com.marketfactory.mfapi.enterprise.api

Interface NextExpectedMessageSequenceNumberStore

public interface NextExpectedMessageSequenceNumberStore

Implemented by the client

Provides and checks the incoming message sequence numbers

Method Summary

Modifier and Type	Method and Description
void	compareAndIncrement(long expected) Checks that the next expected value is what is expected and then increments the next expected by 1.
void	compareAndSet(long expected, long newValue) Checks that the next expected value is what is expected.
long	getNextExpected() Get the current next expected message sequence number.
void	set(long newValue)

Method Detail

set

void set(long newValue)

compareAndSet

void compareAndSet(long expected,
                   long newValue)
            throws java.lang.IllegalStateException

Checks that the next expected value is what is expected.

Parameters:

expected - expected current value

newValue - new value to set

Throws:

java.lang.IllegalStateException - if the current value does not match expected

compareAndIncrement

void compareAndIncrement(long expected)
                  throws java.lang.IllegalStateException

Checks that the next expected value is what is expected and then increments the next expected by 1.

Parameters:

expected - expected current value; will error if it's not the same

Throws:

java.lang.IllegalStateException - if the current value does not match expected

getNextExpected

long getNextExpected()

Get the current next expected message sequence number.

Returns:

the current next expected message sequence number