Class DatumStreamMetadataRegistry

Constructor.

Add metadata to the registry.

Get the index of the metadata with a specific stream ID.

Get the metadata at a specific index, based on insertion order.

Get the first available metadata for a given object and source ID combination.

Get the metadta for a given stream ID.

Get a set of all available stream IDs.

Get a list of all available stream IDs in insertion order.

Get this object as a standard JSON encoded string value.

The returned JSON is an array of the toJsonEncoding() result of all metadata in the registry. An example result looks like this:

[
    {
      "streamId": "7714f762-2361-4ec2-98ab-7e96807b32a6",
      "zone": "Pacific/Auckland",
      "kind": "n",
      "objectId": 123,
      "sourceId": "/power/1",
      "i": ["watts", "current",  "voltage", "frequency"],
      "a": ["wattHours"]
    },
    {
      "streamId": "5514f762-2361-4ec2-98ab-7e96807b3255",
      "zone": "America/New_York",
      "kind": "n",
      "objectId": 456,
      "sourceId": "/irradiance/2",
      "i": ["irradiance", "temperature"],
      "a": ["irradianceHours"]
    }
]
Copy

Parse a JSON string into a DatumStreamMetadataRegistry instance.

The JSON must be encoded the same way toJsonEncoding() does.

Create a registry instance from an array parsed from a JSON string of datum stream metadata objects.

The array must be structured in the same way toJsonEncoding() does.