Example usage for javax.script ScriptEngine eval

List of usage examples for javax.script ScriptEngine eval

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Introduction

In this page you can find the example usage for javax.script ScriptEngine eval.

Prototype

public Object eval(Reader reader) throws ScriptException;

Source Link

Document

Same as eval(String) except that the source of the script is provided as a Reader

Usage

From source file:org.rhq.enterprise.server.plugins.alertCli.CliSender.java

public SenderResult send(Alert alert) {
    SenderResult result = new SenderResult();
    BufferedReader reader = null;
    ScriptEngine engine = null;/*from  w  w w  .  jav a 2 s . c  o m*/
    Subject subjectWithSession = null;
    final SessionManager sessionManager = SessionManager.getInstance();

    try {
        final Config config = getConfig();

        // simulate the login by getting a session ID
        config.subject = sessionManager.put(config.subject, pluginComponent.getScriptTimeout() * 1000);
        subjectWithSession = config.subject;

        result.setSummary(createSummary(config, SUMMARY_TEMPLATE));

        ByteArrayOutputStream scriptOutputStream = new ByteArrayOutputStream();
        PrintWriter scriptOut = new PrintWriter(scriptOutputStream);

        engine = getScriptEngine(alert, scriptOut, config);

        InputStream packageBits = getPackageBits(config.packageId, config.repoId);

        reader = new BufferedReader(new InputStreamReader(packageBits));

        final BufferedReader rdr = reader;

        final ExceptionHolder exceptionHolder = new ExceptionHolder();

        final ScriptEngine e = engine;
        Thread scriptRunner = new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    e.eval(rdr);
                } catch (ScriptException e) {
                    exceptionHolder.scriptException = e;
                } catch (Throwable e) {
                    exceptionHolder.throwable = e;
                }
            }
        }, "Script Runner for alert " + alert);
        scriptRunner.setDaemon(true);
        scriptRunner.start();

        if (pluginComponent.getScriptTimeout() <= 0) {
            scriptRunner.join();
        } else {
            scriptRunner.join(pluginComponent.getScriptTimeout() * 1000);
        }

        scriptRunner.interrupt();

        if (exceptionHolder.scriptException != null) {
            LOG.info("The script execution for CLI notification of alert [" + alert + "] failed.",
                    exceptionHolder.scriptException);

            //make things pretty for the UI
            ScriptEngineInitializer initializer = ScriptEngineFactory.getInitializer(ENGINE_NAME);
            String message = initializer.extractUserFriendlyErrorMessage(exceptionHolder.scriptException);
            int col = exceptionHolder.scriptException.getColumnNumber();
            int line = exceptionHolder.scriptException.getLineNumber();
            String scriptName = createSummary(config,
                    "script $packageName ($packageVersion) in repo $repoName");
            throw new ScriptException(message, scriptName, line, col);
        } else if (exceptionHolder.throwable != null) {
            LOG.info("The script execution for CLI notification of alert [" + alert + "] failed.",
                    exceptionHolder.throwable);

            throw exceptionHolder.throwable;
        }

        scriptOut.flush();
        String scriptOutput = scriptOutputStream.toString(Charset.defaultCharset().name());

        if (scriptOutput.length() == 0) {
            scriptOutput = "Script generated no output.";
        }

        if (scriptOutput.length() > remainingResultSize(result)) {
            scriptOutput = scriptOutput.substring(0, remainingResultSize(result));
        }

        result.addSuccessMessage(scriptOutput);

        return result;
    } catch (IllegalArgumentException e) {
        return SenderResult.getSimpleFailure(e.getMessage()); //well, let's just hope the message doesn't exceed 4k.
    } catch (Throwable e) {
        result.addFailureMessage(ThrowableUtil.getAllMessages(e, true, remainingResultSize(result)));
        return result;
    } finally {
        if (subjectWithSession != null) {
            sessionManager.invalidate(subjectWithSession.getSessionId());
        }
        if (engine != null) {
            returnEngine(engine);
        }

        if (reader != null) {
            try {
                reader.close();
            } catch (IOException e) {
                LOG.error("Failed to close the script reader.", e);
            }
        }
    }
}

