Firebird .NET提供程序中是否存在可更新结果集和记录集？

Question

我昨天试过Firebird和.NET Provider。 Firebird肯定会击败SQL Compact Edition。我很惊讶它的功能和精度。但是当我无法在.NET提供程序中找到可更新的RecordSet/ResultSet功能时，我感到很难过。 FBResultSet不包含任何内容，没有行添加，创建，修改，没有任何内容。任何人都知道这个功能是否存在于Firebird的Ado .Net提供程序中，因为没有文档。我想获得帮助，因为我正在等待将Firebird整合到我的免费软件应用程序中。另外，如果有替换函数来实现可更新的RecordSet，ResultSet。请帮帮我。

问候。

Answer 1

我去过那里了，做完了，拿到了T恤。所以，当我感到你的痛苦时，我会给你一些应该帮助你的代码。

我用存储过程（sprocs）来做任何记录更新addtion等，然后我写了一个类包装来调用sprocs。

在这里输入的代码

所以，用此代码为存储过程：

ALTER PROCEDURE SP_IU_BATCH (
    AUTYPE INTEGER, 
    BATCHID INTEGER, 
    MAT_BATCHID INTEGER, 
    DOS DATE, 
    FACILITYID INTEGER) 
RETURNS (
    RTNIDX INTEGER) 
AS 
BEGIN 
    IF (:AUTYPE = 0) THEN 
    BEGIN 
     FOR 
      SELECT GEN_ID(GEN_BATCH_ID,1) 
      FROM RDB$DATABASE 
     INTO 
      :RTNIDX 
     DO 
     BEGIN 
      INSERT INTO BATCH (BATCHID, MAT_BATCHID, DOS, FACILITYID) 
      VALUES (:RTNIDX, :MAT_BATCHID, :DOS, :FACILITYID); 
     END 
    END 
    ELSE 
    BEGIN 
     UPDATE BATCH SET MAT_BATCHID=COALESCE(:MAT_BATCHID, MAT_BATCHID), DOS=COALESCE(:DOS, DOS), 
     FACILITYID=COALESCE(:FACILITYID, FACILITYID) 
     WHERE BATCHID=:BATCHID; 
    END 
END 

你会与此数据库包装访问：myfbdb.vb

Imports FirebirdSql.Data.Firebird 
Imports FirebirdSql.Data.Firebird.Services 
Imports FirebirdSql.Data.Firebird.Isql 
Imports System.IO 

Public Class myfbdb 

#Region " Private Variables " 
    Private dbConn As FbConnection = Nothing, dbBatch As Batch = Nothing 
    Private Const dbName As String = "yourdatabasename.fdb", dbUser As String = "SYSDBA", dbPass As String = "yourpassword" 
#End Region 

#Region " Private Methods " 
    Private Sub Connect() 
     If dbConn Is Nothing Then 
      Try 
       dbConn = New FbConnection(GetConnString) 
      Catch ex As FbException 
       RaiseError(ex) 
      End Try 
     End If 
    End Sub 

    Private Sub Initialize() 
     dbBatch = New Batch 
     dbBatch.dbConn = Me 
    End Sub 
#End Region 

#Region " Private Functions " 
    Private Function GetConnString() As String 
     Dim rtnString As String = Nothing 
     Dim fbCSB As New FbConnectionStringBuilder 
     fbCSB.Database = dbName 
     fbCSB.Password = dbPass 
     fbCSB.UserID = dbUser 
     fbCSB.ServerType = 1 
     rtnString = fbCSB.ToString 
     fbCSB = Nothing 
     Return rtnString 
    End Function 
#End Region 

#Region " Public Properties " 
    Public ReadOnly Property cmdb() As FbConnection 
     Get 
      Return dbConn 
     End Get 
    End Property 

    Public ReadOnly Property cmBatch() As Batch 
     Get 
      Return dbBatch 
     End Get 
    End Property 
    End Property 
#End Region 

#Region " Public Methods " 

#Region " New " 
    Public Sub New() 
     Connect() 
     Initialize() 
    End Sub 
#End Region 

#Region " Finalize " 
    Protected Overrides Sub Finalize() 
     MyBase.Finalize() 
     Close() 
     Unload() 
    End Sub 
#End Region 

#Region " Unload " 
    Public Sub Unload() 
     If Not dbConn Is Nothing Then 
      If dbConn.State = Data.ConnectionState.Open Then 
       dbConn.Close() 
      End If 
      dbConn = Nothing 
     End If 
     UnInitialize() 
    End Sub 
#End Region 

#Region " Open/Close " 
    Public Sub Open() 
     Try 
      If Not dbConn Is Nothing Then 
       If dbConn.State = Data.ConnectionState.Open Then 
        dbConn.Close() 
       End If 
       dbConn.Open() 
      End If 
     Catch ex As Exception 
      RaiseError(ex) 
     End Try 
    End Sub 

