1 files changed, 168 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-M1-final/java/sca/containers/container.rhino/src/main/java/org/apache/tuscany/container/rhino/loader/JavaScriptImplementationLoader.java b/sca-java-1.x/tags/java-M1-final/java/sca/containers/container.rhino/src/main/java/org/apache/tuscany/container/rhino/loader/JavaScriptImplementationLoader.java
new file mode 100644
index 0000000000..e28776049c
--- /dev/null
+++ b/sca-java-1.x/tags/java-M1-final/java/sca/containers/container.rhino/src/main/java/org/apache/tuscany/container/rhino/loader/JavaScriptImplementationLoader.java
@@ -0,0 +1,168 @@
+/**
+ *
+ * Copyright 2005 The Apache Software Foundation
+ *
+ *  Licensed 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.container.rhino.loader;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+
+import javax.xml.namespace.QName;
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+
+import org.apache.tuscany.common.resource.ResourceLoader;
+import org.apache.tuscany.container.rhino.assembly.JavaScriptImplementation;
+import org.apache.tuscany.core.config.ConfigurationLoadException;
+import org.apache.tuscany.core.config.InvalidRootElementException;
+import org.apache.tuscany.core.config.MissingResourceException;
+import org.apache.tuscany.core.config.SidefileLoadException;
+import org.apache.tuscany.core.loader.LoaderContext;
+import org.apache.tuscany.core.loader.StAXElementLoader;
+import org.apache.tuscany.core.loader.StAXLoaderRegistry;
+import org.apache.tuscany.core.loader.assembly.AssemblyConstants;
+import org.apache.tuscany.core.system.annotation.Autowire;
+import org.apache.tuscany.model.assembly.ComponentType;
+import org.osoa.sca.annotations.Destroy;
+import org.osoa.sca.annotations.Init;
+import org.osoa.sca.annotations.Scope;
+
+/**
+ * @version $Rev$ $Date$
+ */
+@Scope("MODULE")
+public class JavaScriptImplementationLoader implements StAXElementLoader<JavaScriptImplementation> {
+
+    public static final QName IMPLEMENTATION_JS = new QName("http://org.apache.tuscany/xmlns/js/0.9", "implementation.js");
+
+    protected StAXLoaderRegistry registry;
+
+    private XMLInputFactory xmlFactory;
+
+    public JavaScriptImplementationLoader() {
+        // todo make this a reference to a system service
+        xmlFactory = XMLInputFactory.newInstance();
+    }
+
+    @Autowire
+    public void setRegistry(StAXLoaderRegistry registry) {
+        this.registry = registry;
+    }
+
+    @Init(eager = true)
+    public void start() {
+        registry.registerLoader(IMPLEMENTATION_JS, this);
+    }
+
+    @Destroy
+    public void stop() {
+        registry.unregisterLoader(IMPLEMENTATION_JS, this);
+    }
+
+    public JavaScriptImplementation load(XMLStreamReader reader, LoaderContext loaderContext) throws XMLStreamException, ConfigurationLoadException {
+        String scriptFile = reader.getAttributeValue(null, "scriptFile");
+        String script = loadScript(scriptFile, loaderContext.getResourceLoader());
+        ComponentType componentType = loadComponentType(scriptFile, loaderContext);
+
+        JavaScriptImplementation jsImpl = new JavaScriptImplementation();
+        jsImpl.setComponentType(componentType);
+        jsImpl.setScriptFile(scriptFile);
+        jsImpl.setScript(script);
+        jsImpl.setResourceLoader(loaderContext.getResourceLoader());
+        jsImpl.setTypeHelper(registry.getContext().getTypeHelper());
+        return jsImpl;
+    }
+
+    protected String loadScript(String scriptFile, ResourceLoader resourceLoader) throws ConfigurationLoadException {
+        URL url = resourceLoader.getResource(scriptFile);
+        if (url == null) {
+            throw new ConfigurationLoadException(scriptFile);
+        }
+        InputStream inputStream;
+        try {
+            inputStream = url.openStream();
+        } catch (IOException e) {
+            throw new ConfigurationLoadException(scriptFile, e);
+        }
+        try {
+            StringBuilder sb = new StringBuilder(1024);
+            int n;
+            while ((n = inputStream.read()) != -1) {
+                sb.append((char) n);
+            }
+            return sb.toString();
+        } catch (IOException e) {
+            throw new ConfigurationLoadException(scriptFile, e);
+        } finally {
+            try {
+                inputStream.close();
+            } catch (IOException e) {
+                // ignore
+            }
+        }
+    }
+
+    protected ComponentType loadComponentType(String scriptFile, LoaderContext loaderContext) throws SidefileLoadException, MissingResourceException{
+        String sidefile = scriptFile.substring(0, scriptFile.lastIndexOf('.')) + ".componentType";
+        URL componentTypeFile = loaderContext.getResourceLoader().getResource(sidefile);
+        if (componentTypeFile == null) {
+            throw new MissingResourceException(sidefile);
+        }
+
+        try {
+            XMLStreamReader reader;
+            InputStream is;
+                is = componentTypeFile.openStream();
+            try {
+                reader = xmlFactory.createXMLStreamReader(is);
+                try {
+                    reader.nextTag();
+                    if (!AssemblyConstants.COMPONENT_TYPE.equals(reader.getName())) {
+                        InvalidRootElementException e = new InvalidRootElementException(AssemblyConstants.COMPONENT_TYPE, reader.getName());
+                        e.setResourceURI(componentTypeFile.toString());
+                        throw e;
+                    }
+                    return (ComponentType) registry.load(reader, loaderContext);
+                } finally {
+                    try {
+                        reader.close();
+                    } catch (XMLStreamException e) {
+                        // ignore
+                    }
+                }
+            } finally {
+                try {
+                    is.close();
+                } catch (IOException e) {
+                    // ignore
+                }
+            }
+        } catch (IOException e) {
+            SidefileLoadException sfe = new SidefileLoadException(e.getMessage());
+            sfe.setResourceURI(componentTypeFile.toString());
+            throw sfe;
+        } catch (XMLStreamException e) {
+            SidefileLoadException sfe = new SidefileLoadException(e.getMessage());
+            sfe.setResourceURI(componentTypeFile.toString());
+            throw sfe;
+        } catch (ConfigurationLoadException e) {
+            SidefileLoadException sfe = new SidefileLoadException(e.getMessage());
+            sfe.setResourceURI(componentTypeFile.toString());
+            throw sfe;
+        }
+    }
+}