// Copyright (c) 2003-2012, Jodd Team (jodd.org). All Rights Reserved.
package jodd.typeconverter.impl;
import jodd.typeconverter.TypeConversionException;
import jodd.typeconverter.TypeConverter;
import java.math.BigInteger;
/**
* Converts given object to <code>BigInteger</code>.
* Conversion rules:
* <li><code>null</code> value is returned as <code>null</code>
* <li>object of destination type is simply casted
* <li>object is converted to string, trimmed, and then converted if possible
*/
public class BigIntegerConverter implements TypeConverter<BigInteger> {
public BigInteger convert(Object value) {
if (value == null) {
return null;
}
if (value instanceof BigInteger) {
return (BigInteger) value;
}
if (value instanceof Number) {
return new BigInteger(String.valueOf(((Number)value).longValue()));
}
try {
return new BigInteger(value.toString().trim());
} catch (NumberFormatException nfex) {
throw new TypeConversionException(value, nfex);
}
}
}
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