Passing serialized object and data as byte stream over same stream

I am writing a chat program, I am keeping online user
List as Vector A would like to pass online user List
to client as Vector object also the client message is
sended as byte stream. Is it possible to pass object
and data as byte stream over the same stream.Why are you sending the client message as a byte stream?
String seems a much more logical type. I would assume that you're reading strings from one client, and printing them on the others. If you translate to bytes in the middle, you're going to have to ensure that you decode those streams correctly on the other side.
And if I were implementing this, I probably wouldn't send the raw Vector or List ... instead, I'd create a Message object, which wraps the Vector/String, and a MessageDispatcher interface, which the client implements to handle incoming messages.

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Since Strings are serializable you could just send a stream of serialized objects then you don't have to know anything about the format.

Data plug-in for binary data with byte streams of variable length

Hi there,
I would like to write a data plug-in to read binary data from file and I'm using DIAdem 10.1.
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Kind regards,
Stefan

Hi Brad,
thank you for the very quick response!
I forgot to mention, that the data in the byte stream can actually be ignored, it is no data to be evaluated in DIAdem (it is picture data and the picture size varies from data set to data set).
So basically, of each data set I would like to read the fixed-structure data (which is the first part of the data set) and discard the variable byte stream (last part of the data set).
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´
If I understood right, would it be possible to set the BlockLength of each data set by assigning Block.BlockLength = fixedSize-Value3 and to use Direct Access Channels for reading fixedSize-Value1 and fixedSize-Value2 ?
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Serialized Objects and Servlets

I'm having a lot of trouble accessing a serialized object and displaying it in a servlet. I get the following exception:
java.io.StreamCorruptedException: Type code out of range, is -84
Can anyone help me out here?

OK... here's some of the code I'm using...
public Object readObject()
throws IOException, ClassNotFoundException
          oin = new ObjectInputStream(fin);
          Object obj = oin.readObject();
          oin.close();
          return obj;
public void writeObject(Object data)
throws IOException
          oout = new ObjectOutputStream(fout);
          oout.writeObject(data);
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Essentially, my servlet creates and instance of an ObjectManager class. This ObjectManager then tries to execute the readObject method above.
The whole process comes to a grinding halt at this point:
Object obj = oin.readObject();
I think this problem has to do with the way that I'm trying to access the file to which I have serialized my object. The problem is that I can't think of any other way to do it. Here's how I am currently referencing the file that holds my serialized object:
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Clone schema with current db objects and data.

Hi Cloud expert,
I need feature to clone existing schema and create new schema with schema as a service. I created profile that export schema with database objects and data. I created template that use the profile created. While provisioning the template I found all the database objects with template. Now I need a solution to clone the current schema with all the objects at current time. The way I tried contains all the objects that were exists while exporting the schema. I need the solution to clone schema so that it will contains all the objects and data right now.
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Thank You in advance.
Dilli R. Maharjan

One option is to run BACKUP/RESTORE, once you have restored you run:
SELECT 'ALTER TABLE ' + quotename(s.name) + '.' + quotename(o.name) +
   ' DISABLE TRIGGER ALL '
FROM   sys.schemas s
JOIN   sys.objects o ON o.schema_id = s.schema_id
WHERE o.type = 'U'
AND EXISTS (SELECT *
   FROM   sys.triggers tr
   WHERE tr.parent_id = o.object_id)
Copy result and paste into a query window do to run. Next:
SELECT 'DELETE ' + quotename(s.name) + '.' + quotename(o.name)
FROM   sys.schemas s
JOIN   sys.objects o ON o.schema_id = s.schema_id
WHERE o.type = 'U'
Run this result until you don't get any more errors.
Run the first query again, but change DISABLE to ENABLE.
This is more long-winding than scripting, particularly if you have lots of data. But you know that you will not make any changes whatsoever to the schema.
The scripting in SSMS generally does it right, I believe, but some items are not scripted by default. If you run BACKUP/RESTORE, you know that you get a faithful copy.
Of course, the best way is to keep your code under version control and take the version control system as your ultimate truth.
Erland Sommarskog, SQL Server MVP, [email protected]

Example of Serialized objects and non-Serialized objects

Hi,
Can you please tell me some of eample of Serialized objects and nonserialized objects in java and j2ee.
Thanks
alex.

sravan123 wrote:
Serialised objects are File ,all Collection classes , subclasses of Throwable and subclasses of Number.
Non-Serialised objects are Connection,DataSourrce,Resultset , Thread and MathYou forgot to log in as another user before answering your own question incorrectly for reasons I'm currently unable to fathom

