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DBServer4.prg
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DBServer4.prg
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#translate DBFDebug(<c1> [, <cn>]) =>
#pragma options ("enforceself", on)
PARTIAL CLASS DbServer
/// <include file="Rdd.xml" path="doc/DbServer.RddInfo/*" />
METHOD RDDINFO( kRDDInfoType, uRDDVal )
//SE-060601
LOCAL dwCurrentWorkArea AS DWORD
LOCAL oError AS USUAL
#IFDEF __DEBUG__
DBFDebug( "Entering "+__ENTITY__, AsString(kRDDInfoType), AsString(uRDDVal))
#ENDIF
lErrorFlag := FALSE
BEGIN SEQUENCE
VODBSelect( wWorkArea, out dwCurrentWorkArea )
IF ! VODBRDDInfo( kRDDInfoType, REF uRDDVal )
BREAK ErrorBuild( _VODBErrInfoPtr() )
ENDIF
__DBSSetSelect( dwCurrentWorkArea )
RECOVER USING oError
oErrorInfo := oError
__DBSSetSelect( dwCurrentWorkArea )
SELF:Error( oErrorInfo, #RDDINFO )
END SEQUENCE
#IFDEF __DEBUG__
DBFDebug( "Leaving "+__ENTITY__, AsString(uRDDVal) )
#ENDIF
RETURN uRDDVal
/// <include file="Rdd.xml" path="doc/DbServer.Recall/*" />
METHOD Recall( cbForBlock, cbWhileBlock, uScope )
LOCAL nNextCount AS LONGINT
LOCAL lRestOfFile AS LOGIC
LOCAL lRetCode AS LOGIC
LOCAL oError AS USUAL
LOCAL dwCurrentWorkArea AS DWORD
LOCAL nCurrRec AS DWORD
LOCAL lFLock AS LOGIC
LOCAL uVoRet AS USUAL
#IFDEF __DEBUG__
DBFDebug("Entering "+ __ENTITY__ )
#ENDIF
lErrorFlag := FALSE
BEGIN SEQUENCE
VODBSelect( wWorkArea, out dwCurrentWorkArea )
IF ! IsNil( cbForBlock ) .OR. ! IsNil( cbWhileBlock ) .OR. ! IsNil( uScope )
IF SELF:Notify( NOTIFYINTENTTOMOVE )
IF IsString( cbForBlock )
cbForBlock := &( "{ || " + cbForBlock + " }" )
ENDIF
IF IsString( cbWhileBlock )
cbWhileBlock := &( "{ || " + cbWhileBlock + " }" )
ENDIF
IF ! IsNil( uScope )
IF IsNumeric( uScope )
nNextCount := uScope
ELSE
lRestOfFile := uScope
ENDIF
ENDIF
lRetCode := SELF:__DBServerEval( { || VODBRecall() }, ;
cbForBlock, ;
cbWhileBlock, ;
nNextCount, ;
NIL, ;
lRestOfFile, ;
DBCCON, ;
DBCCUPDATE )
SELF:Notify( NOTIFYFILECHANGE )
ELSE
lRetCode := FALSE
SELF:__SetStatusHL( #Recall, __CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE_CAPTION ), ;
__CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE ) )
ENDIF
ELSEIF lActiveScope
IF SELF:Notify( NOTIFYINTENTTOMOVE )
lRetCode := SELF:__DBServerEval( { || VODBRecall() }, ;
cbStoredForBlock, ;
cbStoredWhileBlock, ;
nStoredNextCount, ;
NIL, ;
lStoredRestOfFile, ;
DBCCON, ;
DBCCUPDATE )
SELF:Notify( NOTIFYFILECHANGE )
ELSE
lRetCode := FALSE
SELF:__SetStatusHL( #Recall, __CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE_CAPTION ), ;
__CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE ) )
ENDIF
