Read chunks from ZipOutputStream

How can I read chuncks of data from ZipOutputStream object?
Here is my code:
ZipOutputStream out = new ZipOutputStream(new FileOutputStream(outFilename))
String name="XXX";
ZipEntry templateDir = new ZipEntry(name + "/");
ZipEntry templatesFile = new ZipEntry(name +"/" + name + ".xml");
zip.putNextEntry(templateDir);
zip.putNextEntry(templatesFile);
XMLOutputter outputter = new XMLOutputter(Format.getPrettyFormat());
outputter.output(doc, zip);
zip.closeEntry();
I need to create a zip file by chunks but by using the JDOM, the output method put the entire document to be a zip.
How can I create chunks of it?
Is the only way is to create it as is and then read the zip as chunks?
Please supply examples.
Thanks in advanced...

Hi chelseasadhu,
To achieve your requirement, there are two methods: use Lookup Transformation or Merge Join Transformation. For more details, please see:
Method1: Lookup Transformation
Drag a Data Flow Task to Control Flow Task.
Create an OLE DB Connection Manager that connects to the corresponding server database.
Create two Excel Connection Managers that connects to the corresponding excel files.
Drag an Excel Source that connects to the source Excel Connection Manager.
Drag Lookup Transformation that connects to the OLE DB Connection Manager, then select emp table from the drop-down list.
Map empid from Lookup Columns to Input Columns, and select all columns from Lookup Columns pane.
Connect the Lookup Transformation to target Excel Destination.
Method2: Merge join Transformation
Drag a Data Flow Task to Control Flow Task.
Create an OLE DB Connection Manager that connects to the corresponding server database.
Create two Excel Connection Managers that connects to the corresponding excel files.
Drag an Excel Source that connects to the source Excel Connection Manager.
In the Advanced Editor for OLE DB Source dialog box, change the IsSorted property of OLE DB Source Output to True, then change the SortKeyPosition property of empid output column to 1.
In the Advanced Editor for Excel Source dialog box, change the IsSorted property of Excel Source Output to True, then change the SortKeyPosition property of empid output column to 1.
Drag Merge join Transformation connect to those two source, then select Inner join as Join type.
Select all columns from OLE DB Source pane.
Connect the Merge Join Transformation to target Excel Destination.
Thanks,
Katherine Xiong
Katherine Xiong
TechNet Community Support

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Hi Everybody,
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Here the ServiceDefinition.csdef file content:
<?xml version="1.0" encoding="utf-8"?>
<ServiceDefinition name="EmacCloudService" xmlns="http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceDefinition" schemaVersion="2014-01.2.3">
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<Imports>
<Import moduleName="Diagnostics" />
<Import moduleName="RemoteAccess" />
<Import moduleName="RemoteForwarder" />
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This WorkerRole is just creating a TcpListener object listening to the configured port (using the RoleEnvironment instance) and waits for an incoming connection. It receives a message and returns a hardcoded message (see code snippet below).
namespace TcpListenerWorkerRole
using System;
using System.Net;
using Microsoft.WindowsAzure.ServiceRuntime;
using System.Net.Sockets;
using System.Text;
using Roche.Emac.Infrastructure;
using System.IO;
using System.Threading.Tasks;
using Microsoft.WindowsAzure.Diagnostics;
using System.Linq;
public class WorkerRole : RoleEntryPoint
public override void Run()
// This is a sample worker implementation. Replace with your logic.
LoggingProvider.Logger.Info("TcpListenerWorkerRole entry point called");
TcpListener listener = null;
try
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listener.Start();
LoggingProvider.Logger.Info(string.Format("TcpListener started at '{0}:{1}'", RoleEnvironment.CurrentRoleInstance.InstanceEndpoints["Endpoint1"].IPEndpoint.Address, RoleEnvironment.CurrentRoleInstance.InstanceEndpoints["Endpoint1"].IPEndpoint.Port));
catch (SocketException ex)
LoggingProvider.Logger.Exception("Unexpected exception while creating the TcpListener", ex);
return;
while (true)
Task.Run(async () =>
TcpClient client = await listener.AcceptTcpClientAsync();
LoggingProvider.Logger.Info(string.Format("Client connected. Address='{0}'", client.Client.RemoteEndPoint.ToString()));
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char[] validChars = new char[readedChars];
Array.ConstrainedCopy(receivedChars, 0, validChars, 0, readedChars);
input = new string(validChars);
LoggingProvider.Logger.Info("This is what the host sent to you: " + input+". Readed chars=" + readedChars);
try
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catch (Exception e)
LoggingProvider.Logger.Exception("Unexpected exception while writting the response", e);
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break;
catch (Exception ex)
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break;
}).Wait();
public override bool OnStart()
// Set the maximum number of concurrent connections
ServicePointManager.DefaultConnectionLimit = 12;
DiagnosticMonitor.Start("Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString");
RoleEnvironment.Changing += RoleEnvironment_Changing;
return base.OnStart();
private void RoleEnvironment_Changing(object sender, RoleEnvironmentChangingEventArgs e)
// If a configuration setting is changing
LoggingProvider.Logger.Info("RoleEnvironment is changing....");
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
As you can see, nothing special is being done. I've used the RoleEnvironment.CurrentRoleInstance.InstanceEndpoints to retrieve the current IPEndpoint.
Running the Cloud Service in the Windows Azure Compute Emulator everything works fine, but when I deploy it in Azure, then I receive the following Exception:
2014-08-06 14:55:23,816 [Role Start Thread] INFO EMAC Log - TcpListenerWorkerRole entry point called
2014-08-06 14:55:24,145 [Role Start Thread] INFO EMAC Log - TcpListener started at '100.74.10.55:10100'
2014-08-06 15:06:19,375 [9] INFO EMAC Log - Client connected. Address='196.3.50.254:51934'
2014-08-06 15:06:19,375 [9] INFO EMAC Log - Buffer size: 65536
2014-08-06 15:06:45,491 [9] FATAL EMAC Log - Unexpected exception while Reading the request
System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
--- End of inner exception stack trace ---
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.IO.StreamReader.ReadBuffer(Char[] userBuffer, Int32 userOffset, Int32 desiredChars, Boolean& readToUserBuffer)
at System.IO.StreamReader.Read(Char[] buffer, Int32 index, Int32 count)
at TcpListenerWorkerRole.WorkerRole.<>c__DisplayClass0.<<Run>b__2>d__0.MoveNext() in C:\Work\Own projects\EMAC\AzureCloudEmac\TcpListenerWorkerRole\WorkerRole.cs:line 60
I've already tried to configure an internal port in the ServiceDefinition.csdef file, but I get the same exception there.
As you can see, the client can connect to the service (the log shows the message: Client connected with the address) but when it tries to read the bytes from the stream, it throws the exception.
For me it seems like Azure is preventing the retrieval of the message. I've tried to disable the Firewall in the VM in Azure and the same continues happening.
I'm using Windows Azure SDK 2.3
Any help will be very very welcome!
Thanks in advance!
Javier
En caso de que la respuesta te sirva, porfavor, márcala como válida
Muchas gracias y suerte!
Javier Jiménez Roda
Blog: http://jimenezroda.wordpress.com

