.x/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/extension/ExternalServiceBuilderSupport.java
@@ -0,0 +1,112 @@
+/**
+ *
+ *  Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
+ *
+ *  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.tuscany.core.extension;
+
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+
+import org.apache.tuscany.core.builder.BuilderException;
+import org.apache.tuscany.core.builder.ContextFactoryBuilder;
+import org.apache.tuscany.core.builder.ContextFactoryBuilderRegistry;
+import org.apache.tuscany.core.system.annotation.Autowire;
+import org.apache.tuscany.core.wire.TargetWireFactory;
+import org.apache.tuscany.core.wire.service.WireFactoryService;
+import org.apache.tuscany.model.assembly.AssemblyObject;
+import org.apache.tuscany.model.assembly.Binding;
+import org.apache.tuscany.model.assembly.ConfiguredService;
+import org.apache.tuscany.model.assembly.ExternalService;
+import org.apache.tuscany.model.assembly.Service;
+import org.osoa.sca.annotations.Init;
+
+/**
+ * A base class for a {@link ContextFactoryBuilder} that creates {@link org.apache.tuscany.core.context.ExternalServiceContext}s
+ *
+ * @version $$Rev$$ $$Date$$
+ */
+public abstract class ExternalServiceBuilderSupport<T extends Binding> implements ContextFactoryBuilder {
+
+    private ContextFactoryBuilderRegistry builderRegistry;
+    private WireFactoryService wireService;
+    protected Class bindingClass;
+
+    public ExternalServiceBuilderSupport() {
+        // reflect the generic type of the subclass
+        Type type = this.getClass().getGenericSuperclass();
+        if (type instanceof ParameterizedType) {
+            bindingClass = (Class) ((ParameterizedType) type).getActualTypeArguments()[0];
+        } else {
+            throw new AssertionError("Subclasses of " + ContextFactoryBuilderSupport.class.getName() + " must be genericized");
+        }
+    }
+
+    public ExternalServiceBuilderSupport(WireFactoryService wireService) {
+        this();
+        this.wireService = wireService;
+    }
+
+    @Init(eager = true)
+    public void init() throws Exception {
+        builderRegistry.register(this);
+    }
+
+    @Autowire
+    public void setBuilderRegistry(ContextFactoryBuilderRegistry registry) {
+        builderRegistry = registry;
+    }
+
+    @Autowire
+    public void setWireService(WireFactoryService wireService) {
+        this.wireService = wireService;
+    }
+
+    public void build(AssemblyObject object) throws BuilderException {
+        if (!(object instanceof ExternalService)) {
+            return;
+        }
+        ExternalService externalService = (ExternalService) object;
+        if (externalService.getBindings().size() < 1) {
+            //   || !(handlesBindingType(externalService.getBindings().get(0)))) {
+            return;
+        }
+        if (!bindingClass.isAssignableFrom(externalService.getBindings().get(0).getClass())) {
+            return;
+        }
+
+        ExternalServiceContextFactory contextFactory
+                = createExternalServiceContextFactory(externalService);
+
+        ConfiguredService configuredService = externalService.getConfiguredService();
+        Service service = configuredService.getPort();
+        TargetWireFactory wireFactory = wireService.createTargetFactory(configuredService);
+        contextFactory.addTargetWireFactory(service.getName(), wireFactory);
+        externalService.setContextFactory(contextFactory);
+    }
+
+    /**
+     * Returns true if an extending implementation can process the given binding element
+     */
+    //protected abstract boolean handlesBindingType(Binding binding);
+
+    /**
+     * Callback to create the specific <code>ContextFactory</code> type associated with the extending
+     * implementation
+     *
+     * @param externalService the external service being processed
+     */
+    protected abstract ExternalServiceContextFactory createExternalServiceContextFactory(ExternalService externalService);
+
+}