WebResourseResolver.java :  » Web-Framework » roma-webwizard » org » romaframework » aspect » view » echo2 » Java Open Source

package org.romaframework.aspect.view.echo2;

import java.io.File;
import java.util.HashMap;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.romaframework.core.Utility;
import org.romaframework.core.config.RomaApplicationContext;

public class WebResourseResolver {
  private HashMap<String, String>  cache                = new HashMap<String, String>();
  public static String            BASE_FOLDER_NAME    = "base";
  public static String            CUSTOM_FOLDER_NAME  = "custom";
  public static final char        SEPARATOR            = '/';
  private String                  basePath;
  private static Log              log                  = LogFactory.getLog(WebResourseResolver.class);

  public String getResource(String iName) {
    String path = cache.get(iName);
    if (path != null)
      return path;

    synchronized (cache) {
      if (basePath == null) {
        basePath = RomaApplicationContext.getApplicationPath();

        if (basePath.charAt(basePath.length() - 1) != SEPARATOR)
          // APPEND THE SEPARATOR
          basePath += SEPARATOR;
      }

      int pos = iName.indexOf(SEPARATOR);
      String first = pos > -1 ? iName.substring(0, pos) : "";
      String second = pos > -1 ? iName.substring(pos + 1) : iName;

      File file = new File(basePath + first + "/" + CUSTOM_FOLDER_NAME + "/" + second);

      log.info("[WebResourseResolver.getResource] Try to resolving path: " + iName + " to: " + file.getAbsolutePath());

      if (!file.exists()) {
        file = new File(basePath + first + "/" + BASE_FOLDER_NAME + "/" + second);
        log.info("[WebResourseResolver.getResource] Try to resolving path: " + iName + " to: " + file.getAbsolutePath());
        if (!file.exists())
          return null;
      }

      log.info("[WebResourseResolver.getResource] Resolved path: " + iName + " to: " + file.getAbsolutePath());

      path = file.getAbsolutePath().substring(basePath.length());
      path = Utility.getUniversalResourcePath(path);

      cache.put(iName, path);
    }

    return path;
  }
}