reloadhelperactionfactoryproxy.java

webwork source

package webwork.action.factory;

import java.util.StringTokenizer;
import java.util.List;
import java.util.ArrayList;
import java.net.URL;
import java.io.File;

import webwork.action.Action;
import webwork.config.Configuration;
import webwork.util.ClassLoaderUtils;

/**
 * User: hani
 * Date: Nov 7, 2003
 * Time: 11:38:42 AM
 */
public class ReloadHelperActionFactoryProxy extends ActionFactoryProxy
{
  private File[] files;
  private long[] lastModified;

  public ReloadHelperActionFactoryProxy(ActionFactory aFactory)
  {
    super(aFactory);
    StringTokenizer configFiles = new StringTokenizer((String)Configuration.get("webwork.configuration.xml"), ",");
    List l = new ArrayList(configFiles.countTokens());
    while(configFiles.hasMoreTokens())
    {
       String name = configFiles.nextToken();
      URL fileUrl = ClassLoaderUtils.getResource(name+".xml", ReloadHelperActionFactoryProxy.class);
      if(fileUrl!=null)
      {
        File file = new File(fileUrl.getFile());
        if(file.exists())
          l.add(file);
      }
    }
    files = new File[l.size()];
    //lets check when they were all modified
    l.toArray(files);
    lastModified = new long[files.length];
    for(int i = 0; i < files.length; i++)
    {
      lastModified[i] = files[i].lastModified();
    }
  }

  public Action getActionImpl(String aName) throws Exception
  {
    for(int i = 0; i < files.length; i++)
    {
      if(files[i].lastModified() > lastModified[i])
      {
        lastModified[i] = files[i].lastModified();
        flushCaches();
      }
    }
    return getNextFactory().getActionImpl(aName);
  }
}