From source file:org.quackbot.hooks.loaders.JSHookLoader.java

protected void evalResource(ScriptEngine jsEngine, Map<String, String> sourceMap, String fileLocation)
        throws QuackbotException {
    BufferedReader reader = null;
    try {//w w w. j  a v  a2s  . co m
        InputStream stream = getClass().getClassLoader().getResourceAsStream(fileLocation);
        if (stream == null)
            //Try opening it as a file
            reader = new BufferedReader(new FileReader(fileLocation));
        else
            reader = new BufferedReader(new InputStreamReader(stream));
        jsEngine.eval(reader);

        //Dump contents
        StringBuilder contentBuilder = new StringBuilder();
        String curLine = "";
        while ((curLine = reader.readLine()) != null)
            contentBuilder.append(curLine);
        sourceMap.put(fileLocation, contentBuilder.toString());
    } catch (Exception e) {
        throw new QuackbotException("Can't load Javascript file at " + fileLocation, e);
    }
}

From source file:com.seajas.search.contender.scripting.FeedScriptsTestBase.java

/**
 * Evaluates the script.//from w  w w  .  j ava  2 s.co m
 */
protected SyndFeed run(final String feedUri, final String scriptFile) throws Exception {
    final ScriptEngine engine = engineManager.getEngineByMimeType("text/javascript");

    injectionService = new MockInjectionService();
    subject = new FeedScriptEvaluation(new WebResolverSettings());
    subject.setScriptResolver(new ScriptCacheResolver<FeedScript>() {
        @Override
        public FeedScript resolve(final Bindings bindings) throws ScriptException {
            try {
                for (Map.Entry<String, Object> entry : bindings.entrySet())
                    engine.put(entry.getKey(), entry.getValue());

                engine.eval(readFileToString(new File("src/main/scripts/feed/" + scriptFile), "UTF-8"));

                return ((Invocable) engine).getInterface(FeedScript.class);
            } catch (IOException e) {
                throw new IllegalArgumentException("Invalid script", e);
            }
        }
    });

    if (scriptFile.endsWith(".js"))
        subject.setEngine(engine);
    else
        throw new IllegalArgumentException("Unknown script file extension.");

    subject.setFeedContent(samples.values().iterator().next());

    subject.setWebPages(new WebPages());
    subject.setWebResolver(new WebResolver() {
        @Override
        public String retrieveText(URI resource) {
            return samples.get(resource.toString());
        }
    });
    subject.setFeedURI(new URI(feedUri));
    subject.setCacheResolver(new FeedScriptCacheResolver() {
        @Override
        public boolean isCached(String resource) {
            return false;
        }
    });

    subject.setInjectionService(injectionService);

    subject.init();
    subject.run();

    SyndFeed feed = subject.getFeed();
    assertNotNull("feed", feed);

    // The validated feed must be serializable:
    SyndFeed result = (SyndFeed) feed.clone();
    WebFeeds.validate(result, new URI(feedUri));
    new SyndFeedOutput().outputString(result, true);

    return feed;
}

From source file:nl.geodienstencentrum.maven.plugin.sass.AbstractSassMojo.java

/**
 * Execute the Sass Compilation Ruby Script.
 *
 * @param sassScript//from   w  w w.java  2 s  .  com
 *            the sass script
 * @throws MojoExecutionException
 *             the mojo execution exception
 * @throws MojoFailureException
 *             the mojo failure exception
 */
protected void executeSassScript(final String sassScript) throws MojoExecutionException, MojoFailureException {
    if (this.skip) {
        return;
    }

    final Log log = this.getLog();
    System.setProperty("org.jruby.embed.localcontext.scope", "threadsafe");

