Turn the set of built-in transformers into declared extensions

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@822946 13f79535-47bb-0310-9956-ffa450edef68

8 files changed, 67 insertions, 80 deletions

diff --git a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/module/DataBindingModuleActivator.java b/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/module/DataBindingModuleActivator.java
index fd41a7f113..efaf241aec 100644
--- a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/module/DataBindingModuleActivator.java
+++ b/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/module/DataBindingModuleActivator.java
@@ -22,19 +22,11 @@ package org.apache.tuscany.sca.core.databinding.module;
 import org.apache.tuscany.sca.core.ExtensionPointRegistry;
 import org.apache.tuscany.sca.core.FactoryExtensionPoint;
 import org.apache.tuscany.sca.core.ModuleActivator;
-import org.apache.tuscany.sca.core.UtilityExtensionPoint;
 import org.apache.tuscany.sca.core.databinding.processor.DataBindingJavaInterfaceProcessor;
 import org.apache.tuscany.sca.core.databinding.processor.WrapperJavaInterfaceProcessor;
-import org.apache.tuscany.sca.core.databinding.transformers.Array2ArrayTransformer;
-import org.apache.tuscany.sca.core.databinding.transformers.Exception2ExceptionTransformer;
-import org.apache.tuscany.sca.core.databinding.transformers.Input2InputTransformer;
-import org.apache.tuscany.sca.core.databinding.transformers.Output2OutputTransformer;
 import org.apache.tuscany.sca.core.databinding.wire.DataBindingRuntimeWireProcessor;
 import org.apache.tuscany.sca.databinding.DataBindingExtensionPoint;
-import org.apache.tuscany.sca.databinding.Mediator;
 import org.apache.tuscany.sca.databinding.TransformerExtensionPoint;
-import org.apache.tuscany.sca.databinding.impl.Group2GroupTransformer;
-import org.apache.tuscany.sca.interfacedef.FaultExceptionMapper;
 import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
 import org.apache.tuscany.sca.interfacedef.java.jaxws.JAXWSJavaInterfaceProcessor;
 import org.apache.tuscany.sca.interfacedef.java.jaxws.WebServiceInterfaceProcessor;
@@ -49,28 +41,22 @@ public class DataBindingModuleActivator implements ModuleActivator {
         DataBindingExtensionPoint dataBindings = registry.getExtensionPoint(DataBindingExtensionPoint.class);
         TransformerExtensionPoint transformers = registry.getExtensionPoint(TransformerExtensionPoint.class);
 
-        FaultExceptionMapper faultExceptionMapper = registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(FaultExceptionMapper.class);
-        
-        Mediator mediator = registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(Mediator.class);
+        /*
+        Input2InputTransformer input2InputTransformer = new Input2InputTransformer(registry);
+        transformers.addTransformer(input2InputTransformer, false);
 
-        Input2InputTransformer input2InputTransformer = new Input2InputTransformer();
-        input2InputTransformer.setMediator(mediator);
-        transformers.addTransformer(input2InputTransformer, true);
+        Output2OutputTransformer output2OutputTransformer = new Output2OutputTransformer(registry);
+        transformers.addTransformer(output2OutputTransformer, false);
 
-        Output2OutputTransformer output2OutputTransformer = new Output2OutputTransformer();
-        output2OutputTransformer.setMediator(mediator);
-        transformers.addTransformer(output2OutputTransformer, true);
-
-        Exception2ExceptionTransformer exception2ExceptionTransformer = new Exception2ExceptionTransformer(mediator, faultExceptionMapper);
+        Exception2ExceptionTransformer exception2ExceptionTransformer = new Exception2ExceptionTransformer(registry);
         transformers.addTransformer(exception2ExceptionTransformer, false);
 
-        Array2ArrayTransformer array2ArrayTransformer = new Array2ArrayTransformer();
-        array2ArrayTransformer.setMediator(mediator);
-        transformers.addTransformer(array2ArrayTransformer, true);
+        Array2ArrayTransformer array2ArrayTransformer = new Array2ArrayTransformer(registry);
+        transformers.addTransformer(array2ArrayTransformer, false);
 
-        Group2GroupTransformer group2GroupTransformer = new Group2GroupTransformer();
-        group2GroupTransformer.setMediator(mediator);
-        transformers.addTransformer(group2GroupTransformer, true);
+        Group2GroupTransformer group2GroupTransformer = new Group2GroupTransformer(registry);
+        transformers.addTransformer(group2GroupTransformer, false);
+        */
 
 //        dataBindings.addDataBinding(new CallableReferenceDataBinding());
 //        transformers.addTransformer(new CallableReference2XMLStreamReader(), true);
@@ -87,7 +73,7 @@ public class DataBindingModuleActivator implements ModuleActivator {
 
         RuntimeWireProcessorExtensionPoint wireProcessorExtensionPoint = registry.getExtensionPoint(RuntimeWireProcessorExtensionPoint.class);
         if (wireProcessorExtensionPoint != null) {
-            wireProcessorExtensionPoint.addWireProcessor(new DataBindingRuntimeWireProcessor(mediator));
+            wireProcessorExtensionPoint.addWireProcessor(new DataBindingRuntimeWireProcessor(registry));
         }
 
