ApexClass.SymbolTable field can be intermittently null when complilation of associated apex class fails
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Known Issues · In Review

ApexClass.SymbolTable field can be intermittently null when complilation of associated apex class fails

Apex

Last updated 17 days ago ·Reference W-9020774 ·Reported By 1 users

In Review

Summary
When ApexClass.SymbolTable is queried via SOQL using tooling api, the retrieved apex class is compiled on-demand before building the symbol table. If this compilation doesn't succeed, the field will be returned as null.

Currently, there is no information provided to the end user as to why they're seeing a null result. Compilation can fail due to the following reasons;

1. Apex class couldn't compile due to a compiler error
2. Execution thread couldn't acquire a compile lock for the org.


This makes it hard for customers to reliably consume this API.


Possible Changes

Either improve the returns of the API to indicate better why a symbol table couldn't be retrieved or refactor symbol table generation to not require a compile lock + on-demand compilation in every instance of retrieval

Repro
** Note: This is an intermittent repro due to nature of apex class compliation issues described above **

1. Run the following SOQL query using tooling API against an org with multiple apex classes;

SELECT Id, SymbolTable FROM ApexClass


Actual Result

> SymbolTable field returns null


Expected Result

> SymbolTable field should return object value

Workaround
N/A

Reported By (1)

Alexis Rafesthain

Is it Fixed?

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