henning 2003/06/19 08:26:06
Added: src/java/org/apache/turbine/services/intake/validator
DoubleValidator.java
Log:
New validator for double fields
Patch donated by Colin Chalmers <[EMAIL PROTECTED]>
Revision Changes Path
1.1
jakarta-turbine-2/src/java/org/apache/turbine/services/intake/validator/DoubleValidator.java
Index: DoubleValidator.java
===================================================================
package org.apache.turbine.services.intake.validator;
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache Turbine" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache",
* "Apache Turbine", nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
import java.util.Map;
/**
* Validates Doubles with the following constraints in addition to those
* listed in NumberValidator and DefaultValidator.
*
* <table>
* <tr><th>Name</th><th>Valid Values</th><th>Default Value</th></tr>
* <tr><td>minValue</td><td>greater than Double.MIN_VALUE</td>
* <td> </td></tr>
* <tr><td>maxValue</td><td>less than Double.MAX_VALUE</td>
* <td> </td></tr>
* <tr><td>invalidNumberMessage</td><td>Some text</td>
* <td>Entry was not a valid number</td></tr>
* </table>
*
* @author <a href="mailto:[EMAIL PROTECTED]">John McNally</a>
* @author <a href="mailto:[EMAIL PROTECTED]">Colin Chalmers</a>
* @version $Id: DoubleValidator.java,v 1.1 2003/06/19 15:26:05 henning Exp $
*/
public class DoubleValidator
extends NumberValidator
{
/* Init the minValue to that for a Double */
private double minValue = Double.MIN_VALUE;
/* Init the maxValue to that for a Double */
private double maxValue = Double.MAX_VALUE;
/**
* Constructor to use when initialising Object
*
* @param paramMap
* @throws InvalidMaskException
*/
public DoubleValidator(Map paramMap)
throws InvalidMaskException
{
invalidNumberMessage = "Entry was not a valid Double";
init(paramMap);
}
/**
* Default Constructor
*/
public DoubleValidator()
{
}
/**
* Method to initialise Object
*
* @param paramMap
* @throws InvalidMaskException
*/
public void init(Map paramMap)
throws InvalidMaskException
{
super.init(paramMap);
Constraint constraint = (Constraint) paramMap.get("minValue");
if (constraint != null)
{
String param = constraint.getValue();
minValue = Double.parseDouble(param);
minValueMessage = constraint.getMessage();
}
constraint = (Constraint) paramMap.get("maxValue");
if (constraint != null)
{
String param = constraint.getValue();
maxValue = Double.parseDouble(param);
maxValueMessage = constraint.getMessage();
}
}
/**
* Determine whether a testValue meets the criteria specified
* in the constraints defined for this validator
*
* @param testValue a <code>String</code> to be tested
* @exception ValidationException containing an error message if the
* testValue did not pass the validation tests.
*/
public void assertValidity(String testValue)
throws ValidationException
{
super.assertValidity(testValue);
double d = 0.0D;
try
{
d = Double.parseDouble(testValue);
}
catch (RuntimeException e)
{
errorMessage = invalidNumberMessage;
throw new ValidationException(invalidNumberMessage);
}
if (d < minValue)
{
errorMessage = minValueMessage;
throw new ValidationException(minValueMessage);
}
if (d > maxValue)
{
errorMessage = maxValueMessage;
throw new ValidationException(maxValueMessage);
}
}
// ************************************************************
// ** Bean accessor methods **
// ************************************************************
/**
* Get the value of minValue.
*
* @return value of minValue.
*/
public double getMinValue()
{
return minValue;
}
/**
* Set the value of minValue.
*
* @param value Value to assign to minValue.
*/
public void setMinValue(double value)
{
this.minValue = value;
}
/**
* Get the value of maxValue.
*
* @return value of maxValue.
*/
public double getMaxValue()
{
return maxValue;
}
/**
* Set the value of maxValue.
*
* @param value Value to assign to maxValue.
*/
public void setMaxValue(double value)
{
this.maxValue = value;
}
}
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