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| − | When an observation type instance is posted to the endpoint /amtech/things/events:
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| − | *the observation gets validated versus the semantic of the '@type'
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| − | * #{placeholders} get enriched
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| − | *location and proximity enrichment happens
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| − | If an error occurs an observation type observationoutputmsg get send to the sensor network topic /sensor_network/observation_errors/observationTypeName in the following example is an observation type observationresourcecrud sent with a wrong topic value "message": "Failed registering topic for observation"
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| − | <syntaxhighlight lang="jsonld">
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| − | {
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| − | "topic": "/sensor_network/observation_errors/observationresourcecrud",
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| − | "_tenant": "m2mcreator",
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| − | "@type": "/amtech/linkeddata/types/composite/observation/observationoutputmsg",
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| − | "resource": "{\"topic\":\" /helloWorld/asynch\",\"_tenant\":\"m2mcreator\",
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| − | \"targetthings\":\"[]\",
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| − | \"@type\":\"/amtech/linkeddata/types/composite/observation/observationresourcecrud\",
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| − | \"propId\":\"hwgreetingLabel\",\"resourceuri\":\"/amtech/things/entities/HelloWorld/helloWorld\",
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| − | \"resourcetype\":\"/amtech/linkeddata/types/composite/entity/HelloWorld\",
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| − | \"newvalue\":\"heyWithError\",\"guesttenants\":[],
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| − | \"oldvalue\":\"hey\",\"crudoperation\":\"PUT\",
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| − | \"producer\":\"helloWorld\",\"detectiontime\":\"2016-04-22T18:33:11.481Z\",
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| − | \"@id\":\"/amtech/things/observations/helloWorld5226521372857087\",
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| − | \"occurrencetime\":\"2016-04-22T18:33:10.948Z\",\"_user\":\"m2mcreator@amtech.mx\"}",
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| − | "_name": "idbf740e7d83064ba492c9ca33d20617a0",
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| − | "resourcetype": "/amtech/linkeddata/types/composite/observation/observationresourcecrud",
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| − | "message": "Failed registering topic for observation",
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| − | "guesttenants": [],
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| − | "producer": "enrichment-topology",
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| − | "detectiontime": "Fri Apr 22 18:33:11 UTC 2016",
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| − | "@id": "/amtech/things/observations/6de7bf42-2ea6-4140-a8f4-a427bc119701",
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| − | "success": false,
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| − | "messagedetail":
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| − | "Error registering topic '/amtech/things/eventsources/ ': Resource /amtech/things/eventsources/ is not valid for its type definition. Property @idcannot contain blank spaces. ",
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| − | "_user": "m2mcreator@amtech.mx"
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| − | }
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| − | </syntaxhighlight>
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