ELSE
VODBInfo( DBI_ISFLOCK, REF uVoRet )
IF nEffectiveCCMode == ccOptimistic .AND. ;
( nCurrRec := VODBRecno() ) <= VODBLastRec() .AND. ;
! ( lFLock := uVoRet )
nCurrRec := VODBRecno()
IF ! VODBRLock( nCurrRec )
BREAK DbError{ NIL, #Recall, EG_LOCK, __CavoStr( __CAVOSTR_DBFCLASS_LOCKFAILED ) }
ENDIF
IF ! VODBRecall()
BREAK ErrorBuild( _VODBErrInfoPtr() )
ENDIF
lRetCode := TRUE
IF ! lFLock
VODBUnlock( nCurrRec )
ENDIF
ELSE
IF ! VODBRecall()
BREAK ErrorBuild( _VODBErrInfoPtr() )
ENDIF
lRetCode := TRUE
ENDIF
SELF:Notify( NOTIFYRECORDCHANGE )
ENDIF
SELF:__ProcessConcurrency( TRUE )
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
RECOVER USING oError
oHLStatus := SELF:__GenerateStatusHL( oError )
oErrorInfo := oError
SELF:__ProcessConcurrency( FALSE )
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
lRetCode := FALSE
END SEQUENCE
#IFDEF __DEBUG__
DBFDebug("Leaving "+__ENTITY__, AsString(lRetCode))
#ENDIF
RETURN lRetCode
/// <include file="Rdd.xml" path="doc/DbServer.RecallAll/*" />
METHOD RecallAll()
LOCAL lRetCode AS LOGIC
LOCAL uValue AS USUAL
LOCAL cbKey AS USUAL
LOCAL dwCurrentWorkArea AS DWORD
LOCAL oError AS USUAL
LOCAL lSetDeleted AS LOGIC
#IFDEF __DEBUG__
DBFDebug("Entering "+ __ENTITY__ )
#ENDIF
lErrorFlag := FALSE
BEGIN SEQUENCE
VODBSelect( wWorkArea, out dwCurrentWorkArea )
IF SELF:Notify( NOTIFYINTENTTOMOVE )
lSetDeleted := SetDeleted( FALSE )
IF lSelectionActive
uValue := uSelectionValue
cbKey := cbSelectionIndexingExpression
IF VODBSeek( uSelectionValue, FALSE )
lRetCode := SELF:__DBServerEval( { || VODBRecall() }, ;
NIL, ;
{ || Eval( cbKey ) = uValue }, ;
NIL, ;
NIL, ;
TRUE, ;
DBCCON, ;
DBCCUPDATE )
IF ! VODBGoBottom()
BREAK ErrorBuild( _VODBErrInfoPtr() )
ENDIF
IF ! VODBSkip( 1 )
BREAK ErrorBuild( _VODBErrInfoPtr() )
ENDIF
IF ! lRetCode
BREAK ErrorBuild( _VODBErrInfoPtr() )
ENDIF
ENDIF
siSelectionStatus := DBSELECTIONNULL
ELSE
//PP-040216 lRest requires a logic due to strong typing
lRetCode := SELF:__DBServerEval( { || VODBRecall() }, ;
NIL, ;
NIL, ;
NIL, ;
NIL, ;
FALSE, ;
DBCCON, ;
DBCCUPDATE )
ENDIF
SetDeleted( lSetDeleted )
SELF:__ProcessConcurrency( TRUE )
SELF:Notify( NOTIFYFILECHANGE )
ELSE
lRetCode := FALSE
SELF:__SetStatusHL( #RecallAll, __CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE_CAPTION ), ;
__CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE ) )
ENDIF
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
RECOVER USING oError
oHLStatus := SELF:__GenerateStatusHL( oError )
oErrorInfo := oError
SELF:__ProcessConcurrency( FALSE )
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
lRetCode := FALSE
