1 files changed, 166 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-integration/sca/kernel/spi/src/main/java/org/apache/tuscany/spi/databinding/extension/DataBindingExtension.java b/sca-java-1.x/branches/sca-java-integration/sca/kernel/spi/src/main/java/org/apache/tuscany/spi/databinding/extension/DataBindingExtension.java
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+++ b/sca-java-1.x/branches/sca-java-integration/sca/kernel/spi/src/main/java/org/apache/tuscany/spi/databinding/extension/DataBindingExtension.java
@@ -0,0 +1,166 @@
+/*
+ * 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.spi.databinding.extension;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+
+import org.apache.tuscany.spi.annotation.Autowire;
+import org.apache.tuscany.spi.databinding.DataBinding;
+import org.apache.tuscany.spi.databinding.DataBindingRegistry;
+import org.apache.tuscany.spi.databinding.ExceptionHandler;
+import org.apache.tuscany.spi.databinding.SimpleTypeMapper;
+import org.apache.tuscany.spi.databinding.WrapperHandler;
+import org.apache.tuscany.spi.model.DataType;
+import org.osoa.sca.annotations.EagerInit;
+import org.osoa.sca.annotations.Init;
+import org.osoa.sca.annotations.Scope;
+import org.osoa.sca.annotations.Service;
+
+/**
+ * Base Implementation of DataBinding
+ * 
+ * @version $Rev$ $Date$
+ */
+@Service(DataBinding.class)
+@Scope("COMPOSITE")
+@EagerInit
+public abstract class DataBindingExtension implements DataBinding {
+
+    protected DataBindingRegistry registry;
+
+    protected Class<?> baseType;
+
+    protected String name;
+    protected String[] aliases; 
+
+    /**
+     * Create a databinding with the base java type whose name will be used as
+     * the name of the databinding
+     * 
+     * @param baseType The base java class or interface representing the
+     *            databinding, for example, org.w3c.dom.Node
+     */
+    protected DataBindingExtension(Class<?> baseType) {
+        this(baseType.getName(), null, baseType);
+    }
+
+    /**
+     * Create a databinding with the name and base java type
+     * 
+     * @param name The name of the databinding
+     * @param baseType The base java class or interface representing the
+     *            databinding, for example, org.w3c.dom.Node
+     */
+    protected DataBindingExtension(String name, Class<?> baseType) {
+        this(name, null, baseType);
+    }
+    
+    /**
+     * Create a databinding with the name and base java type
+     * 
+     * @param name The name of the databinding
+     * @param aliases The aliases of the databinding
+     * @param baseType The base java class or interface representing the
+     *            databinding, for example, org.w3c.dom.Node
+     */
+    protected DataBindingExtension(String name, String[] aliases, Class<?> baseType) {
+        this.name = name;
+        this.baseType = baseType;
+        this.aliases = aliases;
+    }    
+
+    @Autowire
+    public void setDataBindingRegistry(DataBindingRegistry registry) {
+        this.registry = registry;
+    }
+
+    @Init
+    public void init() {
+        registry.register(this);
+    }
+
+    public boolean introspect(DataType type, Annotation[] annotations) {
+        assert type != null;
+        Type physical = type.getPhysical();
+        if (physical instanceof ParameterizedType) {
+            physical = ((ParameterizedType)physical).getRawType();
+        }
+        if (physical instanceof Class) {
+            Class cls = (Class)physical;
+            if (baseType != null && baseType.isAssignableFrom(cls)) {
+                type.setDataBinding(getName());
+                type.setLogical(baseType);
+                return true;
+            }
+        }
+        return false;
+    }
+    
+    protected static org.apache.tuscany.api.annotation.DataType getDataTypeAnnotation(Annotation[] annotations) {
+        for (Annotation a : annotations) {
+            if (a.annotationType() == org.apache.tuscany.api.annotation.DataType.class) {
+                return (org.apache.tuscany.api.annotation.DataType) a;
+            }
+        }
+        return null;
+    }
+
+    public DataType introspect(Object value) {
+        if (value == null) {
+            return null;
+        } else {
+            DataType<Class> dataType = new DataType<Class>(value.getClass(), value.getClass());
+            if (introspect(dataType, null)) {
+                return dataType;
+            } else {
+                return null;
+            }
+        }
+    }
+
+    public final String getName() {
+        return name;
+    }
+
+    /**
+     * @see org.apache.tuscany.spi.databinding.DataBinding#getWrapperHandler()
+     */
+    public WrapperHandler getWrapperHandler() {
+        return null;
+    }
+
+    public ExceptionHandler getExceptionHandler() {
+        return null;
+    }
+
+    public Object copy(Object object) {
+        return object;
+    }
+
+    public SimpleTypeMapper getSimpleTypeMapper() {
+        return new SimpleTypeMapperExtension();
+    }
+
+    public String[] getAliases() {
+        return aliases;
+    }
+
+}