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Add support for Prefer tx=rollback

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This commit is contained in:
Wolfgang Walther
2020-11-22 18:21:06 -05:00
committed by Steve Chavez
parent 698fac8ff2
commit dbf99c6ac1
9 changed files with 290 additions and 16 deletions
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src/PostgREST/ApiRequest.hs
+14 -10
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@@ -114,6 +114,7 @@ data ApiRequest = ApiRequest {
, iPreferParameters :: Maybe PreferParameters -- ^ How to pass parameters to a stored procedure
, iPreferCount :: Maybe PreferCount -- ^ Whether the client wants a result count
, iPreferResolution :: Maybe PreferResolution -- ^ Whether the client wants to UPSERT or ignore records on PK conflict
, iPreferTransaction :: Maybe PreferTransaction -- ^ Whether the clients wants to commit or rollback the transaction
, iFilters :: [(Text, Text)] -- ^ Filters on the result ("id", "eq.10")
, iLogic :: [(Text, Text)] -- ^ &and and &or parameters used for complex boolean logic
, iSelect :: Maybe Text -- ^ &select parameter used to shape the response
@@ -146,16 +147,19 @@ userApiRequest confSchemas rootSpec dbStructure req reqBody
, iAccepts = maybe [CTAny] (map decodeContentType . parseHttpAccept) $ lookupHeader "accept"
, iPayload = relevantPayload
, iPreferRepresentation = representation
, iPreferParameters = if | hasPrefer (show SingleObject) -> Just SingleObject
| hasPrefer (show MultipleObjects) -> Just MultipleObjects
| otherwise -> Nothing
, iPreferCount = if | hasPrefer (show ExactCount) -> Just ExactCount
| hasPrefer (show PlannedCount) -> Just PlannedCount
| hasPrefer (show EstimatedCount) -> Just EstimatedCount
| otherwise -> Nothing
, iPreferResolution = if | hasPrefer (show MergeDuplicates) -> Just MergeDuplicates
| hasPrefer (show IgnoreDuplicates) -> Just IgnoreDuplicates
| otherwise -> Nothing
, iPreferParameters = if | hasPrefer (show SingleObject) -> Just SingleObject
| hasPrefer (show MultipleObjects) -> Just MultipleObjects
| otherwise -> Nothing
, iPreferCount = if | hasPrefer (show ExactCount) -> Just ExactCount
| hasPrefer (show PlannedCount) -> Just PlannedCount
| hasPrefer (show EstimatedCount) -> Just EstimatedCount
| otherwise -> Nothing
, iPreferResolution = if | hasPrefer (show MergeDuplicates) -> Just MergeDuplicates
| hasPrefer (show IgnoreDuplicates) -> Just IgnoreDuplicates
| otherwise -> Nothing
, iPreferTransaction = if | hasPrefer (show Commit) -> Just Commit
| hasPrefer (show Rollback) -> Just Rollback
| otherwise -> Nothing
, iFilters = filters
, iLogic = [(toS k, toS $ fromJust v) | (k,v) <- qParams, isJust v, endingIn ["and", "or"] k ]
, iSelect = toS <$> join (lookup "select" qParams)