/*
 * Licensed Materials - Property of Rogue Wave Software, Inc. 
 * © Copyright Rogue Wave Software, Inc. 2014, 2017 
 * © Copyright IBM Corp. 2009, 2014
 * © Copyright ILOG 1996, 2009
 * All Rights Reserved.
 *
 * Note to U.S. Government Users Restricted Rights:
 * The Software and Documentation were developed at private expense and
 * are "Commercial Items" as that term is defined at 48 CFR 2.101,
 * consisting of "Commercial Computer Software" and
 * "Commercial Computer Software Documentation", as such terms are
 * used in 48 CFR 12.212 or 48 CFR 227.7202-1 through 227.7202-4,
 * as applicable.
 */

import java.io.IOException;

import ilog.views.IlvManager;
import ilog.views.maps.IlvMapFeatureIterator;
import ilog.views.maps.format.IlvMapFormatException;
import ilog.views.maps.format.IlvMapLoader;

/**
 * A class that extends IlvMapLoader to take the polygon reader into account.
 */
public class MyMapLoader extends IlvMapLoader {
  /**
   * Constructor
   */
  public MyMapLoader(IlvManager manager) {
    super(manager);
  }

  /**
   * Overrides the makeFeatureIterator method from super class
   */
  Override
  public IlvMapFeatureIterator makeFeatureIterator(String fileName) throws IOException {
    // Does superclass know the format of provided file ?
    IlvMapFeatureIterator result = super.makeFeatureIterator(fileName);
    // If not, try with the polygon reader
    if (result == null) {
      // test extension
      int length = fileName.length();
      // .pol are polylines files
      if (length > 4) {
        String suffix = fileName.substring(length - 4);
        if (suffix.toLowerCase(IlvMapLoader.getFileLocale()).equals(".pol")) {
          try {
            return new MyPolylineReader(fileName);
          } catch (IlvMapFormatException e) {
            return null;
          }
        }
      }
    }
    return result;
  }
}