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| HEX Data type in WTX |
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| Lily |
 Posted: Thu Mar 13, 2014 5:58 pm Post subject: HEX Data type in WTX |
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Novice
Joined: 15 Oct 2013
Posts: 13
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Hi,
Can somebody tell me what should be the properties for an Hexa decimal number in the type tree.
I am getting the value as 82200000000000000400000000000000. which is 16 bytes of HEX data ( 82 20 00 00....). I tried all teh combinations of item subtype,interpretation,presentation. but its reading first 16 numbers if I give the length as 16 bytes.
I am required to read it and test on each bit to check next fileds availability.(ISO8583 message bitmap).
DO I need to read it as character with 32 byte length and then try to convert it to hex or is there a way that we can define the field as hex so tht I can directly read it using 16 bytes length.
Quick response would be much appreciated.
Thanks!!! |
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| Gralgrathor |
| Posted: Thu Mar 13, 2014 10:16 pm Post subject: |
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Master
Joined: 23 Jul 2009
Posts: 297
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I should think that hex is a *representation* of a value, not a type. So you need a scalar type that's 16 bytes long, no?
Of course, if you have the character cast from the blob input message, then you already have the hex representation of the original bitstream.
Question is now: why are you doing this? Might parsing the bitstream not be done by parsing the message through a message set? You already have the exact specifications for this type of message, after all. And a quick google search gives you such articles as this one.
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A measure of wheat for a penny, and three measures of barley for a penny; and see thou hurt not the oil and the wine. |
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| kimbert |
| Posted: Fri Mar 14, 2014 1:51 am Post subject: |
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Jedi Council
Joined: 29 Jul 2003
Posts: 5542
Location: Southampton
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Hi Lily,
ISO8583 is a very complex data format. You should not be trying to create a WTX map for ISO8583 unless you are already an expert with data formats. IBM supplies pre-built maps for WTX, and pre-built models for DFDL.
As I said on the other thread, if you are using WMB v8 then you should consider using WMB / DFDL to parse, map and write the ISO8583 data.
If you are using v7 then you should buy the appropriate industry pack from WTX.
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Before you criticize someone, walk a mile in their shoes. That way you're a mile away, and you have their shoes too. |
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| Lily |
| Posted: Fri Mar 14, 2014 6:04 am Post subject: |
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Novice
Joined: 15 Oct 2013
Posts: 13
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Hi,
I am new to this comapny and WTX, the team here is used to using WTX nodes for mapping and they never used message sets in previous projects.
I am inclined towards using WMB but not sure how to make them use it.
So, My first goal is to complete the map and then comapare the map and the dfdl message set.
I agree HEX is a represenattion of data.. but whatever the propertors I select for this field its reading each number as a byte. How do I read the 2 numbers(82 ,00,00..) into a byte.
I am done with all the other mapping settings except reading this one. |
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| kimbert |
| Posted: Fri Mar 14, 2014 8:06 am Post subject: |
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Jedi Council
Joined: 29 Jul 2003
Posts: 5542
Location: Southampton
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| Quote: |
| I am new to this comapny and WTX, the team here is used to using WTX nodes for mapping and they never used message sets in previous projects. |
Yes, I understand that you probably don't have a choice.
Please note, though, that I am not recommending that you use a message set for this. I'm recommending using the open-source DFDL model for ISO8583, along with the sample code ( for adjusting the bitmaps ) provided with the product.
| Quote: |
| I am done with all the other mapping settings except reading this one. |
You need the value of each of those 128 bits to control the parsing of each of the 128 data fields that follow. Have you put the required component rules into the WTX map?
_________________
Before you criticize someone, walk a mile in their shoes. That way you're a mile away, and you have their shoes too. |
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| Lily |
| Posted: Fri Mar 14, 2014 9:43 am Post subject: |
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Novice
Joined: 15 Oct 2013
Posts: 13
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Yes. I am using the teston() condition for all the fields. But as it is reading each number as a byte I am getting wrong output. ( instead of 1000 0010(82) it's 0011 1000( 8 as text).
If I can figure out how to read 2 numbers as a single byte, I can complete the map. |
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| Gralgrathor |
| Posted: Fri Mar 14, 2014 10:07 am Post subject: |
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Master
Joined: 23 Jul 2009
Posts: 297
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| Lily wrote: |
| they never used message sets in previous projects. |
That would seem to me to be the opposite of a best practice. I would advise to use messagesets wherever possible. This reduces your codebase, makes validation routine, allows easier maintenance and reduces the risk of mistakes.
_________________
A measure of wheat for a penny, and three measures of barley for a penny; and see thou hurt not the oil and the wine. |
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