io.debezium.crdt

Class StateBasedPNDeltaCounter

java.lang.Object

io.debezium.crdt.StateBasedPNCounter

io.debezium.crdt.StateBasedPNDeltaCounter

All Implemented Interfaces:

Count, DeltaCount, DeltaCounter, GCount, GCounter, PNCount, PNCounter

@NotThreadSafe
class StateBasedPNDeltaCounter
extends StateBasedPNCounter
implements DeltaCounter

Field Summary

Fields

Modifier and Type	Field and Description
private PNCounter	delta

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	StateBasedPNDeltaCounter()
protected	StateBasedPNDeltaCounter(long totalAdds, long totalRemoves, long recentAdds, long recentRemoves)

Method Summary

Modifier and Type	Method and Description
DeltaCounter	decrement() Decrement the counter and get the result.
long	decrementAndGet() Decrement the counter and get the result.
long	getAndDecrement() Decrement the counter and get the result.
long	getAndIncrement() Increment the counter and get the result.
PNCount	getChanges() Get the changes in the current value during the last interval.
Count	getPriorCount() Get the value of this count prior to the changes.
boolean	hasChanges() Determine if there are any changes in this count.
DeltaCounter	increment() Increment the counter and get the result.
long	incrementAndGet() Increment the counter and get the result.
DeltaCounter	merge(Count other) Merge the supplied counter into this counter.
void	reset() Start a new interval and reset the DeltaCount.getChanges() to initial values.
String	toString()

Methods inherited from class io.debezium.crdt.StateBasedPNCounter

get, getDecrement, getIncrement

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.debezium.crdt.PNCount

get, getDecrement

Methods inherited from interface io.debezium.crdt.GCount

getIncrement

Field Detail

delta

private PNCounter delta

Constructor Detail

StateBasedPNDeltaCounter

protected StateBasedPNDeltaCounter()

StateBasedPNDeltaCounter

protected StateBasedPNDeltaCounter(long totalAdds,
                                   long totalRemoves,
                                   long recentAdds,
                                   long recentRemoves)

Method Detail

increment

public DeltaCounter increment()

Description copied from interface: PNCounter

Increment the counter and get the result.

Specified by:

increment in interface DeltaCounter

Specified by:

increment in interface GCounter

Specified by:

increment in interface PNCounter

Overrides:

increment in class StateBasedPNCounter

Returns:

this instance so methods can be chained together; never null

decrement

public DeltaCounter decrement()

Description copied from interface: PNCounter

Decrement the counter and get the result.

Specified by:

decrement in interface DeltaCounter

Specified by:

decrement in interface PNCounter

Overrides:

decrement in class StateBasedPNCounter

Returns:

this instance so methods can be chained together; never null

incrementAndGet

public long incrementAndGet()

Description copied from interface: GCounter

Increment the counter and get the result.

Specified by:

incrementAndGet in interface GCounter

Overrides:

incrementAndGet in class StateBasedPNCounter

Returns:

the current result after incrementing

decrementAndGet

public long decrementAndGet()

Description copied from interface: PNCounter

Decrement the counter and get the result.

Specified by:

decrementAndGet in interface PNCounter

Overrides:

decrementAndGet in class StateBasedPNCounter

Returns:

the current result after decrementing

getAndIncrement

public long getAndIncrement()

Description copied from interface: GCounter

Increment the counter and get the result.

Specified by:

getAndIncrement in interface GCounter

Overrides:

getAndIncrement in class StateBasedPNCounter

Returns:

the current result before incrementing

getAndDecrement

public long getAndDecrement()

Description copied from interface: PNCounter

Decrement the counter and get the result.

Specified by:

getAndDecrement in interface PNCounter

Overrides:

getAndDecrement in class StateBasedPNCounter

Returns:

the current result before decrementing

getChanges

public PNCount getChanges()

Description copied from interface: DeltaCount

Get the changes in the current value during the last interval.

Specified by:

getChanges in interface DeltaCount

Returns:

the changes in the value during the last interval; never null

hasChanges

public boolean hasChanges()

Description copied from interface: DeltaCount

Determine if there are any changes in this count.

Specified by:

hasChanges in interface DeltaCount

Returns:

true if there are non-zero changes, or false otherwise

getPriorCount

public Count getPriorCount()

Description copied from interface: DeltaCount

Get the value of this count prior to the changes.

Specified by:

getPriorCount in interface DeltaCount

Returns:

the prior count; never null

reset

public void reset()

Description copied from interface: DeltaCounter

Start a new interval and reset the DeltaCount.getChanges() to initial values.

Specified by:

reset in interface DeltaCounter

merge

public DeltaCounter merge(Count other)

Description copied from interface: PNCounter

Merge the supplied counter into this counter.

Specified by:

merge in interface DeltaCounter

Specified by:

merge in interface GCounter

Specified by:

merge in interface PNCounter

Overrides:

merge in class StateBasedPNCounter

Parameters:

other - the other counter to merge into this one; may be null

Returns:

this counter so that methods can be chained

toString

public String toString()

Overrides:

toString in class StateBasedPNCounter