Package org.aksw.jenax.arq.dataset.diff

Class TransactionalCollectionImpl<T,C extends Collection<T>>

java.lang.Object

java.util.AbstractCollection<T>

org.aksw.jenax.arq.dataset.diff.TransactionalCollectionImpl<T,C>

Type Parameters:

T -

C -

All Implemented Interfaces:

Iterable<T>, Collection<T>, TransactionalCollection<T>, org.apache.jena.sparql.core.Transactional

Direct Known Subclasses:

TransactionalSetImpl

public class TransactionalCollectionImpl<T,C extends Collection<T>>
extends AbstractCollection<T>
implements TransactionalCollection<T>

A wrapper for a collection that provides transactions using MRSW locking. Also uses copy-on-write; i.e. the thread with the write transaction creates a full copy of the underlying collection - which is far from optimal.

Author:

raven

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TransactionalCollectionImpl.TxnState<T,C extends Collection<T>>

Nested classes/interfaces inherited from interface org.apache.jena.sparql.core.Transactional

org.apache.jena.sparql.core.Transactional.Promote

Field Summary

Fields

Modifier and Type	Field	Description
protected Function<? super C,? extends C>	cloner
protected AtomicReference<C>	master
protected ThreadLocal<TransactionalCollectionImpl.TxnState<T,C>>	txnState

Constructor Summary

Constructors

Constructor	Description
TransactionalCollectionImpl(C baseCollection, Function<? super C,? extends C> cloner)

Method Summary

Modifier and Type	Method	Description
void	abort()
boolean	add(T e)
void	begin(org.apache.jena.query.ReadWrite readWrite)
void	begin(org.apache.jena.query.TxnType txnType)
void	commit()
boolean	contains(Object o)
void	end()
boolean	isInTransaction()
Iterator<T>	iterator()
protected <X, R> R	mutate(Function<C,R> action)
boolean	promote(org.apache.jena.sparql.core.Transactional.Promote promoteMode)
int	size()
org.apache.jena.query.ReadWrite	transactionMode()
org.apache.jena.query.TxnType	transactionType()

Methods inherited from class java.util.AbstractCollection

addAll, clear, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

addAll, clear, containsAll, equals, hashCode, isEmpty, parallelStream, remove, removeAll, removeIf, retainAll, spliterator, stream, toArray, toArray, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface org.apache.jena.sparql.core.Transactional

begin, calc, calculate, calculateRead, calculateWrite, exec, execute, executeRead, executeWrite, promote

Field Details

master

protected AtomicReference<C extends Collection<T>> master

txnState

protected ThreadLocal<TransactionalCollectionImpl.TxnState<T,C extends Collection<T>>> txnState

cloner

protected Function<? super C extends Collection<T>,? extends C extends Collection<T>> cloner

Constructor Details

TransactionalCollectionImpl

public TransactionalCollectionImpl(C baseCollection,
 Function<? super C,? extends C> cloner)

Method Details

commit

public void commit()

Specified by:

commit in interface org.apache.jena.sparql.core.Transactional

abort

public void abort()

Specified by:

abort in interface org.apache.jena.sparql.core.Transactional

end

public void end()

Specified by:

end in interface org.apache.jena.sparql.core.Transactional

begin

public void begin(org.apache.jena.query.ReadWrite readWrite)

Specified by:

begin in interface org.apache.jena.sparql.core.Transactional

begin

public void begin(org.apache.jena.query.TxnType txnType)

Specified by:

begin in interface org.apache.jena.sparql.core.Transactional

promote

public boolean promote(org.apache.jena.sparql.core.Transactional.Promote promoteMode)

Specified by:

promote in interface org.apache.jena.sparql.core.Transactional

transactionMode

public org.apache.jena.query.ReadWrite transactionMode()

Specified by:

transactionMode in interface org.apache.jena.sparql.core.Transactional

transactionType

public org.apache.jena.query.TxnType transactionType()

Specified by:

transactionType in interface org.apache.jena.sparql.core.Transactional

isInTransaction

public boolean isInTransaction()

Specified by:

isInTransaction in interface org.apache.jena.sparql.core.Transactional

mutate

protected <X,
R> R mutate(Function<C,R> action)

add

public boolean add(T e)

Specified by:

add in interface Collection<T>

Overrides:

add in class AbstractCollection<T>

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Collection<T>

Specified by:

iterator in interface Iterable<T>

Specified by:

iterator in class AbstractCollection<T>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<T>

Overrides:

contains in class AbstractCollection<T>

size

public int size()

Specified by:

size in interface Collection<T>

Specified by:

size in class AbstractCollection<T>