Keywords

Rules
A rule is the most important construct in the grammar of openVALIDATION. It consists of a condition and an action. With a validation rule, the action is always an error message. The easiest way to express such a rule is a IF / THEN construct.
Keyword
Description
IF
Selects the beginning of a rule and the next condition
THEN
Marks the beginning of an error message
AND
Selects the start of a new linked AND condition
OR
Selects the start of a new linked OR condition
Implicit Conditions / Alternative Rule Expression
Keyword
Description
MUST, SHOULD, HAVE, HAS
An indicator identifies an expression as a rule. The condition in such a MUST expression contains an Implicit Negation!
MUST NOT, MUSTN'T, SHOULD NOT, SHOULDN'T, HAS NOT, HASN'T, HAVE NOT, HAVEN'T
An indicator identifies an expression, as a rule
Relational operators
Relational operations always has a left and a right operand and the corresponding comparison operator.
Keyword
Description
IS, EQUAL, EQUALS
A relational operator '=' for numeric and string operands
ISN'T, IS NOT, NOT EQUAL, NOT EQUALS, NOT
A relational operator '!=' for numeric and string operands
LESS, SMALLER, LOWER, FEWER, SHORTER
A relational operator '<' for numeric operands
GREATER, BIGGER, LARGER, MORE, EXCEED, EXCEEDS, HIGHER
A relational operator '>' for numeric operands
GREATER OR EQUAL, GREATER OR EQUALS, LEAST, AT LEAST
A relational operator '>=' for numeric operands
LESS OR EQUAL, LESS OR EQUALS, MOST
A relational operator '<=' for numeric operands
EXIST, EXISTS, GIVEN
A relational operator for non-"null"
DOESN'T EXIST, DON'T EXIST, NOT EXIST
A relational operator for null
Arithmetic operations
Keyword
Description
+, PLUS
A mathematical operation for a simple addition
-, MINUS
A mathematical operation for a simple subtraction
*, TIMES
A mathematical operation for a simple multiplication
/, DIVIDED BY
A mathematical operation for a simple division
MOD, MODULO
A mathematical operation for a simple modulo calculation
Comment
You can write comments in the rulebook. These do not contain any logic.
Keyword
Description
COMMENT
A comment
Error message
Keyword
Description
ERRORCODE, WITH ERRORCODE, WITH CODE, WITH ERROR
Error messages often contain their own error codes for unique identification.

Structuring the set of rules

Rules integration

Last modified 4yr ago

Keyword	Description
`IF`	Selects the beginning of a rule and the next condition
`THEN`	Marks the beginning of an error message
`AND`	Selects the start of a new linked AND condition
`OR`	Selects the start of a new linked OR condition

Keyword	Description
`MUST, SHOULD, HAVE, HAS`	An indicator identifies an expression as a rule. The condition in such a MUST expression contains an Implicit Negation!
`MUST NOT, MUSTN'T, SHOULD NOT, SHOULDN'T, HAS NOT, HASN'T, HAVE NOT, HAVEN'T`	An indicator identifies an expression, as a rule

Keyword	Description
`IS, EQUAL, EQUALS`	A relational operator '=' for numeric and string operands
`ISN'T, IS NOT, NOT EQUAL, NOT EQUALS, NOT`	A relational operator '!=' for numeric and string operands
`LESS, SMALLER, LOWER, FEWER, SHORTER`	A relational operator '<' for numeric operands
`GREATER, BIGGER, LARGER, MORE, EXCEED, EXCEEDS, HIGHER`	A relational operator '>' for numeric operands
`GREATER OR EQUAL, GREATER OR EQUALS, LEAST, AT LEAST`	A relational operator '>=' for numeric operands
`LESS OR EQUAL, LESS OR EQUALS, MOST`	A relational operator '<=' for numeric operands
`EXIST, EXISTS, GIVEN`	A relational operator for non-"null"
`DOESN'T EXIST, DON'T EXIST, NOT EXIST`	A relational operator for null

Keyword	Description
`+, PLUS`	A mathematical operation for a simple addition
`-, MINUS`	A mathematical operation for a simple subtraction
`*, TIMES`	A mathematical operation for a simple multiplication
`/, DIVIDED BY`	A mathematical operation for a simple division
`MOD, MODULO`	A mathematical operation for a simple modulo calculation

Keyword	Description
`ERRORCODE, WITH ERRORCODE, WITH CODE, WITH ERROR`	Error messages often contain their own error codes for unique identification.