tline.cls

目录：图书管理系统软件设计说明 一．可行性研究 二．需求分析：1．任务概述2．数据需求：2.3 数据库描述：2.4 数据采集： 3．功能需求：新书入库DFD：图书借阅的DFD：过期提示的DFD：借阅查

VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
  Persistable = 0  'NotPersistable
  DataBindingBehavior = 0  'vbNone
  DataSourceBehavior  = 0  'vbNone
  MTSTransactionMode  = 0  'NotAnMTSObject
END
Attribute VB_Name = "tline"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Public lid As Long
Public lname As String
Public lday As Integer
Public ltype As Integer
Public insCom As String
Public insFee As Single
Public otherCost As Single
Public tourPay As Single
Public benefit As Single
Public AreaId As Integer

Public Sub Init()
  lid = 0
  lname = ""
  lday = 0
  ltype = 0
  insCom = ""
  insFee = 0
  otherCost = 0
  tourPay = 0
  benefit = 0
  AreaId = 0
End Sub

Public Sub Delete(ByVal Tmplid As Long)
  DB_Connect
  
  SqlStmt = "DELETE FROM tline WHERE lid=" + Trim(Tmplid)
  OdbcExt (SqlStmt)
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
End Sub

Public Function AreaInLine(ByVal TmpAreaId As Long) As String
  DB_Connect
  
  SqlStmt = "SELECT lname FROM tline WHERE AreaId=" _
          + Trim(TmpAreaId)
  OdbcExt (SqlStmt)
  If SQLFetch(Hstmt) <> SQL_NO_DATA_FOUND Then
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 1, 1, ColVal, Len(ColVal), pcblen)
    AreaInLine = TrimStr(ColVal)
  Else
    AreaInLine = ""
  End If
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  
  DB_Disconnect
End Function


Public Function GetInfo(ByVal Tmplid As Long) As Boolean
  lid = Tmplid
  
  DB_Connect
  
  SqlStmt = "SELECT * FROM tline WHERE lid=" + Trim(Tmplid)
  OdbcExt (SqlStmt)
  If SQLFetch(Hstmt) = SQL_NO_DATA_FOUND Then
    GetInfo = False
    Init
  Else
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 2, 1, ColVal, Len(ColVal), pcblen)
    lname = TrimStr(ColVal)
    
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 3, 1, ColVal, Len(ColVal), pcblen)
    lday = Val(ColVal)
    
    ColVal = String(4, 0)
    Rc = SQLGetData(Hstmt, 4, 1, ColVal, Len(ColVal), pcblen)
    ltype = Val(ColVal)
    
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 5, 1, ColVal, Len(ColVal), pcblen)
    insCom = TrimStr(ColVal)
    
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 6, 1, ColVal, Len(ColVal), pcblen)
    insFee = Val(ColVal)
  
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 7, 1, ColVal, Len(ColVal), pcblen)
    otherCost = Val(ColVal)
   
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 8, 1, ColVal, Len(ColVal), pcblen)
    tourPay = Val(ColVal)
    
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 9, 1, ColVal, Len(ColVal), pcblen)
    benefit = Val(ColVal)
   
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 12, 1, ColVal, Len(ColVal), pcblen)
    AreaId = Val(ColVal)
    
    GetInfo = True
  End If
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  
  DB_Disconnect
End Function

Public Function GetId(ByVal TmpName As String) As Long
  DB_Connect
  
  SqlStmt = "SELECT * FROM tline WHERE lname='" + Trim(TmpName) + "'"
  OdbcExt (SqlStmt)
  If SQLFetch(Hstmt) <> SQL_NO_DATA_FOUND Then
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 1, 1, ColVal, Len(ColVal), pcblen)
    GetId = Val(ColVal)
  Else
    GetId = 0
  End If
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  
  DB_Disconnect
End Function

Public Function GetNewId() As Long
  DB_Connect
  
  SqlStmt = "SELECT Max(lid) FROM tline"
  OdbcExt (SqlStmt)
  If SQLFetch(Hstmt) <> SQL_NO_DATA_FOUND Then
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 1, 1, ColVal, Len(ColVal), pcblen)
    GetNewId = Val(ColVal) + 1
  End If
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  
  DB_Disconnect
End Function

Public Function In_DB(ByVal TmpName As String) As Boolean
  DB_Connect
  
  SqlStmt = "SELECT * FROM tline WHERE lname='" + Trim(TmpName) + "'"
  OdbcExt (SqlStmt)
  If SQLFetch(Hstmt) <> SQL_NO_DATA_FOUND Then
    In_DB = True
  Else
    In_DB = False
  End If
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  
  DB_Disconnect
End Function

Public Function Insert() As Long
  lid = GetNewId
  
  DB_Connect
  SqlStmt = "INSERT INTO tline (lid, AreaId) VALUES(" _
          + Trim(lid) + "," + Trim(AreaId) + ")"
  OdbcExt (SqlStmt)
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  DB_Disconnect
  
  Insert = lid
End Function

Public Sub Loadline_ByArea(ByVal TmpAreaId As Long)
  Dim i As Integer
  
  Erase ArrLine
  ReDim ArrLine(0)
  
  DB_Connect
  SqlStmt = "SELECT lname FROM tline WHERE AreaId=" _
          + Trim(TmpAreaId) + " ORDER BY lname"
  OdbcExt (SqlStmt)
  i = 0
  Do While SQLFetch(Hstmt) <> SQL_NO_DATA_FOUND
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 1, 1, ColVal, Len(ColVal), pcblen)
    ReDim Preserve ArrLine(i + 1)
    ArrLine(i) = TrimStr(ColVal)
    i = i + 1
  Loop
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)

  DB_Disconnect
End Sub

Public Sub Update(ByVal OriId As String)
  DB_Connect
  SqlStmt = "UPDATE tline SET lname='" + Trim(lname) _
          + "',lday=" + Trim(lday) + ",ltype=" + Trim(ltype) _
          + ", insCom='" + Trim(insCom) + "', insFee=" _
          + Trim(insFee) + ", otherCost=" + Trim(otherCost) _
          + ", tourPay=" + Trim(tourPay) + ", benefit=" + Trim(benefit) _
          + " WHERE lid=" + Trim(OriId)
  OdbcExt (SqlStmt)
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  DB_Disconnect
End Sub