    log.debug("Execute Sass Ruby script:\n\n" + sassScript + "\n\n");
    final ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
    final ScriptEngine jruby = scriptEngineManager.getEngineByName("jruby");
    try {
        final CompilerCallback compilerCallback = new CompilerCallback(log);
        jruby.getBindings(ScriptContext.ENGINE_SCOPE).put("compiler_callback", compilerCallback);
        jruby.eval(sassScript);
        if (this.failOnError && compilerCallback.hadError()) {
            throw new MojoFailureException("Sass compilation encountered errors (see above for details).");
        }
    } catch (final ScriptException e) {
        throw new MojoExecutionException("Failed to execute Sass ruby script:\n" + sassScript, e);
    }
    log.debug("\n");
}

From source file:mrf.Graficar.java

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
    // TODO add your handling code here:
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("js");
    ArrayList<Integer> Datosx = new ArrayList<Integer>();
    ArrayList<Double> Datosy = new ArrayList<Double>();
    int in = Integer.parseInt(jTextField2.getText());
    int sup = Integer.parseInt(jTextField3.getText());
    try {/* ww  w.  ja  va  2  s .  c om*/
        XYSeries series = new XYSeries("");
        int inferior = in, superior = sup;
        while (inferior <= superior) {
            Datosx.add(inferior);
            engine.put("X", inferior);
            String a = jTextField1.getText();
            Object operation = engine.eval(a);
            Datosy.add(Double.parseDouble("" + operation));
            jTextArea1.append("Parejas ordenadas " + inferior + ":" + operation + "\n");
            series.add(inferior, Double.parseDouble("" + operation));
            inferior++;
        }

        XYSeriesCollection dataset = new XYSeriesCollection();
        dataset.addSeries(series);

        JFreeChart chart = ChartFactory.createXYLineChart("Grafica del polinomio ingresado", // Ttulo
                "Eje x", // Etiqueta Coordenada X
                "Eje y", // Etiqueta Coordenada Y
                dataset, // Datos
                PlotOrientation.VERTICAL, true, // Muestra la leyenda de los productos (Producto A)              
                false, false);

        // Mostramos la grafica en pantalla
        ChartFrame frame = new ChartFrame("GRAFICA POLINOMIO", chart);
        frame.pack();
        frame.setVisible(true);

    } catch (ScriptException e) {
        e.printStackTrace();
    }

}

From source file:org.rhq.bindings.ScriptEngineFactory.java

/**
 * Goes through the methods of the object found in the <code>scriptEngine</code>'s ENGINE_SCOPE
 * and for each of them generates a top-level function that is called the same name and accepts the same
 * parameters./*  w ww . j  ava  2  s. com*/
 * 
 * @param scriptEngine the script engine to generate the top-level functions in
 * @param bindingName the name of the object in the script engine to generate the functions from
 * 
 * @see ScriptEngineInitializer#generateIndirectionMethod(String, Method)
 * @see NoTopLevelIndirection
 */
public static void bindIndirectionMethods(ScriptEngine scriptEngine, String bindingName) {
    Object object = scriptEngine.get(bindingName);
    if (object == null) {
        LOG.debug("The script engine doesn't contain a binding called '" + bindingName
                + "'. No indirection functions will be generated.");
        return;
    }

    ScriptEngineInitializer initializer = getInitializer(scriptEngine.getFactory().getLanguageName());
    try {
        BeanInfo beanInfo = Introspector.getBeanInfo(object.getClass(), Object.class);
        MethodDescriptor[] methodDescriptors = beanInfo.getMethodDescriptors();