DAO pattern Value Objects and Data Streams

Suppose we have a PersonVO (java bean) with simple attributes i.e. first and last name then the DAO is quite simple and clients of the DAO layer pass VO back and forth (really cleanly).
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I can picture not saving the image bytes themselves
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Putting streams into a database like that can choke
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CREATE TABLE images (
name VARCHAR(32) NOT NULL,
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imagetype VARCHAR(4),
CONSTRAINT image_pk PRIMARY KEY (name)
);After retrieving the image into a byte[] you can either
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(don't forget to set your content type through HttpServletResponse.setContentType())
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Now if you're passing that VO to a JSP, the link to
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10 % 0
java.lang.ArithmeticException: / by zero;-)

Encrytiong serialized object and seald object

Hello,
At the moment I'm writing some code using serialized object stream encrytion. But lately I dicovered sth like sealed objects. My question is what is the difference between creating a SealedObject and then writting it to a stream and encrypting the serialized object as a stream?
1. What is the purpose for SealedObject regarding the possibility of encrypting serialized objects with streams?
2. Are there any differences in use of those two ways of securing objects?*
Thanks for Your replies in advance
DT

Read it but not shure wht exactly do U mean. It doesn't ansewer mys questions: of what is the reason for usinf sealedobject where we can encrypt the object with the CipherInputStream (which I have posted as question 1 in the 1st post) and what are the differences in idea of use meaning where should we use CipherInputStream and where Seald object?

Copying database objects and data from one server database to another server database in AG group

Hi,
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The vendor's database on the cluster is in an AG group and encrypted.
Right now, I plan to restore the database on a sql staging server and use the SSIS Transfer SQL Server Objects Task to copy the table structure and data from Stage to the Production database of same name and I would first drop the objects in production
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Sue

IF I understand anything about clustered sql and logging, the sql server should take the log file and recreate the same scenario on the passive side of the cluster.
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Hi Sue,
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There are some similar links for your reference.
http://dba.stackexchange.com/questions/21404/do-schema-changes-break-sql-server-2012-alwayson-or-are-they-handled-transpare
http://blogs.msdn.com/b/sqlgardner/archive/2012/08/28/sql-2012-alwayson-and-backups-part-3-restore.aspx
Thanks,
Lydia Zhang
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Lydia Zhang
TechNet Community Support

Problem with serialized objects and JWS

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Where is the class contained then?

Search script generator for all objects and data (!) from a user/schema ?

Is there a way to create a script which (when run) creates all the existing
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This (PL-)SQL script should contain all INSERTS for the currently existing rows of
all the TABLEs.
When I use e.g. export to Dumpfile I have at first find all TABLEs and components
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I just want to specify the user name similar to
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So that I understand your requirements exactly, are you asking for your script to ...
1/ export from database A the entire schema of a specified user
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Hope that helps
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Best way to port all Windows XP files, applicaitons and data form my PC over to iMac and how to run those Windows apps on Mac?ns on Mac?

I have a Windows XP machine with apps, files and data. I want to get all that over to my Mac, and also run those apps under Windows XP or even Windows 7 on my Mac. Im wondering:
1. How best to get those files over to my Mac
2. How to run those apps and use my Windows based files/data on my Mac
3. How best to run Windows on my Mac....either partitiion my Mac's hard drive and boot up either Windows or MAC OS, or run some other program where I can easily switch back and forth form Windows to MAC OS, or perhaps get it all on an external hard drive, maybe partition that Windows/MAC OS and boot from that?
Thanks!

I agree you would benefit by using virtualizaiton software. Virtual Box is one alternative the commercial apps for doing virtualization are Parallels and VMWare Fusion which you also might be interested in for their support and updates.
Also you may benefit by book marking and using:
Mac 101 , Switch 101 & Find Out How Video tutorials
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In other words for your stated needs I don't see much reason to stay with MS Windows. You may have other considerations, if you do please state them, some may be real issues and some may be easily overcome.

Can I pass serialized object as argument through WebStart?

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Is this possible?
Thanks
-ken

yes, you can. although I am not sure how long that string can be? what are you going to store in the string - what kind of information?
I would generally store configuartion parameters in a seperate file. You could pass the path to the config file in your arguments...

Business Objects and Data Services on VMWare

My company has a requirement to deploy Business Objects 4.0 as well as Data Services.
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Hi,
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MSS Object and data provider Important

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Yogesh

hi
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Regards
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Passing serialized object and data as byte stream over same stream

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