END SEQUENCE
#IFDEF __DEBUG__
DBFDebug("Leaving "+__ENTITY__, AsString(lRetCode))
#ENDIF
RETURN lRetCode
/// <include file="Rdd.xml" path="doc/DbServer.RecordInfo/*" />
METHOD RecordInfo( kRecInfoType, nRecordNumber, uRecVal )
//SE-060601
LOCAL dwCurrentWorkArea AS DWORD
LOCAL oError AS USUAL
#IFDEF __DEBUG__
DBFDebug( "Entering "+__ENTITY__ )
#ENDIF
lErrorFlag := FALSE
BEGIN SEQUENCE
VODBSelect( wWorkArea, out dwCurrentWorkArea )
IF IsNil( nRecordNumber )
nRecordNumber := 0
ENDIF
IF ! VODBRecordInfo( kRecInfoType, nRecordNumber, REF uRecVal )
IF ! VODBEof() .OR. ! Used()
BREAK DbError{ SELF, #RecordInfo, EG_ARG, "", kRecInfoType, "kRecInfoType" }
ENDIF
oErrorInfo := ErrorBuild( _VODBErrInfoPtr() )
oHLStatus := SELF:__GenerateStatusHL( oErrorInfo )
ENDIF
__DBSSetSelect( dwCurrentWorkArea )
RECOVER USING oError
oErrorInfo := oError
__DBSSetSelect( dwCurrentWorkArea )
SELF:Error( oErrorInfo, #RecordInfo )
END SEQUENCE
#IFDEF __DEBUG__
DBFDebug(__ENTITY__, AsString(uRecVal))
#ENDIF
RETURN uRecVal
/// <include file="Rdd.xml" path="doc/DbServer.Refresh/*" />
METHOD Refresh() CLIPPER
LOCAL lRet AS LOGIC
LOCAL oError AS USUAL
LOCAL n AS DWORD
LOCAL uInfo AS USUAL
LOCAL dwCurrentWorkArea AS DWORD
LOCAL nRec AS DWORD
LOCAL lRelease AS LOGIC
#IFDEF __DEBUG__
DBFDebug( "Entering "+__ENTITY__ )
#ENDIF
lErrorFlag := FALSE
BEGIN SEQUENCE
VODBSelect( wWorkArea, out dwCurrentWorkArea )
IF ! VODBInfo( DBI_ISFLOCK, REF uInfo)
BREAK ErrorBuild( _VODBErrInfoPtr( ) )
ENDIF
IF uInfo //File is locked
lRelease := FALSE
lRet := TRUE
ELSE
uInfo := NIL
IF ! VODBRecordInfo( DBRI_LOCKED, NIL, REF uInfo )
BREAK ErrorBuild( _VODBErrInfoPtr( ) )
ENDIF
IF uInfo //Record is locked
lRelease := FALSE
lRet := TRUE
ELSE
nRec := VODBRecno()
lRet := VODBRLock( nRec )
lRelease := lRet
ENDIF
ENDIF
IF lRet
// We must write back changes to BLOB fields to the Server
// Since they are not rolled back by VODBBuffRefresh()
FOR n := 1 TO wFieldCount
IF aOriginalBuffer[BUFFER_IS_BLOB, n]
uInfo := aOriginalBuffer[BUFFER_VALUE, n]
IF ! IsNil( uInfo ) .AND. ! IsArray( uInfo )
SELF:FIELDPUT( n, uInfo )
ENDIF
ENDIF
NEXT // n
IF lRelease
VODBUnlock( nRec )
ENDIF
ENDIF
IF nEffectiveCCMode == ccOptimistic
lCCOptimisticRecChg := FALSE
ENDIF
IF ! (lRet := VODBBuffRefresh())
BREAK ErrorBuild( _VODBErrInfoPtr() )
ENDIF
SELF:Notify( NOTIFYRECORDCHANGE )
RECOVER USING oError
oHLStatus := SELF:__GenerateStatusHL( oError )
oErrorInfo:= oError
lRet := FALSE
END SEQUENCE
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
#IFDEF __DEBUG__
DBFDebug("Leaving "+__ENTITY__, AsString(lRet))
#ENDIF
RETURN lRet
