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/*******************************************************************************
* Copyright (c) 2003, 2007 s IT Solutions AT Spardat GmbH .
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* s IT Solutions AT Spardat GmbH - initial API and implementation
*******************************************************************************/
/*
* @(#) $Id: AStringFmtRangeRegEx.java 2093 2007-11-28 14:23:36Z s3460 $
*
* Copyright 2004/2005 by SPARDAT Sparkassen-Datendienst Ges.m.b.H.,
* A-1110 Wien, Geiselbergstr.21-25.
* All rights reserved.
*
*/
package at.spardat.enterprise.fmt;
import java.util.regex.Pattern;
/**
* A formatter based at java.util.regex.
*
* This class defines a string formatter which accepts, min and max lenght,
* valid range of allowed characters, style 'mandatory' and a regular expression
* pattern which is validated.
* This class is extended from AStringFmtRange, see there for the definition of valid characters (the range).
* Additional the input is validated by a regular expression pattern, for this the
* java.util.regex classes are used, see there for regular expression usage.
* For the error message shown in the case of a negative evaluation of the regular expression
* an resource bundle and key have to be specified.
*
* The class FmtFactory (used by the XMA GUI Designer) constructs a AStringFmtRangeRegEx
* from a String like this:
* sre,(minLen),(maxLen),(range),(m&ul&lc),bundleKey,resBundle,regex
* The values in brackets can be empty strings, all commas are mandatory.
*
* An example for email validation:
* "sre,,15,a-e@.,m,NoEmail,at.spardat.enterprise.fmt.test.FmtTestErrors,\\w+(\\.\\w+)*@\\w+\\.\\w+"
*
* @author s3460
* @since version_number
*/
public class AStringFmtRangeRegEx extends AStringFmtRange {
/**
* The error message key
*/
private String bundleKey;
/**
* The error message ressource bundel
*/
private String resBundle;
/**
* The regex pattern
*/
private Pattern pattern;
/**
* Returns a String formatter to limit the input length, the range of valid characters
* and a regular expression (according to the java.util.regex packet) against which the input is vlaidated.
*
* @param maxLen the maximum length of an accepted string. May be -1, then
* the length is unlimited.
* @param range a string denoting one or more character ranges.
* See {@link AStringFmtRange} for a syntax description.
* @param style may be MANDATORY which forces the input not be empty or
* UPPER_CASE or LOWER_CASE.
* @param regex a regular expression according to the java.util.regex packet.
* The input string is validated agianst this expression.
* @param bundleKey the resource bundle key of the error message,
* which is shown in the case of a negative evalution of the regular expression.
* @param resBundle the resource bundle name (without locale) from which the error message
* for negative evalution of the regular expression is taken.
*/
public AStringFmtRangeRegEx(int maxLen, String range, int style, String regex, String bundleKey, String resBundle) {
super(maxLen, range, style);
this.pattern = Pattern.compile(regex);
this.bundleKey = bundleKey;
this.resBundle = resBundle;
}
/**
* Returns a String formatter to limit the input length, the range of valid characters
* and a regular expression (according to the java.util.regex packet) against which the input is vlaidated.
*
* @param maxLen the maximum length of an accepted string. May be -1, then
* the length is unlimited.
* @param range a string denoting one or more character ranges.
* See {@link AStringFmtRange} for a syntax description. *
* @param regex a regular expression according to the java.util.regex packet.
* The input string is validated agianst this expression.
* @param bundleKey the resource bundle key of the error message,
* which is shown in the case of a negative evalution of the regular expression.
* @param resBundle the resource bundle name from which the error message
* for negative evalution of the regular expression is taken.
*/
public AStringFmtRangeRegEx(int maxLen, String range, String regex, String bundleKey, String resBundle) {
super(maxLen, range);
this.pattern = Pattern.compile(regex);
this.bundleKey = bundleKey;
this.resBundle = resBundle;
}
/**
* @see at.spardat.enterprise.fmt.IFmt#isLegalExternalChar(char)
*/
public boolean isLegalExternalChar (char aChar) {
if(getNumRanges() == 0){
return true;
} else{
return super.isLegalExternalChar(aChar);
}
}
/**
* @see at.spardat.enterprise.fmt.IFmt#parse(String)
*/
public String parse (String external) throws FmtParseException {
super.parse (external); // throws an exception on violations of superclass restrictions
if (external == null || external.length() == 0) return "";
if(!this.pattern.matcher(external).matches()){
FmtParseException ex = new FmtParseException (bundleKey);
ex.setResBundle(resBundle);
throw ex;
}
return external;
}
}
