import java.math.BigDecimal;

import java.math.BigInteger;  

public class MathUtils {  

    public static BigDecimal getBigDecimal( Object value ) {

        BigDecimal ret = null;

        if( value != null ) {

            if( value instanceof BigDecimal ) {

                ret = (BigDecimal) value;

            } else if( value instanceof String ) {

                ret = new BigDecimal( (String) value );

            } else if( value instanceof BigInteger ) {

                ret = new BigDecimal( (BigInteger) value );

            } else if( value instanceof Number ) {

                ret = new BigDecimal( ((Number)value).doubleValue() );

            } else {

                throw new ClassCastException("Not possible to coerce ["+value+"] from class "+value.getClass()+" into a BigDecimal.");

            }

        }

        return ret;

    }  

}