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Commit8d47a90

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Update function comments
Aftera6542a4, some function commentswere misplaced. Fix that.Reviewed-by: Alvaro Herrera <alvherre@alvh.no-ip.org>
1 parent877cdf1 commit8d47a90

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  • src/backend/access/transam

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‎src/backend/access/transam/xact.c

Lines changed: 19 additions & 20 deletions
Original file line numberDiff line numberDiff line change
@@ -3190,12 +3190,25 @@ PreventTransactionChain(bool isTopLevel, const char *stmtType)
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}
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/*
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*These two functions allow for warnings or errors if a command is
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*executed outside of a transaction block.
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*WarnNoTranactionChain
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*RequireTransactionChain
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*
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*These two functions allow for warnings or errors if a command is executed
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*outside of a transaction block. This is useful for commands that have no
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*effects that persist past transaction end (and so calling them outside a
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*transaction block is presumably an error). DECLARE CURSOR is an example.
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*While top-level transaction control commands (BEGIN/COMMIT/ABORT) and SET
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*that have no effect issue warnings, all other no-effect commands generate
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*errors.
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*
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*If we appear to be running inside a user-defined function, we do not
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*issue anything, since the function could issue more commands that make
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*use of the current statement's results. Likewise subtransactions.
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*Thus these are inverses for PreventTransactionChain.
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*
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*While top-level transaction control commands (BEGIN/COMMIT/ABORT) and
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*SET that have no effect issue warnings, all other no-effect commands
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*generate errors.
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*isTopLevel: passed down from ProcessUtility to determine whether we are
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*inside a function.
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*stmtType: statement type name, for warning or error messages.
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*/
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void
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WarnNoTransactionChain(boolisTopLevel,constchar*stmtType)
@@ -3210,21 +3223,7 @@ RequireTransactionChain(bool isTopLevel, const char *stmtType)
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}
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/*
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*RequireTransactionChain
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*
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*This routine is to be called by statements that must run inside
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*a transaction block, because they have no effects that persist past
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*transaction end (and so calling them outside a transaction block
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*is presumably an error). DECLARE CURSOR is an example.
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*
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*If we appear to be running inside a user-defined function, we do not
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*issue anything, since the function could issue more commands that make
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*use of the current statement's results. Likewise subtransactions.
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*Thus this is an inverse for PreventTransactionChain.
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*
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*isTopLevel: passed down from ProcessUtility to determine whether we are
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*inside a function.
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*stmtType: statement type name, for warning or error messages.
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* This is the implementation of the above two.
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*/
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staticvoid
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CheckTransactionChain(boolisTopLevel,boolthrowError,constchar*stmtType)

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