/// <include file="Rdd.xml" path="doc/DbServer.Reindex/*" />
METHOD Reindex()
LOCAL lRetCode AS LOGIC
LOCAL oError AS USUAL
LOCAL dwCurrentWorkArea AS DWORD
#IFDEF __DEBUG__
DBFDebug("Entering "+ __ENTITY__ )
#ENDIF
lErrorFlag := FALSE
BEGIN SEQUENCE
VODBSelect( wWorkArea, out dwCurrentWorkArea )
IF SELF:Notify( NOTIFYINTENTTOMOVE )
lRetCode := VODBOrdListRebuild()
IF ! lRetCode
BREAK ErrorBuild( _VODBErrInfoPtr() )
ENDIF
lRetCode := SELF:__ProcessConcurrency( TRUE )
SELF:Notify( NOTIFYCOMPLETION, #Reindex )
ELSE
lRetCode := FALSE
SELF:__SetStatusHL( #Reindex, __CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE_CAPTION ), ;
__CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE ) )
ENDIF
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
RECOVER USING oError
oHLStatus := SELF:__GenerateStatusHL( oError )
oErrorInfo := oError
SELF:__ProcessConcurrency( FALSE )
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
lRetCode := FALSE
END SEQUENCE
#IFDEF __DEBUG__
DBFDebug("Leaving "+__ENTITY__, AsString(lRetCode))
#ENDIF
RETURN lRetCode
/// <include file="Rdd.xml" path="doc/DbServer.Relation/*" />
METHOD Relation( nRelation )
//SE-060601
LOCAL dwCurrentWorkArea AS DWORD
LOCAL cRelation AS STRING
LOCAL oError AS USUAL
#IFDEF __DEBUG__
DBFDebug("Entering "+ __ENTITY__, AsString(nRelation))
#ENDIF
lErrorFlag := FALSE
BEGIN SEQUENCE
VODBSelect( wWorkArea, out dwCurrentWorkArea )
IF ! VODBRelation( nRelation, REF cRelation )
BREAK ErrorBuild( _VODBErrInfoPtr() )
ENDIF
RECOVER USING oError
oHLStatus := SELF:__GenerateStatusHL( oError )
oErrorInfo := oError
cRelation := ""
END SEQUENCE
__DBSSetSelect( dwCurrentWorkArea )
#IFDEF __DEBUG__
DBFDebug( "Leaving "+__ENTITY__, AsString(cRelation) )
#ENDIF
RETURN cRelation
/// <include file="Rdd.xml" path="doc/DbServer.Replace/*" />
METHOD Replace( acbExpression, aFieldList, cbForBlock, cbWhileBlock, uScope )
LOCAL nNextCount AS LONGINT
LOCAL lRestOfFile AS LOGIC
LOCAL lRetCode AS LOGIC
LOCAL aFieldNames AS ARRAY
LOCAL w AS DWORD
LOCAL acbExpr AS ARRAY
//LOCAL iCount := 0 AS INT
LOCAL wExprCount AS DWORD
LOCAL wFieldCount AS DWORD
LOCAL dwCurrentWorkArea AS DWORD
LOCAL oError AS USUAL
LOCAL oHLTemp AS OBJECT
#IFDEF __DEBUG__
DBFDebug( "Entering "+__ENTITY__ )
#ENDIF
lErrorFlag := FALSE
BEGIN SEQUENCE
VODBSelect( wWorkArea, out dwCurrentWorkArea )
IF ! IsArray( acbExpression )
acbExpression := { acbExpression }
ENDIF
wExprCount := ALen( acbExpression )
acbExpr := ArrayNew( wExprCount )
FOR w := 1 UPTO wExprCount
IF __CanEval( acbExpression[w] )
acbExpr[ w ] := acbExpression[w]
ELSEIF IsString( acbExpression[w] )
// RvdH 080212 This cannot happen..
