1 files changed, 105 insertions, 0 deletions

diff --git a/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/loader/IncludeLoader.java b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/loader/IncludeLoader.java
new file mode 100644
index 0000000000..e10a93bbc0
--- /dev/null
+++ b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/loader/IncludeLoader.java
@@ -0,0 +1,105 @@
+/*
+ * 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.core.loader;
+
+import java.net.MalformedURLException;
+import java.net.URI;
+import java.net.URL;
+import javax.xml.namespace.QName;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+
+import static org.osoa.sca.Constants.SCA_NS;
+import org.osoa.sca.annotations.Constructor;
+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.loader.LoaderException;
+import org.apache.tuscany.spi.loader.LoaderRegistry;
+import org.apache.tuscany.spi.loader.LoaderUtil;
+import org.apache.tuscany.spi.loader.MissingIncludeException;
+import org.apache.tuscany.spi.loader.MissingResourceException;
+import org.apache.tuscany.spi.model.CompositeComponentType;
+import org.apache.tuscany.spi.model.Include;
+import org.apache.tuscany.spi.model.ModelObject;
+
+import org.apache.tuscany.core.deployer.ChildDeploymentContext;
+
+/**
+ * Loader that handles <include> elements.
+ *
+ * @version $Rev$ $Date$
+ */
+public class IncludeLoader extends LoaderExtension<Include> {
+    private static final QName INCLUDE = new QName(SCA_NS, "include");
+
+    @Constructor
+    public IncludeLoader(@Reference LoaderRegistry registry) {
+        super(registry);
+    }
+
+    public QName getXMLType() {
+        return INCLUDE;
+    }
+
+    public Include load(ModelObject object, XMLStreamReader reader, DeploymentContext deploymentContext)
+        throws XMLStreamException, LoaderException {
+
+        assert INCLUDE.equals(reader.getName());
+        String name = reader.getAttributeValue(null, "name");
+        String scdlLocation = reader.getAttributeValue(null, "scdlLocation");
+        String scdlResource = reader.getAttributeValue(null, "scdlResource");
+        LoaderUtil.skipToEndElement(reader);
+
+        ClassLoader cl = deploymentContext.getClassLoader();
+        URL url;
+        if (scdlLocation != null) {
+            try {
+                url = new URL(deploymentContext.getScdlLocation(), scdlLocation);
+            } catch (MalformedURLException e) {
+                throw new MissingResourceException(scdlLocation, name, e);
+            }
+        } else if (scdlResource != null) {
+            url = cl.getResource(scdlResource);
+            if (url == null) {
+                throw new MissingResourceException(scdlResource, name);
+            }
+        } else {
+            throw new MissingIncludeException("No SCDL location or resource specified", name);
+        }
+
+        // when we include, the componentId remains that of the parent
+        URI componentId = deploymentContext.getComponentId();
+        boolean autowire = deploymentContext.isAutowire();
+        DeploymentContext childContext = new ChildDeploymentContext(deploymentContext, cl, url, componentId, autowire);
+        CompositeComponentType composite;
+        composite = loadFromSidefile(url, childContext);
+
+        Include include = new Include();
+        include.setName(name);
+        include.setScdlLocation(url);
+        include.setIncluded(composite);
+        return include;
+    }
+
+    protected CompositeComponentType loadFromSidefile(URL url, DeploymentContext context) throws LoaderException {
+        return registry.load(null, url, CompositeComponentType.class, context);
+    }
+}