org.jboss.cache.commands.read

Class GetNodeCommand

java.lang.Object

org.jboss.cache.commands.read.AbstractDataCommand

org.jboss.cache.commands.read.GetNodeCommand

All Implemented Interfaces:

DataCommand, ReplicableCommand, VisitableCommand

public class GetNodeCommand
extends AbstractDataCommand

Implements functionality defined by Cache.getNode(org.jboss.cache.Fqn)

This is the equivalent of the old MethodCallDefinitions.getNodeMethodLocal method call from 2.1.x.

Since:

2.2.0

Author:

Mircea.Markus@jboss.com

Field Summary

Fields

Modifier and Type	Field and Description
static int	METHOD_ID

Fields inherited from class org.jboss.cache.commands.read.AbstractDataCommand

dataContainer, fqn

Constructor Summary

Constructors

Constructor and Description
GetNodeCommand()
GetNodeCommand(Fqn fqn)

Method Summary

Methods

Modifier and Type	Method and Description
Object	acceptVisitor(InvocationContext ctx, Visitor visitor) Accept a visitor, and return the result of accepting this visitor.
int	getCommandId() Used by marshallers to convert this command into an id for streaming.
Object	perform(InvocationContext ctx) Retrieves a Node referenced by the specified Fqn.

Methods inherited from class org.jboss.cache.commands.read.AbstractDataCommand

equals, getFqn, getParameters, hashCode, initialize, setParameters, toString

Methods inherited from class java.lang.Object

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

Field Detail

METHOD_ID

public static final int METHOD_ID

See Also:

Constant Field Values

Constructor Detail

GetNodeCommand

public GetNodeCommand(Fqn fqn)

GetNodeCommand

public GetNodeCommand()

Method Detail

perform

public Object perform(InvocationContext ctx)

Retrieves a Node referenced by the specified Fqn.

Parameters:

ctx - invocation context

Returns:

a Node, or null if the Fqn refers to a node that does not exist.

acceptVisitor

public Object acceptVisitor(InvocationContext ctx,
                   Visitor visitor)
                     throws Throwable

Description copied from interface: VisitableCommand

Accept a visitor, and return the result of accepting this visitor.

Parameters:

ctx - invocation context

visitor - visitor to accept

Returns:

arbitrary return value

Throws:

Throwable - in the event of problems

getCommandId

public int getCommandId()

Description copied from interface: ReplicableCommand

Used by marshallers to convert this command into an id for streaming.

Returns:

the method id of this command. This is compatible with pre-2.2.0 MethodCall ids.