        Map<String, Set<Method>> overloadsPerMethodName = new HashMap<String, Set<Method>>();
        for (MethodDescriptor methodDescriptor : methodDescriptors) {
            Method method = methodDescriptor.getMethod();
            if (shouldIndirect(method)) {
                Set<Method> overloads = overloadsPerMethodName.get(method.getName());
                if (overloads == null) {
                    overloads = new HashSet<Method>();
                    overloadsPerMethodName.put(method.getName(), overloads);
                }
                overloads.add(method);
            }
        }

        for (Set<Method> overloads : overloadsPerMethodName.values()) {
            Set<String> methodDefs = initializer.generateIndirectionMethods(bindingName, overloads);
            for (String methodDef : methodDefs) {
                try {
                    scriptEngine.eval(methodDef);
                } catch (ScriptException e) {
                    LOG.warn("Unable to define global function declared as:\n" + methodDef, e);
                }
            }
        }
    } catch (IntrospectionException e) {
        LOG.debug("Could not inspect class " + object.getClass().getName()
                + ". No indirection methods for variable '" + bindingName + "' will be generated.", e);
    }
}

From source file:com.intuit.karate.Script.java

public static ScriptValue evalInNashorn(String exp, ScriptContext context, ScriptValue selfValue,
        ScriptValue parentValue) {//  ww w  .  j  av  a 2s  .  c o m
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine nashorn = manager.getEngineByName("nashorn");
    Bindings bindings = nashorn.getBindings(javax.script.ScriptContext.ENGINE_SCOPE);
    if (context != null) {
        Map<String, Object> map = context.getVariableBindings();
        for (Map.Entry<String, Object> entry : map.entrySet()) {
            bindings.put(entry.getKey(), entry.getValue());
        }
        bindings.put(ScriptContext.KARATE_NAME, new ScriptBridge(context));
    }
    if (selfValue != null) {
        bindings.put(VAR_SELF, selfValue.getValue());
    }
    if (parentValue != null) {
        bindings.put(VAR_DOLLAR, parentValue.getAfterConvertingFromJsonOrXmlIfNeeded());
    }
    try {
        Object o = nashorn.eval(exp);
        ScriptValue result = new ScriptValue(o);
        logger.trace("nashorn returned: {}", result);
        return result;
    } catch (Exception e) {
        throw new RuntimeException("script failed: " + exp, e);
    }
}

From source file:it.geosolutions.geobatch.action.scripting.ScriptingTest.java

@Test
public void testLoop() throws ScriptException {

    String engineName = "groovy";

    ScriptEngine foundEngine = null;
    // create a script engine manager
    ScriptEngineManager mgr = new ScriptEngineManager();
    List<ScriptEngineFactory> factories = mgr.getEngineFactories();
    System.out.println("FOUND " + factories.size() + " factories");
    for (ScriptEngineFactory sef : factories) {
        System.out.println("FACTORY: " + "'" + sef.getEngineName() + "' " + "'" + sef.getLanguageName() + "' "
                + "'" + sef.getExtensions() + "' " + "'" + sef.getNames() + "' ");
        if (sef.getEngineName().contains(engineName)) {
            foundEngine = sef.getScriptEngine();
        }/* w ww. j a  v a 2  s.c o  m*/

    }

    assertNotNull("Can't find engine '" + engineName + "'", foundEngine);
    foundEngine.eval("print('Hello, World')");
}

From source file:com.esri.gpt.catalog.search.SearchEngineRest.java

@Override
public void doSearch() throws SearchException {
    Exception ex = null;//w w  w.  j a  v a2s . co  m

    try {
        URI uri = this.getConnectionUri();
        URL url = uri.toURL();
        HttpClientRequest clientRequest = HttpClientRequest.newRequest(HttpClientRequest.MethodName.GET,
                url.toExternalForm());
        clientRequest.setConnectionTimeMs(getConnectionTimeoutMs());
        clientRequest.setResponseTimeOutMs(getResponseTimeoutMs());

