Version CloverDX 5.14.2

Literals

Literals serve to write values of any data type.

Literal Description Declaration syntax Example
Table 79. Literals

integer

digits representing integer number

[0-9]+

95623

long integer

digits representing an integer number with absolute value even greater than 231, but less than 263

[0-9]+L?

257L, or 9562307813123123L

hexadecimal integer

digits and letters representing an integer number in hexadecimal form

0x[0-9A-F]+

0xA7B0

octal integer

digits representing an integer number in octal form

0[0-7]*

0644

number (double)

a floating point number represented by 64bits in double precision format

.[0-9]

456.123

decimal

digits representing a decimal number

[0-9]+.[0-9]+D

123.456D

double quoted string

string value/literal enclosed in double quotes; escaped characters [\n,\r,\t, \\, \", \b] get translated into corresponding control chars

"…​anything except ["]…​"

"hello\tworld\n\r"

single quoted string

string value/literal enclosed in single quotes; only one escaped character [\'] gets translated into corresponding char [']

'…​anything except [']…​'

'hello\tworld\n\r'

list

list of expressions where all elements are of the same data type

[ <element> (, <element>)* ]

[] for an empty list

[10, 16 + 1, 31] or ['hello', "world" ]

map

list of key-value mappings where all keys and all values are expressions of the same data type

{ <key> → <value> (, <key> → <value>)* }

{} for an empty map

{ "a" → 1, "bb" → 2 }

date

date value

this mask is expected: yyyy-MM-dd

2008-01-01

datetime

datetime value

this mask is expected: yyyy-MM-dd HH:mm:ss

2008-01-01 18:55:00

You cannot use any literal for the byte data type. If you want to write a byte value, you must use any of the conversion functions that return byte and apply it on an argument value.

For information on these conversion functions, see Conversion Functions.

Remember that if you need to assign a decimal value to a decimal field, you should use decimal literal. Otherwise, such number would not be decimal, it would be a double number.

For example:

  1. Decimal value to a decimal field (correct and accurate)

    // correct - assign decimal value to decimal field

    myRecord.decimalField = 123.56d;

  2. Double value to a decimal field (possibly inaccurate)

    // possibly inaccurate - assign double value to decimal field

    myRecord.decimalField = 123.56;

The latter might produce inaccurate results.