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* Copyright 2000-2003 (C) Intalio, Inc. All Rights Reserved.
*
* $Id: LongValidator.java 5951 2006-05-30 22:18:48Z bsnyder $
*/
package org.exolab.castor.xml.validators;
import java.math.BigInteger;
import org.exolab.castor.xml.TypeValidator;
import org.exolab.castor.xml.ValidationContext;
import org.exolab.castor.xml.ValidationException;
/**
* The BigInteger Validation class. Handles validation for the java.math.BigInteger
* type.
*
* @author Werner Guttmann
* @version $Revision: 5951 $ $Date: 2003-03-03 02:57:21 -0700 (Mon, 03 Mar 2003) $
*/
public class BigIntegerValidator extends PatternValidator implements TypeValidator {
/** If true, we perform "minimum value" validation. */
private boolean _useMin = false;
/** If true, we perform "maximum value" validation. */
private boolean _useMax = false;
/** If true, we perform "fixed" validation. */
private boolean _useFixed = false;
/** Minimum value (inclusive) for this BigInteger. (Not used unless _useMin == true.) */
private BigInteger _min = BigInteger.valueOf(0);
/** Maximum value (inclusive) for this BigInteger. (Not used unless _useMax == true.) */
private BigInteger _max = BigInteger.valueOf(0);
/** Maximum number of digits in this BigInteger. (Not applied if < 0.) */
private int _totalDigits = -1;
/** Fixed value of this BigInteger. (Not used unless _useFixed == true.) */
private BigInteger _fixed = BigInteger.valueOf(0);
/**
* Creates a new BigIntegerValidator with no restrictions.
*/
public BigIntegerValidator() {
super();
} // -- BigIntegerValidator
/**
* Clears the fixed value for this BigIntegerValidator.
*/
public void clearFixed() {
_useFixed = false;
} // -- clearFixed
/**
* Clears the maximum value for this BigIntegerValidator.
*/
public void clearMax() {
_useMax = false;
} // -- clearMax
/**
* Clears the minimum value for this BigIntegerValidator.
*/
public void clearMin() {
_useMin = false;
} // -- clearMin
/**
* Returns the configured fixed value for BigInteger validation. Returns null if no fixed value
* has been configured.
*
* @return the fixed value to validate against.
*/
public BigInteger getFixed() {
if (_useFixed) {
return _fixed;
}
return null;
} // -- getFixed
/**
* Returns the configured maximum value for BigInteger validation. Returns null if no maximum has
* been configured.
*
* @return the maximum (inclusive) value to validate against.
*/
public BigInteger getMaxInclusive() {
if (_useMax) {
return _max;
}
return null;
} // -- getMaxInclusive
/**
* Returns the configured minimum value for BigInteger validation. Returns null if no minimum has
* been configured.
*
* @return the minimum (inclusive) value to validate against.
*/
public BigInteger getMinInclusive() {
if (_useMin) {
return _min;
}
return null;
} // -- getMinInclusive
/**
* Returns the configured maximum number of digits (inclusive) for BigInteger validation. Returns
* null if no maximum number of digits has been configured.
*
* @return the maximum number of digits to validate against.
*/
public Integer getTotalDigits() {
if (_totalDigits >= 0) {
return Integer.valueOf(_totalDigits);
}
return null;
} // -- getTotalDigits
/**
* Returns true if a fixed value to validate against has been set.
*
* @return true if a fixed value has been set.
*/
public boolean hasFixed() {
return _useFixed;
} // -- hasFixed
/**
* Sets the fixed value for BigInteger validation.
*
* NOTE: If maximum and/or minimum values have been set and the fixed value is not within that
* max/min range, then no BigInteger will pass validation. This is as according to the XML Schema
* spec.
*
* @param fixedValue the fixed value that a BigInteger validated with this validator must be equal
* to.
*/
public void setFixed(final BigInteger fixedValue) {
_useFixed = true;
this._fixed = fixedValue;
} // -- setFixed
/**
* Sets the minimum (exclusive) value for BigInteger validation. To pass validation, a BigInteger
* must be greater than this value.
