1 files changed, 0 insertions, 321 deletions
diff --git a/java/sca/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DefaultTransformerExtensionPoint.java b/java/sca/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DefaultTransformerExtensionPoint.java
deleted file mode 100644
index 39889b1e97..0000000000
--- a/java/sca/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DefaultTransformerExtensionPoint.java
+++ /dev/null
@@ -1,321 +0,0 @@
-/*
- * 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.databinding;
-
-import java.io.IOException;
-import java.lang.reflect.Constructor;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.List;
-import java.util.Map;
-import java.util.logging.Level;
-import java.util.logging.Logger;
-
-import org.apache.tuscany.sca.core.ExtensionPointRegistry;
-import org.apache.tuscany.sca.databinding.impl.DirectedGraph;
-import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
-import org.apache.tuscany.sca.extensibility.ServiceDiscovery;
-
-/**
- * @version $Rev$ $Date$
- */
-public class DefaultTransformerExtensionPoint implements TransformerExtensionPoint {
-    private static final Logger logger = Logger.getLogger(DefaultTransformerExtensionPoint.class.getName());
-    private boolean loadedTransformers;
-
-    private ExtensionPointRegistry registry;
-    private final DirectedGraph<Object, Transformer> graph = new DirectedGraph<Object, Transformer>();
-
-    public DefaultTransformerExtensionPoint(ExtensionPointRegistry registry) {
-        this.registry = registry;
-    }
-
-    public void addTransformer(String sourceType, String resultType, int weight, Transformer transformer, boolean publicTransformer) {
-        if (logger.isLoggable(Level.FINE)) {
-            String className = transformer.getClass().getName();
-            boolean lazy = false;
-            boolean pull = (transformer instanceof PullTransformer);
-            if (transformer instanceof LazyPullTransformer) {
-                className = ((LazyPullTransformer)transformer).transformerDeclaration.getClassName();
-                lazy = true;
-            }
-            if (transformer instanceof LazyPushTransformer) {
-                className = ((LazyPushTransformer)transformer).transformerDeclaration.getClassName();
-                lazy = true;
-            }
-
-            logger.fine("Adding transformer: " + className
-                + ";source="
-                + sourceType
-                + ",target="
-                + resultType
-                + ",weight="
-                + weight
-                + ",type="
-                + (pull ? "pull" : "push")
-                + ",lazy="
-                + lazy);
-        }
-        graph.addEdge(sourceType, resultType, transformer, weight, publicTransformer);
-    }
-
-    public void addTransformer(Transformer transformer, boolean publicTransformer) {
-        addTransformer(transformer.getSourceDataBinding(),
-                       transformer.getTargetDataBinding(),
-                       transformer.getWeight(),
-                       transformer, publicTransformer);
-    }
-
-    public boolean removeTransformer(String sourceType, String resultType) {
-        return graph.removeEdge(sourceType, resultType);
-    }
-
-    public Transformer getTransformer(String sourceType, String resultType) {
-        loadTransformers();
-
-        DirectedGraph<Object, Transformer>.Edge edge = graph.getEdge(sourceType, resultType);
-        return (edge == null) ? null : edge.getValue();
-    }
-
-    /**
-     * Dynamically load transformers registered under META-INF/services.
-     *
-     */
-    private synchronized void loadTransformers() {
-        if (loadedTransformers) {
-            return;
-        }
-        loadedTransformers = true;
-        loadTransformers(PullTransformer.class);
-        loadTransformers(PushTransformer.class);
-
-    }
-
-    /**
-     * Dynamically load transformers registered under META-INF/services.
-     *
-     * @param transformerClass
-     */
-    private synchronized void loadTransformers(Class<?> transformerClass) {
-
-        // Get the transformer service declarations
-        Collection<ServiceDeclaration> transformerDeclarations;
-
-        try {
-            transformerDeclarations = registry.getServiceDiscovery().getServiceDeclarations(transformerClass.getName());
-
-        } catch (IOException e) {
-            throw new IllegalStateException(e);
-        }
-
-        // Load transformers
-        for (ServiceDeclaration transformerDeclaration : transformerDeclarations) {
-            Map<String, String> attributes = transformerDeclaration.getAttributes();
-
-            String source = attributes.get("source");
-            String target = attributes.get("target");
-            int weight = Integer.valueOf(attributes.get("weight"));
-            String b = attributes.get("public");
-            boolean pub = true;
-            if (b != null) {
-                pub = Boolean.valueOf(b);
-            }
-
-            // Create a transformer wrapper and register it
-            Transformer transformer;
-            if (transformerClass == PullTransformer.class) {
-                transformer = new LazyPullTransformer(source, target, weight, transformerDeclaration);
-            } else {
-                transformer = new LazyPushTransformer(source, target, weight, transformerDeclaration);
-            }
-            addTransformer(transformer, pub);
-        }
-    }
-
-    /**
-     * A transformer facade allowing transformers to be lazily loaded
-     * and initialized.
