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<%@LANGUAGE="VBSCRIPT"%>
<%
'=====================================================
'   project_log_json.asp
'
'   AJAX SUpport for project_log.asp
'=====================================================
%>
<%
Option explicit
Response.ContentType = "text/html"
Response.AddHeader "Content-Type", "text/html;charset=UTF-8"
Response.CodePage = 65001
Response.CharSet = "UTF-8"
%>
<!--#include file="common/conf.asp"-->
<!--#include file="common/globals.asp"-->
<!--#include file="common/qstr.asp"-->
<!--#include file="common/common_subs.asp"-->
<SCRIPT LANGUAGE="VBScript" RUNAT=SERVER SRC="class/classaspJSON.vbs"></SCRIPT> 
<%
'------------ Variable Definition -------------
Dim result : result = -1
Dim SqlQry
Dim rsQry

' Init the output JSON class
'   Operations can add data
'   Default data will be added at the end
Dim oJSON :Set oJSON = New aspJSON
Dim newitem

'
' Determine the size of the record set
Dim MaxCount : MaxCount = 0

SqlQry = "select count(*) as count from PROJECT_ACTION_LOG"
On Error Resume Next
objEH.ErrorRedirect = FALSE
objEH.TryORA ( OraSession )
Set rsQry = OraDatabase.DbCreateDynaset( SqlQry, ORADYN_DEFAULT )
objEH.CatchORA ( OraSession )
    If ((NOT rsQry.BOF) AND (NOT rsQry.EOF)) Then
        MaxCount = rsQry("COUNT")
    End If
rsQry.Close
Set rsQry = Nothing

' Basic Header
oJSON.data("draw") = CInt(Request.QueryString("draw"))
oJSON.data("recordsTotal") = MaxCount
oJSON.data("recordsFiltered") = MaxCount

' Assist in debug
oJSON.data("start") = CInt(Request.QueryString("start"))
oJSON.data("length") = CInt(Request.QueryString("length"))

Dim vName
for each vName in Request.QueryString
    oJSON.data("sReq_" & vName) = Request.QueryString(vName)
next

' Extract selected range
result = 0
dim firstRow,lastRow
firstRow = CInt(Request.QueryString("start"))
lastRow = firstRow + CInt(Request.QueryString("length"))

' Define the data items to extract from the database
' Format is:
'   1) Name of Database column
'   2) Expression::Name of Database column
' Name will be used for sorting puposes
' Expression will be used for data retrieval
'
Dim dataCols: dataCols = Array ( _
        "TO_CHAR(PL.ACTION_DATETIME, 'Dy DD-Mon-YYYY HH:MI:SS')::PL.ACTION_DATETIME", _
        "PL.DESCRIPTION", _
        "PROJ_ID", _
        "RTAG_ID", _
        "AT.DESCRIPTION", _
        "FULL_NAME")

' Split dataCols into two parts based on ::
'   FirstPart - Complex Expression
'   SecondPart - Simple Name for Result
' If no '::' then Expression to be the simple bit
Dim x, pos
ReDim dataExt(Ubound(dataCols))
For x = Lbound(dataCols) to Ubound(dataCols)
    pos = InStr(  dataCols(x), "::" )
    If pos > 0 Then
        dataExt(x)  = Mid( dataCols(x), 1, pos - 1 )
        dataCols(x) = Mid(dataCols(x), pos + 2)    
    Else
        dataExt(x)  = dataCols(x)
    End If
Next


' Dim determine sorting options
Dim sortString
If Request.QueryString("order[0][column]") <> "" Then
    sortString = " ORDER BY " & dataCols(CInt(Request.QueryString("order[0][column]")))
    sortString = sortString & " " & Request.QueryString("order[0][dir]")
End If

' Create a list of cols that we need. Avoids ambiguity in selections
Dim colList,colListJoin
For x = Lbound(dataCols) to Ubound(dataCols)
    colList = colList & colListJoin & dataExt(x)
    Dim asName
    asName = Replace(dataCols(x) , "." , "_")
    if dataCols(x)  <>  asName Then colList = colList & " as " & asName
    colListJoin = ","
Next

Dim BasicSql
BasicSql = "select " & colList &_
           " from PROJECT_ACTION_LOG pl,USERS u, ACTION_TYPE at" &_
           " where pl.USER_ID = u.USER_ID and pl.acttype_id = at.acttype_id" &_
            sortString

SqlQry = "select * from ( "&_
            "select a.*, ROWNUM rnum from (" & BasicSql &_
                ") a where ROWNUM <= " & lastRow &_
            ") where rnum >= " & firstRow

' Assist in debug
oJSON.data("BasicSql") = BasicSql
'oJSON.data("SqlQry") = SqlQry

' Perform the database query
Set oJSON.data("data") = oJSON.Collection()
On Error Resume Next
objEH.ErrorRedirect = FALSE
objEH.TryORA ( OraSession )
Set rsQry = OraDatabase.DbCreateDynaset( SqlQry, ORADYN_DEFAULT )
objEH.CatchORA ( OraSession )

' Return all fields to the user as an array
If objEH.Finally Then
    While (NOT rsQry.BOF) AND (NOT rsQry.EOF)
        Set newitem = oJSON.AddToCollection(oJSON.data("data"))
        Dim ii
        for ii = 0 to rsQry.Fields.Count - 1
            newitem(ii) = rsQry.Fields(ii)
        Next
        rsQry.MoveNext
    Wend
End IF

rsQry.Close
Set rsQry = Nothing

'
' SQL error detection and reporting
If objEH.LastOraFailed Then
    oJSON.data("error") = 1

    oJSON.data("emsgSummary") = objEH.MessageSummary
    oJSON.data("emsgDetails") = objEH.MessageDetails
    oJSON.data("SqlQry") = SqlQry
End If

'Return the object
Response.Write oJSON.JSONoutput()
Set oJSON = Nothing
Call Destroy_All_Objects
%>