        Map map = (Map) this.getRequestContext().extractFromSession(SEARCH_CREDENTIAL_MAP);
        if (map != null) {
            CredentialProvider credProvider = (CredentialProvider) map.get(this.getKey());
            if (credProvider != null) {
                clientRequest.setCredentialProvider(credProvider);
            }
        }

        clientRequest.execute();
        String response = clientRequest.readResponseAsCharacters();
        InputStream is = null;
        try {
            SearchXslProfile profile = this.readXslProfile();
            String js = Val.chkStr(profile.getResponsexslt());
            //String js = Val.chkStr(this.getFactoryAttributes().get("searchResponseJsT"));
            String xml = null;
            if (js.toLowerCase().endsWith(".js")) {
                try {
                    ResourcePath rPath = new ResourcePath();
                    URL fileUrl = rPath.makeUrl(js);
                    is = fileUrl.openStream();
                    String jsTransFile = IOUtils.toString(is, "UTF-8");
                    jsTransFile = "var jsGptInput =" + response + ";" + jsTransFile;
                    HttpServletRequest servletRequest = (HttpServletRequest) this.getRequestContext()
                            .getServletRequest();
                    if (servletRequest != null) {
                        jsTransFile = "var jsGptQueryString = '" + servletRequest.getQueryString() + "';"
                                + jsTransFile;
                    }
                    jsTransFile = "var jsGptEndpointSearchQuery = '" + url.toExternalForm() + "';"
                            + jsTransFile;
                    ScriptEngineManager manager = new ScriptEngineManager();
                    ScriptEngine engine = manager.getEngineByName("JavaScript");
                    //manager.put("jsGptInput", response);
                    Object obj = engine.eval(jsTransFile);
                    xml = obj.toString();
                    parseResponse(xml);// has to work before the finally. dont move
                } catch (Exception e) {
                    throw new SearchException(
                            e.getMessage() + ":" + "Error when doing transformation from javascript", e);
                }
            } else {
                xml = XmlIoUtil.jsonToXml(response, "gptJsonXml");
                parseResponse(xml);
            }

            checkPagination();
        } catch (SearchException e) {
            throw e;
        } catch (Exception e) {
            parseResponse(response);
            checkPagination();
        } finally {
            if (is != null) {
                IOUtils.closeQuietly(is);
            }
        }

    } catch (MalformedURLException e) {
        ex = e;
    } catch (IOException e) {
        ex = e;
    } finally {

    }
    if (ex != null) {
        throw new SearchException(ex.getMessage() + ": Could not perform search", ex);
    }
}

From source file:com.github.safrain.remotegsh.server.RgshFilter.java

private void performShellExecute(HttpServletRequest request, HttpServletResponse response) throws IOException {
    ShellSession session = getSession(request.getParameter("sid"));
    if (session == null) {
        response.setStatus(410);// Http status GONE
        return;/* ww  w.  j av a  2  s  . com*/
    }
    ScriptEngine engine = session.getEngine();

    String action = request.getParameter("action");
    if (action == null) {
        StringWriter responseWriter = new StringWriter();
        engine.getContext().setWriter(responseWriter);
        engine.getContext().setErrorWriter(response.getWriter());
        String script = toString(request.getInputStream(), charset);
        JSONObject json = new JSONObject();
        try {
            try {
                Object result = engine.eval(script);
                json.put("result", String.valueOf(result));
                response.setStatus(200);
                json.put("response", responseWriter.getBuffer().toString());
            } catch (ScriptException e) {
                log.log(Level.SEVERE, "Error while running shell command:" + script, e);
                response.setStatus(500);
                e.getCause().printStackTrace(response.getWriter());
                return;
            }
        } catch (JSONException e) {
            log.log(Level.SEVERE, "Error while running shell command:" + script, e);
            response.setStatus(500);
            e.printStackTrace(response.getWriter());
            return;
        }
        response.getWriter().write(json.toString());
    } else {
        Invocable invocable = (Invocable) engine;
        try {
            invocable.invokeFunction("shellAction", action);
        } catch (ScriptException e) {
            response.setStatus(500);
            e.printStackTrace(response.getWriter());
        } catch (NoSuchMethodException e) {
            response.setStatus(500);
            response.getWriter().println("Action not supported");
        } catch (Exception e) {
            response.setStatus(500);
            e.printStackTrace(response.getWriter());
        }
    }

}