Binary Topic.
This is a stateful topic that handles data in Binary format.
Topic that stores and publishes IEEE 754 double-precision floating point numbers (i.e native JavaScript Numbers). Based on the double data type.
Supports null Double values.
The topic does not support delta-streams - only complete values are transmitted.
Topic that stores and publishes 64-bit integer values. Based on the int64 data type. Values are of the type Int64.
Supports null int64 values.
Does not support delta-streams - only complete values are transmitted.
JSON (JavaScript Object Notation) Topic.
This is a stateful topic that handles data in JSON representation.
Topic that stores and publishes data in the form of records and fields. Based on the RecordV2 data type.
Supports delta-streams.
Topic that stores and publishes String values. Based on the string data type.
Supports null String values.
Supports delta-streams.
Time Series Topic.
A time series is a sequence of events. Each event contains a value and has server-assigned metadata comprised of a sequence number, timestamp, and author.
A time series topic allows sessions to access a time series that is
maintained by the server. A time series topic has an associated
event data type, such as Binary, String,
or JSON, that determines the type of value associated with each
event.
The TIME_SERIES_SUBSCRIPTION_RANGE property configures the range of historic events retained by a time series topic. If the property is not specified, a time series topic will retain the ten most recent events.
The TIME_SERIES_SUBSCRIPTION_RANGE property configures a time series topic to send a range of historic events from the end of the time series to new subscribers. This is a convenient way to synchronize new subscribers without requiring the use of a range query.
By default, new subscribers will be sent the latest event if delta streams are enabled and no events if delta streams are disabled. See the description of Subscription range in the Session.timeseries time series feature} documentation.
The TIME_SERIES_EVENT_VALUE_TYPE property must be provided when creating a time series topic.
A topic type that is unsupported by the session.
Enum containing possible Topic Types.
Example:
// Get a topic type for adding topics var topicType = diffusion.topics.TopicType.JSON; session.topics.add("foo", topicType);