io.kurrent.dbclient

Class StreamState

java.lang.Object

io.kurrent.dbclient.StreamState

Direct Known Subclasses:

StreamState.AnyStreamState, StreamState.NoStreamState, StreamState.StreamExistsState, StreamState.StreamRevisionStreamState

public abstract class StreamState
extends java.lang.Object

Constants used for expected revision control.

The KurrentDB server will assure idempotency for all requests using any value in ExpectedRevision except ANY. When using ANY, the EventStoreDB server will do its best to assure idempotency but will not guarantee it. Any other ExpectedRevision instances are meant for optimistic concurrency checks.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	StreamState.AnyStreamState
static class	StreamState.NoStreamState
static class	StreamState.StreamExistsState
static class	StreamState.StreamRevisionStreamState

Method Summary

Modifier and Type	Method and Description
static StreamState	any() This writes should not conflict with anything and should always succeed.
boolean	equals(java.lang.Object o)
static StreamState	fromRawLong(long revision)
int	hashCode()
static StreamState	noStream() The stream being written to should not yet exist.
static StreamState	streamExists() The stream should exist.
static StreamState	streamRevision(long revision) States that the last event written to the stream should have an event revision matching your expected value.
long	toRawLong()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Method Detail

any

public static StreamState any()

This writes should not conflict with anything and should always succeed.

noStream

public static StreamState noStream()

The stream being written to should not yet exist. If it does exist, treats that as a concurrency problem.

streamExists

public static StreamState streamExists()

The stream should exist. If it or a metadata stream does not exist, treats that as a concurrency problem.

streamRevision

public static StreamState streamRevision(long revision)

States that the last event written to the stream should have an event revision matching your expected value.

fromRawLong

public static StreamState fromRawLong(long revision)

toRawLong

public long toRawLong()

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object