Example usage for javax.script ScriptEngineManager getEngineByName

List of usage examples for javax.script ScriptEngineManager getEngineByName

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Introduction

In this page you can find the example usage for javax.script ScriptEngineManager getEngineByName.

Prototype

public ScriptEngine getEngineByName(String shortName)

Source Link

Document

Looks up and creates a ScriptEngine for a given name.

Usage

From source file:net.landora.video.filerenaming.RenameScriptManager.java

RenamingScript createRenamingScript(String folderScript, String fileScript, boolean reportExceptions) {
    try {//  ww  w  .j  a v  a2s.c o m
        StringBuilder str = new StringBuilder();

        str.append(getClassScript("RenameScript.py"));
        str.append("\n");
        str.append(createScript("findFolderName", folderScript));
        str.append("\n");
        str.append(createScript("findFilename", fileScript));

        ScriptEngineManager manager = new ScriptEngineManager();
        ScriptEngine engine = manager.getEngineByName("jython");

        engine.eval(str.toString());

        Invocable inv = (Invocable) engine;
        return inv.getInterface(RenamingScript.class);
    } catch (Exception ex) {
        if (reportExceptions) {
            LoggerFactory.getLogger(getClass()).error("Error getting rename script.", ex);
        }
        return null;
    }
}

From source file:cz.vity.freerapid.plugins.services.webshare.PasswordJS.java

public String encryptPassword(String pass, String salt) throws Exception {
    try {/*w  w w . jav  a 2 s  . com*/
        ScriptEngineManager factory = new ScriptEngineManager();
        ScriptEngine engine = factory.getEngineByName("JavaScript");
        if (engine == null)
            throw new RuntimeException("JavaScript engine not found");
        final String md5enc = (String) engine
                .eval(JavaScript_MD5Crypt + "md5crypt(\"" + pass + "\", \"" + salt + "\")");
        return DigestUtils.shaHex(md5enc);
    } catch (Exception e) {
        throw new ServiceConnectionProblemException("Can't execute javascript");
    }
}

From source file:co.mcme.barry.listeners.ChatListener.java

@EventHandler(priority = EventPriority.MONITOR)
public void onMathChat(AsyncPlayerChatEvent event) {
    if (event.getMessage().contains(".math")) {
        Player p = event.getPlayer();//from   w w w .  j av a  2  s  .c om
        ScriptEngineManager mgr = new ScriptEngineManager();
        ScriptEngine engine = mgr.getEngineByName("JavaScript");
        String[] msg = event.getMessage().split(" ");
        if (msg.length > 1) {
            try {
                List<String> list = new ArrayList<>(Arrays.asList(msg));
                list.removeAll(Arrays.asList("", null, ".math"));
                String expression = StringUtils.join(list, " ");
                BarryPlugin.sendGlobalMessage("(" + ChatColor.DARK_AQUA + p.getName() + ChatColor.WHITE + ") "
                        + expression + " = " + engine.eval(expression));
            } catch (ScriptException ex) {
                b.sendTargetedMessage("I can't figure out that math problem.", p);
            }
        } else {
            b.sendTargetedMessage("I need to know what math to do", p);
        }
    }
}

From source file:com.orange.clara.cloud.servicedbdumper.config.CatalogConfig.java

private float getCostFromQuota(String quota, String formula) throws ParseException, ScriptException {
    long size = ByteFormat.parse(quota);
    String formulaInjected = formula.replaceAll("quota", String.valueOf(size * this.getDefaultCost()));
    ScriptEngineManager factory = new ScriptEngineManager();
    ScriptEngine engine = factory.getEngineByName("JavaScript");
    Object eval = engine.eval(formulaInjected);
    if (eval instanceof Integer) {
        return new Float((Integer) eval);
    }//w  w w  . ja v  a  2s  . c o m
    if (eval instanceof Float) {
        return (Float) eval;
    }
    return Math.round((Double) eval);
}

From source file:com.blackbear.flatworm.config.ScriptletBO.java

/**
 * Constructor for ScriptIdentityImpl that attempts to load the Script Engine specified by name.
 *
 * @param scriptEngineName The name of the script engine to load. If {@code null} the {@code ScriptletBO.DEFAULT_SCRIPT_ENGINE} is
 *                         used./*from  w  w  w.  j a v a2s. c o  m*/
 * @param functionName     The name of the function in the script that should be executed - the {@link
 *                         com.blackbear.flatworm.FileFormat} instance will be the only parameter sent to the function specified. If the
 *                         {@code functionName} is {@code null} then the {@code ScriptIdentityImp.DEFAULT_SCRIPT_IDENTITY_FUNCTION_NAME} value will be
 *                         used.
 * @throws FlatwormConfigurationException should the script be invalid or should the {@code scriptEngineName} not resolve to a valid
 *                                        script engine.
 */
public ScriptletBO(String scriptEngineName, String functionName) throws FlatwormConfigurationException {
    this.scriptEngineName = StringUtils.isBlank(scriptEngineName) ? DEFAULT_SCRIPT_ENGINE : scriptEngineName;
    this.functionName = StringUtils.isBlank(functionName)
            ? ScriptIdentityImpl.DEFAULT_SCRIPT_IDENTITY_FUNCTION_NAME
            : functionName;

