Package io.bdeploy.bhive

Class BHiveTransactions

java.lang.Object

io.bdeploy.bhive.BHiveTransactions

public class BHiveTransactions
extends Object

Keeps track of running operations in the JVM.

Uses MarkerDatabase to synchronize with other JVMs which might have operations running as well.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	BHiveTransactions.Transaction	Represents a writing transaction in the BHive.

Constructor Summary

Constructors

Constructor	Description
BHiveTransactions(BHive hive, Path markerRoot, ActivityReporter reporter)

Method Summary

Modifier and Type	Method	Description
BHiveTransactions.Transaction	begin()	Begins a new transaction on this thread.
long	cleanStaleTransactions()	This method can be used to detect and clean stale transactions which may keep (potentially damaged) objects alive.
void	detachThread()	Transactions are inherited by default.
boolean	hasTransaction()
void	touchObject(ObjectId object)

Methods inherited from class java.lang.Object

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

Constructor Details

BHiveTransactions

public BHiveTransactions(BHive hive,
 Path markerRoot,
 ActivityReporter reporter)

Method Details

detachThread

public void detachThread()

Transactions are inherited by default. If this is not desired, this method can be used to explicitly detach the current Thread from its parent (and potential sibling threads).

touchObject

public void touchObject(ObjectId object)

Parameters:

object - the object which should be considered "touched", i.e. inserted.

hasTransaction

public boolean hasTransaction()

Returns:

whether the current thread has an associated transaction.

begin

public BHiveTransactions.Transaction begin()

Begins a new transaction on this thread.

Inserts on the ObjectDatabase of a BHive will use this transaction to keep track of objects inserted.

Returns:

a BHiveTransactions.Transaction which will cleanup associated resources when closed.

cleanStaleTransactions

public long cleanStaleTransactions()

This method can be used to detect and clean stale transactions which may keep (potentially damaged) objects alive.

Returns:

the amount of stale transactions found (and removed).