numerictypes.java

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//--------------------------------------------------------------------------
//	Copyright (c) 1998-2004, Drew Davidson and Luke Blanshard
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//--------------------------------------------------------------------------
package ognl;


/**
 * This interface defines some useful constants for describing the various possible
 * numeric types of OGNL.
 * @author Luke Blanshard ([e-mail])
 * @author Drew Davidson ([e-mail])
 */
public interface NumericTypes
{
      // Order does matter here... see the getNumericType methods in ognl.g.

      /** Type tag meaning boolean. */
    int BOOL    = 0;
      /** Type tag meaning byte. */
    int BYTE    = 1;
      /** Type tag meaning char. */
    int CHAR    = 2;
      /** Type tag meaning short. */
    int SHORT   = 3;
      /** Type tag meaning int. */
    int INT     = 4;
      /** Type tag meaning long. */
    int LONG    = 5;
      /** Type tag meaning java.math.BigInteger. */
    int BIGINT  = 6;
      /** Type tag meaning float. */
    int FLOAT   = 7;
      /** Type tag meaning double. */
    int DOUBLE  = 8;
      /** Type tag meaning java.math.BigDecimal. */
    int BIGDEC  = 9;
      /** Type tag meaning something other than a number. */
    int NONNUMERIC = 10;

      /**
       * The smallest type tag that represents reals as opposed to integers.  You can see
       * whether a type tag represents reals or integers by comparing the tag to this
       * constant: all tags less than this constant represent integers, and all tags
       * greater than or equal to this constant represent reals.  Of course, you must also
       * check for NONNUMERIC, which means it is not a number at all.
       */
    int MIN_REAL_TYPE = FLOAT;
}