standard

This the standard function library for SAPL.

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length

length(ARRAY|TEXT|JSON value): For TEXT it returns the length of the text string. For ARRAY, it returns the number of elements in the array. For OBJECT, it returns the number of keys in the OBJECT. For NUMBER, BOOLEAN, or NULL, the function will return an error.

Example:

policy "example"
permit
  standard.length([1, 2, 3, 4]) == 4;
  standard.length("example") == 7;
  standard.length({ "key1" : 1, "key2" : 2}) == 2;

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toString

toString(value): Converts any value to a string representation.

Example:

policy "example"
permit
  standard.asString([1,2,3]) == "[1,2,3]";

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onErrorMap

onErrorMap(guardedExpression, fallbackExpression): If evaluation of guardedExpression results in an error, the fallback is returned instead. Otherwise the result of guardedExpression is returned.

Example:

policy "example"
permit
  standard.onErrorMap(1/0,999) == 999;

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