topic Edit "File Json" metadata without re-creating in Talend Studio

Edit "File Json" metadata without re-creating

sthauv — Wed, 14 Jul 2021 13:42:07 GMT

I created a Json file object in Metadata -> File Json . I created it using the "Create from a file" option. On the last step, I configured the JSON tree using @class and @type attributes and set the loop node as mentionned in https://help.talend.com/r/Xr~HqMTCU7gC3dT5ZSikKQ/~0LUWbjtzD8PbSILdjp6Dg .

This works fine, however I noticed later that I made a mistake while configuring the JSON tree. If I go back to Metadata -> FileJson and double-click on my object, it brings back the wizard that creates the file. If I use next->next->next to go back to the JSON tree, it looks like it re-imported from the file and removed the @class and @types . I have to re-created them all.

I there a way to either :

Set the class and types directly in the json file before creating it in Talend.
Edit the @class and @type atrributes of the "File Json" object without having to re-create them all.

Re: Edit "File Json" metadata without re-creating

gjeremy1617088143 — Fri, 16 Jul 2021 13:20:23 GMT

Hi @sthauv, i saw this in the documentation :

Create a JSON tree from another JSON fileRight-click any schema item in the Linker Target area and select Import JSON Tree from the contextual menu to load another JSON file. Then, you need to create source-target mappings manually and define the output schema all again.

So yes it seems you have to redefine loop element, type and class each time you have to make change.

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Re: Edit "File Json" metadata without re-creating

sthauv — Fri, 16 Jul 2021 15:58:14 GMT

I saw that part too but that's not exactly what I am doing.

This talks about re-creating the json tree from a different file by right clicking and selecting "Import....". .

In my case, I am simply trying to open the existing configuration to correct a small mistake. I don't want to re-import, I just want to edit . When I try to open the JSON object to edit it, all the customization I did after the initial import lost.