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| manipulate JSON message in Java compute node |
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| Author |
Message
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| wmqstankela |
 Posted: Wed Mar 14, 2018 4:43 am Post subject: manipulate JSON message in Java compute node |
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Voyager
Joined: 29 Feb 2016
Posts: 94
|
Hi all,
I need some help. I have REST service and my input is JSON with array of attributes:
| Code: |
(0x01000000:Object):JSON = ( ['json' : 0x23f317914f0]
(0x01000000:Object):Data = (
(0x01001000:Array ):attributes = (
(0x01000000:Object):Item = (
(0x01000000:Object):attribute = (
(0x03000000:NameValue):name = 'name' (CHARACTER)
(0x03000000:NameValue):value = 'John' (CHARACTER)
)
)
(0x01000000:Object):Item = (
(0x01000000:Object):attribute = (
(0x03000000:NameValue):name = 'lastname' (CHARACTER)
(0x03000000:NameValue):value = 'Doe' (CHARACTER)
)
)
(0x01000000:Object):Item = (
(0x01000000:Object):attribute = (
(0x03000000:NameValue):name = 'mail' (CHARACTER)
(0x03000000:NameValue):value = 'john.doe@example.com' (CHARACTER)
)
)
)
)
|
Number of attributes is dynamic parameter, and I don't know how many attributes client will send to service. How to iterate through input JSON message in Java compute node and populate attributes in list of attribute?
Thanks in advance! |
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| timber |
| Posted: Wed Mar 14, 2018 12:33 pm Post subject: |
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Grand Master
Joined: 25 Aug 2015
Posts: 1292
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| Don't want to sound unhelpful but...what have you tried? There are quite a few answers, and it's hard to know where to start. And the 'correct' answer may depend on requirements that you haven't mentioned yet. |
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| wmqstankela |
| Posted: Thu Mar 15, 2018 5:17 am Post subject: |
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Voyager
Joined: 29 Feb 2016
Posts: 94
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| I've done it, thanks timber anyway. |
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| Vitor |
| Posted: Thu Mar 15, 2018 5:43 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
|
| wmqstankela wrote: |
| I've done it, thanks timber anyway. |
Care to post your solution for the benefit of future readers?
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| wmqstankela |
| Posted: Thu Mar 15, 2018 6:10 am Post subject: |
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Voyager
Joined: 29 Feb 2016
Posts: 94
|
I've put JSON message in MbElement and then iterate through that element using while loop and getNextSibling() method, until I reached getLastChild element.
First need to manipulate with first attribute, and then iterate through the rest of them. Something like that:
| Code: |
List<Attribute> attributes = new ArrayList<Attribute>();
MbElement paramAttributes = inJsonRoot.getFirstElementByPath("/JSON/Data/attributes");
MbElement firstItem = paramAttributes.getFirstChild();
MbElement lastItem = paramAttributes.getLastChild();
boolean isLast= false;
while !(isLast){
firstItem = firstItem.getNextSibling();
if (firstItem.is(lastItem)){ isLast= true; }
a = new Attribute(firstItem.getFirstChild().getFirstChild().getValueAsString(), firstItem.getFirstChild().getLastChild().getValueAsString());
attributes.add(a);
}
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