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Diffstat (limited to 'tags/java-stable-20060304/sca/container.js/src/main/java/org/apache/tuscany/container/js/rhino/RhinoScript.java')
-rw-r--r--tags/java-stable-20060304/sca/container.js/src/main/java/org/apache/tuscany/container/js/rhino/RhinoScript.java298
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diff --git a/tags/java-stable-20060304/sca/container.js/src/main/java/org/apache/tuscany/container/js/rhino/RhinoScript.java b/tags/java-stable-20060304/sca/container.js/src/main/java/org/apache/tuscany/container/js/rhino/RhinoScript.java
deleted file mode 100644
index 4ddee12fe4..0000000000
--- a/tags/java-stable-20060304/sca/container.js/src/main/java/org/apache/tuscany/container/js/rhino/RhinoScript.java
+++ /dev/null
@@ -1,298 +0,0 @@
-/**
- *
- * Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
- *
- * 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.js.rhino;
-
-import java.util.Iterator;
-import java.util.Map;
-
-import org.mozilla.javascript.Context;
-import org.mozilla.javascript.ContextFactory;
-import org.mozilla.javascript.Function;
-import org.mozilla.javascript.Script;
-import org.mozilla.javascript.Scriptable;
-import org.mozilla.javascript.Wrapper;
-
-/**
- * Represents, and is responsible for dispatching to, a JavaScript artifact in Rhino
- */
-public class RhinoScript {
-
- private String scriptName;
-
- private String script;
-
- private Scriptable scriptScope;
-
- private Scriptable sharedScope;
-
- /*
- * Enable dynamic scopes so a script can be used concurrently with a global shared scope and individual execution
- * scopes. See http://www.mozilla.org/rhino/scopes.html TODO: need to review how ths fits in with Tuscany scopes
- */
- private static class MyFactory extends ContextFactory {
- protected boolean hasFeature(Context cx, int featureIndex) {
- if (featureIndex == Context.FEATURE_DYNAMIC_SCOPE) {
- return true;
- }
- return super.hasFeature(cx, featureIndex);
- }
- }
-
- static {
- ContextFactory.initGlobal(new MyFactory());
- }
-
- /**
- * Create a new RhinoInvoker.
- *
- * @param scriptName the name of the script. Can be anything, only used in messages to identify the script
- * @param script the complete script
- */
- public RhinoScript(String scriptName, String script) {
- this(scriptName, script, (Map) null);
- }
-
- /**
- * Create a new RhinoInvoker.
- *
- * @param scriptName the name of the script. Can be anything, only used in messages to identify the script
- * @param script the complete script
- * @param context name-value pairs that are added in to the scope where the script is compiled. May be null. The
- * value objects are made available to the script by using a variable with the name.
- */
- public RhinoScript(String scriptName, String script, Map context) {
- this.scriptName = scriptName;
- this.script = script;
- initScriptScope(scriptName, script, context);
- initSharedScope();
- }
-
- /**
- * Construct a RhinoInvoker from another RhinoInvoker object. This uses the original script scope so the script
- * doesn't need to be recompiled.
- */
- protected RhinoScript(String scriptName, String script, Scriptable scriptScope) {
- this.scriptName = scriptName;
- this.script = script;
- this.scriptScope = scriptScope;
- initSharedScope();
- }
-
- /**
- * Invoke a script function
- *
- * @param functionName the name of the function to invoke.
- * @param arg arguments to the function, may be a single object or an array of objects.
- * @return the function return value.
- */
- public Object invoke(String functionName, Object args) {
- return invoke(functionName, args, null, null);
- }
-
- /**
- * Invoke a script function
- *
- * @param functionName the name of the function to invoke.
- * @param arg arguments to the function, may be a single object or an array of objects.
- * @param contexts a Map of name-value pairs which are added to the invocation Scope to enable the script to access
- * the values by using the variable in name.
- * @return the function return value.
- */
- public Object invoke(String functionName, Object args, Map contexts) {
- return invoke(functionName, args, null, contexts);
- }
-
- /**
- * Invoke a script function
- *
- * @param functionName the name of the function to invoke.
- * @param arg arguments to the function, may be a single object or an array of objects.
- * @param responseClass the desired class of the response object.
- * @param contexts a Map of name-value pairs which are added to the invocation Scope to enable the script to access
- * the values by using the variable in name.
- * @return the function return value.