//IF IsInstanceOfUsual( acbExpression[w], #DataField )
// acbExpr[w] := &( "{ ||" + acbExpression[w] + " }" )
//ELSE
acbExpr[w] := acbExpression[w]
//ENDIF
ELSEIF IsSymbol( acbExpression[w] ) .OR. IsInstanceOfUsual( acbExpression[w], #DataField )
acbExpr[w] := &( "{ || " + AsString( acbExpression[w] ) + " }" )
ELSE
acbExpr[w] := acbExpression[w]
ENDIF
NEXT
IF ! IsArray( aFieldList )
aFieldList := { aFieldList }
ENDIF
wFieldCount := ALen( aFieldList )
aFieldNames := ArrayNew( wFieldCount )
FOR w := 1 UPTO wFieldCount
aFieldNames[w] := String2Symbol( AsString( aFieldList[w] ) )
NEXT
IF wExprCount > 1 .AND. wExprCount != wFieldCount
BREAK DbError{ SELF, #Replace, EG_ARG, __CavoStr( __CAVOSTR_DBFCLASS_MISMATCH ) }
ENDIF
// Per documentation:
// If only two parameters are specified, DBServer:Replace() is subject
// to the server scope set with the DBServer ForBlock, WhileBlock and
// Scope access/assign methods. If not set, this server scope defaults
// to "no scope," and the method processes the current record.
IF ! IsNil( cbForBlock ) .OR. ! IsNil( cbWhileBlock ) .OR. ! IsNil( uScope )
// More than one parameter: do all
IF SELF:Notify( NOTIFYINTENTTOMOVE )
IF IsString( cbForBlock )
cbForBlock := &( "{ || " + cbForBlock + " }" )
ENDIF
IF IsString( cbWhileBlock )
cbWhileBlock := &( "{ || " + cbWhileBlock + " }" )
ENDIF
IF ! IsNil( uScope )
IF IsNumeric( uScope )
nNextCount := uScope
ELSE
lRestOfFile := uScope
ENDIF
ENDIF
lRetCode := SELF:__DBServerEval( { || __IterateForFieldAssign( acbExpr, aFieldNames ) }, ;
cbForBlock, ;
cbWhileBlock, ;
nNextCount, ;
NIL, ;
lRestOfFile, ;
DBCCON, ;
DBCCUPDATE )
lRetCode := SELF:__ProcessConcurrency( TRUE )
ELSE
lRetCode := FALSE
SELF:__SetStatusHL( #Replace, __CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE_CAPTION ), ;
__CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE ) )
oHLTemp := oHLStatus
ENDIF
ELSEIF lActiveScope
IF SELF:Notify( NOTIFYINTENTTOMOVE )
lRetCode := SELF:__DBServerEval( { || __IterateForFieldAssign( acbExpr, aFieldNames ) }, ;
cbStoredForBlock, ;
cbStoredWhileBlock, ;
nStoredNextCount, ;
NIL, ;
lStoredRestOfFile, ;
DBCCON, ;
DBCCUPDATE )
lRetCode := SELF:__ProcessConcurrency( TRUE )
ELSE
lRetCode := FALSE
SELF:__SetStatusHL( #Replace, __CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE_CAPTION ), ;
__CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE ) )
oHLTemp := oHLStatus
ENDIF
ELSE
// RvdH 080212 acbExpr can be a codeblock , object or a 'normal' value
// Therefore use the same method as above
// FOR w := 1 UPTO wExprCount
// SELF:FIELDPUT( aFieldNames[w], Eval( acbExpr[w] ) )
// NEXT
//lRetCode := TRUE
__IterateForFieldAssign( acbExpr, aFieldNames )
lRetCode := SELF:__ProcessConcurrency( TRUE )
ENDIF
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
RECOVER USING oError
oHLStatus := SELF:__GenerateStatusHL( oError )
oHLTemp := oHLStatus
oErrorInfo := oError
