org.beangle.struts2.view.template.HierarchicalTemplateLoader Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of beangle-struts2-view Show documentation

There is a newer version: 3.5.3

/*
 * Beangle, Agile Development Scaffold and Toolkit
 *
 * Copyright (c) 2005-2014, Beangle Software.
 *
 * Beangle is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Beangle is distributed in the hope that it will be useful.
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Beangle.  If not, see .
 */
package org.beangle.struts2.view.template;

import java.io.IOException;
import java.io.Reader;
import java.util.HashSet;

import freemarker.cache.TemplateLoader;

/**
 * 搜索带有固定前缀下的资源，排除/org/和/com/
 * 
 * @author chaostone
 */
public class HierarchicalTemplateLoader implements TemplateLoader {

  final AbstractTemplateEngine templateEngine;

  final TemplateLoader loader;

  public HierarchicalTemplateLoader(AbstractTemplateEngine templateEngine, TemplateLoader loader) {
    this.templateEngine = templateEngine;
    this.loader = loader;
  }

  public Object findTemplateSource(String name) throws IOException {
    String resource = name;
    Object source = loader.findTemplateSource(resource);
    if (null == source) {
      HashSet searched = new HashSet(3);
      searched.add(resource);
      do {
        resource = templateEngine.getParentTemplate(resource);
        if (null == resource ||searched.contains(resource)) break;
        source = loader.findTemplateSource(resource);
        searched.add(resource);
      } while (null == source);
    }
    return source;
  }

  public long getLastModified(Object templateSource) {
    return loader.getLastModified(templateSource);
  }

  public Reader getReader(Object templateSource, String encoding) throws IOException {
    return loader.getReader(templateSource, encoding);
  }

  public void closeTemplateSource(Object templateSource) throws IOException {
    loader.closeTemplateSource(templateSource);
  }

}