How to use

CompositeResourceLoader

in

org.beetl.core.resource

/**
 * 添加一个资源加载器
 * 
 * @param matcher {@link Matcher} 匹配器
 * @param resourceLoader {@link ResourceLoader} 匹配时对应的资源加载器
 * @return {@link ResourceLoaderBuilder}
 */
public ResourceLoaderBuilder add(Matcher matcher, ResourceLoader resourceLoader) {
  compositeResourceLoader.addResourceLoader(matcher, resourceLoader);
  return this;
}

/**
 * 创建引擎
 * 
 * @param config 模板配置
 * @return {@link GroupTemplate}
 */
private static GroupTemplate createEngine(TemplateConfig config) {
  if (null == config) {
    config = new TemplateConfig();
  }
  switch (config.getResourceMode()) {
  case CLASSPATH:
    return createGroupTemplate(new ClasspathResourceLoader(config.getPath(), config.getCharsetStr()));
  case FILE:
    return createGroupTemplate(new FileResourceLoader(config.getPath(), config.getCharsetStr()));
  case WEB_ROOT:
    return createGroupTemplate(new WebAppResourceLoader(config.getPath(), config.getCharsetStr()));
  case STRING:
    return createGroupTemplate(new StringTemplateResourceLoader());
  case COMPOSITE:
    //TODO 需要定义复合资源加载器
    return createGroupTemplate(new CompositeResourceLoader());
  default:
    return new GroupTemplate();
  }
}

@Override
public boolean exist(String key)
{
  ResourceLoaderKeyEntry rlke = this.match(key);
  if (rlke == null)
    return false;
  return rlke.getResourceLoader().exist(rlke.getNewKey());
}

/**
 * 创建引擎
 * 
 * @param config 模板配置
 * @return {@link GroupTemplate}
 */
private static GroupTemplate createEngine(TemplateConfig config) {
  if (null == config) {
    config = new TemplateConfig();
  }
  switch (config.getResourceMode()) {
  case CLASSPATH:
    return createGroupTemplate(new ClasspathResourceLoader(config.getPath(), config.getCharsetStr()));
  case FILE:
    return createGroupTemplate(new FileResourceLoader(config.getPath(), config.getCharsetStr()));
  case WEB_ROOT:
    return createGroupTemplate(new WebAppResourceLoader(config.getPath(), config.getCharsetStr()));
  case STRING:
    return createGroupTemplate(new StringTemplateResourceLoader());
  case COMPOSITE:
    //TODO 需要定义复合资源加载器
    return createGroupTemplate(new CompositeResourceLoader());
  default:
    return new GroupTemplate();
  }
}

@Override
public boolean exist(String key)
{
  ResourceLoaderKeyEntry rlke = this.match(key);
  if (rlke == null)
    return false;
  return rlke.getResourceLoader().exist(rlke.getNewKey());
}

/**
 * 添加一个资源加载器
 * 
 * @param matcher {@link Matcher} 匹配器
 * @param resourceLoader {@link ResourceLoader} 匹配时对应的资源加载器
 * @return {@link ResourceLoaderBuilder}
 */
public ResourceLoaderBuilder add(Matcher matcher, ResourceLoader resourceLoader) {
  compositeResourceLoader.addResourceLoader(matcher, resourceLoader);
  return this;
}

/**
 * 创建引擎
 * 
 * @param config 模板配置
 * @return {@link GroupTemplate}
 */
private static GroupTemplate createEngine(TemplateConfig config) {
  if (null == config) {
    config = new TemplateConfig();
  }
  switch (config.getResourceMode()) {
  case CLASSPATH:
    return createGroupTemplate(new ClasspathResourceLoader(config.getPath(), config.getCharsetStr()));
  case FILE:
    return createGroupTemplate(new FileResourceLoader(config.getPath(), config.getCharsetStr()));
  case WEB_ROOT:
    return createGroupTemplate(new WebAppResourceLoader(config.getPath(), config.getCharsetStr()));
  case STRING:
    return createGroupTemplate(new StringTemplateResourceLoader());
  case COMPOSITE:
    //TODO 需要定义复合资源加载器
    return createGroupTemplate(new CompositeResourceLoader());
  default:
    return new GroupTemplate();
  }
}

@Override
public Resource getResource(String key)
{
  ResourceLoaderKeyEntry rlke = this.match(key);
  if (rlke == null)
  {
    return new UnReachableResource(key, this);
  }
  return rlke.getResourceLoader().getResource(rlke.getNewKey());
}

/**
 * 添加一个资源加载器
 * 
 * @param matcher {@link Matcher} 匹配器
 * @param resourceLoader {@link ResourceLoader} 匹配时对应的资源加载器
 * @return {@link ResourceLoaderBuilder}
 */
public ResourceLoaderBuilder add(Matcher matcher, ResourceLoader resourceLoader) {
  compositeResourceLoader.addResourceLoader(matcher, resourceLoader);
  return this;
}

@Override
public Resource getResource(String key)
{
  ResourceLoaderKeyEntry rlke = this.match(key);
  if (rlke == null)
  {
    return new UnReachableResource(key, this);
  }
  return rlke.getResourceLoader().getResource(rlke.getNewKey());
}

/**
 * 添加一个资源加载器
 * @param matcher {@link Matcher} 匹配器
 * @param resourceLoader {@link ResourceLoader} 匹配时对应的资源加载器
 * @return {@link ResourceLoaderBuilder}
 */
public ResourceLoaderBuilder add(Matcher matcher, ResourceLoader resourceLoader){
  compositeResourceLoader.addResourceLoader(matcher, resourceLoader);
  return this;
}
 

@Override
public String getResourceId(Resource resource, String id)
{
  if (resource == null)
    return id;
  //判断如果是同一前缀，则需要考虑相对路径
  ResourceLoaderKeyEntry rlke = this.match(id);
  if (resource.getResourceLoader() == rlke.getResourceLoader())
  {
    return resource.getResourceLoader().getResourceId(resource, id);
  }
  else
  {
    return id;
  }
}

@Override
public String getResourceId(Resource resource, String id)
{
  if (resource == null)
    return id;
  //判断如果是同一前缀，则需要考虑相对路径
  ResourceLoaderKeyEntry rlke = this.match(id);
  if (resource.getResourceLoader() == rlke.getResourceLoader())
  {
    return resource.getResourceLoader().getResourceId(resource, id);
  }
  else
  {
    return id;
  }
}