com.hazelcast.cp.internal.datastructures.semaphore

Class AcquireInvocationKey

java.lang.Object

com.hazelcast.cp.internal.datastructures.spi.blocking.WaitKey

com.hazelcast.cp.internal.datastructures.semaphore.AcquireInvocationKey

All Implemented Interfaces:

DataSerializable, IdentifiedDataSerializable

public class AcquireInvocationKey
extends WaitKey
implements IdentifiedDataSerializable

Represents acquire() invocation of a semaphore endpoint. A SemaphoreInvocationKey either holds some permits or resides in the wait queue. Combination of a session id and a thread id a single-threaded unique entity. When it sends a request X, it can either retry this request X, or send a new request Y. After it sends request Y, it will not retry request X anymore.

Field Summary

Fields inherited from class com.hazelcast.cp.internal.datastructures.spi.blocking.WaitKey

callerAddress, callId, commitIndex, invocationUid

Constructor Summary

Constructors

Constructor and Description
AcquireInvocationKey(long commitIndex, UUID invocationUid, Address callerAddress, long callId, SemaphoreEndpoint endpoint, int permits)

Method Summary

Modifier and Type	Method and Description
SemaphoreEndpoint	endpoint()
boolean	equals(Object o)
int	getFactoryId() Returns DataSerializableFactory factory ID for this class.
int	getId() Returns type identifier for this class.
int	hashCode()
int	permits()
void	readData(ObjectDataInput in) Reads fields from the input stream
long	sessionId() Returns id of the session to which the corresponding operation is attached.
String	toString()
void	writeData(ObjectDataOutput out) Writes object fields to output stream

Methods inherited from class com.hazelcast.cp.internal.datastructures.spi.blocking.WaitKey

callerAddress, callId, commitIndex, invocationUid

Methods inherited from class java.lang.Object

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

Constructor Detail

AcquireInvocationKey

public AcquireInvocationKey(long commitIndex,
                            UUID invocationUid,
                            Address callerAddress,
                            long callId,
                            SemaphoreEndpoint endpoint,
                            int permits)

Method Detail

sessionId

public long sessionId()

Description copied from class: WaitKey

Returns id of the session to which the corresponding operation is attached. Returns AbstractProxySessionManager.NO_SESSION_ID if no session is attached.

Specified by:

sessionId in class WaitKey

endpoint

public SemaphoreEndpoint endpoint()

permits

public int permits()

getFactoryId

public int getFactoryId()

Description copied from interface: IdentifiedDataSerializable

Returns DataSerializableFactory factory ID for this class.

Specified by:

getFactoryId in interface IdentifiedDataSerializable

Returns:

factory ID

getId

public int getId()

Description copied from interface: IdentifiedDataSerializable

Returns type identifier for this class. It should be unique per DataSerializableFactory.

Specified by:

getId in interface IdentifiedDataSerializable

Returns:

type ID

writeData

public void writeData(ObjectDataOutput out)
               throws IOException

Description copied from interface: DataSerializable

Writes object fields to output stream

Specified by:

writeData in interface DataSerializable

Overrides:

writeData in class WaitKey

Parameters:

out - output

Throws:

IOException - if an I/O error occurs. In particular, an IOException may be thrown if the output stream has been closed.

readData

public void readData(ObjectDataInput in)
              throws IOException

Description copied from interface: DataSerializable

Reads fields from the input stream

Specified by:

readData in interface DataSerializable

Overrides:

readData in class WaitKey

Parameters:

in - input

Throws:

IOException - if an I/O error occurs. In particular, an IOException may be thrown if the input stream has been closed.

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