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From: Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: how to detect two or more roots in xml
Date: Thu, 25 Feb 2021 15:29:21 +0100
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On 2021-02-23 18:22, mike wrote:
> Hi,
> 
> I will have files like:
> 
> <get>
>     <filter>
>         <configure xmlns="urn:nokia.com:sros:ns:yang:sr:conf">
>             <system>
>                 <security>
>                     <user-params>
>                         <local-user>
>                             <user>
>                                 <user-name />  <!-- selection node in context A -->
>                             </user>
>                         </local-user>
>                     </user-params>
>                 </security>
>             </system>
>         </configure>
>         <state xmlns="urn:nokia.com:sros:ns:yang:sr:state">
>             <system>
>                 <security>
>                     <user-params>
>                         <local-user>
>                             <user>
>                                 <attempted-logins />  <!-- selection node in context B -->
>                             </user>
>                         </local-user>
>                     </user-params>
>                 </security>
>             </system>
>         </state>
>     </filter>
> </get>
> 
> I will need to parse to xml:
> 
>  <configure xmlns="urn:nokia.com:sros:ns:yang:sr:conf">
>             <system>
>                 <security>
>                     <user-params>
>                         <local-user>
>                             <user>
>                                 <user-name />  <!-- selection node in context A -->
>                             </user>
>                         </local-user>
>                     </user-params>
>                 </security>
>             </system>
>         </configure>
>         <state xmlns="urn:nokia.com:sros:ns:yang:sr:state">
>             <system>
>                 <security>
>                     <user-params>
>                         <local-user>
>                             <user>
>                                 <attempted-logins />  <!-- selection node in context B -->
>                             </user>
>                         </local-user>
>                     </user-params>
>                 </security>
>             </system>
>         </state>
> 
> However it is not valid xml since it is two roots. How can I detect that I have two roots. Currently I am only seeing this when parse fails ( see below) And message is too general to know there are multiple ( in this case 2) roots.
> If I can detect multi roots I can split string and parse each and add them together later ( I think).

This looks like a self-inflicted problem. Don't do string manipulations
with XML.

The first document you posted (starting with a "get" element) is
correct. Parse _that_ document. Then extract the children you need --
for instance using XPath. Or build it as a Document and find the
children you need.

(Apologies, early reply was sent directly to OP instead of newsgroup)

-- 
DF.