Java Script類代碼示例

import groovy.lang.Script; //導入依賴的package包/類
public GroovyResult execute(GroovyResult result, final Script groovyScript, final Map<String, Object> variables)
{
  if (variables != null) {
    final Binding binding = groovyScript.getBinding();
    for (final Map.Entry<String, Object> entry : variables.entrySet()) {
      binding.setVariable(entry.getKey(), entry.getValue());
    }
  }
  if (result == null) {
    result = new GroovyResult();
  }
  Object res = null;
  try {
    res = groovyScript.run();
  } catch (final Exception ex) {
    log.info("Groovy-Execution-Exception: " + ex.getMessage(), ex);
    return new GroovyResult(ex);
  }
  result.setResult(res);
  return result;
}
 

import groovy.lang.Script; //導入依賴的package包/類
@Override
public void compileToDir(ScriptSource source, ClassLoader classLoader, File classesDir, File metadataDir, CompileOperation<?> extractingTransformer,
                         Class<? extends Script> scriptBaseClass, Action<? super ClassNode> verifier) {
    Timer clock = Timers.startTimer();
    GFileUtils.deleteDirectory(classesDir);
    GFileUtils.mkdirs(classesDir);
    CompilerConfiguration configuration = createBaseCompilerConfiguration(scriptBaseClass);
    configuration.setTargetDirectory(classesDir);
    try {
        compileScript(source, classLoader, configuration, metadataDir, extractingTransformer, verifier);
    } catch (GradleException e) {
        GFileUtils.deleteDirectory(classesDir);
        GFileUtils.deleteDirectory(metadataDir);
        throw e;
    }

    logger.debug("Timing: Writing script to cache at {} took: {}", classesDir.getAbsolutePath(), clock.getElapsed());
}
 

import groovy.lang.Script; //導入依賴的package包/類
public Class<?> getScriptedObjectType(ScriptSource scriptSource) throws IOException, ScriptCompilationException {

        synchronized (this.scriptClassMonitor) {
            if (this.scriptClass == null || scriptSource.isModified()) {
                this.scriptClass = this.groovyClassLoader.parseClass(scriptSource.getScriptAsString());

                if (Script.class.isAssignableFrom(this.scriptClass)) {
                    // A Groovy script, probably creating an instance: let's execute it.
                    Object result = executeScript(this.scriptClass);
                    this.scriptResultClass = (result != null ? result.getClass() : null);
                } else {
                    this.scriptResultClass = this.scriptClass;
                }
            }
            return this.scriptResultClass;
        }
    }
 

import groovy.lang.Script; //導入依賴的package包/類
/**
 * Returns the builder object for creating new output variable value.
 */
protected void runScript(String mapperScript, Slurper slurper, Builder builder)
        throws ActivityException, TransformerException {

    CompilerConfiguration compilerConfig = new CompilerConfiguration();
    compilerConfig.setScriptBaseClass(CrossmapScript.class.getName());

    Binding binding = new Binding();
    binding.setVariable("runtimeContext", getRuntimeContext());
    binding.setVariable(slurper.getName(), slurper.getInput());
    binding.setVariable(builder.getName(), builder);
    GroovyShell shell = new GroovyShell(getPackage().getCloudClassLoader(), binding, compilerConfig);
    Script gScript = shell.parse(mapperScript);
    // gScript.setProperty("out", getRuntimeContext().get);
    gScript.run();
}
 

import groovy.lang.Script; //導入依賴的package包/類
private synchronized GenericKeyedObjectPool<String, Script> getPool() {
    if (pool == null) {
        GenericKeyedObjectPoolConfig poolConfig = new GenericKeyedObjectPoolConfig();
        poolConfig.setMaxTotalPerKey(-1);
        poolConfig.setMaxIdlePerKey(globalConfig.getGroovyEvaluationPoolMaxIdle());
        pool = new GenericKeyedObjectPool<>(
                new BaseKeyedPooledObjectFactory<String, Script>() {
                    @Override
                    public Script create(String key) throws Exception {
                        return createScript(key);
                    }