     }
diff --git a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Array2ArrayTransformer.java b/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Array2ArrayTransformer.java
index 427e0b254a..7146f0fa36 100644
--- a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Array2ArrayTransformer.java
+++ b/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Array2ArrayTransformer.java
@@ -20,13 +20,14 @@ package org.apache.tuscany.sca.core.databinding.transformers;
 
 import java.lang.reflect.Array;
 
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
 import org.apache.tuscany.sca.databinding.Mediator;
 import org.apache.tuscany.sca.databinding.PullTransformer;
 import org.apache.tuscany.sca.databinding.TransformationContext;
 import org.apache.tuscany.sca.databinding.TransformationException;
 import org.apache.tuscany.sca.databinding.impl.BaseTransformer;
 import org.apache.tuscany.sca.interfacedef.DataType;
-import org.oasisopen.sca.annotation.Reference;
 
 /**
  * This is a special transformer to transform the output from one IDL to the
@@ -38,16 +39,9 @@ public class Array2ArrayTransformer extends BaseTransformer<Object, Object> impl
 
     protected Mediator mediator;
 
-    public Array2ArrayTransformer() {
+    public Array2ArrayTransformer(ExtensionPointRegistry registry) {
         super();
-    }
-
-    /**
-     * @param mediator the mediator to set
-     */
-    @Reference
-    public void setMediator(Mediator mediator) {
-        this.mediator = mediator;
+        this.mediator = registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(Mediator.class);
     }
 
     @Override
diff --git a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Exception2ExceptionTransformer.java b/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Exception2ExceptionTransformer.java
index 6e2e714bdb..18746d0fc8 100644
--- a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Exception2ExceptionTransformer.java
+++ b/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Exception2ExceptionTransformer.java
@@ -19,6 +19,8 @@
 
 package org.apache.tuscany.sca.core.databinding.transformers;
 
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
 import org.apache.tuscany.sca.databinding.DataBinding;
 import org.apache.tuscany.sca.databinding.Mediator;
 import org.apache.tuscany.sca.databinding.PullTransformer;
@@ -39,7 +41,14 @@ public class Exception2ExceptionTransformer extends BaseTransformer<Throwable, T
     protected Mediator mediator;
     protected FaultExceptionMapper faultExceptionMapper;
 
-    public Exception2ExceptionTransformer(Mediator mediator, FaultExceptionMapper faultExceptionMapper) {
+    public Exception2ExceptionTransformer(ExtensionPointRegistry registry) {
+        super();
+        UtilityExtensionPoint utilityExtensionPoint = registry.getExtensionPoint(UtilityExtensionPoint.class);
+        this.mediator = utilityExtensionPoint.getUtility(Mediator.class);
+        this.faultExceptionMapper = utilityExtensionPoint.getUtility(FaultExceptionMapper.class);
+    }
+    
+    protected Exception2ExceptionTransformer(Mediator mediator, FaultExceptionMapper faultExceptionMapper) {
         super();
         this.mediator = mediator;
         this.faultExceptionMapper = faultExceptionMapper;
@@ -60,13 +69,6 @@ public class Exception2ExceptionTransformer extends BaseTransformer<Throwable, T
     }
 
     /**
-     * @param mediator the mediator to set
-     */
-    public void setMediator(Mediator mediator) {
-        this.mediator = mediator;
-    }
-
-    /**
      * @see org.apache.tuscany.sca.databinding.impl.BaseTransformer#getSourceType()
      */
     @Override
diff --git a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Input2InputTransformer.java b/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Input2InputTransformer.java
index b05f0cc238..3422713bb3 100644
--- a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Input2InputTransformer.java
+++ b/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Input2InputTransformer.java
@@ -20,8 +20,9 @@
 package org.apache.tuscany.sca.core.databinding.transformers;
 
 import java.util.List;
-import java.util.logging.Logger;
 
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
 import org.apache.tuscany.sca.databinding.DataBinding;
 import org.apache.tuscany.sca.databinding.Mediator;
 import org.apache.tuscany.sca.databinding.PullTransformer;
@@ -34,7 +35,6 @@ import org.apache.tuscany.sca.interfacedef.Operation;
 import org.apache.tuscany.sca.interfacedef.util.ElementInfo;
 import org.apache.tuscany.sca.interfacedef.util.WrapperInfo;
 import org.apache.tuscany.sca.interfacedef.util.XMLType;
-import org.oasisopen.sca.annotation.Reference;
 
 /**
  * This is a special transformer to transform the input from one IDL to the
@@ -44,12 +44,11 @@ import org.oasisopen.sca.annotation.Reference;
  */
 public class Input2InputTransformer extends BaseTransformer<Object[], Object[]> implements
     PullTransformer<Object[], Object[]> {
-    private static final Logger logger = Logger.getLogger(Input2InputTransformer.class.getName());
-
     protected Mediator mediator;
 
-    public Input2InputTransformer() {
+    public Input2InputTransformer(ExtensionPointRegistry registry) {
         super();
+        this.mediator = registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(Mediator.class);
     }
 
