Examples with ScriptContext javax.script.ScriptContext used on opensource projects

Example 36 with ScriptContext

use of javax.script.ScriptContext in project jbpm by kiegroup.

the class JavaScriptingDataTransformer method evaluateExpression.

protected Object evaluateExpression(Object expression, Map<String, Object> parameters) {
    try {
        Object result = null;
        StringWriter writer = new StringWriter();
        ScriptContext context = new SimpleScriptContext();
        for (Map.Entry<String, Object> property : engineProperties.entrySet()) {
            context.setAttribute(property.getKey(), property.getValue(), ScriptContext.ENGINE_SCOPE);
        }
        Bindings bindings = context.getBindings(ScriptContext.ENGINE_SCOPE);
        bindings.putAll(parameters);
        context.setBindings(bindings, ScriptContext.ENGINE_SCOPE);
        context.setWriter(writer);
        if (expression instanceof CompiledScript) {
            logger.debug("About to evaluate compiled expression {} with bindings {} on engine", expression, parameters, scriptEngine);
            result = ((CompiledScript) expression).eval(context);
        } else {
            logger.debug("About to evaluate expression {} with bindings {} on engine", expression, parameters, scriptEngine);
            result = scriptEngine.eval(expression.toString(), context);
        }
        if (result == null) {
            result = writer.toString();
        }
        return result;
    } catch (ScriptException e) {
        throw new RuntimeException("Error when evaluating script", e);
    }
}

Example 37 with ScriptContext

use of javax.script.ScriptContext in project structr by structr.

the class Scripting method evaluateScript.

// ----- private methods -----
private static Object evaluateScript(final ActionContext actionContext, final GraphObject entity, final String engineName, final String script) throws FrameworkException {
    final ScriptEngineManager manager = new ScriptEngineManager();
    final ScriptEngine engine = manager.getEngineByName(engineName);
    if (engine == null) {
        throw new RuntimeException(engineName + " script engine could not be initialized. Check class path.");
    }
    final ScriptContext scriptContext = engine.getContext();
    final Bindings bindings = new StructrScriptBindings(actionContext, entity);
    if (!(engine instanceof RenjinScriptEngine)) {
        scriptContext.setBindings(bindings, ScriptContext.GLOBAL_SCOPE);
    }
    StringWriter output = new StringWriter();
    scriptContext.setWriter(output);
    try {
        engine.eval(script);
        Object extractedValue = output.toString();
        return extractedValue;
    } catch (final ScriptException e) {
        logger.error("Error while processing {} script: {}", engineName, script, e);
    }
    return null;
}

Example 38 with ScriptContext

use of javax.script.ScriptContext in project revapi by revapi.

the class ConfigurationValidator method getJsEngine.

private ScriptEngine getJsEngine(Writer output) throws IOException, ScriptException {
    ScriptEngine ret = null;
    if (jsEngine != null) {
        ret = jsEngine.get();
    }
    if (ret == null) {
        ret = new ScriptEngineManager().getEngineByName("javascript");
        ScriptContext ctx = new SimpleScriptContext();
        Bindings globalScope = ret.createBindings();
        ctx.setBindings(globalScope, ScriptContext.GLOBAL_SCOPE);
        initTv4(ret, globalScope);
        ret.setContext(ctx);
        jsEngine = new WeakReference<>(ret);
    }
    ret.getContext().setWriter(output);
    ret.getContext().setErrorWriter(output);
    return ret;
}

Example 39 with ScriptContext

use of javax.script.ScriptContext in project java8-tutorial by winterbe.

the class Nashorn11 method test7.

private static void test7() throws ScriptException {
    NashornScriptEngine engine = createEngine();
    engine.eval("var foo = 23;");
    ScriptContext defaultContext = engine.getContext();
    Bindings defaultBindings = defaultContext.getBindings(ScriptContext.ENGINE_SCOPE);
    SimpleScriptContext context1 = new SimpleScriptContext();
    context1.setBindings(defaultBindings, ScriptContext.ENGINE_SCOPE);
    SimpleScriptContext context2 = new SimpleScriptContext();
    context2.getBindings(ScriptContext.ENGINE_SCOPE).put("foo", defaultBindings.get("foo"));
    engine.eval("foo = 44;", context1);
    engine.eval("print(foo);", context1);
    engine.eval("print(foo);", context2);
}

Example 40 with ScriptContext

use of javax.script.ScriptContext in project java8-tutorial by winterbe.

the class Nashorn11 method test8.

private static void test8() throws ScriptException {
    NashornScriptEngine engine = createEngine();
    engine.eval("var obj = { foo: 23 };");
    ScriptContext defaultContext = engine.getContext();
    Bindings defaultBindings = defaultContext.getBindings(ScriptContext.ENGINE_SCOPE);
    SimpleScriptContext context1 = new SimpleScriptContext();
    context1.setBindings(defaultBindings, ScriptContext.ENGINE_SCOPE);
    SimpleScriptContext context2 = new SimpleScriptContext();
    context2.getBindings(ScriptContext.ENGINE_SCOPE).put("obj", defaultBindings.get("obj"));
    engine.eval("obj.foo = 44;", context1);
    engine.eval("print(obj.foo);", context1);
    engine.eval("print(obj.foo);", context2);
}