                    @Override
                    public PooledObject<Script> wrap(Script value) {
                        return new DefaultPooledObject<>(value);
                    }
                },
                poolConfig
        );
    }
    return pool;
}
 

import groovy.lang.Script; //導入依賴的package包/類
/**
 * Loads a precompiled script with the supplied ID. The script class file must 
 * be stored in the pre-compiled scripts folder (see {@link Configuration#getFolderCompiledScripts()}.
 * 
 * The method will return null if such a folder does not exist or if it does not contain
 * the desired script.
 * @param id
 * @return
 */
public static Script loadScript(final String id) {
	String fileName = id+".class";
	Script cached = cache.get(fileName);
	if (cached != null) {
		return cached;
	}
	try {
		URLClassLoader cl = getURLClassLoader();
		if (cl != null) {
	    	Script script = InvokerHelper.createScript(cl.loadClass(fileName), new Binding());
	    	cache.put(fileName, script);
	    	return script;
		}
	} catch (ClassNotFoundException | RuntimeException | MalformedURLException e) {
		// do nothing and just build the class from the text
	}
	return null; 
}
 

import groovy.lang.Script; //導入依賴的package包/類
@Override
public Object run(String dsl, Binding binding) {
    CompilerConfiguration compilerConfiguration = prepareCompilerConfiguration();
    ClassLoader classLoader = prepareClassLoader(AbstractDSLLauncher.class.getClassLoader());
    GroovyCodeSource groovyCodeSource = prepareGroovyCodeSource(dsl);

    // Groovy shell
    GroovyShell shell = new GroovyShell(
            classLoader,
            new Binding(),
            compilerConfiguration
    );

    // Groovy script
    Script groovyScript = shell.parse(groovyCodeSource);

    // Binding
    groovyScript.setBinding(binding);

    // Runs the script
    return run(groovyScript);
}
 

import groovy.lang.Script; //導入依賴的package包/類
/**
 * Runs a Groovy DSL script and returns the value returned by the script.
 * @param scriptReader For reading the script text
 * @param expectedType The expected type of the return value
 * @param parameters Parameters used by the script, null or empty if the script doesn't need any
 * @param <T> The expected type of the return value
 * @return The return value of the script, not null
 */
private static <T> T runGroovyDslScript(Reader scriptReader, Class<T> expectedType, Map<String, Object> parameters) {
  Map<String, Object> timeoutArgs = ImmutableMap.<String, Object>of("value", 2);
  ASTTransformationCustomizer customizer = new ASTTransformationCustomizer(timeoutArgs, TimedInterrupt.class);
  CompilerConfiguration config = new CompilerConfiguration();
  config.addCompilationCustomizers(customizer);
  config.setScriptBaseClass(SimulationScript.class.getName());
  Map<String, Object> bindingMap = parameters == null ? Collections.<String, Object>emptyMap() : parameters;
  //copy map to ensure that binding is mutable (for use in registerAliases)
  Binding binding = new Binding(Maps.newHashMap(bindingMap));
  registerAliases(binding);
  GroovyShell shell = new GroovyShell(binding, config);
  Script script = shell.parse(scriptReader);
  Object scriptOutput = script.run();
  if (scriptOutput == null) {
    throw new IllegalArgumentException("Script " + scriptReader + " didn't return an object");
  }
  if (expectedType.isInstance(scriptOutput)) {
    return expectedType.cast(scriptOutput);
  } else {
    throw new IllegalArgumentException("Script '" + scriptReader + "' didn't create an object of the expected type. " +
        "expected type: " + expectedType.getName() + ", " +
        "actual type: " + scriptOutput.getClass().getName() + ", " +
        "actual value: " + scriptOutput);
  }
}
 

import groovy.lang.Script; //導入依賴的package包/類
/**
 * Post process every stored request just before it get saved to disk
 *
 * @param sampler recorded http-request (sampler)
 * @param tree   HashTree (XML like data structure) that represents exact recorded sampler
 */
public void processScenario(HTTPSamplerBase sampler, HashTree tree, Arguments userVariables, JMeterRecorder recorder)
{
    Binding binding = new Binding();
    binding.setVariable(ScriptBindingConstants.LOGGER, LOG);
    binding.setVariable(ScriptBindingConstants.SAMPLER, sampler);
    binding.setVariable(ScriptBindingConstants.TREE, tree);
    binding.setVariable(ScriptBindingConstants.CONTEXT, recorder.getContext());
    binding.setVariable(ScriptBindingConstants.JSFLIGHT, JMeterJSFlightBridge.getInstance());
    binding.setVariable(ScriptBindingConstants.USER_VARIABLES, userVariables);
    binding.setVariable(ScriptBindingConstants.CLASSLOADER, classLoader);