-     */
-    private class LazyPullTransformer implements PullTransformer<Object, Object> {
-
-        private String source;
-        private String target;
-        private int weight;
-        private ServiceDeclaration transformerDeclaration;
-        private PullTransformer<Object, Object> transformer;
-
-        public LazyPullTransformer(String source, String target, int weight, ServiceDeclaration transformerDeclaration) {
-            this.source = source;
-            this.target = target;
-            this.weight = weight;
-            this.transformerDeclaration = transformerDeclaration;
-        }
-
-        /**
-         * Load and instantiate the transformer class.
-         *
-         * @return The transformer.
-         */
-        @SuppressWarnings("unchecked")
-        private PullTransformer<Object, Object> getTransformer() {
-            if (transformer == null) {
-                try {
-                    Class<PullTransformer<Object, Object>> transformerClass =
-                        (Class<PullTransformer<Object, Object>>)transformerDeclaration.loadClass();
-                    try {
-                        Constructor<PullTransformer<Object, Object>> constructor = transformerClass.getConstructor();
-                        transformer = constructor.newInstance();
-                    } catch (NoSuchMethodException e) {
-                        Constructor<PullTransformer<Object, Object>> constructor =
-                            transformerClass.getConstructor(ExtensionPointRegistry.class);
-                        transformer = constructor.newInstance(registry);
-                    }
-                } catch (Exception e) {
-                    throw new IllegalStateException(e);
-                }
-            }
-            return transformer;
-        }
-
-        public String getSourceDataBinding() {
-            return source;
-        }
-
-        public String getTargetDataBinding() {
-            return target;
-        }
-
-        public int getWeight() {
-            return weight;
-        }
-
-        public Object transform(Object source, TransformationContext context) {
-            return getTransformer().transform(source, context);
-        }
-
-        @Override
-        public String toString() {
-            StringBuffer sb = new StringBuffer(super.toString());
-            sb.append(";className=").append(transformerDeclaration.getClassName());
-            return sb.toString();
-        }
-    }
-
-    /**
-     * A transformer facade allowing transformers to be lazily loaded
-     * and initialized.
-     */
-    private class LazyPushTransformer implements PushTransformer<Object, Object> {
-
-        private String source;
-        private String target;
-        private int weight;
-        private ServiceDeclaration transformerDeclaration;
-        private PushTransformer<Object, Object> transformer;
-
-        public LazyPushTransformer(String source, String target, int weight, ServiceDeclaration transformerDeclaration) {
-            this.source = source;
-            this.target = target;
-            this.weight = weight;
-            this.transformerDeclaration = transformerDeclaration;
-        }
-
-        /**
-         * Load and instantiate the transformer class.
-         *
-         * @return The transformer.
-         */
-        @SuppressWarnings("unchecked")
-        private PushTransformer<Object, Object> getTransformer() {
-            if (transformer == null) {
-                try {
-                    Class<PushTransformer<Object, Object>> transformerClass =
-                        (Class<PushTransformer<Object, Object>>)transformerDeclaration.loadClass();
-                    try {
-                        Constructor<PushTransformer<Object, Object>> constructor = transformerClass.getConstructor();
-                        transformer = constructor.newInstance();
-                    } catch (NoSuchMethodException e) {
-                        Constructor<PushTransformer<Object, Object>> constructor =
-                            transformerClass.getConstructor(ExtensionPointRegistry.class);
-                        transformer = constructor.newInstance(registry);
-                    }
-                } catch (Exception e) {
-                    throw new IllegalStateException(e);
-                }
-            }
-            return transformer;
-        }
-
-        public String getSourceDataBinding() {
-            return source;
-        }
-
-        public String getTargetDataBinding() {
-            return target;
-        }
-
-        public int getWeight() {
-            return weight;
-        }
-
-        public void transform(Object source, Object sink, TransformationContext context) {
-            getTransformer().transform(source, sink, context);
-        }
-
-        @Override
-        public String toString() {
-            StringBuffer sb = new StringBuffer(super.toString());
-            sb.append(";className=").append(transformerDeclaration.getClassName());
-            return sb.toString();
-        }
-    }
-
-    //FIXME The following methods should be on a different class from
-    // extension point
-
-    public List<Transformer> getTransformerChain(String sourceType, String resultType) {
-        loadTransformers();
-
-        String source = sourceType;
-        String result = resultType;
-        List<Transformer> transformers = new ArrayList<Transformer>();
-        // First check if there is a direct path, if yes, use it regardless of the weight
-        DirectedGraph<Object, Transformer>.Edge link = graph.getEdge(sourceType, resultType);
-        if (link != null) {
-            transformers.add(link.getValue());
-        } else {
-            DirectedGraph<Object, Transformer>.Path path = graph.getShortestPath(source, result);
-            if (path == null) {
-                return null;
-            }
-            for (DirectedGraph<Object, Transformer>.Edge edge : path.getEdges()) {
-                transformers.add(edge.getValue());
-            }
-        }
-        return transformers;
-    }
-
-    @Override
-    public String toString() {
-        loadTransformers();
-
-        return graph.toString();
-    }
-
-}