Example usage for javax.script ScriptEngine createBindings

Introduction

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

Prototype

public Bindings createBindings();

Source Link

Document

Returns an uninitialized Bindings.

Usage

From source file:Main.java

public static void main(String[] args) {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("JavaScript");

    Bindings params = engine.createBindings();

    params.put("stringKey", "Hello");
    params.put("valueKey", 2015);

    Object msg = params.get("stringKey");
    Object year = params.get("valueKey");
    System.out.println("stringKey" + msg);
    System.out.println("valueKey = " + year);

    params.remove("valueKey");
    year = params.get("valueKey");

    boolean containsYear = params.containsKey("valueKey");
    System.out.println("valueKey = " + year);
    System.out.println("params contains year = " + containsYear);
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    ScriptEngineManager manager = new ScriptEngineManager();
    manager.put("global", "global bindings");

    dumpBindings(manager.getBindings());
    ScriptEngine engine = manager.getEngineByExtension("js");
    engine.put("engine", "engine bindings");

    dumpBindings(engine.getBindings(ScriptContext.GLOBAL_SCOPE));

    dumpBindings(engine.getBindings(ScriptContext.ENGINE_SCOPE));

    Bindings bindings = engine.createBindings();
    bindings.put("engine", "overridden engine bindings");
    bindings.put("bindings", bindings);
    engine.eval("app.dumpBindings (bindings);", bindings);

    ScriptEngine engine2 = manager.getEngineByExtension("js");
    engine2.put("engine2", "engine2 bindings");

    dumpBindings(engine2.getBindings(ScriptContext.GLOBAL_SCOPE));
    dumpBindings(engine2.getBindings(ScriptContext.ENGINE_SCOPE));
    dumpBindings(engine.getBindings(ScriptContext.ENGINE_SCOPE));
}

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From source file:GetToKnowBindingsAndScopes.java

public static void main(String[] args) {
    ScriptEngineManager manager = new ScriptEngineManager();
    manager.put("global", "global bindings");

    dumpBindings(manager.getBindings());
    ScriptEngine engine = manager.getEngineByExtension("js");
    engine.put("engine", "engine bindings");

    dumpBindings(engine.getBindings(ScriptContext.GLOBAL_SCOPE));

    dumpBindings(engine.getBindings(ScriptContext.ENGINE_SCOPE));

    try {/*from w ww . j  a va  2 s .co m*/
        Bindings bindings = engine.createBindings();
        bindings.put("engine", "overridden engine bindings");
        bindings.put("app", new GetToKnowBindingsAndScopes());
        bindings.put("bindings", bindings);
        engine.eval("app.dumpBindings (bindings);", bindings);
    } catch (ScriptException se) {
        System.err.println(se.getMessage());
    }

    ScriptEngine engine2 = manager.getEngineByExtension("js");
    engine2.put("engine2", "engine2 bindings");

    dumpBindings(engine2.getBindings(ScriptContext.GLOBAL_SCOPE));
    dumpBindings(engine2.getBindings(ScriptContext.ENGINE_SCOPE));
    dumpBindings(engine.getBindings(ScriptContext.ENGINE_SCOPE));
}

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From source file:Main.java

public static void main(String[] args) throws ScriptException {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("JavaScript");

    manager.put("n1", 1);
    String script = "var sum = n1 + n2;print(msg + " + "' n1=' + n1 + ', n2=' + n2 + " + "', sum=' + sum);";

    engine.put("n2", 2);
    engine.put("msg", "a string");
    engine.eval(script);//  w  w w .j  a  v a  2s  .  com

    Bindings bindings = engine.createBindings();
    bindings.put("n2", 3);
    bindings.put("msg", "another string");
    engine.eval(script, bindings);

    ScriptContext ctx = new SimpleScriptContext();
    Bindings ctxGlobalBindings = engine.createBindings();
    ctx.setBindings(ctxGlobalBindings, GLOBAL_SCOPE);
    ctx.setAttribute("n1", 4, GLOBAL_SCOPE);
    ctx.setAttribute("n2", 5, ENGINE_SCOPE);
    ctx.setAttribute("msg", "ScriptContext:", ENGINE_SCOPE);
    engine.eval(script, ctx);

    engine.eval(script);
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("JavaScript");

    if (!(engine instanceof Compilable)) {
        System.out.println("Script compilation not supported.");
        return;//from  ww w . j  a v  a  2 s  . com
    }
    Compilable comp = (Compilable) engine;

    CompiledScript cScript = comp.compile("print(n1 + n2)");

    Bindings scriptParams = engine.createBindings();
    scriptParams.put("n1", 2);
    scriptParams.put("n2", 3);
    cScript.eval(scriptParams);

    scriptParams.put("n1", 9);
    scriptParams.put("n2", 7);
    cScript.eval(scriptParams);
}

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From source file:com.xafero.vee.cmd.MainApp.java

private static void execute(String fileName) throws FileNotFoundException, ScriptException {
    File file = (new File(fileName)).getAbsoluteFile();
    if (!file.exists())
        throw new FileNotFoundException("There's no file named '" + file + "'!");
    String extension = Files.getExtension(file);
    ScriptEngineManager mgr = new ScriptEngineManager();
    ScriptEngine engine = mgr.getEngineByExtension(extension);
    Bindings env = engine.createBindings();
    inject(env, file);/* w  w  w .j  av  a 2s .c om*/
    try {
        Object result = engine.eval(new FileReader(file), env);
        if (result != null)
            System.out.println(result.toString());
    } catch (ScriptException e) {
        throw e;
    }
}

