restaurant.cls

采用VisualBasic和SQL Server 2000开发 功能比较全面的旅游资源管理系

VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
  Persistable = 0  'NotPersistable
  DataBindingBehavior = 0  'vbNone
  DataSourceBehavior  = 0  'vbNone
  MTSTransactionMode  = 0  'NotAnMTSObject
END
Attribute VB_Name = "Restaurant"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Public rid As Long
Public Rname As String
Public Rlevel As String
Public Contact As String
Public Phone As String
Public Address As String
Public Postcode As String
Public Breakfast As Single
Public Dinner As Single
Public AreaId As Integer
Public Input_time As String

Public Sub Init()
  rid = 0
  Rname = ""
  Rlevel = ""
  Contact = ""
  Phone = ""
  Address = ""
  Postcode = ""
  Breakfast = 0
  Dinner = 0
  AreaId = 0
  Input_time = ""
End Sub

Public Sub Delete(ByVal TmpRid As Long)
  DB_Connect
  
  SqlStmt = "DELETE FROM Restaurant WHERE Rid=" + Trim(TmpRid)
  OdbcExt (SqlStmt)
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  
  DB_Disconnect
End Sub

Public Function AreaInRes(ByVal TmpAreaId As Long) As String
  DB_Connect
  
  SqlStmt = "SELECT Rname FROM Restaurant 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)
    AreaInRes = TrimStr(ColVal)
  Else
    AreaInRes = ""
  End If
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  
  DB_Disconnect
End Function

Public Function GetInfo(ByVal TmpRid As Long) As Boolean
  rid = TmpRid
  
  DB_Connect
  
  SqlStmt = "SELECT * FROM Restaurant WHERE Rid=" + Trim(TmpRid)
  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)
    Rname = TrimStr(ColVal)
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 3, 1, ColVal, Len(ColVal), pcblen)
    Rlevel = TrimStr(ColVal)
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 4, 1, ColVal, Len(ColVal), pcblen)
    Contact = TrimStr(ColVal)
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 5, 1, ColVal, Len(ColVal), pcblen)
    Phone = TrimStr(ColVal)
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 6, 1, ColVal, Len(ColVal), pcblen)
    Address = TrimStr(ColVal)
    ColVal = String(400, 0)
    Rc = SQLGetData(Hstmt, 7, 1, ColVal, Len(ColVal), pcblen)
    Postcode = TrimStr(ColVal)
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 8, 1, ColVal, Len(ColVal), pcblen)
    Breakfast = Val(ColVal)
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 9, 1, ColVal, Len(ColVal), pcblen)
    Dinner = Val(ColVal)
    ColVal = String(4000, 0)
    Rc = SQLGetData(Hstmt, 10, 1, ColVal, Len(ColVal), pcblen)
    AreaId = Val(ColVal)
    ColVal = String(40, 0)
    Rc = SQLGetData(Hstmt, 11, 1, ColVal, Len(ColVal), pcblen)
    Input_time = TrimStr(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 Restaurant WHERE Rname='" + 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 In_DB(ByVal TmRname As String) As Boolean
  DB_Connect
  
  SqlStmt = "SELECT * FROM Restaurant WHERE Rname='" + Trim(TmRname) + "'"
  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 Sub Insert()
  dd = Date
  dd = Format(dd, "yyyy-mm-dd")
  t = Time
  tt = Format(tt, "hh:mm")
  
  DB_Connect
  
  SqlStmt = "INSERT INTO Restaurant (Rname, Rlevel, Contact, Phone, Address," _
          + " Postcode, Breakfast, Dinner, AreaId, Input_time)" _
          + " VALUES('" + Trim(Rname) + "','" + Trim(Rlevel) _
          + "','" + Trim(Contact) + "','" + Trim(Phone) + "','" _
          + Trim(Address) + "','" + Trim(Postcode) + "'," _
          + Trim(Breakfast) + "," + Trim(Dinner) + "," _
          + Trim(AreaId) + ",'" + dd + " " + tt + "')"
  OdbcExt (SqlStmt)
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  DB_Disconnect
End Sub

Public Sub LoadRestaurant_ByArea(ByVal TmpAreaId As Long)
  Dim i As Integer
  Erase ArrRes
  ReDim ArrRes(0)
  
  DB_Connect
  SqlStmt = "SELECT Rname FROM Restaurant WHERE AreaId=" _
          + Trim(TmpAreaId) + " ORDER BY Rname"
  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 ArrRes(i + 1)
    ArrRes(i) = TrimStr(ColVal)
    i = i + 1
  Loop
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)

  DB_Disconnect
End Sub

Public Sub Update(ByVal OriId As String)
  dd = Date
  dd = Format(dd, "yyyy-mm-dd")
  t = Time
  tt = Format(tt, "hh:mm")
  
  DB_Connect
  SqlStmt = "UPDATE Restaurant SET Rname='" + Trim(Rname) _
          + "',Rlevel='" + Trim(Rlevel) + "', Contact='" _
          + Trim(Contact) + "',Phone='" + Trim(Phone) _
          + "', Address='" + Trim(Address) + "', Postcode='" _
          + Trim(Postcode) + "', Breakfast=" + Trim(Breakfast) _
          + ", Dinner=" + Trim(Dinner) + ", AreaId = " _
          + Trim(AreaId) + ", Input_time='" + Trim(dd) + " " _
          + Trim(tt) + "' WHERE Rid=" + Trim(OriId)
  OdbcExt (SqlStmt)
  Rc = SQLFreeStmt(Hstmt, SQL_DROP)
  DB_Disconnect
End Sub