*
* @param minValue the minimum (exclusive) value for BigInteger validation.
*/
public void setMinExclusive(final BigInteger minValue) {
_useMin = true;
_min = minValue.add(BigInteger.valueOf(1));
} // -- setMinExclusive
/**
* Sets the minimum (inclusive) value for BigInteger validation. To pass validation, a BigInteger
* must be greater than or equal to this value.
*
* @param minValue the minimum (inclusive) value for BigInteger validation.
*/
public void setMinInclusive(final BigInteger minValue) {
_useMin = true;
_min = minValue;
} // -- setMinInclusive
/**
* Sets the maximum (exclusive) value for BigInteger validation. To pass validation, a BigInteger
* must be less than this value.
*
* @param maxValue the maximum (exclusive) value for BigInteger validation.
*/
public void setMaxExclusive(final BigInteger maxValue) {
_useMax = true;
_max = maxValue.subtract(BigInteger.valueOf(-1));
} // -- setMaxExclusive
/**
* Sets the maximum (inclusive) value for BigInteger validation. To pass validation, a BigInteger
* must be less than or equal to this value.
*
* @param maxValue the maximum (inclusive) value for BigInteger validation.
*/
public void setMaxInclusive(final BigInteger maxValue) {
_useMax = true;
_max = maxValue;
} // -- setMaxInclusive
/**
* Sets the maximum number of digits for BigInteger validation. To pass validation, a BigInteger
* must have this many digits or fewer. Leading zeros are not counted.
*
* @param totalDig the maximum (inclusive) number of digits for BigInteger validation. (must be >
* 0)
*/
public void setTotalDigits(final int totalDig) {
if (totalDig <= 0) {
throw new IllegalArgumentException(
"IntegerValidator: the totalDigits facet must be positive");
}
_totalDigits = totalDig;
}
/**
* Validates the given Object.
*
* @param value the BigInteger to validate
* @param context the ValidationContext
* @throws ValidationException if the object fails validation.
*/
public void validate(final BigInteger value, final ValidationContext context)
throws ValidationException {
if (_useFixed && value != _fixed) {
String err = "BigInteger " + value + " is not equal to the fixed value: " + _fixed;
throw new ValidationException(err);
}
if (_useMin && value.compareTo(_min) == -1) {
String err = "BigInteger " + value + " is less than the minimum allowed value: " + _min;
throw new ValidationException(err);
}
if (_useMax && value.compareTo(_max) == 1) {
String err = "BigInteger " + value + " is greater than the maximum allowed value: " + _max;
throw new ValidationException(err);
}
if (_totalDigits != -1) {
int length = value.toString().length();
if (value.compareTo(new BigInteger("0")) == -1) {
length--;
}
if (length > _totalDigits) {
String err = "BigInteger " + value + " has too many digits -- must have " + _totalDigits
+ " digits or fewer.";
throw new ValidationException(err);
}
}
if (hasPattern()) {
super.validate(value.toString(), context);
}
} // -- validate
/**
* Validates the given Object.
*
* @param object the Object to validate
* @throws ValidationException if the object fails validation.
*/
public void validate(final Object object) throws ValidationException {
validate(object, (ValidationContext) null);
} // -- validate
/**
* Validates the given Object.
*
* @param object the Object to validate
* @param context the ValidationContext
* @throws ValidationException if the object fails validation.
*/
public void validate(final Object object, final ValidationContext context)
throws ValidationException {
if (object == null) {
String err = "BigIntegerValidator cannot validate a null object.";
throw new ValidationException(err);
}
BigInteger value = BigInteger.valueOf(0);
try {
value = (BigInteger) object;
} catch (Exception ex) {
String err = "Expecting a BigInteger, received instead: ";
err += object.getClass().getName();
throw new ValidationException(err);
}
validate(value, context);
} // -- validate
} // -- BigIntegerValidator