Thanks Justin. Makes perfect sense. I missed the significance of that in the incompatibilities listing, but it’s right there<https://docs.marklogic.com/guide/relnotes/chap4#id_94947>.
Paul Williams | Technical Consultant M: +1 402 203 2232 | Sk: paul.wms [email protected]<mailto:[email protected]> From: [email protected] [mailto:[email protected]] On Behalf Of Justin Makeig Sent: Monday, March 23, 2015 4:53 PM To: MarkLogic Developer Discussion Subject: Re: [MarkLogic Dev General] ML8 Json Paul, You're constructing XML and trying to insert an object-node child. That's not allowed in MarkLogic 8. Previously xdmp:to-json returned a string, as there was no object-node type. In MarkLogic 8 we introduced new node types to represent JSON: object-node, array-node, null-node, boolean-node, and number-node. (JSON strings share text node types with their XML brethren.) In order to get the serialized string you should use xdmp:quote, as you suggest. Justin -- Justin Makeig Director, Product Management MarkLogic [email protected]<mailto:[email protected]> On Mar 23, 2015, at 2:45 PM, Paul Williams <[email protected]<mailto:[email protected]>> wrote: In upgrading from ML6 to ML8 we have an issue in our application code where we are generating JSON for a client-side script. I know there has been a huge change in JSON support, but can anyone tell me exactly what is going on here? Sample code: xquery version "1.0-ml"; let $obj := <json:object xmlns:json="http://marklogic.com/xdmp/json";> <json:entry><json:key>name</json:key><json:value xsi:type="xs:string">world</json:value></json:entry> <json:entry><json:key>label</json:key><json:value xsi:type="xs:string">hello</json:value></json:entry> </json:object> let $doc := xdmp:to-json(json:object($obj)) return <script type="text/javascript">var obj = {$doc}</script> If you execute that in ML6, as expected, you get… <script type="text/javascript">var obj = {"name":"world", "label":"hello"}</script> But in ML8, you get this error pointing at the highlighted reference XDMP-CHILDNODEKIND: $doc -- element nodes cannot have object node children I’m not sure exactly what is the “element node” this message refers to. I know that I can quote the reference (xdmp:quote($doc)) and make it work, but I’m trying to understand what specifically is different between ML6 & ML8 that is causing this problem so I can be sure of my workaround. Any comments? TIA Paul Williams | Technical Consultant M: +1 402 203 2232 | Sk: paul.wms [email protected]<mailto:[email protected]> _______________________________________________ General mailing list [email protected]<mailto:[email protected]> http://developer.marklogic.com/mailman/listinfo/general
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