001    /**
002     * Copyright 2005-2011 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.krad.datadictionary.validation.constraint;
017    
018    import org.apache.commons.lang.StringUtils;
019    import org.kuali.rice.krad.uif.UifConstants;
020    
021    
022    /**
023     * Pattern for matching alpha characters
024     * 
025     * @author Kuali Rice Team (rice.collab@kuali.org)
026     */
027    public class AlphaPatternConstraint extends AllowCharacterConstraint {
028        protected boolean lowerCase = false;
029        protected boolean upperCase = false;
030    
031        /**
032         * @see org.kuali.rice.krad.datadictionary.validation.ValidationPattern#getRegexString()
033         */
034        protected String getRegexString() {
035            StringBuilder regexString = new StringBuilder("[A-Za-z");
036            /*
037             * This check must be first because we are removing the base 'A-Z' if lowerCase == true
038             */
039            if (lowerCase) {
040                regexString = new StringBuilder("[a-z");
041            }
042            else if(upperCase){
043                regexString = new StringBuilder("[A-Z");
044            }
045            regexString.append(this.getAllowedCharacterRegex());
046            regexString.append("]");
047    
048            return regexString.toString();
049        }
050    
051        /**
052         * A label key is auto generated for this bean if none is set. This generated message can be
053         * overridden through setLabelKey, but the generated message should cover most cases.
054         * 
055         * @see org.kuali.rice.krad.datadictionary.validation.constraint.BaseConstraint#getLabelKey()
056         */
057        @Override
058        public String getLabelKey() {
059            if (StringUtils.isEmpty(labelKey)) {
060                StringBuilder key = new StringBuilder("");
061                if (lowerCase) {
062                    return (UifConstants.Messages.VALIDATION_MSG_KEY_PREFIX + "alphaPatternLowerCase");
063                } else if(upperCase){
064                    return (UifConstants.Messages.VALIDATION_MSG_KEY_PREFIX + "alphaPatternUpperCase");
065                }
066                else{
067                    return (UifConstants.Messages.VALIDATION_MSG_KEY_PREFIX + "alphaPattern");
068                }
069            }
070            return labelKey;
071        }
072            
073        /**
074         * @return the lowerCase
075         */
076        public boolean isLowerCase() {
077            return this.lowerCase;
078        }
079    
080        /**
081         * Only allow lowerCase characters. DO NOT use with upperCase option, no flags set for case
082         * means both upper and lower case are allowed.
083         * @param lowerCase the lowerCase to set
084         */
085        public void setLowerCase(boolean lowerCase) {
086            this.lowerCase = lowerCase;
087        }
088    
089        public boolean isUpperCase() {
090            return upperCase;
091        }
092    
093        /**
094         * Only allow upperCase characters.  DO NOT use with lowerCase option, no flags set for case
095         * means both upper and lower case are allowed.
096         * @param lowerCase the lowerCase to set
097         */
098        public void setUpperCase(boolean upperCase) {
099            this.upperCase = upperCase;
100        }
101    
102    }