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UpdateBlob

Updates existing blob objects that satisfy the specified constraints.

Parameters​

Details​

If the ref parameter is used, constraints will act as additional filters on the referenced result set.

If the ref parameter is specified, it must refer to the search result of a previous FindBlob.

For more complex searches for object to delete, a Find command must be used first within the transaction.

Examples​

Find the blobs with the "year_captured" property equal to 2007, and remove the "audio_codec" property:


    [{
        "UpdateBlob": {
            "constraints": {
                "year_captured": ["==", 2007]
            },
            "remove_props": ["audio_codec"]
        }
    }]

Successful response:


    [{
        "UpdateBlob": {
            "count": 2,
            "status": 0
        }
    }]

Find the blobs that are connected to an object of the class "Dataset", and update the "year" property:


    [{
        "FindEntity": {
            "_ref": 1,
            "with_class": "Dataset",
            "unique": true,
            "constraints": {
                "name": ["==", "Audio Dataset"]
            }
        }
    }, {
        "FindBlob": {
            "_ref": 2,
            "is_connected_to": {
                "ref": 1,
                "connection_class": "in_dataset"
            },
            "blobs": false
        }
    }, {
        "UpdateBlob": {
            "ref": 2,
            "properties": {
                "year": 2005
            }
        }
    }]

Successful response:


    [{
        "FindEntity": {
            "returned": 0,
            "status": 0
        }
    }, {
        "FindBlob": {
            "returned": 0,
            "status": 0
        }
    }, {
        "UpdateBlob": {
            "count": 1,
            "status": 0
        }
    }]