1 files changed, 123 insertions, 0 deletions
diff --git a/sandbox/old/contrib/runtime-webapp/webapp-host/src/main/java/org/apache/tuscany/runtime/webapp/implementation/webapp/WebappLoader.java b/sandbox/old/contrib/runtime-webapp/webapp-host/src/main/java/org/apache/tuscany/runtime/webapp/implementation/webapp/WebappLoader.java
new file mode 100644
index 0000000000..7794979a03
--- /dev/null
+++ b/sandbox/old/contrib/runtime-webapp/webapp-host/src/main/java/org/apache/tuscany/runtime/webapp/implementation/webapp/WebappLoader.java
@@ -0,0 +1,123 @@
+/*
+ * 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.runtime.webapp.implementation.webapp;
+
+import java.net.URI;
+import java.net.URISyntaxException;
+import javax.xml.namespace.QName;
+import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
+import static javax.xml.stream.XMLStreamConstants.START_ELEMENT;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+
+import org.osoa.sca.annotations.Reference;
+
+import org.apache.tuscany.spi.deployer.DeploymentContext;
+import org.apache.tuscany.spi.extension.LoaderExtension;
+import org.apache.tuscany.spi.idl.InvalidServiceContractException;
+import org.apache.tuscany.spi.idl.java.InterfaceJavaIntrospector;
+import org.apache.tuscany.spi.implementation.java.ProcessingException;
+import org.apache.tuscany.spi.loader.IllegalSCDLNameException;
+import org.apache.tuscany.spi.loader.LoaderException;
+import org.apache.tuscany.spi.loader.LoaderRegistry;
+import org.apache.tuscany.spi.loader.MissingResourceException;
+import org.apache.tuscany.spi.loader.UnrecognizedElementException;
+import org.apache.tuscany.spi.model.ModelObject;
+import org.apache.tuscany.spi.model.ReferenceDefinition;
+import org.apache.tuscany.spi.model.ServiceContract;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class WebappLoader extends LoaderExtension<WebappImplementation> {
+    private static final QName WEBAPP = new QName("http://tuscany.apache.org/xmlns/sca/2.0-alpha", "webapp");
+
+    private final InterfaceJavaIntrospector introspector;
+
+    public WebappLoader(@Reference LoaderRegistry registry,
+                        @Reference InterfaceJavaIntrospector introspector) {
+        super(registry);
+        this.introspector = introspector;
+    }
+
+    public QName getXMLType() {
+        return WEBAPP;
+    }
+
+    public WebappImplementation load(
+        ModelObject object,
+        XMLStreamReader reader,
+        DeploymentContext deploymentContext)
+        throws XMLStreamException, LoaderException {
+
+        WebappComponentType componentType = new WebappComponentType();
+        WebappImplementation impl = new WebappImplementation();
+        impl.setComponentType(componentType);
+
+        while (true) {
+            switch (reader.next()) {
+                case START_ELEMENT:
+                    QName qname = reader.getName();
+                    if ("reference".equals(qname.getLocalPart())) {
+                        defineReference(componentType, reader, deploymentContext);
+                    } else {
+                        throw new UnrecognizedElementException(qname);
+                    }
+                    reader.next();
+                    break;
+                case END_ELEMENT:
+                    return impl;
+            }
+        }
+    }
+
+    protected void defineReference(WebappComponentType componentType,
+                                   XMLStreamReader reader,
+                                   DeploymentContext context) throws LoaderException {
+        String name = reader.getAttributeValue(null, "name");
+        URI referenceURI;
+        try {
+            referenceURI = new URI('#' + name);
+        } catch (URISyntaxException e) {
+            throw new IllegalSCDLNameException(e);
+        }
+
+        String className = reader.getAttributeValue(null, "interface");
+        if (className == null) {
+            className = reader.getAttributeValue(null, "class");
+        }
+
+        Class<?> referenceType;
+        try {
+            referenceType = context.getClassLoader().loadClass(className);
+        } catch (ClassNotFoundException e) {
+            throw new MissingResourceException(className, e);
+        }
+
+        ServiceContract serviceContract;
+        try {
+            serviceContract = introspector.introspect(referenceType);
+        } catch (InvalidServiceContractException e) {
+            throw new ProcessingException("Invalid service contract", name, e);
+        }
+
+        ReferenceDefinition definition = new ReferenceDefinition(referenceURI, serviceContract);
+        componentType.add(definition);
+    }
+}