ColumnFamilyMapping class

Configuration for writing a Pub/Sub message to a Bigtable row with a user-defined key and writing to column families.

If this field is set: - The subscription messages must be formatted as JSON.

• The row key mapping is configured in the key_definition section. - The top-level fields will be written either: - By default, they will be written to the data column family with the field name as the column qualifier. - But if the field name matches an existing column family (except for the default data column), then that field will be written to that column family, either as a scalar or its next level nested fields if it's a JSON object. - The cell timestamp will be the message publish timestamp. If the field is not set, the default behavior is to write: - row key: subscription name, message ID hash, and message ID delimited by #. - columns: message bytes written to a single column family data with an empty-string column qualifier. - cell timestamp: the message publish timestamp.

Constructors

ColumnFamilyMapping({DelimitedKey? delimitedKey, RowKeySchema? rowKeySchema})

ColumnFamilyMapping.fromJson(Map json_)

Properties

delimitedKey ↔ DelimitedKey?

If set, the row key is constructed from the given key fields and delimiter.

getter/setter pair

hashCode → int

The hash code for this object.

no setter, inherited

rowKeySchema ↔ AvroFormat?

If set, the row key is constructed from the field names of the table's structured row key ({$universe.dns_names.final_documentation_domain}/bigtable/docs/manage-row-key-schemas).

getter/setter pair

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson() → Map<String, dynamic>

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited