Example usage for javax.script ScriptEngine setContext

Introduction

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

Prototype

public void setContext(ScriptContext context);

Source Link

Document

Sets the default ScriptContext of the ScriptEngine whose Bindings, Reader and Writers are used for script executions when no ScriptContext is specified.

Usage

From source file:Main.java

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

    ScriptContext defaultCtx = engine.getContext();
    // Work with defaultCtx here

    // Create a new context
    ScriptContext ctx = new SimpleScriptContext();
    // Configure ctx here

    engine.setContext(ctx);
}

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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");

    ScriptContext defaultCtx = engine.getContext();
    // Work with defaultCtx here

    // Create a new context
    ScriptContext ctx = new SimpleScriptContext();

    // Configure ctx here

    // Set ctx as the new default context for the engine
    engine.setContext(ctx);

    ctx.setBindings(manager.getBindings(), ScriptContext.GLOBAL_SCOPE);

    engine.setContext(ctx);//from ww  w  .j a  va  2  s  .c om
}

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From source file:org.nuxeo.connect.connector.http.proxy.NashornProxyPacResolver.java

@Override
public String[] findPacProxies(String url) {
    ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
    ScriptContext context = new SimpleScriptContext();
    engine.setContext(context); // set as default context, for invokeFunctino
    SimpleBindings bindings = new SimpleBindings();
    context.setBindings(bindings, ScriptContext.ENGINE_SCOPE);
    try {/*from   w  ww. ja va 2 s  . c om*/
        // Register internet functions as Java upcalls
        engine.eval("var NashornProxyPacResolver = Java.type('" + getClass().getName() + "');"
                + "var dnsResolve = NashornProxyPacResolver.dnsResolve;"
                + "var myIpAddress = NashornProxyPacResolver.myIpAddress");
        // Register others pac methods
        engine.eval(getFileReader(PAC_FUNCTIONS_FILE));
        // Register remote pac function
        engine.eval(getRemotePacBodyReader());
        // Call and return pac resolution function
        String proxies = (String) ((Invocable) engine).invokeFunction(EXEC_PAC_FUNC, url, getHost(url));
        return proxies.split(";");
    } catch (IOException | ScriptException | NoSuchMethodException e) {
        log.warn(e, e);
    }
    return null;
}

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From source file:com.aionemu.commons.scripting.AionScriptEngineManager.java

public void executeScript(ScriptEngine engine, File file) throws FileNotFoundException, ScriptException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(file)));

    if (VERBOSE_LOADING) {
        log.info("Loading Script: " + file.getAbsolutePath());
    }// w  w w  . j  a  va  2s  . c  om

    if (PURGE_ERROR_LOG) {
        String name = file.getAbsolutePath() + ".error.log";
        File errorLog = new File(name);
        if (errorLog.isFile()) {
            errorLog.delete();
        }
    }

    if (engine instanceof Compilable && ATTEMPT_COMPILATION) {
        ScriptContext context = new SimpleScriptContext();
        context.setAttribute("mainClass", getClassForFile(file).replace('/', '.').replace('\\', '.'),
                ScriptContext.ENGINE_SCOPE);
        context.setAttribute(ScriptEngine.FILENAME, file.getName(), ScriptContext.ENGINE_SCOPE);
        context.setAttribute("classpath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
        context.setAttribute("sourcepath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
        context.setAttribute("parentLoader", ClassLoader.getSystemClassLoader(), ScriptContext.ENGINE_SCOPE);