     @Override
@@ -63,14 +62,6 @@ public class Input2InputTransformer extends BaseTransformer<Object[], Object[]>
     }
 
     /**
-     * @param mediator the mediator to set
-     */
-    @Reference
-    public void setMediator(Mediator mediator) {
-        this.mediator = mediator;
-    }
-
-    /**
      * @see org.apache.tuscany.sca.databinding.impl.BaseTransformer#getSourceType()
      */
     @Override
diff --git a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Output2OutputTransformer.java b/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Output2OutputTransformer.java
index d5ba528475..08442134b9 100644
--- a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Output2OutputTransformer.java
+++ b/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Output2OutputTransformer.java
@@ -20,6 +20,8 @@ package org.apache.tuscany.sca.core.databinding.transformers;
 
 import java.util.List;
 
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
 import org.apache.tuscany.sca.databinding.DataBinding;
 import org.apache.tuscany.sca.databinding.Mediator;
 import org.apache.tuscany.sca.databinding.PullTransformer;
@@ -32,7 +34,6 @@ import org.apache.tuscany.sca.interfacedef.Operation;
 import org.apache.tuscany.sca.interfacedef.util.ElementInfo;
 import org.apache.tuscany.sca.interfacedef.util.WrapperInfo;
 import org.apache.tuscany.sca.interfacedef.util.XMLType;
-import org.oasisopen.sca.annotation.Reference;
 
 /**
  * This is a special transformer to transform the output from one IDL to the
@@ -48,16 +49,9 @@ public class Output2OutputTransformer extends BaseTransformer<Object, Object> im
     /**
      * @param wrapperHandler
      */
-    public Output2OutputTransformer() {
+    public Output2OutputTransformer(ExtensionPointRegistry registry) {
         super();
-    }
-
-    /**
-     * @param mediator the mediator to set
-     */
-    @Reference
-    public void setMediator(Mediator mediator) {
-        this.mediator = mediator;
+        this.mediator = registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(Mediator.class);
     }
 
     @Override
diff --git a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataBindingRuntimeWireProcessor.java b/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataBindingRuntimeWireProcessor.java
index 4b64b29e7b..446651c918 100644
--- a/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataBindingRuntimeWireProcessor.java
+++ b/java/sca/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/wire/DataBindingRuntimeWireProcessor.java
@@ -42,11 +42,6 @@ import org.apache.tuscany.sca.runtime.RuntimeWireProcessor;
  */
 public class DataBindingRuntimeWireProcessor implements RuntimeWireProcessor {
     private Mediator mediator;
-
-    public DataBindingRuntimeWireProcessor(Mediator mediator) {
-        super();
-        this.mediator = mediator;
-    }
     
     public DataBindingRuntimeWireProcessor(ExtensionPointRegistry registry) {
         super();
diff --git a/java/sca/modules/core-databinding/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PullTransformer b/java/sca/modules/core-databinding/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PullTransformer
new file mode 100644
index 0000000000..f1510ad46c
--- /dev/null
+++ b/java/sca/modules/core-databinding/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PullTransformer
@@ -0,0 +1,29 @@
+# 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.

+

+# Implementation classes for special transformers

+#

+# Java array --> Java array

+org.apache.tuscany.sca.core.databinding.transformers.Array2ArrayTransformer;source=java:array,target=java:array,weight=10,public=false

+# Java exception --> Java exception 

+org.apache.tuscany.sca.core.databinding.transformers.Exception2ExceptionTransformer;source=idl:fault,target=idl:fault,weight=10,public=false

+# Input to Input

+org.apache.tuscany.sca.core.databinding.transformers.Input2InputTransformer;source=idl:input,target=idl:input,weight=10,public=false

+# Output to Output

+org.apache.tuscany.sca.core.databinding.transformers.Output2OutputTransformer;source=idl:output,target=idl:output,weight=10,public=false

+# Group to Group

+org.apache.tuscany.sca.databinding.impl.Group2GroupTransformer;source=databinding:group,target=databinding:group,weight=10,public=false

diff --git a/java/sca/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/Group2GroupTransformer.java b/java/sca/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/Group2GroupTransformer.java
index cc7b40d06b..95afd45380 100644
--- a/java/sca/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/Group2GroupTransformer.java
+++ b/java/sca/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/Group2GroupTransformer.java
@@ -19,6 +19,8 @@
 
 package org.apache.tuscany.sca.databinding.impl;
 
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
 import org.apache.tuscany.sca.databinding.Mediator;
 import org.apache.tuscany.sca.databinding.PullTransformer;
 import org.apache.tuscany.sca.databinding.TransformationContext;
@@ -38,15 +40,9 @@ public class Group2GroupTransformer extends BaseTransformer<Object, Object> impl
     /**
      * @param wrapperHandler
      */
-    public Group2GroupTransformer() {
+    public Group2GroupTransformer(ExtensionPointRegistry registry) {
         super();
-    }
-
-    /**
-     * @param mediator the mediator to set
-     */
-    public void setMediator(Mediator mediator) {
-        this.mediator = mediator;
+        this.mediator = registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(Mediator.class);
     }
 
     @Override