EventFilter

Used for server-side event stream filtering. There are two kinds of filters:

• EventFilter.ByStreamId when you wish to filter by stream identifier.
• EventFilter.ByEventType when you wish to filter by event type.

In combination with EventFilter.Kind you can choose between two types of filter expressions:

• EventFilter.PrefixFilter when you wish to filter for prefixes. An example of this is PrefixFilter("user_stream") for streams starting with the string value "user_stream" like "user_stream-a" and "user_stream-b".

• EventFilter.RegexFilter when you wish to filter with a regular expression. An example of this is RegexFilter("^[^$].*") when you for do not wish to retrieve events starting with $.