    Public Sub Close() 
     If Not dbConn Is Nothing Then 
      dbConn.Close() 
     End If 
    End Sub 
#End Region 

#End Region 

End Class 

这里是Sproc的批量包装：

Imports FirebirdSql.Data.Firebird 
Imports FirebirdSql.Data.Firebird.Services 
Imports FirebirdSql.Data.Firebird.Isql 

Public Class Batch 

#Region " Private Variables " 
    Private clsCM As myfbdb 
#End Region 

#Region " Private Enums " 
    Private Enum AUType 
     Add = 0 
     Update = 1 
    End Enum 
#End Region 

#Region " Stored Procedures " 

#Region " Add/Update " 
    Private Function AU_Batch(ByVal itmBatch As cmdbType_Batch, ByVal au As AUType) As Integer 
     Try 
      Dim rtnIndex As Integer = -1 
      'Create Temporary Command 
      Dim tmpTrans As FbTransaction = clsCM.cmdb.BeginTransaction 
      Dim tmpSQLCommand As FbCommand = New FbCommand("SP_IU_BATCH", clsCM.cmdb, tmpTrans) 
      tmpSQLCommand.CommandType = Data.CommandType.StoredProcedure 

      'Add Parameters 
      Dim prmAUType As FbParameter = tmpSQLCommand.Parameters.Add("@AUTYPE", FbDbType.Integer) 
      Dim prmBatchID As FbParameter = tmpSQLCommand.Parameters.Add("@BATCHID", FbDbType.Integer) 
      Dim prmMAT_BatchID As FbParameter = tmpSQLCommand.Parameters.Add("@MAT_BATCHID", FbDbType.Integer) 
      Dim prmDOS As FbParameter = tmpSQLCommand.Parameters.Add("@DOS", FbDbType.Date) 
      Dim prmFacilityName As FbParameter = tmpSQLCommand.Parameters.Add("@FACILITYNAME", FbDbType.VarChar, 250) 
      Dim prmFacilityID As FbParameter = tmpSQLCommand.Parameters.Add("@FACILITYID", FbDbType.Integer) 
      Dim prmRtnIdx As FbParameter = tmpSQLCommand.Parameters.Add("@RTNIDX", FbDbType.Integer) 
      'Specify Output Parameters 
      prmRtnIdx.Direction = Data.ParameterDirection.Output 
      'Set the Parameter Values 
      With itmBatch 
       prmAUType.Value = CInt(au) 
       prmBatchID.Value = .BatchID 
       prmMAT_BatchID.Value = .MAT_BatchID 
       prmDOS.Value = .DOS 
       prmFacilityName.Value = clsCM.enc.EncryptString128Bit(.FacilityName, Crypt_Text(clsCM.ivKey)) 
       prmFacilityID.Value = .FacilityID 
      End With 

      'Execute the Stored Procedure 
      tmpSQLCommand.ExecuteNonQuery() 

      If au = AUType.Add Then 
       rtnIndex = prmRtnIdx.Value 
      End If 

      tmpTrans.Commit() 

      'Clean up 
      tmpSQLCommand = Nothing 
      Return rtnIndex 
     Catch ex As Exception 
      RaiseError(ex) 
      Return Nothing 
     End Try 
    End Function 
#End Region 

#Region " Public Functions " 
    Public Function AddBatch(ByVal itmBatch As cmdbType_Batch) As Integer 
     Try 
      clsCM.Open() 
      Dim rtnInteger As Integer = AU_Batch(itmBatch, AUType.Add) 
      clsCM.Close() 
      Return rtnInteger 
     Catch ex As Exception 
      RaiseError(ex) 
      clsCM.Close() 
      Return Nothing 
     End Try 
    End Function 

    Public Function UpdateBatch(ByVal itmBatch As cmdbType_Batch) As Integer 
     Try 
      clsCM.Open() 
      Dim rtnInteger As Integer = AU_Batch(itmBatch, AUType.Update) 
      clsCM.Close() 
      Return rtnInteger 
     Catch ex As Exception 
      RaiseError(ex) 
      clsCM.Close() 
      Return Nothing 
     End Try 
    End Function 
#End Region 

#Region " Public Properties " 
    Public WriteOnly Property dbConn() As CodingModuleDB 
     Set(ByVal value As CodingModuleDB) 
      clsCM = value 
     End Set 
    End Property 
#End Region 

End Class 

这是很多代码，但我不得不这样做，很难做到这一点。我希望你可以用这个来弥补你的差距来起跑。火鸟真的是一个伟大的数据库。