SELF:__ProcessConcurrency( FALSE )
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
lRetCode := FALSE
END SEQUENCE
SELF:__Notify( NOTIFYFILECHANGE )
IF ! lRetCode .AND. ! IsNil( oHLTemp )
lErrorFlag := TRUE
oHLStatus := oHLTemp
IF ! IsNil( oError )
oErrorInfo := oError
ELSE
oErrorInfo := NULL_OBJECT
ENDIF
ENDIF
#IFDEF __DEBUG__
DBFDebug("Leaving "+__ENTITY__, AsString(lRetCode))
#ENDIF
RETURN lRetCode
/// <include file="Rdd.xml" path="doc/DbServer.ResetNotification/*" />
METHOD ResetNotification()
IF siSuspendNotification > 0
siSuspendNotification -= 1
ENDIF
RETURN SELF
/// <include file="Rdd.xml" path="doc/DbServer.RLock/*" />
METHOD RLOCK( nRecordNumber )
LOCAL lRetCode AS LOGIC
LOCAL oError AS USUAL
LOCAL dwCurrentWorkArea AS DWORD
LOCAL nTries AS DWORD
#IFDEF __DEBUG__
DBFDebug( "Entering "+__ENTITY__, AsString(nRecordNumber))
#ENDIF
lErrorFlag := FALSE
nTries := SELF:nReTries
BEGIN SEQUENCE
VODBSelect( wWorkArea, out dwCurrentWorkArea )
//RvdH 030926 Strong typing of __DbsRLock() caused problems
//with missing nRecordnumber (Bug # 12448)
//PP-040416 Issue 12766 nRecordNumber must be allowed to be NIL, __DBSRLock changed to accept USUAL
// IF ! IsNumeric(nRecordNumber)
// nRecordNumber := VODBRecno()
// ENDIF
if IsNumeric(nRecordNumber) .and. nRecordNumber == -1
nRecordNumber := VODBRecno()
endif
lRetCode := __DBSRLock( nRecordNumber, nTries )
SELF:__OptimisticFlushNoLock()
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
RECOVER USING oError
oHLStatus := SELF:__GenerateStatusHL( oError )
oErrorInfo := oError
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
lRetCode := FALSE
END SEQUENCE
#IFDEF __DEBUG__
DBFDebug("Leaving "+__ENTITY__, AsString(lRetCode))
#ENDIF
RETURN lRetCode
/// <include file="Rdd.xml" path="doc/DbServer.RLockVerify/*" />
METHOD RLockVerify()
LOCAL lRetCode AS LOGIC
LOCAL oError AS USUAL
LOCAL dwCurrentWorkArea AS DWORD
#IFDEF __DEBUG__
DBFDebug( "Entering "+__ENTITY__ )
#ENDIF
//SE-060602
IF nEffectiveCCMode != ccOptimistic
RETURN FALSE
ENDIF
lErrorFlag := FALSE
BEGIN SEQUENCE
VODBSelect( wWorkArea, out dwCurrentWorkArea )
lRetCode := SELF:__RLockVerify()
IF lRetCode
SELF:__OptimisticFlushNoLock()
ENDIF
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
RECOVER USING oError
oHLStatus := SELF:__GenerateStatusHL( oError )
oErrorInfo := oError
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
lRetCode := FALSE
END SEQUENCE
#IFDEF __DEBUG__
DBFDebug("Leaving "+__ENTITY__, AsString(lRetCode))
#ENDIF
RETURN lRetCode
/// <include file="Rdd.xml" path="doc/DbServer.Seek/*" />
METHOD Seek( uSearchExpr, lSoftSeek, lLast )
LOCAL lRetCode AS LOGIC
LOCAL oError AS USUAL
LOCAL dwCurrentWorkArea AS DWORD
LOCAL nTries AS DWORD
#IFDEF __DEBUG__
DBFDebug( "Entering "+__ENTITY__,AsString(uSearchExpr), AsString(lSoftSeek), AsString(lLast))
#ENDIF
lErrorFlag := FALSE
nTries := SELF:nReTries
DEFAULT(REF lLast, FALSE)
BEGIN SEQUENCE
