001    /*
002     * Copyright 2005-2008 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.datadictionary.validation.fieldlevel;
017    
018    import org.kuali.rice.kns.datadictionary.exporter.ExportMap;
019    import org.kuali.rice.kns.datadictionary.validation.FieldLevelValidationPattern;
020    
021    /**
022     * Validation pattern for matching floating point numbers, optionally matching negative numbers
023     * 
024     * 
025     */
026    public class FloatingPointValidationPattern extends FieldLevelValidationPattern {
027        protected boolean allowNegative;
028    
029        /**
030         * @return allowNegative
031         */
032        public boolean getAllowNegative() {
033            return allowNegative;
034        }
035    
036        /**
037         * @param allowNegative
038         */
039        public void setAllowNegative(boolean allowNegative) {
040            this.allowNegative = allowNegative;
041        }
042    
043        /**
044         * Adds special handling to account for optional allowNegative
045         * 
046         * @see org.kuali.rice.kns.datadictionary.validation.ValidationPattern#getRegexString()
047         */
048        protected String getRegexString() {
049            StringBuffer regex = new StringBuffer();
050    
051            if (allowNegative) {
052                regex.append("-?");
053            }
054            regex.append(super.getRegexString());
055    
056            return regex.toString();
057        }
058    
059        /**
060         * @see org.kuali.rice.kns.datadictionary.validation.FieldLevelValidationPattern#getPatternTypeName()
061         */
062        protected String getPatternTypeName() {
063            return "floatingPoint";
064        }
065    
066    
067        /**
068         * @see org.kuali.rice.kns.datadictionary.validation.ValidationPattern#buildExportMap(java.lang.String)
069         */
070        public ExportMap buildExportMap(String exportKey) {
071            ExportMap exportMap = super.buildExportMap(exportKey);
072    
073            if (allowNegative) {
074                exportMap.set("allowNegative", "true");
075            }
076    
077            return exportMap;
078        }
079        
080            /**
081             * @see org.kuali.rice.kns.datadictionary.validation.FieldLevelValidationPattern#getValidationErrorMessageKey()
082             */
083            @Override
084            public String getValidationErrorMessageKey() {
085                    StringBuilder buf = new StringBuilder();
086                    buf.append("error.format.").append(getClass().getName());
087                    if (allowNegative) {
088                            buf.append(".allowNegative");
089                    }
090                    return buf.toString();
091            }
092    }