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Is there a more performant way to dynamically detect if Content Notes is enabled?

I see that getGlobalDescribe can be used to check the presence ContentNote, if it present then is enabled. Usually, the time is around 400-500ms on the first call and very little in subsequent calls - around 40ms. So, I see caching reducing the CPU Time consumption for subsequent calls but if the initial call could be reduced, that would be even better.

Getting rid of the describe call is a possibility if is reliable and more performant.

e.g.:

Map<String, SobjectType> gd = Schema.getGlobalDescribe(); Boolean isContentNotesEnabled = gd.get('ContentNote') != null;
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2 Answers 2

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I'd recommend using Schema.ContentNote instead of just ContentNote. Note that a developer could still use the class named Schema, so you'd also make sure there's no Schema class:

if(Type.forName('Schema') == null) { if(Type.forName('Schema.ContentNote') != null) { // We have ContentNote! } } else { if(Schema.getGlobalDescribe().get('ContentNote') != null) { // We have ContentNote! } }

Note that if someone defines a Schema class, we have to fallback to the slower (500ms) method, as this is always safe, but can use the much faster (<1ms, I think) method otherwise.

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  • All of this trouble because Salesforce doesn't have a way that performant and native to inform code if Content Notes are enabled. Commented May 14, 2020 at 17:16
  • Was just revisiting this, do you think is worth doing if(Type.forName('Schema', 'ContentNote') != null) { to avoid the both initial if statements? Commented Jun 11, 2020 at 18:15
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I don't know if there's a more direct way, but there's a more efficient way to do what your check does:

Type contentNoteType = Type.forName('ContentNote'); System.debug(contentNoteType != null && contentNoteType.newInstance() instanceof SObject);

This saves you getting the global schema.

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  • That is a very interesting approach, could not it stop to work if there is a class named ContentNote? Commented May 14, 2020 at 13:49
  • Only if the class called ContentNote didn't have a default constructor. If it does, that code would still get the right answer because it's checking the type of the new instance. If it doesn't have a default constructor, an exception is thrown (which I guess you could catch) Commented May 14, 2020 at 14:46
  • Got you, the problem is the collision, because if it happens then it is back to square one to check if ContentNote is a valid sObject (even catching the exception). Commented May 14, 2020 at 15:35

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