VODBSelect( wWorkArea, out dwCurrentWorkArea )
IF SELF:Notify( NOTIFYINTENTTOMOVE )
IF lSelectionActive
IF uSearchExpr == uSelectionValue
lRetCode := __DBSSeek( uSearchExpr, NIL, lLast, nTries )
siSelectionStatus := DBSELECTIONFOUND
ELSE
SELF:__SetStatusHL( #Seek, EG_BOUND, ;
__CavoStr( __CAVOSTR_DBFCLASS_SELECTIVESEEK ) )
lRetCode := FALSE
ENDIF
IF !lRetCode
siSelectionStatus := DBSELECTIONEOF
__DBSGoBottom( nTries )
__DBSSkip( 1, nTries )
ENDIF
ELSE
lRetCode := __DBSSeek( uSearchExpr, lSoftSeek, lLast, nTries )
ENDIF
IF lRetCode
lRetCode := SELF:__ProcessConcurrency( TRUE )
ENDIF
SELF:Notify( NOTIFYRECORDCHANGE )
ELSE
lRetCode := FALSE
SELF:__SetStatusHL( #Seek, __CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE_CAPTION ), ;
__CavoStr( __CAVOSTR_DBFCLASS_INTENTTOMOVE ) )
ENDIF
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
RECOVER USING oError
oHLStatus := SELF:__GenerateStatusHL( oError )
oErrorInfo := oError
SELF:__ProcessConcurrency( FALSE )
__DBSSetSelect( dwCurrentWorkArea ) //SE-060527
lRetCode := FALSE
END SEQUENCE
#IFDEF __DEBUG__
DBFDebug( "Leaving "+__ENTITY__, AsString(lRetCode) )
#ENDIF
RETURN lRetCode
/// <include file="Rdd.xml" path="doc/DbServer.Select/*" />
METHOD SELECT()
// RvdH 060623 Added
LOCAL dwCurrentWorkArea AS DWORD
VODBSelect( wWorkArea, out dwCurrentWorkArea )
RETURN dwCurrentWorkArea
/// <include file="Rdd.xml" path="doc/DbServer.SetDataField/*" />
METHOD SetDataField( nFieldPosition, oDataField )
LOCAL wFieldPosition := nFieldPosition AS DWORD
LOCAL oField := oDataField AS DataField
LOCAL lRetCode AS LOGIC
LOCAL oError AS USUAL
#IFDEF __DEBUG__
DBFDebug( "Entering "+__ENTITY__, AsString(nFieldPosition), AsString(oDataField))
#ENDIF
lErrorFlag := FALSE
BEGIN SEQUENCE
IF aDataFields == NULL_ARRAY
BREAK DbError{ SELF, #SetDataField, EG_SEQUENCE, ;
__CavoStr( __CAVOSTR_DBFCLASS_NODATAFIELDSEXIST ) }
ELSEIF IsNil( nFieldPosition ) .OR. ! IsNumeric( nFieldPosition ) .OR. ;
wFieldPosition < 1 .OR. wFieldPosition > ALen( aDataFields )
BREAK DbError{ SELF, #SetDataField, EG_ARG, ;
__CavoStr( __CAVOSTR_DBFCLASS_BADFIELDPOSITION ), nFieldPosition, "nFieldPosition" }
ELSEIF IsNil( oDataField ) .OR. ! IsInstanceOfUsual( oDataField, #DataField )
BREAK DbError{ SELF, #SetDataField, EG_ARG, ;
__CavoStr( __CAVOSTR_DBFCLASS_BADFIELDPOSITION ), nFieldPosition, "nFieldPosition" }
ELSE
IF oField:Name == aStruct[wFieldPosition, DBS_NAME] .AND. ;
oField:__FieldSpec:ValType == aStruct[wFieldPosition, DBS_TYPE] .AND. ;
oField:__FieldSpec:Length == aStruct[wFieldPosition, DBS_LEN] .AND. ;
oField:__FieldSpec:Decimals == aStruct[wFieldPosition, DBS_DEC]
aDataFields[wFieldPosition] := oField
lRetCode := TRUE
ELSE
BREAK DbError{ SELF, #SetDataField, EG_ARG, ;
__CavoStr( __CAVOSTR_DBFCLASS_BADFIELDMATCH ), nFieldPosition, "nFieldPosition" }
ENDIF
ENDIF
RECOVER USING oError
oHLStatus := SELF:__GenerateStatusHL( oError )
oErrorInfo := oError
