avoid wrapping materialized fieldValueObject in a CompletableFuture #3943
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samuelAndalon changed the title 
samuelAndalon commented Apr 29, 2025
| CompletableFuture<Object> executionResultFuture = fieldValueInfo.getFieldValueFuture(); | ||
| ctxCompleteField.onDispatched(); | ||
| executionResultFuture.whenComplete(ctxCompleteField::onCompleted); | ||
| if (fieldValueInfo.isFutureValue()) { |
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I could've done this as well but it has the unchecked cast already handled internally by FieldValueInfo
Object executionResult = fieldValueInfo.getFieldValueObject(); ctxCompleteField.onDispatched(); if (executionResult instanceof CompletableFuture) { @SuppressWarnings("unchecked") CompletableFuture<Object> executionResultFuture = (CompletableFuture<Object>) executionResult; executionResultFuture.whenComplete(ctxCompleteField::onCompleted); } else { ctxCompleteField.onCompleted(executionResult, null); }
Samjin approved these changes Apr 29, 2025
bbakerman approved these changes Apr 29, 2025
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Nice catch - I am embarrassed I missed this in the great "materialised migration" effort
bbakerman added the performance 
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| all good! thank you, now I am curious the memory and CPU improvement this change will bring |
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| @bbakerman I wonder if this can be cherry picked to version 22.x ? I can prepare the PR. |
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While updating graphql-kotlin to graphql-java 23 found that
completeFieldis still wrappingFieldValueInfo.fieldValueObjectin aCompletableFuturefor objects already materialized / in memorythis might be considered a follow up of the
Completable Future wrappingchange set that came in graphql-java 22https://github.com/graphql-java/graphql-java/releases/tag/v22.0
I don't think this is a breaking change.