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* SQLdb now handles queries with statementtype stExecProcedure as select queries so that it is possible to fetch the results. But stExecProcedure will fetch only one row of data.

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* TIBConnection now sets the statement type of a call to a stored procedures to stExecProcedure. This also works for "insert into .. returning" queries. (+test)

git-svn-id: trunk@12454 -
This commit is contained in:
joost 2008-12-29 13:17:34 +00:00
parent 0d4c4a213e
commit 00e76eab6a
3 changed files with 52 additions and 14 deletions
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21
packages/fcl-db/src/sqldb/interbase/ibconnection.pp
View File

@ -519,6 +519,10 @@ procedure TIBConnection.PrepareStatement(cursor: TSQLCursor;ATransaction : TSQLT
var dh : pointer;
tr : pointer;
x : shortint;
info_request : string;
resbuf : array[0..7] of byte;
blockSize : integer;
IBStatementType: integer;
begin
with cursor as TIBcursor do
@ -553,7 +557,22 @@ begin
end
else
AllocSQLDA(in_SQLDA,0);
if FStatementType = stselect then
// Get the statement type from firebird/interbase
info_request := chr(isc_info_sql_stmt_type);
if isc_dsql_sql_info(@Status[0],@Statement,Length(info_request), @info_request[1],sizeof(resbuf),@resbuf) <> 0 then
CheckError('PrepareStatement', Status);
assert(resbuf[0]=isc_info_sql_stmt_type);
BlockSize:=isc_vax_integer(@resbuf[1],2);
IBStatementType:=isc_vax_integer(@resbuf[3],blockSize);
assert(resbuf[3+blockSize]=isc_info_end);
// If the statementtype is isc_info_sql_stmt_exec_procedure then
// override the statement type derrived by parsing the query.
// This to recognize statements like 'insert into .. returning' correctly
if IBStatementType = isc_info_sql_stmt_exec_procedure then
FStatementType := stExecProcedure;
if FStatementType in [stSelect,stExecProcedure] then
begin
if isc_dsql_describe(@Status[0], @Statement, 1, SQLDA) <> 0 then
CheckError('PrepareSelect', Status);

10
packages/fcl-db/src/sqldb/sqldb.pp
View File

@ -930,7 +930,7 @@ begin
else
Db.PrepareStatement(Fcursor,sqltr,FSQLBuf,FParams);
if (FCursor.FStatementType = stSelect) then
if (FCursor.FStatementType in [stSelect,stExecProcedure]) then
FCursor.FInitFieldDef := True;
end;
end;
@ -955,11 +955,13 @@ end;
function TCustomSQLQuery.Fetch : boolean;
begin
if not (Fcursor.FStatementType in [stSelect]) then
if not (Fcursor.FStatementType in [stSelect,stExecProcedure]) then
Exit;
if not FIsEof then FIsEOF := not TSQLConnection(Database).Fetch(Fcursor);
Result := not FIsEOF;
// A stored procedure is always at EOF after its first fetch
if FCursor.FStatementType = stExecProcedure then FIsEOF := True;
end;
procedure TCustomSQLQuery.Execute;
@ -990,7 +992,7 @@ end;
procedure TCustomSQLQuery.InternalClose;
begin
if StatementType = stSelect then FreeFldBuffers;
if StatementType in [stSelect,stExecProcedure] then FreeFldBuffers;
// Database and FCursor could be nil, for example if the database is not assigned, and .open is called
if (not IsPrepared) and (assigned(database)) and (assigned(FCursor)) then TSQLConnection(database).UnPrepareStatement(FCursor);
if DefaultFields then
@ -1178,7 +1180,7 @@ begin
try
ReadFromFile:=IsReadFromPacket;
Prepare;
if FCursor.FStatementType in [stSelect] then
if FCursor.FStatementType in [stSelect,stExecProcedure] then
begin
if not ReadFromFile then
begin

17
packages/fcl-db/tests/testfieldtypes.pas
View File

@ -52,6 +52,7 @@ type
procedure TestpfInUpdateFlag; // bug 7565
procedure TestInt;
procedure TestScript;
procedure TestInsertReturningQuery;
procedure TestTemporaryTable;
@ -902,6 +903,22 @@ begin
inherited RunTest;
end;
procedure TTestFieldTypes.TestInsertReturningQuery;
begin
if (SQLDbType <> interbase) then Ignore('This test does only apply to Firebird.');
with TSQLDBConnector(DBConnector) do
begin
// This only works with databases that supports 'insert into .. returning'
// for example, Firebird version 2.0 and up
CreateTableWithFieldType(ftInteger,'int');
Query.SQL.Text:='insert into FPDEV2 values(154) returning FT';
Query.Open;
AssertEquals('FT',Query.fields[0].FieldName);
AssertEquals(154,Query.fields[0].AsInteger);
Query.Close;
end;
end;
procedure TTestFieldTypes.TestClearUpdateableStatus;
// Test if CanModify is correctly disabled in case of a select query without
// a from-statement.