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8.5

returnin an array from a class or method or function or procedure

Asked by leemarc in FoxPro Database

I have a class to which I pass a table name and want to return the struct of the sql table in an array to the calling function. It only seems to work if i dimensiont he array and pass it to the class. as in
dimension arRtnStructure(1,18)
oGetStruc = CREATEOBJECT("gettablestructures")
= oGetStruc.GetSqlTableStructure(@arRtnStructure,"IBIZ_USERINFO","SBT")

I would rather call it like
aRtnFldList = oGetStruc.GetSqlTableStructure(@arRtnStructure,"IBIZ_USERINFO","SBT")

For the code snippet below the proeprty referred to this.afldlist is created with the class

t
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* GetTableStruces.GetSqlTableStructure
*	LMP 9/19/2008 - we will use this to grab a table structure and return it in an array
* this works
LPARAMETERS arRtnStructure, cSearchTableName AS STRING, cSearchDatabase AS STRING, iConnHandle AS INTEGER
this parameter statment does not
LPARAMETERS arRtnStructure, cSearchTableName AS STRING, cSearchDatabase AS STRING, iConnHandle AS INTEGER
 
LOCAL iprevarea AS INTEGER, blnContinue AS Boolean, iResult AS INTEGER, blnCloseConnection AS Boolean
LOCAL  cExecString AS STRING, blnSuccess AS Boolean
LOCAL blnCloseConnection as Boolean
 
iprevarea = 0
blnContinue = .T.
blnRtnValue = .F.
blnSuccess  = .F.
cExecString = ""
iResult = 0
 
* we are going to get a structure from a sql table
* We MUST have the parameters of we can return nothing
* 1st let's makes certain we have 2 parameters, that the are character type
*	that they are not empty
IF !(VARTYPE(cSearchTableName) = "C" AND VARTYPE(cSearchDatabase) = "C")
	blnContinue = .F.
ELSE
	IF (EMPTY(cSearchTableName) OR EMPTY(cSearchDatabase))
		blnContinue = .F.
	ENDIF
	IF (VARTYPE(iConnHandle)<>"N") THEN
		iConnHandle = 0
	ENDIF
ENDIF
 
IF blnContinue THEN
 
	* if we did not send a conection handle we will have to get one
	IF iConnHandle = 0 THEN
		blnCloseConnection = .T.
		iConnHandle= oSql.getsqlConnection(SBTCONNECTION)
	ENDIF
 
	* now we can continue to process the request for the structure
	cExecString = cExecString + "EXEC sbt.dbo.GetTableStructure ?cSearchTableName, ?cSearchDatabase"
	SQLPREPARE(iConnHandle, cExecString, "sqlTableStructure")
 
	iResult = SQLEXEC(iConnHandle)
	=AERROR(aErrList)
	IF iResult < 1 THEN
		* we have a problem
		emsgText = 	emsgText = "SqlExec Failed with " + cExecString
		=oErr.LogtheError(oErr.cProgramVersion, 0, LINENO(), LINENO(1), PROGRAM(),PROGRAM(0), SYS(16), emsgText , emsgText , emsgText , @aErrList, .T.,m.loginInit, lnConnhandle )
		blnSuccess = .F.
	ELSE
		* we can now create our return array
* noth of these lines will  create the array properly
		AFIELDS(arRtnStructure,"sqlTableStructure")
		AFIELDS(this.afldlist,"sqlTableStructure")
		* close the cursor - we dont need it any more
		blnSuccess = .T.
	ENDIF
ENDIF
IF blnCloseConnection
	loSql.CloseSQLConnection(iConnHandle)
ENDIF
 
* this does not work
RETURN this.afldList
* this does work
RETURN arRtnStructure
[+][-]09/22/08 05:24 AM, ID: 22539314Accepted Solution

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Zone: FoxPro Database
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Solution Provided By: CaptainCyril
Participating Experts: 2
Solution Grade: B
 
[+][-]09/19/08 11:55 AM, ID: 22524214Expert Comment

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[+][-]09/19/08 12:19 PM, ID: 22524462Expert Comment

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[+][-]09/19/08 12:26 PM, ID: 22524565Author Comment

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[+][-]09/19/08 01:04 PM, ID: 22524983Expert Comment

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[+][-]09/19/08 01:36 PM, ID: 22525293Expert Comment

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[+][-]09/20/08 08:27 PM, ID: 22533105Expert Comment

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[+][-]09/22/08 04:59 AM, ID: 22539147Author Comment

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[+][-]09/22/08 05:28 AM, ID: 22539334Author Comment

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[+][-]09/22/08 05:41 AM, ID: 22539423Expert Comment

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[+][-]09/22/08 05:54 AM, ID: 22539489Author Comment

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