001    /**
002     * Copyright 2005-2012 The Kuali Foundation
003     *
004     * Licensed under the Educational Community License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.opensource.org/licenses/ecl2.php
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    package org.kuali.rice.kns.util;
017    
018    import org.apache.commons.lang.NumberUtils;
019    import org.apache.commons.lang.StringUtils;
020    import org.kuali.rice.core.api.util.collect.CollectionUtils;
021    
022    import java.util.Enumeration;
023    
024    /**
025     * Utility for that is used along with the tableRenderPagingBanner.tag.
026     * 
027     * @author Kuali Rice Team (rice.collab@kuali.org)
028     *
029     */
030    public final class PagingBannerUtils {
031    
032            /** do not call. */
033            private PagingBannerUtils() {
034                    throw new UnsupportedOperationException("do not call");
035            }
036            
037        /**
038         * find the number string in a method to call parameter with the following format parameterPrefix.1 or
039         * parameterPrefix.1.bleh
040         * 
041         * @param paramPrefix the 
042         * @param parameterNames the parameter names.
043         * @return the numerical value or -1
044         */
045        public static int getNumbericalValueAfterPrefix(String paramPrefix, Enumeration<String> parameterNames) {
046                    
047            for (String parameterName : CollectionUtils.toIterable(parameterNames)) {
048                    if (parameterName.startsWith(paramPrefix)) {
049                    parameterName = WebUtils.endsWithCoordinates(parameterName) ? parameterName : parameterName + ".x";
050                    String numberStr = StringUtils.substringBetween(parameterName, paramPrefix, ".");
051                    if (NumberUtils.isDigits(numberStr)) {
052                            return Integer.parseInt(numberStr);
053                    }
054                }
055            }
056    
057            return -1;
058        }
059    
060        /**
061         * same as method above except for use when it is not feasible to use ordinals to identify columns -- for example,
062         * if dynamic attributes may be used
063         */
064        public static String getStringValueAfterPrefix(String paramPrefix, Enumeration<String> parameterNames) {
065            for (String parameterName : CollectionUtils.toIterable(parameterNames)) {
066                if (parameterName.startsWith(paramPrefix)) {
067                    parameterName = WebUtils.endsWithCoordinates(parameterName) ? parameterName : parameterName + ".x";
068                    return StringUtils.substringBetween(parameterName, paramPrefix, ".");
069                }
070            }
071    
072            return "";
073        }
074    }