    ScriptEngineManager engineManager = new ScriptEngineManager();
    scriptEngine = engineManager.getEngineByName(this.scriptEngineName);

    if (scriptEngine == null) {
        throw new FlatwormConfigurationException(String
                .format("The %s ScriptEngine could not be found by the given name.", this.scriptEngineName));
    } else {
        scriptInvocable = (Invocable) scriptEngine;
    }
}

From source file:it.delli.mwebc.command.impl.EventCommand.java

public void execute(Page page, JsonObject data) {
    String eventName = data.get("event").getAsString();
    String eventType = data.get("eventType").getAsString();
    String method = data.get("forward").getAsString();
    Widget widget = null;//from w  w  w  . j  a va 2  s .  co  m
    EventListener eventListener = null;
    if (data.get("id") != null) {
        widget = page.getWidget(data.get("id").getAsString());
        eventListener = widget.getEventListener(eventName);
    } else {
        eventListener = page.getEventListener();
    }
    Class eventTypeClass = page.getApplication().getEventClass(eventType);
    Event event = null;
    try {
        event = (Event) eventTypeClass.getConstructor(String.class, Widget.class, JsonObject.class)
                .newInstance(eventName, widget, data.get("data").getAsJsonObject());
    } catch (Exception e) {
        log.error("Exception in creating event instance for event type " + eventType);
    }
    ;
    event.setPage(page);
    // bind widgets
    ReflectionUtils.bindWidgets(eventListener, page);
    //
    Method forwardMethod = null;
    if (eventListener instanceof PageEventListener && page.getWidget(method) != null) {
        try {
            it.delli.mwebc.widget.Method widgetMethod = (it.delli.mwebc.widget.Method) page.getWidget(method);
            ScriptEngineManager factory = new ScriptEngineManager();
            ScriptEngine engine = factory.getEngineByName("groovy");
            engine.put("eventListener", null);
            engine.eval(widgetMethod.getScript());
            eventListener = (EventListener) engine.get("eventListener");
            forwardMethod = eventListener.getClass().getMethod(method, Event.class);
            forwardMethod.setAccessible(true);
        } catch (Exception e) {
            log.error("Exception in getting method to execute", e);
        }
    } else {
        try {
            forwardMethod = eventListener.getClass().getMethod(method, Event.class);
            forwardMethod.setAccessible(true);
        } catch (Exception e) {
            log.error("Exception in getting method to execute", e);
        }
    }
    if (forwardMethod != null) {
        if (event.getWidget() != null) {
            log.info("Executing forward method " + eventListener.getClass().getName() + "."
                    + forwardMethod.getName() + " for event " + event.getName() + " on widget "
                    + event.getWidget().getClass().getName() + " (" + event.getWidget().getId() + ")");
        } else {
            log.info("Executing forward method " + eventListener.getClass().getName() + "."
                    + forwardMethod.getName() + " for event " + event.getName());
        }
        try {
            forwardMethod.invoke(eventListener, event);
        } catch (Exception e) {
            if (event.getWidget() != null) {
                log.error("Exception in executing of forward method " + eventListener.getClass().getName() + "."
                        + forwardMethod.getName() + " for event " + event.getName() + " on widget "
                        + event.getWidget().getClass().getName() + " (" + event.getWidget().getId() + ")", e);
            } else {
                log.error("Exception in executing of forward method " + eventListener.getClass().getName() + "."
                        + forwardMethod.getName() + " for event " + event.getName(), e);
            }
            log.error("Exception in forward method execution", e);
        }
    } else {
        log.info("Forward method does not exist in event listener " + eventListener.getClass().getName()
                + " for event " + event.getName());
        log.info("Notifying end of failed execution for event " + event.getName());
    }
}

From source file:org.openhab.binding.ebus.parser.EBusConfigurationProvider.java

/**
 * Constructor//  www. j a v a2 s  .  c  o m
 */
public EBusConfigurationProvider() {
    final ScriptEngineManager mgr = new ScriptEngineManager();
    final ScriptEngine engine = mgr.getEngineByName("JavaScript");

    if (engine == null) {
        logger.warn("Unable to load \"JavaScript\" engine! Skip every eBus value calculated by JavaScript.");

    } else if (engine instanceof Compilable) {
        compEngine = (Compilable) engine;

