/*

  * Copyright 2007-2010 The Kuali Foundation

  *

  * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php

  *

  * 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.kuali.rice.krad.util;

 import java.util.Enumeration;

 import org.apache.commons.lang.StringUtils;

 import org.apache.commons.lang.math.NumberUtils;

 import org.kuali.rice.core.util.CollectionUtils;

 /**

  * Utility for that is used along with the tableRenderPagingBanner.tag.

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  *

  */

 public final class PagingBannerUtils {

         /** do not call. */

         private PagingBannerUtils() {

                 throw new UnsupportedOperationException("do not call");

         }

     /**

      * find the number string in a method to call parameter with the following format parameterPrefix.1 or

      * parameterPrefix.1.bleh

      * 

      * @param paramPrefix the 

      * @param parameterNames the parameter names.

      * @return the numerical value or -1

      */

     public static int getNumbericalValueAfterPrefix(String paramPrefix, Enumeration<String> parameterNames) {

             for (String parameterName : CollectionUtils.toIterable(parameterNames)) {

                     if (parameterName.startsWith(paramPrefix)) {

                     parameterName = WebUtils.endsWithCoordinates(parameterName) ? parameterName : parameterName + ".x";

                     String numberStr = StringUtils.substringBetween(parameterName, paramPrefix, ".");

                     if (NumberUtils.isDigits(numberStr)) {

                             return Integer.parseInt(numberStr);

                     }

             }

         }

             return -1;

     }

     /**

      * same as method above except for use when it is not feasible to use ordinals to identify columns -- for example,

      * if dynamic attributes may be used

      */

     public static String getStringValueAfterPrefix(String paramPrefix, Enumeration<String> parameterNames) {

         for (String parameterName : CollectionUtils.toIterable(parameterNames)) {

             if (parameterName.startsWith(paramPrefix)) {

                 parameterName = WebUtils.endsWithCoordinates(parameterName) ? parameterName : parameterName + ".x";

                 return StringUtils.substringBetween(parameterName, paramPrefix, ".");

             }

         }

         return "";

     }

 }