hi Javier,
I changed your code like this:
private AutoResetEvent connectionWaitHandle = new AutoResetEvent(false);
public override void Run()
TcpListener listener = null;
try
listener = new TcpListener(
RoleEnvironment.CurrentRoleInstance.InstanceEndpoints["Endpoint"].IPEndpoint);
listener.ExclusiveAddressUse = false;
listener.Start();
catch (SocketException se)
return;
while (true)
IAsyncResult result = listener.BeginAcceptTcpClient(HandleAsyncConnection, listener);
connectionWaitHandle.WaitOne();
The HandleAsync method is your "While (true)" code:
private void HandleAsyncConnection(IAsyncResult result)
TcpListener listener = (TcpListener)result.AsyncState;
TcpClient client = listener.EndAcceptTcpClient(result);
connectionWaitHandle.Set();
NetworkStream netStream = client.GetStream();
StreamReader reader = new StreamReader(netStream);
StreamWriter writer = new StreamWriter(netStream);
writer.AutoFlush = true;
string input = string.Empty;
try
char[] receivedChars = new char[client.ReceiveBufferSize];
// LoggingProvider.Logger.Info("Buffer size: " + client.ReceiveBufferSize);
int readedChars = reader.Read(receivedChars, 0, client.ReceiveBufferSize);
char[] validChars = new char[readedChars];
Array.ConstrainedCopy(receivedChars, 0, validChars, 0, readedChars);
input = new string(validChars);
// LoggingProvider.Logger.Info("This is what the host sent to you: " + input + ". Readed chars=" + readedChars);
try
string orderResultFormat = Encoding.ASCII.GetString(Encoding.ASCII.GetBytes("\xB")) + @"MSH|^~\&|Instrument|Laboratory|LIS|LIS Facility|20120427123212+0100||ORL^O34^ORL_O34| 11|P|2.5.1||||||UNICODE UTF-8|||LAB-28^IHE" + Environment.NewLine + "MSA|AA|10" + Environment.NewLine + @"PID|||patientId||""""||19700101|M" + Environment.NewLine + "SPM|1|sampleId&ROCHE||ORH^^HL70487|||||||P^^HL70369" + Environment.NewLine + "SAC|||sampleId" + Environment.NewLine + "ORC|OK|orderId|||SC||||20120427123212" + Encoding.ASCII.GetString(Encoding.ASCII.GetBytes("\x1c\x0d"));
writer.Write(orderResultFormat);
catch (Exception e)
// LoggingProvider.Logger.Exception("Unexpected exception while writting the response", e);
client.Close();
catch (Exception ex)
//LoggingProvider.Logger.Exception("Unexpected exception while Reading the request", ex);
client.Close();
Please try it. For this error message, I suggest you could refer to this thread (http://stackoverflow.com/questions/6173763/using-windows-azure-to-use-as-a-tcp-server
) and this post (http://stackoverflow.com/a/5420788).
Regards,
Will
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I have a strange requirement, We have some standard reports which displays output in drop down blocked data. I want to create a custom report which will get that data in my internal tables.
Just to elaborate this requirement, I will give you a example:
I have a standard report which output as first line 'A' and second line as 'B'. Now when I press drop down in 'A', it displays line items say 1,2,3,4,5.... Similarly block 'B' once when pressed displays line items 6,7,8,9,10.
Here I want a custom report which directly read data from this standard report and gives us the values of line items 1,2,3,4,5 in one internal table and similarly items 6,7,8,9,10 in another internal table.
Hope the question clarifies the requirement now.
Request you to please provide the resolution.
Thanks,
Harjeet

Hi Harjeet,
Use sumit statement for standard program and export the list to memory. and then read list from memory and use in your custom program.
Use below code for reference.
DATA: t_list TYPE abaplist OCCURS 0.
SUBMIT rfdopr10
                ************** your options
                AND RETURN
                EXPORTING LIST TO MEMORY.
CALL FUNCTION 'LIST_FROM_MEMORY'
TABLES
    listobject       = t_list
EXCEPTIONS
    NOT_FOUND        = 1
    OTHERS           = 2.
BR,
Vijay

Read chunks from ZipOutputStream

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