    }
}

From source file:com.seajas.search.profiler.validator.ModifierValidator.java

/**
 * Validate the given command object.//from  w w  w. j  a  va 2 s. c  o  m
 * 
 * @param command
 * @param errors
 */
@Override
public void validate(final Object command, final Errors errors) {
    ModifierCommand modifier = (ModifierCommand) command;

    if (modifier.getAction() != null
            && (modifier.getAction().equals("add") || modifier.getAction().equals("edit"))) {
        if (StringUtils.isEmpty(modifier.getUrlExpression()))
            errors.rejectValue("urlExpression", "modifiers.validator.error.url.expression.empty");
        else
            try {
                Pattern.compile(modifier.getUrlExpression());
            } catch (PatternSyntaxException e) {
                errors.rejectValue("urlExpression", "modifiers.validator.error.url.expression.invalid");
            }

        if (StringUtils.isEmpty(modifier.getUrlType()))
            errors.rejectValue("urlType", "modifiers.validator.error.url.type.empty");
    } else if (modifier.getFilterAction() != null && (modifier.getFilterAction().equals("add-filter")
            || modifier.getFilterAction().equals("edit-filter"))) {
        if (StringUtils.isEmpty(modifier.getFilterStart()))
            errors.rejectValue("filterStart", "modifiers.validator.error.filter.start.empty");
        else if (modifier.getFilterAsExpression())
            try {
                Pattern.compile(modifier.getFilterStart());
            } catch (PatternSyntaxException e) {
                errors.rejectValue("filterStart", "modifiers.validator.error.filter.start.invalid");
            }

        if (StringUtils.isEmpty(modifier.getFilterEnd()))
            errors.rejectValue("filterEnd", "modifiers.validator.error.filter.end.empty");
        else if (modifier.getFilterAsExpression())
            try {
                Pattern.compile(modifier.getFilterEnd());
            } catch (PatternSyntaxException e) {
                errors.rejectValue("filterEnd", "modifiers.validator.error.filter.end.invalid");
            }
    } else if (modifier.getScriptAction() != null && (modifier.getScriptAction().equals("add-script")
            || modifier.getScriptAction().equals("edit-script"))) {
        if (StringUtils.isEmpty(modifier.getScriptLanguage()))
            errors.rejectValue("scriptLanguage", "modifiers.validator.error.script.language.invalid");

        if (StringUtils.isEmpty(modifier.getScriptContent()))
            errors.rejectValue("scriptContent", "modifiers.validator.error.script.content.empty");
        else {
            if (modifier.getScriptLanguage().equalsIgnoreCase("xslt")) {
                StreamSource source = new StreamSource(new StringReader(modifier.getScriptContent()));

                try {
                    TransformerFactory.newInstance().newTransformer(source);
                } catch (Exception e) {
                    errors.rejectValue("scriptContent",
                            "modifiers.validator.error.script.content.invalid.transformation");
                }
            } else {
                ScriptEngineManager engineManager = new ScriptEngineManager();
                ScriptEngine engine = engineManager.getEngineByName(modifier.getScriptLanguage().toLowerCase());

                engine.put("input", "");
                engine.put("inputUrl", "");
                engine.put("inputMaximumContentLength", 0L);

                try {
                    engine.eval(modifier.getScriptContent());
                } catch (ScriptException e) {
                    errors.rejectValue("scriptContent",
                            "modifiers.validator.error.script.content.syntax.error");

                    logger.warn("Script validation failed", e);
                }
            }
        }
    }
}

From source file:org.jspringbot.keyword.json.JSONHelper.java

public int getJsonListLength(String jsonExpression) {
    validate();/*from w ww .j  a v  a 2 s. co m*/

    try {
        ScriptEngineManager manager = new ScriptEngineManager();
        engine = manager.getEngineByName("JavaScript");
        engine.eval("var json = " + jsonString + ";");
        engine.eval("var jsonExpr = json." + jsonExpression + ".length;");

        int length = ((Number) engine.get("jsonExpr")).intValue();

        LOG.createAppender().appendBold("Get JSON List Length:")
                .appendProperty("Json Expression", jsonExpression).appendProperty("Length", length).log();

        return length;
    } catch (Exception e) {
        throw new IllegalStateException("Response is not json.", e);
    }
}

From source file:org.springframework.data.hadoop.scripting.Jsr223ScriptEvaluator.java

protected ScriptEngine discoverEngine(ScriptSource script, Map<String, Object> arguments) {
    ScriptEngineManager engineManager = new ScriptEngineManager(classLoader);
    ScriptEngine engine = null;/*from   w  w  w .j  av a2s.com*/

    if (StringUtils.hasText(language)) {
        engine = engineManager.getEngineByName(language);
    } else {
        // make use the extension (enhanced ScriptSource interface)
        Assert.hasText(extension, "no language or extension specified");
        engine = engineManager.getEngineByExtension(extension);
    }

    Assert.notNull(engine, "No suitable engine found for "
            + (StringUtils.hasText(language) ? "language " + language : "extension " + extension));

    if (log.isDebugEnabled()) {
        ScriptEngineFactory factory = engine.getFactory();
        log.debug(String.format("Using ScriptEngine %s (%s), language %s (%s)", factory.getEngineName(),
                factory.getEngineVersion(), factory.getLanguageName(), factory.getLanguageVersion()));
    }

    return engine;
}