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annotate doc/libervia-cli/pubsub_node_schema.rst @ 3796:24c1c06c865b

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core (memory/mapping): add `origin_id` column to History + constraints update: - `origin_id` is added as a column instead of being just in extra, as it an important data to filter on. - Add some constraints. - Add `serialise` method to Message and Subject.
author Goffi <goffi@goffi.org>
date Fri, 17 Jun 2022 14:15:23 +0200
parents 267e4987b58b
children
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1 .. _libervia-cli_pubsub_node_schema:
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3 =========================================
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4 pubsub/node/schema: nodes schema handling
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5 =========================================
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6
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7 ``node schema`` is an experimental feature to associate a data form with a PubSub node, and
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8 reject items not following this form. This feature is currently only available with Libervia
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9 PubSub.
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11 Those commands can only be used by an owner of the node.
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13 set
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14 ===
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15
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16 Set the schema of a node. The raw schema is written directly as positional argument.
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18 example
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19 -------
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20
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21 Set the schema for tickets node using the file ``tickets_schema.xml`` from ``$HOME``
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22 directory. Shell substition is used here to put the content of the file in the positional
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23 argument::
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24
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25 $ li pubsub node schema set -n org.salut-a-toi.tickets:0 -s pubsub.example.org "$(<~/test_schema.xml)"
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28 edit
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29 ====
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30
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31 Edit the schema of a node using your local editor (the one set in ``$EDITOR``).
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32
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33 If you don't change anything or publish an empty schema, the edition will be cancelled.
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34
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35 :ref:`draft_common` commands can be used.
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37 example
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38 -------
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40 Edit the tickets node schema::
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41
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42 $ li pubsub node schema edit -n org.salut-a-toi.tickets:0 -s pubsub.example.org
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45 example
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46 -------
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48 get
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49 ===
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51 Retrieve schema of a node.
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53 example
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54 -------
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56 Get schema of tickets and save it to a file named ``tickets_schema.xml`` in ``$HOME``
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57 directory::
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58
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59 $ li pubsub node schema get -n org.salut-a-toi.tickets:0 -s pubsub.example.org > ~/tickets_schema.xml