Package javax.script

Examples of javax.script.CompiledScript

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                    if (supportsCompilable) {
                        String cacheKey =
                                getScriptLanguage()+"#"+
                                scriptFile.getAbsolutePath()+"#"+
                                        scriptFile.lastModified();
                        CompiledScript compiledScript =
                                compiledScriptsCache.get(cacheKey);
                        if (compiledScript==null) {
                            synchronized (compiledScriptsCache) {
                                compiledScript =
                                        compiledScriptsCache.get(cacheKey);
                                if (compiledScript==null) {
                                    // TODO Charset ?
                                    fileReader = new BufferedReader(new FileReader(scriptFile),
                                            (int)scriptFile.length());
                                    compiledScript =
                                            ((Compilable) scriptEngine).compile(fileReader);
                                    compiledScriptsCache.put(cacheKey, compiledScript);
                                }
                            }
                        }
                        return compiledScript.eval(bindings);
                    } else {
                        // TODO Charset ?
                        fileReader = new BufferedReader(new FileReader(scriptFile),
                                (int)scriptFile.length());
                        return scriptEngine.eval(fileReader, bindings);                   
                    }
                } finally {
                    IOUtils.closeQuietly(fileReader);
                }
            }  else {
                throw new ScriptException("Script file '"+scriptFile.getAbsolutePath()+"' does not exist or is unreadable for element:"+getName());
            }
        } else if (!StringUtils.isEmpty(getScript())){
            if (supportsCompilable && !StringUtils.isEmpty(cacheKey)) {
                CompiledScript compiledScript =
                        compiledScriptsCache.get(cacheKey);
                if (compiledScript==null) {
                    synchronized (compiledScriptsCache) {
                        compiledScript =
                                compiledScriptsCache.get(cacheKey);
                        if (compiledScript==null) {
                            compiledScript =
                                    ((Compilable) scriptEngine).compile(getScript());
                            compiledScriptsCache.put(cacheKey, compiledScript);
                        }
                    }
                }
                return compiledScript.eval(bindings);
            } else {
                return scriptEngine.eval(getScript(), bindings);
            }
        } else {
            throw new ScriptException("Both script file and script text are empty for element:"+getName());           
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    }

    public Object processVertex(final GremlinGroovy annotation, final Method method, final Object[] arguments, final FramedGraph framedGraph,
                                final Vertex vertex) {
        try {
            final CompiledScript script = this.engine.compile(annotation.value());
            final Bindings bindings = getBindings(method, arguments);
            bindings.put(IT, vertex);
            bindings.put(G, framedGraph);
            final Object result = script.eval(bindings);

            // TODO: Deprecate the use of _() and replace with it
            if (result instanceof Pipe & annotation.value().startsWith(PIPE)) {
                LOGGER.warning("_() is deprecated in favor of using 'it' to represent the framed vertex");
                ((Pipe) result).setStarts(new SingleIterator<Element>(vertex));
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        latch.await();
    }

    public void testThreadSafetyOnCompiledScript() throws Exception {
        final GremlinGroovyScriptEngine engine = new GremlinGroovyScriptEngine(10);
        final CompiledScript script = engine.compile("pipe = g.V('name',name); if(pipe.hasNext()) { pipe.out.count() } else { null }");

        int runs = 500;
        final CountDownLatch latch = new CountDownLatch(runs);
        final List<String> names = Arrays.asList("marko", "peter", "josh", "vadas", "stephen", "pavel", "matthias");
        final Random random = new Random();

        for (int i = 0; i < runs; i++) {
            new Thread() {
                public void run() {
                    String name = names.get(random.nextInt(names.size() - 1));
                    try {
                        final Bindings bindings = engine.createBindings();
                        bindings.put("g", TinkerGraphFactory.createTinkerGraph());
                        bindings.put("name", name);
                        Object result = script.eval(bindings);
                        if (name.equals("stephen") || name.equals("pavel") || name.equals("matthias"))
                            assertNull(result);
                        else
                            assertNotNull(result);
                    } catch (ScriptException e) {
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        int runs = 1000;

        long totalTime = 0l;
        for (int i = 0; i < runs; i++) {
            long time = System.currentTimeMillis();
            CompiledScript script = engine.compile("g.v(1).out().count()");
            script.eval(bindings);
            totalTime += System.currentTimeMillis() - time;
        }
        System.out.println("Multi-compiled script runtime for " + runs + " runs: " + totalTime);

