Try to implement notion backend #725
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georgeh0
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Jul 11, 2025
| let content = self.fetch_page_content(page_id.as_ref()).await?; | ||
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| let fields = vec
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page ID is the key column, not a value column. Thisget_value() function takes key as input and return value columns. So page ID shouldn't be here.
The error is because fields put here doesn't match output schema returned by get_output_schema() below (for a KTable, first is key column, the remaining are value columns, so the value here is expected to match the remaining columns).
We will need to have validation to check schema of values returned here matching the declared schema (created #735 for this), so such problem can be easily caught and understandable in the future.
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This implementation has error:
[2025-07-09T05:32:58Z ERROR cocoindex_engine::execution::source_indexer] JoinError::Panic(Id(33), "Field is already set, violating single-definition rule: KTable({Range(RangeValue { start: 0, end: 5 }): ScopeValueBuilder { fields: [OnceLock(Basic(Str("test1"))), OnceLock(Struct(FieldValues { fields: [Basic(Int64(0)), Basic(Int64(1)), Basic(Int64(1))] })), OnceLock(Struct(FieldValues { fields: [Basic(Int64(5)), Basic(Int64(1)), Basic(Int64(6))] })), OnceLock()] }})", ...)
Please double check.