1 files changed, 116 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-stable-20060304/sca/container.js/src/main/java/org/apache/tuscany/container/js/assembly/impl/JavaScriptImplementationImpl.java b/sca-java-1.x/tags/java-stable-20060304/sca/container.js/src/main/java/org/apache/tuscany/container/js/assembly/impl/JavaScriptImplementationImpl.java
new file mode 100644
index 0000000000..c6b58a25c6
--- /dev/null
+++ b/sca-java-1.x/tags/java-stable-20060304/sca/container.js/src/main/java/org/apache/tuscany/container/js/assembly/impl/JavaScriptImplementationImpl.java
@@ -0,0 +1,116 @@
+package org.apache.tuscany.container.js.assembly.impl;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+
+import org.apache.tuscany.common.resource.ResourceLoader;
+import org.apache.tuscany.container.js.assembly.JavaScriptImplementation;
+import org.apache.tuscany.model.assembly.AssemblyModelContext;
+import org.apache.tuscany.model.assembly.ComponentType;
+import org.apache.tuscany.model.assembly.ModelInitException;
+import org.apache.tuscany.model.assembly.impl.ComponentImplementationImpl;
+
+/**
+ * Default implementation of a JavScript component implementation type
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JavaScriptImplementationImpl extends ComponentImplementationImpl implements JavaScriptImplementation {
+
+    private ResourceLoader resourceLoader;
+
+    public JavaScriptImplementationImpl() {
+        super();
+    }
+
+    public ResourceLoader getResourceLoader() {
+        return null;
+    }
+
+    public void initialize(AssemblyModelContext modelContext) throws ModelInitException {
+        if (isInitialized()) {
+            return;
+        }
+        this.resourceLoader = modelContext.getApplicationResourceLoader();
+        if(resourceLoader == null){
+            throw new ModelInitException("No resource loader set on model context");
+        }
+        getScriptFile();
+
+        // Initialize the component type
+        ComponentType componentType = getComponentType();
+        if (componentType == null) {
+            try {
+                componentType = createComponentType(modelContext);
+            } catch (IOException e) {
+                throw new ModelInitException("Error retrieving component type file",e);
+            }
+            setComponentType(componentType);
+        }
+
+        super.initialize(modelContext);
+
+    }
+
+    String script;
+
+    public String getScriptFile() {
+        return script;
+    }
+
+    public void setScriptFile(String fn) {
+        script = fn;
+    }
+
+    private String scriptCode;
+
+    public String getScript() throws ModelInitException {
+        if (scriptCode != null) {
+            return scriptCode;
+        }
+        try {
+            URL url = resourceLoader.getResource(getScriptFile());
+            if (url == null) {
+                ModelInitException ce = new ModelInitException("Script not found");
+                ce.setIdentifier(getScriptFile());
+                throw ce;
+            }
+            InputStream inputStream = url.openStream();
+            try {
+                StringBuffer sb = new StringBuffer();
+                int n = 0;
+                while ((n = inputStream.read()) != -1) {
+                    sb.append((char) n);
+                }
+                scriptCode = sb.toString();
+                return scriptCode;
+            } finally {
+                inputStream.close();
+            }
+        } catch (IOException e) {
+            ModelInitException ce = new ModelInitException("Error reading script file",e);
+            ce.setIdentifier(getScriptFile());
+            throw ce;
+        }
+    }
+
+    /**
+     * Create the component type
+     * 
+     * @param modelContext
+     * @param implementationClass
+     */
+    private ComponentType createComponentType(AssemblyModelContext modelContext) throws IOException{
+        String prefix = script.substring(0,script.lastIndexOf('.'));
+        URL componentTypeFile = resourceLoader.getResource(prefix + ".componentType");
+        if (componentTypeFile != null) {
+            return modelContext.getAssemblyLoader().loadComponentType(componentTypeFile.toString());
+        } else {
+            // TODO we could introspect the JavaScript source
+            return modelContext.getAssemblyFactory().createComponentType();
+        }
+    }
+    
+    
+}