        setCurrentLoadingScript(file);
        ScriptContext ctx = engine.getContext();
        try {
            engine.setContext(context);
            if (USE_COMPILED_CACHE) {
                CompiledScript cs = _cache.loadCompiledScript(engine, file);
                cs.eval(context);
            } else {
                Compilable eng = (Compilable) engine;
                CompiledScript cs = eng.compile(reader);
                cs.eval(context);
            }
        } finally {
            engine.setContext(ctx);
            setCurrentLoadingScript(null);
            context.removeAttribute(ScriptEngine.FILENAME, ScriptContext.ENGINE_SCOPE);
            context.removeAttribute("mainClass", ScriptContext.ENGINE_SCOPE);
            context.removeAttribute("parentLoader", ScriptContext.ENGINE_SCOPE);
        }
    } else {
        ScriptContext context = new SimpleScriptContext();
        context.setAttribute("mainClass", getClassForFile(file).replace('/', '.').replace('\\', '.'),
                ScriptContext.ENGINE_SCOPE);
        context.setAttribute(ScriptEngine.FILENAME, file.getName(), ScriptContext.ENGINE_SCOPE);
        context.setAttribute("classpath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
        context.setAttribute("sourcepath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
        context.setAttribute("parentLoader", ClassLoader.getSystemClassLoader(), ScriptContext.ENGINE_SCOPE);
        setCurrentLoadingScript(file);
        try {
            engine.eval(reader, context);
        } finally {
            setCurrentLoadingScript(null);
            engine.getContext().removeAttribute(ScriptEngine.FILENAME, ScriptContext.ENGINE_SCOPE);
            engine.getContext().removeAttribute("mainClass", ScriptContext.ENGINE_SCOPE);
            engine.getContext().removeAttribute("parentLoader", ScriptContext.ENGINE_SCOPE);
        }

    }
}

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From source file:com.l2jfree.gameserver.scripting.L2ScriptEngineManager.java

public void executeScript(ScriptEngine engine, File file) throws FileNotFoundException, ScriptException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(file)));

    if (VERBOSE_LOADING) {
        _log.info("Loading Script: " + file.getAbsolutePath());
    }/*  ww  w. j a  v  a  2  s . com*/

    if (PURGE_ERROR_LOG) {
        String name = file.getAbsolutePath() + ".error.log";
        File errorLog = new File(name);
        if (errorLog.isFile()) {
            errorLog.delete();
        }
    }

    if (engine instanceof Compilable && ATTEMPT_COMPILATION) {
        ScriptContext context = new SimpleScriptContext();
        context.setAttribute("mainClass", getClassForFile(file).replace('/', '.').replace('\\', '.'),
                ScriptContext.ENGINE_SCOPE);
        context.setAttribute(ScriptEngine.FILENAME, file.getName(), ScriptContext.ENGINE_SCOPE);
        context.setAttribute("classpath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
        context.setAttribute("sourcepath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
        context.setAttribute("parentLoader", ClassLoader.getSystemClassLoader(), ScriptContext.ENGINE_SCOPE);

        setCurrentLoadingScript(file);
        ScriptContext ctx = engine.getContext();
        try {
            engine.setContext(context);
            if (USE_COMPILED_CACHE) {
                CompiledScript cs = _cache.loadCompiledScript(engine, file);
                cs.eval(context);
            } else {
                Compilable eng = (Compilable) engine;
                CompiledScript cs = eng.compile(reader);
                cs.eval(context);
            }
        } finally {
            engine.setContext(ctx);
            setCurrentLoadingScript(null);
            context.removeAttribute(ScriptEngine.FILENAME, ScriptContext.ENGINE_SCOPE);
            context.removeAttribute("mainClass", ScriptContext.ENGINE_SCOPE);
            context.removeAttribute("parentLoader", ScriptContext.ENGINE_SCOPE);
        }
    } else {
        ScriptContext context = new SimpleScriptContext();
        context.setAttribute("mainClass", getClassForFile(file).replace('/', '.').replace('\\', '.'),
                ScriptContext.ENGINE_SCOPE);
        context.setAttribute(ScriptEngine.FILENAME, file.getName(), ScriptContext.ENGINE_SCOPE);
        context.setAttribute("classpath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
        context.setAttribute("sourcepath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE);
        context.setAttribute("parentLoader", ClassLoader.getSystemClassLoader(), ScriptContext.ENGINE_SCOPE);
        setCurrentLoadingScript(file);
        try {
            engine.eval(reader, context);
        } finally {
            setCurrentLoadingScript(null);
            engine.getContext().removeAttribute(ScriptEngine.FILENAME, ScriptContext.ENGINE_SCOPE);
            engine.getContext().removeAttribute("mainClass", ScriptContext.ENGINE_SCOPE);
            engine.getContext().removeAttribute("parentLoader", ScriptContext.ENGINE_SCOPE);
        }

    }
}

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From source file:org.nuxeo.automation.scripting.internals.AutomationScriptingServiceImpl.java

@Override
public void run(String script, CoreSession session) throws ScriptException, OperationException {
    ScriptEngine engine = engines.get();
    engine.setContext(new SimpleScriptContext());
    engine.eval(getJSWrapper());//from  w ww  . jav a2  s  .co  m

