Package org.voltdb.client

Class UpdateClasses

java.lang.Object

org.voltdb.client.UpdateClasses

public class UpdateClasses
extends Object

Utility class, providing methods to load updated classes into a VoltDB database.

Each such method is a convenience method that is equivalent to reading a jarfile, containing classes to be added/updated, into a byte array, then using the client API to execute a call to the @UpdateClasses system procedure. Classes can be removed from the database by giving their names in a separate argument.

Constructor Summary

Constructors

Constructor	Description
UpdateClasses()

Method Summary

Modifier and Type	Method	Description
static ClientResponse	update(Client client, File jarPath, String classesToDelete)	Synchronously updates class definitions.
static boolean	update(Client client, ProcedureCallback callback, File jarPath, String classesToDelete)	Asynchronously updates class definitions.
static CompletableFuture<ClientResponse>	updateAsync(Client2 client, File jarPath, String classesToDelete)	Asynchronously updates class definitions via a "version 2" client.
static ClientResponse	updateSync(Client2 client, File jarPath, String classesToDelete)	Synchronously updates class definitions via a "version 2" client.

Methods inherited from class java.lang.Object

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

Constructor Details

UpdateClasses

public UpdateClasses()

Method Details

update

public static ClientResponse update(Client client,
 File jarPath,
 String classesToDelete)
                             throws IOException,
ProcCallException

Synchronously updates class definitions. Blocks until a result is available. A ProcCallException is thrown if the response is anything other than success.

Parameters:

client - A connected Client.

jarPath - Path to the jar file containing new/updated classes.

classesToDelete - comma-separated list of classes to delete.

Returns:

ClientResponse instance of procedure call result.

Throws:

IOException - If the file cannot be serialized or if there is a Java network error.

ProcCallException - on any VoltDB-specific failure.

update

public static boolean update(Client client,
 ProcedureCallback callback,
 File jarPath,
 String classesToDelete)
                      throws IOException

Asynchronously updates class definitions. Does not guarantee that the invocation was actually queued: check the return value to determine if queuing actually took place.

Parameters:

client - A connected Client.

callback - The ProcedureCallback that will be invoked with the result.

jarPath - Path to the jar file containing new/updated classes.

classesToDelete - comma-separated list of classes to delete.

Returns:

true if the procedure was queued and false otherwise.

Throws:

IOException - If the file cannot be serialized or if there is a Java network error.

updateSync

public static ClientResponse updateSync(Client2 client,
 File jarPath,
 String classesToDelete)
                                 throws IOException,
ProcCallException

Synchronously updates class definitions via a "version 2" client. Blocks until a result is available. A ProcCallException is thrown if the response is anything other than success.

Parameters:

client - A connected Client2.

jarPath - Path to the jar file containing new/updated classes.

classesToDelete - comma-separated list of classes to delete.

Returns:

ClientResponse instance of procedure call result.

Throws:

IOException - If the file cannot be serialized or if there is a Java network error.

ProcCallException - on any VoltDB-specific failure.

updateAsync

public static CompletableFuture<ClientResponse> updateAsync(Client2 client,
 File jarPath,
 String classesToDelete)
                                                     throws IOException

Asynchronously updates class definitions via a "version 2" client. Completion is communicated via a returned CompletableFuture.

Parameters:

client - A connected Client2.

jarPath - Path to the jar file containing new/updated classes.

classesToDelete - comma-separated list of classes to delete.

Returns:

a CompletableFuture that completes when the procedure call completes.

Throws:

IOException - If the file cannot be serialized.