UpdateVideo Command

This command provides ways to find one or more existing video and then lets an application add, change or remove properties. The local id allows an application to chain this command with following operations or associate with a previous search.

Parameters

  • [optional] _ref: for reference

Blocks

NOTE: At least one of _ref or class + constraints are required for searching.

If _ref is provided, it essentially refers to the search results of a previous FindVideo or AddVideo. Since the Update call just results in updating the property values inline within those entities, we keep the same _ref value. The call can result in an update to multiple entities depending on the search criteria. Unique is not assumed to be true in this case.

Property keys are case sensitive and are matched exactly when updating properties.

If search results are empty, this will cause an exception.

Examples

Add the video entity representing video_1. 

"AddVideo" : {
    "_ref": 1234,
    "properties" : {
        "Name" : "video_1",
        "fps" : 30
    }
}

Remove the fps property, assuming the "Name" property uniquely identifies a video. 

"UpdateVideo" : {
    "_ref": 1234,
    "constraints" : {
        "Name": [ "==", "video_1" ],
    },
    "remove_props" : [ "fps" ]
}