001 /** 002 The contents of this file are subject to the Mozilla Public License Version 1.1 003 (the "License"); you may not use this file except in compliance with the License. 004 You may obtain a copy of the License at http://www.mozilla.org/MPL/ 005 Software distributed under the License is distributed on an "AS IS" basis, 006 WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the 007 specific language governing rights and limitations under the License. 008 009 The Original Code is "RegexPrimitiveRule.java". Description: 010 "A PrimitiveTypeRule that validates primitive values using a regular expression" 011 012 The Initial Developer of the Original Code is University Health Network. Copyright (C) 013 2004. All Rights Reserved. 014 015 Contributor(s): ______________________________________. 016 017 Alternatively, the contents of this file may be used under the terms of the 018 GNU General Public License (the ?GPL?), in which case the provisions of the GPL are 019 applicable instead of those above. If you wish to allow use of your version of this 020 file only under the terms of the GPL and not to allow others to use your version 021 of this file under the MPL, indicate your decision by deleting the provisions above 022 and replace them with the notice and other provisions required by the GPL License. 023 If you do not delete the provisions above, a recipient may use your version of 024 this file under either the MPL or the GPL. 025 */ 026 package ca.uhn.hl7v2.validation.impl; 027 028 import java.util.regex.Matcher; 029 import java.util.regex.Pattern; 030 031 import ca.uhn.hl7v2.validation.PrimitiveTypeRule; 032 033 /** 034 * A <code>PrimitiveTypeRule</code> that validates primitive values 035 * using a regular expression. 036 * 037 * @author <a href="mailto:bryan.tripp@uhn.on.ca">Bryan Tripp</a> 038 * @version $Revision: 1.1 $ updated on $Date: 2007/02/19 02:24:40 $ by $Author: jamesagnew $ 039 */ 040 public class RegexPrimitiveRule implements PrimitiveTypeRule { 041 042 private final Pattern myPattern; 043 private final String mySectionReference; 044 045 /** 046 * @param theRegex a regular expression against which to validate primitive 047 * values 048 * @param theSectionReference to be returned by <code>getSectionReference()</code> 049 */ 050 public RegexPrimitiveRule(String theRegex, String theSectionReference) { 051 myPattern = Pattern.compile(theRegex); 052 mySectionReference = theSectionReference; 053 } 054 055 /** 056 * Empty string, null, and the HL7 explicit null (two double-quotes) are passed. 057 * 058 * @see ca.uhn.hl7v2.validation.PrimitiveTypeRule#test(java.lang.String) 059 */ 060 public boolean test(String value) { 061 if (value == null || value.equals("\"\"") || value.equals("")) { 062 return true; 063 } else { 064 Matcher matcher = myPattern.matcher(value); 065 return matcher.matches(); 066 } 067 } 068 069 /** 070 * @see ca.uhn.hl7v2.validation.Rule#getDescription() 071 */ 072 public String getDescription() { 073 return "Matches the regular expression " + myPattern.pattern(); 074 } 075 076 /** 077 * @see ca.uhn.hl7v2.validation.Rule#getSectionReference() 078 */ 079 public String getSectionReference() { 080 return mySectionReference; 081 } 082 083 /** 084 * @see ca.uhn.hl7v2.validation.PrimitiveTypeRule#correct(java.lang.String) 085 */ 086 public String correct(String value) { 087 return value; 088 } 089 090 }