ballerina/lang.error Ballerina library

function cause(error e) returns error?

Returns the error's cause.

error fileNotFoundError = error("file not found", file = "test.bal");
fileNotFoundError.cause() is () ⇒ true
error ioError = error("IO error", fileNotFoundError);
ioError.cause() ⇒ error("file not found",file="test.bal")

function detail(error e) returns readonly & DetailType

Returns the error's detail record.

error("file not found", file = "test.bal").detail() ⇒ {"file":"test.bal"}

The returned value will be immutable.

function message(error e) returns string

Returns the error's message.

error("IO error").message() ⇒ IO error

function stackTrace(error e) returns StackFrame[]

Returns an object representing the stack trace of the error.

error("IO error").stackTrace() ⇒ [callableName: main  fileName: test.bal lineNumber: 5]

function toBalString(error e) returns string

Converts an error to a string that describes the value in Ballerina syntax.

The details of the conversion are specified by the ToString abstract operation defined in the Ballerina Language Specification, using the expression style.

error("invalid salary", value = 0d).toBalString() ⇒ error("invalid salary",value=0d)

function toString(error e) returns string

Converts an error to a string.

The details of the conversion are specified by the ToString abstract operation defined in the Ballerina Language Specification, using the direct style.

error("invalid salary", value = 0d).toString() ⇒ error("invalid salary",value=0)