OCLOperators sqlpassthrough
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SomeClass.sqlpassthrough('SqlExpression',Type1OfTupleResult,Type2OfTupleResult,...) | <code>SomeClass.sqlpassthrough('SqlExpression',Type1OfTupleResult,Type2OfTupleResult,...)</code> | ||
Example of how the OCL looks like to call a stored procedure: | '''Example of how the OCL looks like to call a stored procedure:''' | ||
Anvandare.sqlpassthrough('sp_Upd_Losen ' + self.AnvId.asString + ', \<nowiki>''</nowiki> + self.Anvandarnamn + '\', @aNyttLosenord', Int32) | Anvandare.sqlpassthrough('sp_Upd_Losen ' + self.AnvId.asString + ', \<nowiki>''</nowiki> + self.Anvandarnamn + '\', @aNyttLosenord', Int32) | ||
Notes: | '''Notes:''' | ||
* @aNyttLosenord here is automatically available because it's a variable available when the function is called. | * @aNyttLosenord here is automatically available because it's a variable available when the function is called. | ||
* You need to quote strings to be passed (if they aren't variables), like ''self.Anvandarnamn'' above. The \' is an escaped quote in OCL ([[Escape codes]]). | * You need to quote strings to be passed (if they aren't variables), like ''self.Anvandarnamn'' above. The \' is an escaped quote in OCL ([[Escape codes]]). | ||
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A use case and examples of using sqlPassThrough can be found here: "[[PSExpression , or how to do things in the DB from MDriven|PSExpression, or how to do things in the DB from MDriven]]" | A use case and examples of using sqlPassThrough can be found here: "[[PSExpression , or how to do things in the DB from MDriven|PSExpression, or how to do things in the DB from MDriven]]" | ||
Note also that the sqlPassThrough can create tuples: | ''Note also'' that the sqlPassThrough can create tuples: | ||
AccountPlan.SQLPassthrough('select somekey,sum(somestuff),sum(someotherstuff) from table1,2,3 where ...',String,Integer,Integer)->collect(xtuple|let xobject=SomeNewTransient.Create in (xobject.Key:=xtuple.Part1;xobject.SomeSum:=xtuple.Part2)) | AccountPlan.SQLPassthrough('select somekey,sum(somestuff),sum(someotherstuff) from table1,2,3 where ...',String,Integer,Integer)->collect(xtuple|let xobject=SomeNewTransient.Create in (xobject.Key:=xtuple.Part1;xobject.SomeSum:=xtuple.Part2)) | ||
Also, look here: [[OCLOperators sqlpassthroughobjects]] | Also, look here: [[OCLOperators sqlpassthroughobjects]] | ||
[[Category:OCLOperators]] | [[Category:OCLOperators]] | ||
Revision as of 06:49, 2 May 2023
SomeClass.sqlpassthrough('SqlExpression',Type1OfTupleResult,Type2OfTupleResult,...)
Example of how the OCL looks like to call a stored procedure:
Anvandare.sqlpassthrough('sp_Upd_Losen ' + self.AnvId.asString + ', \'' + self.Anvandarnamn + '\', @aNyttLosenord', Int32)
Notes:
- @aNyttLosenord here is automatically available because it's a variable available when the function is called.
- You need to quote strings to be passed (if they aren't variables), like self.Anvandarnamn above. The \' is an escaped quote in OCL (Escape codes).
- Int32 at the end is the SQL server return code.
- Your expression starts with a class, not an object.
A use case and examples of using sqlPassThrough can be found here: "PSExpression, or how to do things in the DB from MDriven"
Note also that the sqlPassThrough can create tuples:
AccountPlan.SQLPassthrough('select somekey,sum(somestuff),sum(someotherstuff) from table1,2,3 where ...',String,Integer,Integer)->collect(xtuple|let xobject=SomeNewTransient.Create in (xobject.Key:=xtuple.Part1;xobject.SomeSum:=xtuple.Part2))
Also, look here: OCLOperators sqlpassthroughobjects
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