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Message
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| rohitkul |
 Posted: Mon Aug 24, 2009 10:16 pm Post subject: WMB : How to Parse a String in Java Compute Node ? |
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Newbie
Joined: 24 Aug 2009
Posts: 6
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I hav a RCD which gives me the parsed Message like
Message
MRM
Message1
Message2
...............
Messagen
I want to now parse this Message1, Message2 etc by a specific Message Definition, Set and Format using a Java Compute Node. Could you please guide me in this.
I understand that the Message needs to be first converted into BLOB format and then we can use toBitStream function to parse against a Message Set, Defn and Format. But could you please provide me the pseudo code for doing this. |
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| rohitkul |
| Posted: Mon Aug 24, 2009 11:38 pm Post subject: WMB : Parse String Java Compute Node |
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Newbie
Joined: 24 Aug 2009
Posts: 6
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I hav tried with the following code as below. But its not working. Can anybody help me out as to where am I going wrong here ASAP.
MbElement lastchild = root.getLastChild();
// starts the messages now
MbElement lastchildfirst = lastchild.getFirstChild();
MbElement nextElement = lastchildfirst;
while (nextElement != null)
{
MbElement element = nextElement.getNextSibling();
String str = element.getValue().toString();
// Converting string str to BLOB Format
MbElement outRoot = outMessage.getRootElement();
MbElement outParser = outRoot.createElementAsLastChild(MbBLOB.PARSER_NAME);
MbElement outBody = outParser.createElementAsLastChild(MbElement.TYPE_NAME_VALUE, "BLOB", str);
// Parse this element against the Message Type and Set
byte[] tmp = outRoot.getLastChild().toBitstream("MessageDef", "MessageSet", "TDS_FORMAT", 0, 0, 0);
nextElement = element;
} |
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| WMBDEV1 |
| Posted: Tue Aug 25, 2009 12:41 am Post subject: Re: WMB : How to Parse a String in Java Compute Node ? |
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Sentinel
Joined: 05 Mar 2009
Posts: 888
Location: UK
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Why is this your requirement:
| rohitkul wrote: |
I want to now parse this Message1, Message2 etc by a specific Message Definition, Set and Format using a Java Compute Node.
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ESQL will be easier to use and i'd have thought it will perform better.
Elaborate:
| Quote: |
But its not working
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Do you get an error or is the output not as expected? If not why not? |
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| rohitkul |
| Posted: Tue Aug 25, 2009 12:49 am Post subject: How to Parse a String in Java Compute Node ? |
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Newbie
Joined: 24 Aug 2009
Posts: 6
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We need to just ignore the Messages which are not getting Parsed as per the message defn, format and set provided.
Initially there were a no. of messages, but if we had a RCD for parsing these, the flow was not going out of RCD since the RCD block would throw exception if one of our Messages fail. We don't want this to happen, rather just want to discard the Messages not parsed and go further.
If ESQL is better, then could you please suggest how to parse the Message using the Message Defn, Set and Format. |
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| WMBDEV1 |
| Posted: Tue Aug 25, 2009 12:51 am Post subject: Re: How to Parse a String in Java Compute Node ? |
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Sentinel
Joined: 05 Mar 2009
Posts: 888
Location: UK
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| rohitkul wrote: |
If ESQL is better, then could you please suggest how to parse the Message using the Message Defn, Set and Format. |
You can use PARSE ASBITSTREAM and then declare error handlers to handle parsing errors as needed. |
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| rohitkul |
| Posted: Tue Aug 25, 2009 12:55 am Post subject: WMB : How to Parse a String in Java Compute Node ? |
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Newbie
Joined: 24 Aug 2009
Posts: 6
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| Can you provide me the example for doing this. A pseudo code in this case would be appreciable. |
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| rohitkul |
| Posted: Tue Aug 25, 2009 1:14 am Post subject: WMB : How to Parse a String in Java Compute Node ? |
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Newbie
Joined: 24 Aug 2009
Posts: 6
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| I am not able to get an example for PARSE ASBITSTREAM. Can anybody help me out in this case. The documentation is available. But a pseudo code is highly appreciable since its difficult to understand from the documentation. |
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| kimbert |
| Posted: Tue Aug 25, 2009 1:20 am Post subject: |
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Jedi Council
Joined: 29 Jul 2003
Posts: 5542
Location: Southampton
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It's not 'PARSE ASBITSTREAM'.
You use the CREATE statement with the PARSE clause to create a message tree from a BLOB
You use ASBITSTREAM to create a BLOB from a message tree
There are dozens of examples of both statements on this forum. |
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| WMBDEV1 |
| Posted: Tue Aug 25, 2009 1:33 am Post subject: |
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Sentinel
Joined: 05 Mar 2009
Posts: 888
Location: UK
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| kimbert wrote: |
It's not 'PARSE ASBITSTREAM'.
You use the CREATE statement with the PARSE clause to create a message tree from a BLOB
You use ASBITSTREAM to create a BLOB from a message tree
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which leads to ....
PARSE ASBITSTREAM
I understand the point you're making, but I reckon the poster would still end up with "PARSE ASBITSTREAM" in his ESQL. I had hoped to provide enough information for the OP to then be able to go and research this for himself. Maybe if I had written it as PARSE [and] ASBITSTREAM it would have been more correct. |
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| yortch |
| Posted: Tue Aug 25, 2009 9:29 am Post subject: Re: WMB : How to Parse a String in Java Compute Node ? |
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Apprentice
Joined: 30 Aug 2004
Posts: 34
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| rohitkul wrote: |
| I want to now parse this Message1, Message2 etc by a specific Message Definition, Set and Format using a Java Compute Node. Could you please guide me in this. |
By parsing do you mean turning a message tree into a string representation? I was able to parse a XMLNSC tree (e.g. OutputRoot.XMLNSC) into a string using the following code:
| Code: |
byte[] data = xmlMbElement.toBitstream("", "", "", 0, 0, 0);
xmlStr = new String(data);
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Hope this helps! |
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| mqjeff |
| Posted: Tue Aug 25, 2009 10:11 am Post subject: Re: WMB : How to Parse a String in Java Compute Node ? |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| yortch wrote: |
| I was able to parse a XMLNSC tree (e.g. OutputRoot.XMLNSC) into a string |
No, you weren't.
You were, perhaps, able to SERIALIZE an MBMessage Tree built using hte XMLNSC Parser into a string.
You did not PARSE it into a string. Parsing is, in fact, exactly opposite of what you did. |
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