/*
* Adito
*
* Copyright (C) 2003-2006 3SP LTD. All Rights Reserved
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package com.adito.input.validators;
import java.util.Properties;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.adito.boot.CodedException;
import com.adito.boot.PropertyDefinition;
import com.adito.boot.PropertyValidator;
import com.adito.boot.ReplacementEngine;
import com.adito.boot.Replacer;
import com.adito.core.CoreException;
import com.adito.core.stringreplacement.VariableReplacement;
/**
* {@link PropertyValidator} implementation that excepts two <i>Validator properties</i>.
* <ul>
* <li><b>minValue</b> - The minimum integer value. This defaults to <code>zero</code></li>
* <li><b>maxValue</b> - The maximum integer value. This defaults to {@link Integer#MAX_VALUE}.</li>
* </ul>
*/
public class IntegerValidator implements PropertyValidator {
final static Log log = LogFactory.getLog(IntegerValidator.class);
protected int defaultMin = 0;
protected int defaultMax = Integer.MAX_VALUE;
/**
* Constructor.
*
* @param defaultMin default minimum value
* @param defaultMax default maximum value
*/
public IntegerValidator(int defaultMin, int defaultMax) {
this.defaultMin = defaultMin;
this.defaultMax = defaultMax;
}
/**
* Constructor. The by default uses {@link Integer#MIN_VALUE} and
* {@link Integer#MAX_VALUE}.
*
*/
public IntegerValidator() {
}
/* (non-Javadoc)
* @see com.adito.boot.PropertyValidator#validate(com.adito.boot.PropertyDefinition, java.lang.String, java.util.Properties)
*/
public void validate(PropertyDefinition definition, String value, Properties properties) throws CodedException {
// Get the range
int min = defaultMin;
try {
if(properties != null && properties.containsKey("minValue"))
min = Integer.parseInt(properties.getProperty("minValue"));
}
catch(NumberFormatException nfe) {
log.error("Failed to get minimum value for validator.", nfe);
throw new CoreException(ErrorConstants.ERR_INTERNAL_ERROR, ErrorConstants.CATEGORY_NAME, ErrorConstants.BUNDLE_NAME, null, value);
}
int max = defaultMax;
try {
if(properties != null && properties.containsKey("maxValue"))
max = Integer.parseInt(properties.getProperty("maxValue"));
}
catch(NumberFormatException nfe) {
log.error("Failed to get maximum value for validator.", nfe);
throw new CoreException(ErrorConstants.ERR_INTERNAL_ERROR, ErrorConstants.CATEGORY_NAME, ErrorConstants.BUNDLE_NAME, null, value);
}
/* We may support replacement variables so
* to validate we must replace with the minimum value
*/
if(properties != null && "true".equalsIgnoreCase(properties.getProperty("replacementVariables"))) {
Replacer r = new Replacer() {
public String getReplacement(Pattern pattern, Matcher matcher, String replacementPattern) {
return replacementPattern;
}
};
ReplacementEngine re = new ReplacementEngine();
re.addPattern(VariableReplacement.VARIABLE_PATTERN, r, String.valueOf(min));
value = re.replace(value);
}
// Validate
try {
int i = Integer.parseInt(value);
if(i < min || i > max) {
throw new CoreException(ErrorConstants.ERR_INTEGER_OUT_OF_RANGE, ErrorConstants.CATEGORY_NAME, ErrorConstants.BUNDLE_NAME, null, String.valueOf(min), String.valueOf(max), value, null);
}
}
catch(NumberFormatException nfe) {
throw new CoreException(ErrorConstants.ERR_NOT_AN_INTEGER, ErrorConstants.CATEGORY_NAME, ErrorConstants.BUNDLE_NAME, null, String.valueOf(min), String.valueOf(max), value, null);
}
}
}