org.jboss.cache.commands.remote
Class ClusteredGetCommand

java.lang.Object
  extended by org.jboss.cache.commands.remote.ClusteredGetCommand
All Implemented Interfaces:
Cloneable, ReplicableCommand

public class ClusteredGetCommand
extends Object
implements ReplicableCommand

Issues a clustered get call, for use primarily by the ClusteredCacheLoader. This is not a VisitableCommand and hence not passed up the CommandInterceptor chain.

Since:
2.2.0
Author:
Mircea.Markus@jboss.com

Field Summary
static int METHOD_ID
           
 
Constructor Summary
ClusteredGetCommand()
           
ClusteredGetCommand(boolean searchBackupSubtrees, DataCommand dataCommand)
           
 
Method Summary
 boolean equals(Object o)
           
 int getCommandId()
          Used by marshallers to convert this command into an id for streaming.
 DataCommand getDataCommand()
           
 Object[] getParameters()
          Used by marshallers to stream this command across a network
 Boolean getSearchBackupSubtrees()
           
 int hashCode()
           
 void initialize(DataContainer dataContainer, InterceptorChain interceptorChain)
           
 Object perform(InvocationContext context)
          Invokes a DataCommand on a remote cache and returns results.
 void setParameters(int commandId, Object[] args)
          Used by the CommandsFactory to create a command from raw data read off a stream.
 String 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

ClusteredGetCommand

public ClusteredGetCommand(boolean searchBackupSubtrees,
                           DataCommand dataCommand)

ClusteredGetCommand

public ClusteredGetCommand()
Method Detail

initialize

public void initialize(DataContainer dataContainer,
                       InterceptorChain interceptorChain)

perform

public Object perform(InvocationContext context)
               throws Throwable
Invokes a DataCommand on a remote cache and returns results.

Specified by:
perform in interface ReplicableCommand
Parameters:
context - invocation context, ignored.
Returns:
a List containing 2 elements: a boolean, (true or false) and a value (Object) which is the result of invoking a remote get specified by getDataCommand(). If buddy replication is used one further element is added - an Fqn of the backup subtree in which this node may be found.
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.

Specified by:
getCommandId in interface ReplicableCommand
Returns:
the method id of this command. This is compatible with pre-2.2.0 MethodCall ids.

getSearchBackupSubtrees

public Boolean getSearchBackupSubtrees()

getDataCommand

public DataCommand getDataCommand()

getParameters

public Object[] getParameters()
Description copied from interface: ReplicableCommand
Used by marshallers to stream this command across a network

Specified by:
getParameters in interface ReplicableCommand
Returns:
an object array of arguments, compatible with pre-2.2.0 MethodCall args.

setParameters

public void setParameters(int commandId,
                          Object[] args)
Description copied from interface: ReplicableCommand
Used by the CommandsFactory to create a command from raw data read off a stream.

Specified by:
setParameters in interface ReplicableCommand
Parameters:
commandId - command id to set. This is usually unused but *could* be used in the event of a command having multiple IDs, such as PutKeyValueCommand.
args - object array of args

equals

public boolean equals(Object o)
Overrides:
equals in class Object

hashCode

public int hashCode()
Overrides:
hashCode in class Object

toString

public String toString()
Overrides:
toString in class Object


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