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From source file:be.solidx.hot.JSR223ScriptExecutor.java

@Override
public Object execute(Script<CompiledScript> script, Map<String, Object> contextVars) throws ScriptException {
    try {//from  www  .jav  a 2 s  .  c  o  m
        ScriptEngine scriptEngine = getEngine();
        Bindings bindings = scriptEngine.createBindings();
        ScriptContext scriptContext = new SimpleScriptContext();
        scriptContext.setBindings(bindings, ScriptContext.ENGINE_SCOPE);
        bindings.putAll(contextVars);
        executePreExecuteScripts(scriptContext);
        CompiledScript compiledScript = getCachedScript(script);
        Object object = compiledScript.eval(scriptContext);
        if (object == null)
            return bindings;
        return object;
    } catch (javax.script.ScriptException e) {
        throw new ScriptException(e);
    }
}

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From source file:org.tomitribe.tribestream.registryng.bootstrap.Provisioning.java

@PostConstruct
public void init() {
    loginContext.setUsername("system");

    ofNullable(script).ifPresent(s -> {
        final ScriptEngine engine = new ScriptEngineManager().getEngineByExtension("js");
        final Bindings bindings = engine.createBindings();
        bindings.put("props", System.getProperties());

        final File file = new File(s);
        if (file.isFile()) {
            try (final Reader reader = new FileReader(file)) {
                engine.eval(reader, bindings);
            } catch (final IOException | ScriptException e) {
                throw new IllegalArgumentException(e);
            }//from w  w w. jav a2s  .c o  m
        } else {
            try {
                engine.eval(s, bindings);
            } catch (final ScriptException e) {
                throw new IllegalArgumentException(e);
            }
        }
    });
    restore();
}

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From source file:be.solidx.hot.JSR223ScriptExecutor.java

@Override
public Object execute(Script<CompiledScript> script, Map<String, Object> contextVars, Writer writer)
        throws ScriptException {
    try {//from   w w w  . j  a  v  a 2s.c  o  m
        ScriptEngine scriptEngine = getEngine();
        SimpleScriptContext simpleScriptContext = new SimpleScriptContext();
        Bindings bindings = scriptEngine.createBindings();
        bindings.putAll(contextVars);
        simpleScriptContext.setBindings(bindings, ScriptContext.ENGINE_SCOPE);
        executePreExecuteScripts(simpleScriptContext);
        simpleScriptContext.setWriter(writer);
        CompiledScript compiledScript = getCachedScript(script);
        Object object = compiledScript.eval(simpleScriptContext);
        writer.flush();
        if (object == null)
            return bindings;
        return object;
    } catch (Exception e) {
        throw new ScriptException(e);
    }
}

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From source file:org.jahia.modules.googleAnalytics.GoogleAnalyticsFilter.java

@Override
public String execute(String previousOut, RenderContext renderContext, Resource resource, RenderChain chain)
        throws Exception {
    String out = previousOut;/*from   ww  w . j a  v a  2s  .  c o  m*/
    String webPropertyID = renderContext.getSite().hasProperty("webPropertyID")
            ? renderContext.getSite().getProperty("webPropertyID").getString()
            : null;
    if (StringUtils.isNotEmpty(webPropertyID)) {
        String script = getResolvedTemplate();
        if (script != null) {
            Source source = new Source(previousOut);
            OutputDocument outputDocument = new OutputDocument(source);
            List<Element> headElementList = source.getAllElements(HTMLElementName.HEAD);
            for (Element element : headElementList) {
                final EndTag headEndTag = element.getEndTag();
                String extension = StringUtils.substringAfterLast(template, ".");
                ScriptEngine scriptEngine = scriptEngineUtils.scriptEngine(extension);
                ScriptContext scriptContext = new GoogleScriptContext();
                final Bindings bindings = scriptEngine.createBindings();
                bindings.put("webPropertyID", webPropertyID);
                String url = resource.getNode().getUrl();
                if (renderContext.getRequest().getAttribute("analytics-path") != null) {
                    url = (String) renderContext.getRequest().getAttribute("analytics-path");
                }
                bindings.put("resourceUrl", url);
                bindings.put("resource", resource);
                bindings.put("gaMap", renderContext.getRequest().getAttribute("gaMap"));
                scriptContext.setBindings(bindings, ScriptContext.GLOBAL_SCOPE);
                // The following binding is necessary for Javascript, which doesn't offer a console by default.
                bindings.put("out", new PrintWriter(scriptContext.getWriter()));
                scriptEngine.eval(script, scriptContext);
                StringWriter writer = (StringWriter) scriptContext.getWriter();
                final String googleAnalyticsScript = writer.toString();
                if (StringUtils.isNotBlank(googleAnalyticsScript)) {
                    outputDocument.replace(headEndTag.getBegin(), headEndTag.getBegin() + 1,
                            "\n" + AggregateCacheFilter.removeEsiTags(googleAnalyticsScript) + "\n<");
                }
                break; // avoid to loop if for any reasons multiple body in the page
            }
            out = outputDocument.toString().trim();
        }
    }

    return out;
}

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