    // Initialize Operation Context
    if (operationContext == null) {
        operationContext = operationContexts.get();
        operationContext.setCoreSession(session);
    }

    // Injecting Automation Mapper 'automation'
    AutomationMapper automationMapper = new AutomationMapper(session, operationContext);
    engine.put(AutomationScriptingConstants.AUTOMATION_MAPPER_KEY, automationMapper);

    // Inject operation context vars in 'Context'
    engine.put(AutomationScriptingConstants.AUTOMATION_CTX_KEY, automationMapper.ctx.getVars());
    // Session injection
    engine.put("Session", automationMapper.ctx.getCoreSession());
    // User injection
    PrincipalWrapper principalWrapper = new PrincipalWrapper(
            (NuxeoPrincipal) automationMapper.ctx.getPrincipal());
    engine.put("CurrentUser", principalWrapper);
    engine.put("currentUser", principalWrapper);
    // Env Properties injection
    engine.put("Env", Framework.getProperties());
    // DateWrapper injection
    engine.put("CurrentDate", new DateWrapper());
    // Workflow variables injection
    if (automationMapper.ctx.get(Constants.VAR_WORKFLOW) != null) {
        engine.put(Constants.VAR_WORKFLOW, automationMapper.ctx.get(Constants.VAR_WORKFLOW));
    }
    if (automationMapper.ctx.get(Constants.VAR_WORKFLOW_NODE) != null) {
        engine.put(Constants.VAR_WORKFLOW_NODE, automationMapper.ctx.get(Constants.VAR_WORKFLOW_NODE));
    }

    // Helpers injection
    ContextService contextService = Framework.getService(ContextService.class);
    Map<String, ContextHelper> helperFunctions = contextService.getHelperFunctions();
    for (String helperFunctionsId : helperFunctions.keySet()) {
        engine.put(helperFunctionsId, helperFunctions.get(helperFunctionsId));
    }
    engine.eval(script);
}

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From source file:org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.DataFactoryScriptingSupport.java

public void initialize(final DataFactory dataFactory, final DataFactoryContext dataFactoryContext)
        throws ReportDataFactoryException {
    if (globalScriptContext != null) {
        return;//from   w ww.  j  ava  2  s  .  co  m
    }

    this.dataFactory = dataFactory;
    this.resourceManager = dataFactoryContext.getResourceManager();
    this.contextKey = dataFactoryContext.getContextKey();
    this.configuration = dataFactoryContext.getConfiguration();
    this.resourceBundleFactory = dataFactoryContext.getResourceBundleFactory();
    this.dataFactoryContext = dataFactoryContext;

    globalScriptContext = new SimpleScriptContext();
    globalScriptContext.setAttribute("dataFactory", dataFactory, ScriptContext.ENGINE_SCOPE);
    globalScriptContext.setAttribute("configuration", configuration, ScriptContext.ENGINE_SCOPE);
    globalScriptContext.setAttribute("resourceManager", resourceManager, ScriptContext.ENGINE_SCOPE);
    globalScriptContext.setAttribute("contextKey", contextKey, ScriptContext.ENGINE_SCOPE);
    globalScriptContext.setAttribute("resourceBundleFactory", resourceBundleFactory,
            ScriptContext.ENGINE_SCOPE);

    if (StringUtils.isEmpty(globalScriptLanguage)) {
        return;
    }

    globalScriptContext.setAttribute("scriptHelper",
            new ScriptHelper(globalScriptContext, globalScriptLanguage, resourceManager, contextKey),
            ScriptContext.ENGINE_SCOPE);

    final ScriptEngine maybeInvocableEngine = new ScriptEngineManager().getEngineByName(globalScriptLanguage);
    if (maybeInvocableEngine == null) {
        throw new ReportDataFactoryException(String.format(
                "DataFactoryScriptingSupport: Failed to locate scripting engine for language '%s'.",
                globalScriptLanguage));
    }
    if (maybeInvocableEngine instanceof Invocable == false) {
        return;
    }
    this.globalScriptEngine = (Invocable) maybeInvocableEngine;

    maybeInvocableEngine.setContext(globalScriptContext);
    try {
        maybeInvocableEngine.eval(globalScript);
    } catch (ScriptException e) {
        throw new ReportDataFactoryException(
                "DataFactoryScriptingSupport: Failed to execute datafactory init script.", e);
    }
}

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