Package com.hazelcast.transaction

Class TransactionOptions

java.lang.Object

com.hazelcast.transaction.TransactionOptions

All Implemented Interfaces:

DataSerializable

public final class TransactionOptions
extends Object
implements DataSerializable

Contains the configuration for a Hazelcast transaction.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	TransactionOptions.TransactionType	The type of transaction.

Field Summary

Fields

Modifier and Type	Field	Description
static final long	DEFAULT_TIMEOUT_MILLIS	2 minutes as default timeout value

Constructor Summary

Constructors

Constructor	Description
TransactionOptions()	Creates a new default configured TransactionsOptions.

Method Summary

Modifier and Type	Method	Description
static TransactionOptions	getDefault()	Creates a new TransactionOptions configured with default settings.
int	getDurability()	Gets the transaction durability.
long	getTimeoutMillis()	Gets the timeout in milliseconds.
TransactionOptions.TransactionType	getTransactionType()	Gets the TransactionOptions.TransactionType.
void	readData(ObjectDataInput in)	Reads fields from the input stream
TransactionOptions	setDurability(int durability)	Sets the transaction durability.
TransactionOptions	setTimeout(long timeout, TimeUnit timeUnit)	Sets the timeout.
TransactionOptions	setTransactionType(TransactionOptions.TransactionType transactionType)	Sets the TransactionOptions.TransactionType.
String	toString()
void	writeData(ObjectDataOutput out)	Writes object fields to output stream

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_TIMEOUT_MILLIS

public static final long DEFAULT_TIMEOUT_MILLIS

2 minutes as default timeout value

Constructor Details

TransactionOptions

public TransactionOptions()

Creates a new default configured TransactionsOptions.

It will be configured with a timeout of 2 minutes, durability of 1 and a TransactionType.TWO_PHASE.

Method Details

getTransactionType

public TransactionOptions.TransactionType getTransactionType()

Gets the TransactionOptions.TransactionType.

Returns:

the TransactionType.

setTransactionType

public TransactionOptions setTransactionType(TransactionOptions.TransactionType transactionType)

Sets the TransactionOptions.TransactionType.

A local transaction is less safe than a two phase transaction; when a member fails during the commit of a local transaction, it could be that some of the changes are committed, while others are not and this can leave your system in an inconsistent state.

Parameters:

transactionType - the new TransactionType.

Returns:

the updated TransactionOptions.

See Also:

• getTransactionType()
• setDurability(int)

getTimeoutMillis

public long getTimeoutMillis()

Gets the timeout in milliseconds.

Returns:

the timeout in milliseconds.

See Also:

• setTimeout(long, java.util.concurrent.TimeUnit)

setTimeout

public TransactionOptions setTimeout(long timeout,
 TimeUnit timeUnit)

Sets the timeout.

The timeout determines the maximum lifespan of a transaction. So if a transaction is configured with a timeout of 2 minutes, then it will automatically roll back if it hasn't committed yet.

Parameters:

timeout - the timeout.

timeUnit - the TimeUnit of the timeout.

Returns:

the updated TransactionOptions

Throws:

IllegalArgumentException - if timeout smaller or equal than 0, or timeUnit is null.

See Also:

• getTimeoutMillis()

getDurability

public int getDurability()

Gets the transaction durability.

Returns:

the transaction durability.

See Also:

• setDurability(int)

setDurability

public TransactionOptions setDurability(int durability)

Sets the transaction durability.

The durability is the number of machines that can take over if a member fails during a transaction commit or rollback. This value only has meaning when TransactionOptions.TransactionType.TWO_PHASE is selected.

Parameters:

durability - the durability

Returns:

the updated TransactionOptions.

Throws:

IllegalArgumentException - if durability smaller than 0.

getDefault

public static TransactionOptions getDefault()

Creates a new TransactionOptions configured with default settings.

Returns:

the created default TransactionOptions.

See Also:

• TransactionOptions()

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

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

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.

toString

public String toString()

Overrides:

toString in class Object