rice.p2p.aggregation.messaging
Class NonAggregate

java.lang.Object
  rice.p2p.aggregation.messaging.NonAggregate

All Implemented Interfaces:

java.io.Serializable, PastContent, RawPastContent

public class NonAggregate
extends java.lang.Object
implements RawPastContent

Just wraps a header in Past to know that it is something other than an Aggregate

Author:

Jeff Hoye

See Also:

Serialized Form

Field Summary

RawPastContent	content
static short	TYPE

Constructor Summary

NonAggregate(InputBuffer buf, Endpoint endpoint, RawPastContent subContent, PastContentDeserializer pcd)

NonAggregate(PastContent content)

NonAggregate(RawPastContent subContent)

Method Summary

PastContent	checkInsert(Id id, PastContent existingContent) Checks if a insert operation should be allowed.
PastContentHandle	getHandle(Past local) Produces a handle for this content object.
Id	getId() Returns the Id under which this object is stored in Past.
short	getType() Raw Serialization
boolean	isMutable() States if this content object is mutable.
void	serialize(OutputBuffer buf)

Methods inherited from class java.lang.Object

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

Field Detail

TYPE

public static final short TYPE

See Also:

Constant Field Values

content

public RawPastContent content

Constructor Detail

NonAggregate

public NonAggregate(PastContent content)

NonAggregate

public NonAggregate(RawPastContent subContent)

NonAggregate

public NonAggregate(InputBuffer buf,
                    Endpoint endpoint,
                    RawPastContent subContent,
                    PastContentDeserializer pcd)
             throws java.io.IOException

Throws:

java.io.IOException

Method Detail

checkInsert

public PastContent checkInsert(Id id,
                               PastContent existingContent)
                        throws PastException

Description copied from interface: PastContent

Checks if a insert operation should be allowed. Invoked when a Past node receives an insert request and it is a replica root for the id; invoked on the object to be inserted. This method determines the effect of an insert operation on an object that already exists: it computes the new value of the stored object, as a function of the new and the existing object.

Specified by:

checkInsert in interface PastContent

Parameters:

id - the key identifying the object

Returns:

null, if the operation is not allowed; else, the new object to be stored on the local node.

Throws:

PastException

getHandle

public PastContentHandle getHandle(Past local)

Description copied from interface: PastContent

Produces a handle for this content object. The handle is retrieved and returned to the client as a result of the Past.lookupHandles() method.

Specified by:

getHandle in interface PastContent

Returns:

the handle

getId

public Id getId()

Description copied from interface: PastContent

Returns the Id under which this object is stored in Past.

Specified by:

getId in interface PastContent

Returns:

the id

isMutable

public boolean isMutable()

Description copied from interface: PastContent

States if this content object is mutable. Mutable objects are not subject to dynamic caching in Past.

Specified by:

isMutable in interface PastContent

Returns:

true if this object is mutable, else false

getType

public short getType()

Raw Serialization

Specified by:

getType in interface RawPastContent

serialize

public void serialize(OutputBuffer buf)
               throws java.io.IOException

Specified by:

serialize in interface RawPastContent

Throws:

java.io.IOException