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Fix #10: PK for local secondary index must default to 'pk' #22

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Merged
mvhenten merged 1 commit into from
Dec 3, 2025
Merged

Fix #10: PK for local secondary index must default to 'pk' #22

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8 changes: 8 additions & 0 deletions demo/main.tsp
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Original file line number Diff line number Diff line change
Expand Up @@ -67,6 +67,14 @@ model Job {
sk: [Person.firstName],
}
)
@index(
"byAge",
{
index: "lsi1",
pk: [Person.pk],
sk: [Person.age],
}
)
model Person {
@invisible(Lifecycle)
pk: UUID;
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10 changes: 8 additions & 2 deletions src/decorators/$index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,8 @@ const getStringValue = (source: Model, name: string) => {
}
};

const isLocalSecondaryIndex = (index: string) => /^lsi[1-5]$/.test(index);

const normalizeKey = (
keyName: string,
params: { target: Model; pattern: Model },
Expand All @@ -63,9 +65,13 @@ const normalizeKey = (
const key = getProperty(pattern, keyName);
const index = getStringValue(pattern, "index") ?? "";

// LSI (Local Secondary Index) must share the same pk as the primary index
const fieldPrefix =
keyName === "pk" && isLocalSecondaryIndex(index) ? "" : index;

if (key && key.kind === "Tuple") {
return {
field: `${index}${keyName}`,
field: `${fieldPrefix}${keyName}`,
composite: extractFieldNames(target, key),
};
}
Expand All @@ -83,7 +89,7 @@ const normalizeKey = (
}

return {
field: `${index}${keyName}`,
field: `${fieldPrefix}${keyName}`,
composite: [],
};
};
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