Examples with ScriptEngine javax.script.ScriptEngine used on opensource projects

Example 91 with ScriptEngine

use of javax.script.ScriptEngine in project scheduling by ow2-proactive.

the class EvalScriptCommand method execute.

@Override
public void execute(ApplicationContext currentContext) throws CLIException {
    ScriptEngine engine = currentContext.getEngine();
    Writer writer = currentContext.getDevice().getWriter();
    if (scriptArgs != null) {
        engine.getContext().getBindings(ScriptContext.ENGINE_SCOPE).putAll(bindings(scriptArgs));
    }
    String script = FileUtility.readFileToString(new File(scriptPathname));
    try {
        engine.eval(script);
    } catch (ScriptException e) {
        e.printStackTrace(new PrintWriter(writer, true));
    }
}

Example 92 with ScriptEngine

use of javax.script.ScriptEngine in project scheduling by ow2-proactive.

the class Script method findScriptEngineCandidates.

private Map<ScriptEngine, Integer> findScriptEngineCandidates(boolean findByName) {
    Map<ScriptEngine, Integer> matchPositionPerScriptEngineCandidate = new HashMap<>();
    int matchPosition;
    List<String> lookupCriteria;
    for (ScriptEngineFactory factory : new ScriptEngineManager().getEngineFactories()) {
        matchPosition = 0;
        if (findByName) {
            lookupCriteria = factory.getNames();
        } else {
            lookupCriteria = factory.getExtensions();
        }
        for (String criteria : lookupCriteria) {
            if (criteria.equalsIgnoreCase(scriptEngineLookupName)) {
                matchPositionPerScriptEngineCandidate.put(factory.getScriptEngine(), matchPosition);
            }
            matchPosition++;
        }
    }
    return matchPositionPerScriptEngineCandidate;
}

Example 93 with ScriptEngine

use of javax.script.ScriptEngine in project scheduling by ow2-proactive.

the class Script method findBestScriptEngine.

private ScriptEngine findBestScriptEngine(Map<ScriptEngine, Integer> scriptEngineCandidates) {
    int minimumMatchingIndex = Integer.MAX_VALUE;
    ScriptEngine bestScriptEngine = null;
    for (Entry<ScriptEngine, Integer> candidate : scriptEngineCandidates.entrySet()) {
        if (candidate.getValue() < minimumMatchingIndex) {
            minimumMatchingIndex = candidate.getValue();
            bestScriptEngine = candidate.getKey();
        }
    }
    return bestScriptEngine;
}

Example 94 with ScriptEngine

use of javax.script.ScriptEngine in project yamcs-studio by yamcs.

the class ScriptStoreFactory method initJdkJSEngine.

/**
 * Must be called in UI Thread.
 *
 * @throws Exception
 */
private static void initJdkJSEngine() throws Exception {
    ScriptEngine engine = new ScriptEngineManager().getEngineByName("javascript");
    final Display display = Display.getCurrent();
    displayScriptEngineMap.put(display, engine);
}

Example 95 with ScriptEngine

use of javax.script.ScriptEngine in project camel by apache.

the class ScriptBuilder method tryCreateScriptEngine.

/**
     * Attemps to create the script engine for the given langauge using the classloader
     *
     * @return the engine, or <tt>null</tt> if not able to create
     */
private static ScriptEngine tryCreateScriptEngine(String language, ClassLoader classLoader) {
    ScriptEngineManager manager = new ScriptEngineManager(classLoader);
    ScriptEngine engine = null;
    // some script names has alias
    String[] names = getScriptNames(language);
    for (String name : names) {
        try {
            engine = manager.getEngineByName(name);
            if (engine != null) {
                break;
            }
        } catch (NoClassDefFoundError ex) {
            LOG.warn("Cannot load ScriptEngine for " + name + ". Please ensure correct JARs is provided on classpath (stacktrace in DEBUG logging).");
            // include stacktrace in debug logging
            LOG.debug("Cannot load ScriptEngine for " + name + ". Please ensure correct JARs is provided on classpath.", ex);
        }
    }
    if (engine == null) {
        engine = checkForOSGiEngine(language);
    }
    if (engine != null && isPython(language)) {
        ScriptContext context = engine.getContext();
        context.setAttribute("com.sun.script.jython.comp.mode", "eval", ScriptContext.ENGINE_SCOPE);
    }
    return engine;
}