1 files changed, 82 insertions, 0 deletions
diff --git a/sandbox/ant/tuscany-container-rhino/src/main/java/org/apache/tuscany/container/rhino/rhino/RhinoScriptInstance.java b/sandbox/ant/tuscany-container-rhino/src/main/java/org/apache/tuscany/container/rhino/rhino/RhinoScriptInstance.java
new file mode 100644
index 0000000000..8f22ae30f2
--- /dev/null
+++ b/sandbox/ant/tuscany-container-rhino/src/main/java/org/apache/tuscany/container/rhino/rhino/RhinoScriptInstance.java
@@ -0,0 +1,82 @@
+package org.apache.tuscany.container.rhino.rhino;
+
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+import org.mozilla.javascript.Context;
+import org.mozilla.javascript.Function;
+import org.mozilla.javascript.Scriptable;
+import org.mozilla.javascript.UniqueTag;
+
+/**
+ * An invokeable instance of a JavaScript script.
+ */
+public class RhinoScriptInstance {
+
+    private Scriptable scriptScope;
+
+    private Scriptable instanceScope;
+
+    private Map<String, Class> responseClasses;
+
+    public RhinoScriptInstance(Scriptable scriptScope, Scriptable instanceScope, Map<String, Object> context, Map<String, Class> responseClasses) {
+        this.scriptScope = scriptScope;
+        this.instanceScope = instanceScope;
+        this.responseClasses = responseClasses;
+        if (this.responseClasses == null) {
+            this.responseClasses = new HashMap<String, Class>();
+        }
+        addContexts(instanceScope, context);
+    }
+
+    public Object invokeFunction(String functionName, Object[] args) {
+        RhinoFunctionInvoker invoker = createRhinoFunctionInvoker(functionName);
+        return invoker.invoke(args);
+    }
+
+    public RhinoFunctionInvoker createRhinoFunctionInvoker(String functionName) {
+        Function function = getFunction(functionName);
+        Class responseClass = responseClasses.get(functionName);
+        RhinoFunctionInvoker invoker = new RhinoFunctionInvoker(instanceScope, function, responseClass);
+        return invoker;
+    }
+
+    /**
+     * Add the context to the scope. This will make the objects available to a script by using the name it was added with.
+     */
+    protected void addContexts(Scriptable scope, Map contexts) {
+        if (contexts != null) {
+            Context.enter();
+            try {
+                for (Iterator i = contexts.keySet().iterator(); i.hasNext();) {
+                    String name = (String) i.next();
+                    Object value = contexts.get(name);
+                    if (value != null) {
+                        scope.put(name, scope, Context.toObject(value, scope));
+                    }
+                }
+            } finally {
+                Context.exit();
+            }
+        }
+    }
+
+    /**
+     * Get the Rhino Function object for the named script function
+     */
+    protected Function getFunction(String functionName) {
+
+        Object handleObj = scriptScope.get(functionName, instanceScope);
+        if (UniqueTag.NOT_FOUND.equals(handleObj)) {
+            // Bit of a hack so E4X scripts don't need to define a function for every operation 
+            handleObj = scriptScope.get("process", instanceScope);
+        }
+        if (!(handleObj instanceof Function)) {
+            throw new RuntimeException("script function '" + functionName + "' is undefined or not a function");
+        }
+
+        return (Function) handleObj;
+    }
+
+}