Examples of cn.bran.japid.rendererloader.TemplateClassLoader

cn.bran.japid.rendererloader.TemplateClassLoader
The template class loader that detects changes and recompile on the fly. 1. whenever changes detected, clear the global class cache. 2. Only redefine the class to load, which will lead to define all the dependencies. All the dependencies must be defined by the same class classloader or InvalidAccessException. 3. The main program will call the loadClass once for each of the classes defined in one classloader. @author Bing Ran

    // the template may refer to model classes etc available only from the
    // parent class loader
    ClassLoader cl = _parentClassLoader == null ? JapidRenderer.class.getClassLoader() : _parentClassLoader;
    // do I need to new instance of TemplateClassLoader for each invocation?
    // likely...
    TemplateClassLoader classReloader = new TemplateClassLoader(cl);
    try {
      Class<JapidTemplateBaseWithoutPlay> loadClass = (Class<JapidTemplateBaseWithoutPlay>) classReloader
          .loadClass(rc.getClassName());
      rc.setClz(loadClass);
      return loadClass;
    } catch (ClassNotFoundException e) {
      throw new RuntimeException(e);

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        // shall I load them right away?
        // let's try
        ClassLoader cl = _parentClassLoader == null ? JapidRenderer.class.getClassLoader() : _parentClassLoader;
        TemplateClassLoader classReloader = new TemplateClassLoader(cl);
        for (RendererClass rc: classes.values()) {
          try {
            if (isDevMode())
              rc.setClz(null); // to enable JIT loading in dev mode
            else
              rc.setClz((Class<JapidTemplateBaseWithoutPlay>) classReloader.loadClass(rc.getClassName()));
          } catch (ClassNotFoundException e) {
            throw new RuntimeException(e);
          }
        }
        howlong("compile/load time for " + names.length + " classes", t);

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    setRefreshInterval(refreshInterval);
    _parentClassLoader = parentClassLoader;
    if (_parentClassLoader == null) {
      _parentClassLoader = JapidRenderer.class.getClassLoader();
    }
    crlr = new TemplateClassLoader(parentClassLoader);
    compiler = new RendererCompiler(classes, crlr);
    JapidRenderer.usePlay = usePlay;
    refreshClasses();
    inited = true;
    System.out.println("[Japid] initialized version " + VERSION + " in " + getOpMode() + " mode");

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    // always clear the mark to reload all
    for (String c : classes.keySet()) {
      RendererClass rendererClass = classes.get(c);
      rendererClass.setLastUpdated(0);
    }
    TemplateClassLoader classReloader = new TemplateClassLoader();
    try {
      Class<JapidTemplateBaseWithoutPlay> loadClass = (Class<JapidTemplateBaseWithoutPlay>) classReloader.loadClass(name);
      rc.setClz(loadClass);
      return loadClass;
    } catch (ClassNotFoundException e) {
      throw new RuntimeException(e);
    }

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    if (parentClassLoader == null)
      throw new RuntimeException("parentClassLoader is null");
    long now = System.currentTimeMillis();
    if (now - newClassLoaderCreated > 2000 || lastClassLoader == null) {
      newClassLoaderCreated = now;
      lastClassLoader = new TemplateClassLoader(parentClassLoader);
    }
    return lastClassLoader;
  }

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        for (String k : japidClasses.keySet()) {
          japidClasses.get(k).setClz(null);
        }


        TemplateClassLoader loader = getClassLoader();
        for (String cname : updatedClasses) {
          loader.loadClass(cname);
        }
      }
    } catch (Exception e) {
      if (e instanceof JapidTemplateException)
        throw (JapidTemplateException) e;

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        long t = System.currentTimeMillis();
        compiler.compile(names.toArray(new String[] {}));
        howlong("compile time for " + names.size() + " classes", t);


        TemplateClassLoader loader = getClassLoader();
        for (String cname : names) {
          loader.loadClass(cname);
        }
      }
    } catch (Exception e) {
      if (e instanceof JapidTemplateException)
        throw (JapidTemplateException) e;

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    JapidTemplateBaseWithoutPlay.globalTraceFileJson = yesno;


    // System.out.println("parent classloader: " + clr);
    parentClassLoader = clr;


    TemplateClassLoader classLoader = getClassLoader();


    compiler = new RendererCompiler(japidClasses, classLoader);


    // if (usePlay)
    // initErrorRenderer();

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      japidClasses.put(key, rc); // remember the current impl of class
                    // refresh will erase dynamic template
                    // class from this container.
      compiler.compile(new String[] { key });
      dynamicClasses.put(key, rc);
      TemplateClassLoader loader = getClassLoader();
      loader.loadClass(key);
    } catch (Exception e) {
      if (e instanceof JapidTemplateException)
        throw (JapidTemplateException) e;
      throw new RuntimeException(e);
    }

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    if (parentClassLoader == null)
      throw new RuntimeException("parentClassLoader is null");
    long now = System.currentTimeMillis();
    if (now - newClassLoaderCreated > 2000 || lastClassLoader == null) {
      newClassLoaderCreated = now;
      lastClassLoader = new TemplateClassLoader(parentClassLoader);
    }
    return lastClassLoader;
  }

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