- */
- public Object invoke(String functionName, Object arg, Class responseClass, Map contexts) {
- Context cx = Context.enter();
- try {
- Function function = getFunction(scriptScope, functionName);
- Scriptable invocationScope = getInvocationScope(cx, contexts);
- Object[] args = processArgs(arg, invocationScope);
- Object jsResponse = function.call(cx, invocationScope, invocationScope, args);
- Object response = processResponse(jsResponse, responseClass);
- return response;
- } finally {
- Context.exit();
- }
- }
-
- /**
- * Turn args to JS objects and convert any OMElement to E4X XML
- */
- protected Object[] processArgs(Object arg, Scriptable scope) {
- // TODO: implement pluggable way to transform objects (eg SDO or AXIOM) to E4X XML objects
- // if (arg instanceof OMElement) {
- // try {
- // arg = E4XAXIOMUtils.toScriptableObject((OMElement) arg, scope);
- // } catch (XmlException e) {
- // throw new RuntimeException(e);
- // }
- // } else if (arg instanceof MessageContext) {
- // arg = new E4XMessageContext((MessageContext) arg, scope);
- // }
- Object[] args;
- if (arg == null) {
- args = new Object[] { null };
- } else if (arg.getClass().isArray()) {
- args = (Object[]) arg;
- for (int i = 0; i < args.length; i++) {
- args[i] = Context.toObject(args[i], scope);
- }
- } else {
- args = new Object[] { Context.toObject(arg, scope) };
- }
- return args;
- }
-
- /**
- * Unwrap and convert response
- */
- protected Object processResponse(Object response, Class responseClass) {
- // TODO: implement pluggable way to transform E4X XML into specific objects (eg SDO or AXIOM)
- // } else if (response instanceof XMLObject) {
- // response = E4XAXIOMUtils.toOMElement((XMLObject) response);
- if (Context.getUndefinedValue().equals(response)) {
- response = null;
- } else if (response instanceof Wrapper) {
- response = ((Wrapper) response).unwrap();
- } else {
- if (responseClass != null) {
- response = Context.toType(response, responseClass);
- } else {
- response = Context.toType(response, String.class);
- }
- }
- return response;
- }
-
- /**
- * Create a Rhino scope and compile the script into it
- */
- protected void initScriptScope(String fileName, String scriptCode, Map context) {
- Context cx = Context.enter();
- try {
-
- this.scriptScope = cx.initStandardObjects(null, true);
- Script compiledScript = cx.compileString(scriptCode, fileName, 1, null);
- compiledScript.exec(cx, scriptScope);
- addContexts(scriptScope, context);
-
- } finally {
- Context.exit();
- }
- }
-
- /**
- * Initializes the shared scope
- */
- protected void initSharedScope() {
- Context cx = Context.enter();
- try {
-
- this.sharedScope = cx.newObject(scriptScope);
- sharedScope.setPrototype(scriptScope);
- sharedScope.setParentScope(null);
-
- } finally {
- Context.exit();
- }
- }
-
- /**
- * Get a Rhino scope for the function invocation. If the invocation has no context objects then this will use the
- * shared scope otherwise a new scope is created to hold the context objects. Any new variables the executing script
- * might define will go in the sharedScope. This new scope is just to hold the invocation specific context objects.
- */
- protected Scriptable getInvocationScope(Context cx, Map contexts) {
-
- Scriptable scope;
- if (contexts == null || contexts.size() == 0) {
- scope = sharedScope;
- } else {
- scope = cx.newObject(sharedScope);
- scope.setPrototype(sharedScope);
- scope.setParentScope(null);
- addContexts(scope, contexts);
- }
-
- return scope;
- }
-
- /**
- * 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) {
- 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));
- }
- }
- }
- }
-
- /**
- * Get the Rhino Function object for the named script function
- */
- protected Function getFunction(Scriptable scope, String functionName) {
-
- Object handleObj = scope.get(functionName, scope);
-
- if (!(handleObj instanceof Function)) {
- throw new RuntimeException("script function '" + functionName + "' is undefined or not a function in script "
- + scriptName);
- }
-
- return (Function) handleObj;
- }
-
- /**
- * Make a copy of this RhinoScript object. This shares the script scope to avoid the overhead of recompiling the
- * script, and to allow any initialization done by the script to be shared.
- */
- public RhinoScript copy() {
- return new RhinoScript(scriptName, script, scriptScope);
- }
-
- /**
- * Update the scope where the script is complied with new context values
- *
- * @param properties
- */
- public void updateScriptScope(Map context) {
- Context.enter();
- try {
- addContexts(scriptScope, context);
- } finally {
- Context.exit();
- }
- }
-
-} \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-20 20:15:01 +0000