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Commit63490dd

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Remove GIN interface section, which is now documented in SGML.
Heikki Linnakangas
1 parentb2acd63 commit63490dd

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‎src/backend/access/gin/README

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@@ -88,35 +88,6 @@ Limitations
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* Gin doesn't support full scans of indices.
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* Gin doesn't index NULL values.
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Gin Interface
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-------------
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Opclass interface pseudocode. An example for a Gin opclass can be found in
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ginarayproc.c.
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Datum* extractValue(Datum inputValue, uint32* nentries)
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Returns an array of Datum of entries of the value to be indexed. nentries
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should contain the number of returned entries.
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int compareEntry(Datum a, Datum b)
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Compares two entries (not the indexing values)
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Datum* extractQuery(Datum query, uint32* nentries, StrategyNumber n)
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Returns an array of Datum of entries of the query to be executed.
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n contains the strategy number of the operation.
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bool consistent(bool[] check, StrategyNumber n, Datum query)
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The size of the check array is the same as sizeof of the array returned by
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extractQuery. Each element of the check array is true if the indexed value
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has a corresponding entry in the query. i.e. if (check[i] == TRUE) then
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the i-th entry of the query is present in the indexed value. The Function
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should return true if the indexed value matches by StrategyNumber and
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the query.
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