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

Example 56 with Invocable

use of javax.script.Invocable in project ofbiz-framework by apache.

the class ScriptUtil method executeScript.

/**
 * Executes a compiled script and returns the result.
 *
 * @param script Compiled script.
 * @param functionName Optional function or method to invoke.
 * @param scriptContext Script execution context.
 * @return The script result.
 * @throws IllegalArgumentException
 */
public static Object executeScript(CompiledScript script, String functionName, ScriptContext scriptContext, Object[] args) throws ScriptException, NoSuchMethodException {
    Assert.notNull("script", script, "scriptContext", scriptContext);
    Object result = script.eval(scriptContext);
    if (UtilValidate.isNotEmpty(functionName)) {
        if (Debug.verboseOn()) {
            Debug.logVerbose("Invoking function/method " + functionName, module);
        }
        ScriptEngine engine = script.getEngine();
        try {
            Invocable invocableEngine = (Invocable) engine;
            result = invocableEngine.invokeFunction(functionName, args == null ? EMPTY_ARGS : args);
        } catch (ClassCastException e) {
            throw new ScriptException("Script engine " + engine.getClass().getName() + " does not support function/method invocations");
        }
    }
    return result;
}

Example 57 with Invocable

use of javax.script.Invocable in project cas by apereo.

the class ScriptingUtils method executeScriptEngine.

/**
 * Execute groovy script engine t.
 *
 * @param <T>        the type parameter
 * @param scriptFile the script file
 * @param args       the args
 * @param clazz      the clazz
 * @return the t
 */
public static <T> T executeScriptEngine(final String scriptFile, final Object[] args, final Class<T> clazz) {
    try {
        val engineName = getScriptEngineName(scriptFile);
        if (StringUtils.isBlank(engineName)) {
            LOGGER.warn("Script engine name can not be determined for [{}]", engineName);
            return null;
        }
        val engine = new ScriptEngineManager().getEngineByName(engineName);
        val resourceFrom = ResourceUtils.getResourceFrom(scriptFile);
        val theScriptFile = resourceFrom.getFile();
        if (theScriptFile.exists()) {
            LOGGER.debug("Created object instance from class [{}]", theScriptFile.getCanonicalPath());
            try (val reader = Files.newBufferedReader(theScriptFile.toPath(), StandardCharsets.UTF_8)) {
                engine.eval(reader);
            }
            val invocable = (Invocable) engine;
            LOGGER.debug("Executing script's run method, with parameters [{}]", args);
            val result = invocable.invokeFunction("run", args);
            LOGGER.debug("Groovy script result is [{}]", result);
            return getGroovyScriptExecutionResultOrThrow(clazz, result);
        }
        LOGGER.warn("[{}] script [{}] does not exist, or cannot be loaded", StringUtils.capitalize(engineName), scriptFile);
    } catch (final Exception e) {
        LoggingUtils.error(LOGGER, e);
    }
    return null;
}

Example 58 with Invocable

use of javax.script.Invocable in project yyl_example by Relucent.

the class HelloWorld method testUsingJDKClasses.

public static void testUsingJDKClasses(ScriptEngine engine) throws Exception {
    // Packages是脚本语言里的一个全局变量,专用于访问JDK的package
    String js = "function doSwing(t){var f=new Packages.javax.swing.JFrame(t);f.setSize(400,300);f.setVisible(true);}";
    engine.eval(js);
    Invocable inv = (Invocable) engine;
    inv.invokeFunction("doSwing", "Scripting Swing");
}

Example 59 with Invocable

use of javax.script.Invocable in project yyl_example by Relucent.

the class HelloWorld method testScriptInterface.

public static void testScriptInterface(ScriptEngine engine) throws ScriptException {
    String script = "var obj = new Object(); obj.run = function() { println('run method called'); }";
    engine.eval(script);
    Object obj = engine.get("obj");
    Invocable inv = (Invocable) engine;
    Runnable r = inv.getInterface(obj, Runnable.class);
    Thread th = new Thread(r);
    th.start();
}

Example 60 with Invocable

use of javax.script.Invocable in project yyl_example by Relucent.

the class HelloWorld method testInvokeScriptMethod.

public static void testInvokeScriptMethod(ScriptEngine engine) throws Exception {
    String script = "function hello(name) { return 'Hello,' + name;}";
    engine.eval(script);
    Invocable inv = (Invocable) engine;
    String result = (String) inv.invokeFunction("hello", "World!!");
    System.out.println("res:" + result);
}