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_connection = New Connection(theHostAddress) AddHandler _connection.OnConnected, AddressOf ConnectHandler AddHandler _connection.OnDisconnected, AddressOf DisconnectHandler End Sub ' returns the response Public Function Send(ByVal theLocalPath As String, _ ByVal theSequenceNumber As Integer, _ ByVal theMessage As String) As String Dim semaphore As ThreadSemaphore = Nothing SyncLock (Me) ' we use a lock here, to prevent concurrent requests ' from getting mixed together on their way out _connection.Connect() _connection.LastActivity = DateTime.Now Dim request As New HttpRequest(_connection.Socket) request.Post(theLocalPath, theSequenceNumber, theMessage) semaphore = _blockedRequests.Add(theSequenceNumber, theMessage) End SyncLock ' block until the response arrives, or a timeout occurs If Not semaphore.Wait(_rxTimeout) Then Throw New Exception("No response received") End If ' get the response from the semaphore Dim response As Byte() = semaphore.response _blockedRequests.Remove(theSequenceNumber) Return Encoding.UTF8.GetString(response) End Function Public Sub Disconnect() _connection.Disconnect() End Sub Sub HandleResponse(ByVal theSocket As Socket) ' read the response Dim response As New HttpResponse(theSocket) response.Get() ' get the semaphore for the blocked request thread Dim semaphore As ThreadSemaphore = _blockedRequests.Get(response.SequenceNumber) If semaphore Is Nothing Then Throw New Exception("No pending request found for response") End If ' save the response in the semaphore semaphore.response = response.Body birt data matrix Java Data Matrix Barcode Generator - BarcodeLib.com
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I've got the matrix and some sub reports working but now I need to get ... I have a crosstab report that uses a data set that looks like and The ALTER SESSION command enables you to change dynamic parameter values for the duration of the session that issues the command. The ALTER SESSION command is used only to change a parameter s value temporarily. Here is the general syntax for the command: ALTER SESSION SET parameter_name=value; The ALTER SYSTEM statement changes the parameter s value for all sessions. However, these changes will be in force only for the duration of the instance; when the database is restarted, these changes will go away, unless you modify the init.ora file accordingly or you use the SPFILE. Here is the syntax for this command: ALTER SYSTEM SET parameter_name=value; birt data matrix Barcode Generator for Eclipse Birt Application | Eclipse Plugins ...
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Barcode for Eclipse BIRT which is designed to created 1D and 2D barcodes in Eclipse ... Barcode for Eclipse BIRT helps users generate standard Data Matrix ... The ALTER SYSTEM . . . DEFERRED statement will make the new values for a parameter effective for all sessions, but not immediately. Only sessions started after the statement is executed are affected. All currently open sessions will continue to use the old parameter values. Here is the syntax for this command: ALTER SYSTEM SET parameter_name DEFERRED; The ALTER SYSTEM . . . DEFERRED statement works only for only a few initialization parameters. Therefore, you must use the ALTER SYSTEM statement instead for systemwide initialization parameter birt data matrix Eclipse Birt Barcode Component - J4L Components
The J4L Barcodes are integrated in Eclipse Birt 4.3 or later. The components support 1D barcodes, PDF417, Datamatrix , QRCode, Azteccode and Maxicode. ' unblock the request thread waiting for this response semaphore.Signal() End Sub Private Sub ConnectHandler(ByVal theSocket As Socket) _receiver = New Receiver(theSocket) AddHandler _receiver.OnIdle, AddressOf ReceiverIdle AddHandler _receiver.OnResponse, AddressOf HandleResponse _receiverThread = New Thread(AddressOf _receiver.Run) _receiverThread.Name = "Receiver" _receiverThread.IsBackground = True _receiverThread.Start() End Sub Private Sub DisconnectHandler() _receiver.Stop() _receiverThread.Join() ' wait for thread to stop _receiver = Nothing End Sub Sub ReceiverIdle() Thread.Sleep(10) End Sub End Class Let s look at the salient Worker objects in the connection Coordinator team, starting with Connection. This class just handles the opening and closing of TCP socket connections. It fires an event when a connection is opened or closed. Listing 12-7 and Listing 12-8 show C# and VB .NET implementations. Listing 12-7. The C# Implementation of the Connection Class public class Connection { Socket socket; public Socket Socket { get {return socket;} } string hostAddress; public string HostAddress { get {return hostAddress;} set {hostAddress = value;} } public bool Connected { get {return socket != null;} } changes. Any parameter value change you make through the ALTER SYSTEM statement, of course, applies immediately to all sessions. When you change the value of a parameter by using the ALTER SESSION or ALTER SYSTEM statement, the change in the parameter s value will last only for the duration of the instance. When you have to restart the instance, the parameter values will revert to their old values, unless you record the changes in the init.ora file or you use (started up your instance with) the SPFILE. The following sections present the most important Oracle initialization parameters you need to be familiar with. For the sake of clarity, I ve divided the parameters into various groups, such as auditrelated parameters, process and session parameters, memory configuration parameters, and so on. My parameter groupings are arbitrary and are designed simply to make it easier to understand the configuration of a new database. Although this list looks long and formidable, it isn t a complete list of the initialization parameters for Oracle Database 11g it s a list of only the most commonly used parameters. Oracle Database 11g has over 250 documented initialization parameters that DBAs can configure (if you add the undocumented or hidden initialization parameters, the total comes to well over a thousand parameters). Don t be disheartened, though. The basic list of parameters that you need in order to start your new database can be fairly small and easy to understand. Oracle has, for the first time, grouped together the most common initialization parameters, and according to Oracle, most databases should only need these basic parameters set. Oracle advises you to become familiar with these basic parameters and to use other parameters only when directed to do so by the documentation or in special circumstances. Later on, as you study various topics such as backup and recovery, performance tuning, networking, and so on, you ll have a chance to really understand how to use the more esoteric initialization parameters.
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