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| getting bytes ans Codepage of a Textmessage |
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| ThomasT |
 Posted: Tue Apr 25, 2006 1:53 am Post subject: getting bytes ans Codepage of a Textmessage |
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Novice
Joined: 23 Apr 2006
Posts: 12
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Hallo!
How can I get the "raw" bytes of a JMSTextmessage?
There's a method _exportBody; but I couldn't found a documentation.
How can I read the Codepage. There's a protected field an with some hacks I could read read it, but what's the correct way?
Thank you for help.
Greetings Thomas |
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| fjb_saper |
| Posted: Tue Apr 25, 2006 2:59 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Can you be a little more specific about what you are trying to do and really why you are trying to do it? I have a feeling there is a much easier way but we don't know enough about your problem to help you with it.
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| mvic |
| Posted: Tue Apr 25, 2006 3:17 am Post subject: Re: getting bytes ans Codepage of a Textmessage |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| ThomasT wrote: |
| How can I get the "raw" bytes of a JMSTextmessage? |
Use MQGET in a C app. Is this different from the answer you were looking for? If so, it may help if you re-state the problem.
| Quote: |
| How can I read the Codepage. |
If this was written from JMS classes, this will probably be 819 or 1208, at a guess. But this is text, which can be extracted from the message using the suitable available Java methods. So, with fjb_saper, I am wondering Why?  |
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| ThomasT |
| Posted: Tue Apr 25, 2006 3:53 am Post subject: |
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Novice
Joined: 23 Apr 2006
Posts: 12
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The conditions are:
Clientside: java, means jms, on different mashines (WinXP, Win2000, Unix)
Serverside: mq with xml-text as message. Textmessage.
Nothing more is really specified!
The best would be that the client is able to handle all kind of different incoming message. Even those which are actually wrong.
I noticed that there are no comprehensible correlation during codepage conversion. Sometimes even when the protected field codepage in JMSTextMessage says "UFT-8" theres no conversion from UFT-8 done.
But from cp1252 etc.pp.
I read the manuals but I didn't found the useful information.
You're right there would be another solution: using bytemessage, but the sender sets the Textmessage-flag. And its an political issue that this cannot be changed. |
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| briancop |
| Posted: Tue Apr 25, 2006 11:37 pm Post subject: |
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Apprentice
Joined: 04 Apr 2005
Posts: 28
Location: Hursley, UK
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If using Java you have 2 choices for MQ API - JMS or MQ Classes for Java. From the little we've seen of your requirements JMS is probably the right choice, but if you really need to get in and deal directly with individual MQ fields then MQ Classes for Java gives you a more direct access.
If using JMS Text Messages,
point 1 - don't even think about using the protected fields of the message classes. They are protected for a reason; they are subject to change release to release and for internal use only
point 2 - the idea of a Text Message is that it contains Text rather than raw bytes. When a producer app populates the Text Message they create a java String in whatever codepage suits them and pass it to JMS. JMS will then send it over WMQ in some form such that the textual content is preserved (e.g. in UTF-8 as a way of encoding any string regardless of original codepage), so that a consumer app can just get a java String and read the text from it in whatever codepage suits them. Java/JMS will handle whatever codepage conversions are required to do this
point 3 - as a result of 2, you shouldn't need to worry about the internal codepage that is used. If, for some reason, you do need to worry about it (e.g. because the producer was not a JMS app but was pretending to act like one and got it wrong) then MQ Classes for Java may be a better bet for you |
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| ThomasT |
| Posted: Wed Apr 26, 2006 7:34 am Post subject: |
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Novice
Joined: 23 Apr 2006
Posts: 12
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Hallo!
I'll look at the MQ Classes you mentioned.
Perhaps it helps. |
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