        totalTime = 0l;
        for (int i = 0; i < runs; i++) {
            long time = System.currentTimeMillis();
            engine.eval("g.v(1).out().count()", bindings);
            totalTime += System.currentTimeMillis() - time;
        }
        System.out.println("Evaluated script runtime for " + runs + " runs: " + totalTime);

        totalTime = 0l;
        CompiledScript script = engine.compile("g.v(1).out().count()");
        for (int i = 0; i < runs; i++) {
            long time = System.currentTimeMillis();
            script.eval(bindings);
            totalTime += System.currentTimeMillis() - time;
        }
        System.out.println("Compiled script runtime for " + runs + " runs: " + totalTime);
    }
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      assertNotNull(se);
      se.put("key", "value");
      assertEquals("value",se.eval("key"));
      if (se instanceof Compilable){
          Compilable co = (Compilable) se;
          CompiledScript cs = co.compile("key");
          assertNotNull(cs);
          assertEquals("value",cs.eval());
            assertEquals("value",cs.eval());         
      } else {
          fail("Expected engine to implement Compilable");
      }
  }
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     */
    private void compileAndCache(String scriptId, String script) throws ScriptException
    {
        if ( compiler_ != null )
        {
            CompiledScript compiledScript = compiler_.compile(script);
            calloutCache_.put(scriptId, compiledScript);
        }
    }
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     * @param args arguments to be passed to the callouts.
     */
    public Object executeCallout(String callout, Object ... args)
    {
        Object result = null;
        CompiledScript script = calloutCache_.get(callout);
        if ( script != null )
        {
            try
            {
                Bindings binding = new SimpleBindings();
                binding.put("args", args);
                result = script.eval(binding);
            }
            catch(ScriptException ex)
            {
                logger_.warn(LogUtil.throwableToString(ex));
            }
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            "end\n" +
            "def get_perimeter(x, y)\n" +
              "x + 2.0 * y + Math::PI / 2.0 * x\n" +
            "end\n" +
            "norman_window(2, 1)";
        CompiledScript cs = ((Compilable)instance).compile(script);
        List<Double> result = (List<Double>) cs.eval();
        assertEquals(3.570796327, result.get(0), 0.000001);
        assertEquals(7.141592654, result.get(1), 0.000001);

        instance.getBindings(ScriptContext.ENGINE_SCOPE).clear();
        instance = null;
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        }
        String filename = basedir + "/core/src/test/ruby/org/jruby/embed/ruby/proverbs_of_the_day.rb";
        Reader reader = new FileReader(filename);
       
        instance.put("$day", -1);
        CompiledScript cs = ((Compilable)instance).compile(reader);
        String result = (String) cs.eval();
        String expResult = "A rolling stone gathers no moss.";
        assertEquals(expResult, result);
        result = (String) cs.eval();
        expResult = "A friend in need is a friend indeed.";
        assertEquals(expResult, result);
        result = (String) cs.eval();
        expResult = "Every garden may have some weeds.";
        assertEquals(expResult, result);
       
        instance.getBindings(ScriptContext.ENGINE_SCOPE).clear();
        instance = null;
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    // set engine scope namespace
    Bindings nameSpace = engine.getBindings(ScriptContext.ENGINE_SCOPE);
    // add the logger to the script
    nameSpace.put("log", log);
    // compile the wrapper script
    CompiledScript wrapper = ((Compilable) engine).compile(jsWrapper);
    nameSpace.put("Wrapper", wrapper);

    // get the function name ie. class name / ctor
    String funcName = RhinoScriptUtils.getFunctionName(scriptSource);
    if (log.isDebugEnabled()) {
      log.debug("New script: " + funcName);
    }
    // set the 'filename'
    nameSpace.put(ScriptEngine.FILENAME, funcName);

    if (null != interfaces) {
      nameSpace.put("interfaces", interfaces);
    }

    if (null != extendedClass) {
      if (log.isDebugEnabled()) {
        log.debug("Extended: " + extendedClass.getName());
      }
      nameSpace.put("supa", extendedClass.newInstance());
    }
    //
    // compile the script
    CompiledScript script = ((Compilable) engine).compile(scriptSource);
    // eval the script with the associated namespace
    Object o = null;
    try {
      o = script.eval();
    } catch (Exception e) {
      log.error("Problem evaluating script", e);
    }
    if (log.isDebugEnabled()) {
      log.debug("Result of script call: " + o);
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