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of_retrieve
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Full name
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pfc_n_cst_tvsrv_levelsource.of_retrieve
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Access
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public
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Extend of
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long
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Return value
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long
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Prototype
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public function long of_retrieve(integer,any[20],ref n_ds)
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Name
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Datatype
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li_Cnt
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Integer
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li_Index
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Integer
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li_numcols
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Integer
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ll_NewRows
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Long
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ll_Rows
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Long
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ls_cacheid
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String
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ls_column
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string[]
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ls_expression
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String
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ls_filter
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String
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ls_operators
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string[]
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lw_parentwindow
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window
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public function long of_retrieve (integer ai_level, any aa_arg[20], ref n_ds ads_data);//////////////////////////////////////////////////////////////////////////////
// Public Function: of_Retrieve
// Arguments: ai_Level The TreeView level to be retrieved.
// aa_Arg[20] An array of type Any that will contain the retrieval
// argument values.
// ads_obj The datastore holding the retrieved data. Passed by reference
// Returns: Integer
// Returns 1 if the data source was added successfully,
// -1 if an error occurrs.
// -2 Key columns were not defined for the level
// -3 Retrieve from datastore was not successful
// -4 if datawindow object is not valid
// Description: Retrieve the data for a treeview level.
//////////////////////////////////////////////////////////////////////////////
// Rev. History Version
// 6.0 Initial version
// 7.0 Fix call to of_BuildExpression, requires string argument
//////////////////////////////////////////////////////////////////////////////
// Copyright © 1996-1999 Sybase, Inc. and its subsidiaries. All rights reserved. Any distribution of the
// PowerBuilder Foundation Classes (PFC) source code by other than Sybase, Inc. and its subsidiaries is prohibited.
//////////////////////////////////////////////////////////////////////////////
Integer li_Cnt, li_Index, li_numcols
Long ll_NewRows, ll_Rows
String ls_cacheid, ls_filter, ls_expression
string ls_column[], ls_operators[]
window lw_parentwindow
// Check arguments
If IsNull(itv_requestor) or not isvalid(itv_requestor) Then Return -1
If IsNull(ai_level) or (ai_level < 1) Then Return -1
// Determine if the level is recursive
If ai_Level > UpperBound(inv_attrib) Then
li_Index = UpperBound(inv_attrib)
Else
li_Index = ai_Level
End If
// check datawindow object for existence. This is set to ""
// in of_register() when the datawindow is not updateable
if inv_attrib[li_Index].is_DataObject= "" then return -4
// Set up the cache id
ls_cacheid = CACHE_ID + string(li_index)
// Retrieve data into the DataStore
// pass the arguments to the cache
If (inv_attrib[li_Index].is_method = inv_cache.SQL) or &
(inv_attrib[li_Index].is_method = inv_cache.RETRIEVE) Then
// register the arguments; retrieve the cache and get the reference
inv_cache.of_RegisterArgs(ls_cacheid, aa_Arg)
If inv_cache.of_Refresh(ls_cacheid) < 0 Then return -1
End If
// Get a reference to the cache - data was retrieved on registration
IF inv_cache.of_GetRegistered(ls_cacheid, ads_data) <> 1 then Return -1
// turn back on the base service as cache does not turn it on
ads_data.of_SetBase(TRUE)
//// datastore needs parent window reference to perform updates
//itv_requestor.of_Getparentwindow(lw_parentwindow)
//ads_data.of_SetParentWindow(lw_parentwindow)
// filter the datastore to return only the necessary rows
If (inv_attrib[li_Index].is_method = inv_cache.SQL) or &
(inv_attrib[li_Index].is_method = inv_cache.RETRIEVE) Then
// do not filter. The refresh should have done the work for those methods
Else
of_parsecols(inv_attrib[li_index].is_filtercols, ls_operators, ls_column)
for li_cnt = 1 to upperbound(ls_column)
ls_expression = ads_data.inv_base.of_buildexpression(0, ls_column[li_cnt], "=", String (aa_Arg[li_cnt]))
If Pos(ls_operators[li_cnt], "N") > 0 Then
ls_expression = " NOT (" + ls_expression + ") "
End If
If Pos(ls_operators[li_cnt], "A") > 0 Then
ls_expression = " AND " + ls_expression
End If
If Pos(ls_operators[li_cnt], "O") > 0 Then
ls_expression = " OR " + ls_expression
End If
ls_filter = ls_filter + ls_expression
end for
ads_data.setfilter(ls_filter)
ads_data.filter()
End If
ll_NewRows = ads_data.RowCount()
//// Append the rows to the level's DataStore
//ll_Rows = inv_attrib[li_Index].ids_obj.RowCount()
//ids_Buffer.RowsCopy(1, ll_NewRows, Primary!, inv_attrib[li_Index].ids_obj, (ll_Rows + 1), Primary!)
//
//// Clear the status flags for the new rows
//For li_Cnt = (ll_Rows + 1) To (ll_Rows + ll_NewRows)
// inv_attrib[li_Index].ids_obj.SetItemStatus(li_Cnt, 0, Primary!, DataModified!)
// inv_attrib[li_Index].ids_obj.SetItemStatus(li_Cnt, 0, Primary!, NotModified!)
//Next
Return ll_NewRows
end function
pfcapsrv.pbl
> 
pfc_n_cst_tvsrv_levelsource
>