UrlParams.java

/*
 * Copyright 2014-2016 CyberVision, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.kaaproject.kaa.server.admin.shared.util;

import com.google.gwt.http.client.URL;

import java.util.Map;

public class UrlParams {

  public static final String RESET_PASSWORD = "resetPassword";
  public static final int PASSWORD_RESET_HASH_LENGTH = 128;
  public static final String PARAMS_SEPARATOR = "&";

  private UrlParams() {
  }

  /**
   * Transform params map of request to URL link.
   *
   * @param paramsMap the params map
   * @return URL string
   */
  public static String generateParamsUrl(Map<String, String> paramsMap) {
    String paramsUrl = "";
    for (String key : paramsMap.keySet()) {
      String val = paramsMap.get(key);
      if (paramsUrl.length() > 0) {
        paramsUrl += PARAMS_SEPARATOR;
      }
      paramsUrl += key + "=" + URL.encodeQueryString(val);
    }
    return paramsUrl;
  }

  /**
   * Get request params from URL string and put them in map.
   *
   * @param paramsMap the params map
   */
  public static void updateParamsFromUrl(Map<String, String> paramsMap,
                                         String paramsUrl) {
    if (paramsUrl != null && paramsUrl.trim().length() > 0) {
      String[] params = paramsUrl.split(PARAMS_SEPARATOR);
      for (String param : params) {
        String[] keyVal = param.split("=");
        if (keyVal != null && keyVal.length == 2) {
          paramsMap.put(keyVal[0], URL.decodeQueryString(keyVal[1]));
        }
      }
    }
  }

}