    Script compiledProcessScript = ScriptEngine.getScript(getScenarioProcessorScript());
    if (compiledProcessScript == null)
    {
        return;
    }
    compiledProcessScript.setBinding(binding);
    LOG.info("Run compiled script");
    try {
        compiledProcessScript.run();
    } catch (Throwable throwable) {
        LOG.error(throwable.getMessage(), throwable);
    }
}
 

import groovy.lang.Script; //導入依賴的package包/類
public Object evaluate(final String expression, final Map<String, ?> values) throws ExpressionEvaluationException {
    LOG.debug("Evaluating Groovy expression: {1}", expression);
    try {
        final ObjectCache<String, Script> scriptCache = threadScriptCache.get();
        Script script = scriptCache.get(expression);
        if (script == null) {
            script = GROOVY_SHELL.parse(expression);
            scriptCache.put(expression, script);
        }

        final Binding binding = new Binding();
        for (final Entry<String, ?> entry : values.entrySet()) {
            binding.setVariable(entry.getKey(), entry.getValue());
        }
        script.setBinding(binding);
        return script.run();
    } catch (final Exception ex) {
        throw new ExpressionEvaluationException("Evaluating script with Groovy failed.", ex);
    }
}
 

import groovy.lang.Script; //導入依賴的package包/類
@SuppressWarnings("unchecked")
Script getGroovyScript(String id, String scriptText) /*throws SQLException*/ {
  if (shell == null) {
    throw new RuntimeException("Groovy Shell is not initialized: null");
  }
  try {
    Class<Script> clazz = scriptCache.get(scriptText);
    if (clazz == null) {
      String scriptName = id + "_" + Long.toHexString(scriptText.hashCode()) + ".groovy";
      clazz = (Class<Script>) shell.parse(scriptText, scriptName).getClass();
      scriptCache.put(scriptText, clazz);
    }

    Script script = (Script) clazz.newInstance();
    return script;
  } catch (Throwable t) {
    throw new RuntimeException("Failed to parse groovy script: " + t, t);
  }
}
 

import groovy.lang.Script; //導入依賴的package包/類
/**
 * Evaluate an expression.
 */
public Object eval(String source, int lineNo, int columnNo, Object script) throws BSFException {
    try {
        Class scriptClass = evalScripts.get(script);
        if (scriptClass == null) {
            scriptClass = loader.parseClass(script.toString(), source);
            evalScripts.put(script, scriptClass);
        } else {
            LOG.fine("eval() - Using cached script...");
        }
        //can't cache the script because the context may be different.
        //but don't bother loading parsing the class again
        Script s = InvokerHelper.createScript(scriptClass, context);
        return s.run();
    } catch (Exception e) {
        throw new BSFException(BSFException.REASON_EXECUTION_ERROR, "exception from Groovy: " + e, e);
    }
}
 

import groovy.lang.Script; //導入依賴的package包/類
/**
 * Process the input files.
 */
private void processFiles() throws CompilationFailedException, IOException, URISyntaxException {
    GroovyShell groovy = new GroovyShell(conf);
    setupContextClassLoader(groovy);

    Script s = groovy.parse(getScriptSource(isScriptFile, script));

    if (args.isEmpty()) {
        try(BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
            PrintWriter writer = new PrintWriter(System.out)) {

            processReader(s, reader, writer);
        }
    } else {
        Iterator i = args.iterator();
        while (i.hasNext()) {
            String filename = (String) i.next();
            //TODO: These are the arguments for -p and -i.  Why are we searching using Groovy script extensions?
            // Where is this documented?
            File file = huntForTheScriptFile(filename);
            processFile(s, file);
        }
    }
}
 

import groovy.lang.Script; //導入依賴的package包/類
/**
* Runs this server. There is typically no need to call this method, as the object's constructor
* creates a new thread and runs this object automatically. 
*/ 
public void run() {
    try {
        ServerSocket serverSocket = new ServerSocket(url.getPort());
        while (true) {
            // Create one script per socket connection.
            // This is purposefully not caching the Script
            // so that the script source file can be changed on the fly,
            // as each connection is made to the server.
            //FIXME: Groovy has other mechanisms specifically for watching to see if source code changes.
            // We should probably be using that here.
            // See also the comment about the fact we recompile a script that can't change.
            Script script = groovy.parse(source);
            new GroovyClientConnection(script, autoOutput, serverSocket.accept());
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}
 

import groovy.lang.Script; //導入依賴的package包/類
public Object build(Script script) {
    // this used to be synchronized, but we also used to remove the
    // metaclass.  Since adding the metaclass is now a side effect, we
    // don't need to ensure the meta-class won't be observed and don't
    // need to hide the side effect.
    MetaClass scriptMetaClass = script.getMetaClass();
    script.setMetaClass(new FactoryInterceptorMetaClass(scriptMetaClass, this));
    script.setBinding(this);
    Object oldScriptName = getProxyBuilder().getVariables().get(SCRIPT_CLASS_NAME);
    try {
        getProxyBuilder().setVariable(SCRIPT_CLASS_NAME, script.getClass().getName());
        return script.run();
    } finally {
        if(oldScriptName != null) {
            getProxyBuilder().setVariable(SCRIPT_CLASS_NAME, oldScriptName);
        } else {
            getProxyBuilder().getVariables().remove(SCRIPT_CLASS_NAME);
        }
    }
}