@Override
  public boolean isNumeric() {
    return isInteger() || isNumber() || isBigNumber();
  }
@Test
  public void testIsNumeric() {
    int[] numTypes = { ValueMetaInterface.TYPE_INTEGER, ValueMetaInterface.TYPE_NUMBER, ValueMetaInterface.TYPE_BIGNUMBER };
    for ( int type : numTypes ) {
      assertTrue( Integer.toString( type ), ValueMetaBase.isNumeric( type ) );
    }

    int[] notNumTypes = { ValueMetaInterface.TYPE_INET, ValueMetaInterface.TYPE_BOOLEAN, ValueMetaInterface.TYPE_BINARY, ValueMetaInterface.TYPE_DATE, ValueMetaInterface.TYPE_STRING };
    for ( int type : notNumTypes ) {
      assertFalse( Integer.toString( type ), ValueMetaBase.isNumeric( type ) );
    }
  }