io.debezium.crdt

Class StateBasedPNCounter

java.lang.Object

io.debezium.crdt.StateBasedPNCounter

All Implemented Interfaces:

Count, GCount, GCounter, PNCount, PNCounter

Direct Known Subclasses:

StateBasedPNDeltaCounter

@NotThreadSafe
class StateBasedPNCounter
extends Object
implements PNCounter

Field Summary

Fields

Modifier and Type	Field and Description
private long	adds
private long	removes

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	StateBasedPNCounter()
protected	StateBasedPNCounter(long adds, long removes)

Method Summary

Modifier and Type	Method and Description
PNCounter	decrement() Decrement the counter and get the result.
long	decrementAndGet() Decrement the counter and get the result.
long	get() Get the current value.
long	getAndDecrement() Decrement the counter and get the result.
long	getAndIncrement() Increment the counter and get the result.
long	getDecrement() Get the amount that the value decremented.
long	getIncrement() Get the amount that the value incremented.
PNCounter	increment() Increment the counter and get the result.
long	incrementAndGet() Increment the counter and get the result.
PNCounter	merge(Count other) Merge the supplied counter into this counter.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

adds

private long adds

removes

private long removes

Constructor Detail

StateBasedPNCounter

protected StateBasedPNCounter()

StateBasedPNCounter

protected StateBasedPNCounter(long adds,
                              long removes)

Method Detail

increment

public PNCounter increment()

Description copied from interface: PNCounter

Increment the counter and get the result.

Specified by:

increment in interface GCounter

Specified by:

increment in interface PNCounter

Returns:

this instance so methods can be chained together; never null

decrement

public PNCounter decrement()

Description copied from interface: PNCounter

Decrement the counter and get the result.

Specified by:

decrement in interface PNCounter

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

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

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

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

Returns:

the current result before decrementing

get

public long get()

Description copied from interface: PNCount

Get the current value.

Specified by:

get in interface Count

Specified by:

get in interface PNCount

Returns:

the current value

getIncrement

public long getIncrement()

Description copied from interface: GCount

Get the amount that the value incremented.

Specified by:

getIncrement in interface GCount

Returns:

the incremented value

getDecrement

public long getDecrement()

Description copied from interface: PNCount

Get the amount that the value decremented. The value is the total increments minus the total decrements

Specified by:

getDecrement in interface PNCount

Returns:

the decremented value

merge

public PNCounter merge(Count other)

Description copied from interface: PNCounter

Merge the supplied counter into this counter.

Specified by:

merge in interface GCounter

Specified by:

merge in interface PNCounter

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 Object