lRetCode := FALSE
END SEQUENCE
#IFDEF __DEBUG__
DBFDebug( "Leaving "+__ENTITY__, AsString(lRetCode) )
#ENDIF
RETURN lRetCode
/// <include file="Rdd.xml" path="doc/DbServer.SetFilter/*" />
METHOD SetFilter( cbFilterBlock, cFilterText )
//SE-060601
LOCAL dwCurrentWorkArea AS DWORD
LOCAL lRetCode AS LOGIC
LOCAL oError AS USUAL
LOCAL lClearFilter AS LOGIC
LOCAL cFilter AS STRING
LOCAL oErr AS Error
#IFDEF __DEBUG__
DBFDebug( "Entering "+__ENTITY__, AsString(cbFilterBlock), AsString(cFilterText))
#ENDIF
lErrorFlag := FALSE
BEGIN SEQUENCE
VODBSelect( wWorkArea, out dwCurrentWorkArea )
lRetCode := TRUE
IF IsNil( cFilterText ) .AND. ! IsNil(cbFilterBlock)
cFilterText := "UNKNOWN"
ENDIF
//RvdH 070717 Added 'clear filter' for empty strings and NO arguments
IF PCount() == 0
lClearFilter := TRUE
ELSEIF __CanEval( cbFilterBlock )
// Ok
NOP
ELSEIF IsString( cbFilterBlock )
cFilter := cbFilterBlock
IF SLen(AllTrim(cFilter)) == 0
lClearFilter := TRUE
ELSE
cFilterText := cbFilterBlock
cbFilterBlock := &( "{ || " + cbFilterBlock + " }" )
ENDIF
ELSEIF IsNil( cbFilterBlock ) .AND. IsString(cFilterText)
cFilter := cFilterText
IF SLen(AllTrim(cFilter)) == 0
lClearFilter := TRUE
ELSE
cbFilterBlock := &( "{ || " + cFilter + " }" )
ENDIF
ELSE
oErr := DbError{ SELF, #SetFilter, EG_ARG, ;
__CavoStr( __CAVOSTR_DBFCLASS_BADFILTERBLOCK ), cbFilterBlock, "cbFilterBlock" }
oErr:ArgNum := 1
BREAK oErr
ENDIF
//RvdH 070717 Added 'clear filter' for empty strings
IF (lClearFilter)
lRetCode := VODBClearFilter()
ELSE
lRetCode := VODBSetFilter( cbFilterBlock, cFilterText )
ENDIF
IF !lRetCode
BREAK ErrorBuild( _VODBErrInfoPtr() )
ENDIF
SELF:GoTop()
RECOVER USING oError
oHLStatus := SELF:__GenerateStatusHL( oError )
oErrorInfo := oError
lRetCode := FALSE
END SEQUENCE
__DBSSetSelect( dwCurrentWorkArea )
#IFDEF __DEBUG__
DBFDebug( "Leaving "+__ENTITY__, AsString(lRetCode) )
#ENDIF
RETURN lRetCode
/// <include file="Rdd.xml" path="doc/DbServer.SetIndex/*" />
METHOD SetIndex( oFSIndexFile )
// oFSIndexFile is a a FileSpec object for the index file,
// or the filename of the index file as a string,
// with or without file type.
// File type defaults to the native type for the workarea RDD.
//
// If oFSIndexFile is omitted all currently opened indexes are closed.
//
LOCAL lRetCode AS LOGIC
LOCAL cIndexFileName AS STRING
LOCAL oError AS USUAL
LOCAL dwCurrentWorkArea AS DWORD
LOCAL nTries AS DWORD
#IFDEF __DEBUG__
DBFDebug( "Entering "+__ENTITY__, AsString(oFSIndexFile))
#ENDIF
lErrorFlag := FALSE
nTries := SELF:nReTries
BEGIN SEQUENCE
VODBSelect( wWorkArea, out dwCurrentWorkArea )
IF SELF:Notify( NOTIFYINTENTTOMOVE )
IF IsNil(oFSIndexFile)
lRetCode := __DBSOrdListClear("", NIL, nTries)
ELSE
IF IsObject(oFSIndexFile) .and. __Usual.ToObject(oFSIndexFile) IS FileSpec VAR oFs
cIndexFileName := oFS:FullPath
ELSE
cIndexFileName := oFSIndexFile
ENDIF
lRetCode := __DBSOrdListAdd(cIndexFileName, NIL, nTries)