io.axoniq.axonserver.connector.query

Interface SubscriptionQueryResult

public interface SubscriptionQueryResult

Interface describing the results of a subscription query. This type of query consists of an initial response, representing the state of a projection at the start of the query, and a stream of updates which represent the updates to the model since the query started.

Method Summary

Modifier and Type	Method and Description
CompletableFuture<QueryResponse>	initialResult() Returns a CompletableFuture that completes when the initial result of the query is available.
ResultStream<QueryUpdate>	updates() Returns the stream of updates to the queried projection.

Method Detail

initialResult

CompletableFuture<QueryResponse> initialResult()

Returns a CompletableFuture that completes when the initial result of the query is available. If an error occurred while querying, the CompletableFuture completes exceptionally.

Invoking this method will send a request for the initial result, if that hasn't been requested before. Subsequent invocations of this method will return the same CompletableFuture instance.

Returns:

a CompletableFuture that completes with the initial result of the subscription query

updates

ResultStream<QueryUpdate> updates()

Returns the stream of updates to the queried projection. The stream can be read in a blocking and non-blocking fashion, as desired by downstream processes.

Multiple invocation of this method will return the same stream instance.

Returns:

a stream of updates