1 files changed, 111 insertions, 0 deletions
diff --git a/sandbox/old/contrib/persistence/datasource/src/main/java/org/apache/tuscany/persistence/datasource/DSComponentTypeLoader.java b/sandbox/old/contrib/persistence/datasource/src/main/java/org/apache/tuscany/persistence/datasource/DSComponentTypeLoader.java
new file mode 100644
index 0000000000..326c526adf
--- /dev/null
+++ b/sandbox/old/contrib/persistence/datasource/src/main/java/org/apache/tuscany/persistence/datasource/DSComponentTypeLoader.java
@@ -0,0 +1,111 @@
+/*
+ * 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.persistence.datasource;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.Type;
+import java.net.URI;
+import javax.sql.DataSource;
+
+import org.osoa.sca.annotations.Reference;
+
+import org.apache.tuscany.spi.databinding.extension.SimpleTypeMapperExtension;
+import org.apache.tuscany.spi.deployer.DeploymentContext;
+import org.apache.tuscany.spi.extension.ComponentTypeLoaderExtension;
+import org.apache.tuscany.spi.model.TypeInfo;
+import org.apache.tuscany.spi.idl.java.JavaServiceContract;
+import org.apache.tuscany.spi.implementation.java.JavaMappedProperty;
+import org.apache.tuscany.spi.loader.LoaderException;
+import org.apache.tuscany.spi.loader.LoaderRegistry;
+import org.apache.tuscany.spi.model.ComponentType;
+import org.apache.tuscany.spi.model.Property;
+import org.apache.tuscany.spi.model.ReferenceDefinition;
+import org.apache.tuscany.spi.model.Scope;
+import org.apache.tuscany.spi.model.ServiceDefinition;
+
+/**
+ * Loads the component type for a DataSource component. Component type information is currently static, although this
+ * could be changed in the future to allow for configuration parameter checking for specific providers.
+ *
+ * @version $Rev$ $Date$
+ */
+public class DSComponentTypeLoader extends ComponentTypeLoaderExtension<DataSourceImplementation> {
+    private SimpleTypeMapperExtension extension = new SimpleTypeMapperExtension();
+
+    public DSComponentTypeLoader(@Reference LoaderRegistry loaderRegistry) {
+        super(loaderRegistry);
+    }
+
+    protected Class<DataSourceImplementation> getImplementationClass() {
+        return DataSourceImplementation.class;
+    }
+
+    public void load(DataSourceImplementation implementation, DeploymentContext ctx)
+        throws LoaderException {
+        ComponentType<ServiceDefinition, ReferenceDefinition, Property<?>> componentType =
+            new ComponentType<ServiceDefinition, ReferenceDefinition, Property<?>>();
+        componentType.setImplementationScope(Scope.COMPOSITE);
+        JavaServiceContract serviceContract = new JavaServiceContract(DataSource.class);
+        ServiceDefinition service = new ServiceDefinition(URI.create("#DataSource"), serviceContract, false);
+        componentType.add(service);
+        componentType.setInitLevel(1);
+        Class<?> provider;
+        try {
+            provider = implementation.getClassLoader().loadClass(implementation.getProviderName());
+        } catch (ClassNotFoundException e) {
+            throw new LoaderException(e);
+        }
+        introspectProperties(componentType, provider);
+        implementation.setComponentType(componentType);
+    }
+
+    /**
+     * Creates properties by introspecting the provider class an d including all JavaBean setters that take a simple
+     * type parameter
+     *
+     * @param componentType
+     * @param provider
+     * @throws AmbiguousPropertyException
+     */
+    @SuppressWarnings("unchecked")
+    private void introspectProperties(ComponentType<ServiceDefinition, ReferenceDefinition, Property<?>> componentType,
+                                      Class<?> provider) throws AmbiguousPropertyException {
+
+        Method[] methods = provider.getMethods();
+        for (Method method : methods) {
+            String name = method.getName();
+            if (method.getParameterTypes().length == 1 && name.startsWith("set")) {
+                String propName = Character.toLowerCase(name.charAt(3)) + name.substring(4);
+                Class<Type> type = (Class<Type>) method.getParameterTypes()[0];
+                TypeInfo info = extension.getXMLType(type);
+                if (info != null) {
+                    // only include methods as properties that take simple type parameters
+                    if (componentType.getProperties().containsKey(propName)) {
+                        throw new AmbiguousPropertyException(propName);
+                    }
+                    JavaMappedProperty<Type> property =
+                        new JavaMappedProperty<Type>(propName, info.getQName(), type);
+                    property.setMember(method);
+                    componentType.add(property);
+                }
+            }
+        }
+    }
+
+}