Soprano  2.7.6
Public Types | Public Member Functions
Soprano::Util::MutexModel Class Reference

Protect a Model for multiple calls in multi-threaded applications. More...

#include <Soprano/Util/MutexModel>

+ Inheritance diagram for Soprano::Util::MutexModel:

List of all members.

Public Types

enum  ProtectionMode { PlainMultiThreading, ReadWriteMultiThreading, ReadWriteSingleThreading }

Public Member Functions

 MutexModel (ProtectionMode mode, Model *parent=0)
 ~MutexModel ()
Error::ErrorCode addStatement (const Statement &statement)
Error::ErrorCode removeStatement (const Statement &statement)
Error::ErrorCode removeAllStatements (const Statement &statement)
StatementIterator listStatements (const Statement &partial) const
NodeIterator listContexts () const
QueryResultIterator executeQuery (const QString &query, Query::QueryLanguage language, const QString &userQueryLanguage=QString()) const
bool containsStatement (const Statement &statement) const
bool containsAnyStatement (const Statement &statement) const
bool isEmpty () const
int statementCount () const
- Public Member Functions inherited from Soprano::FilterModel
virtual ~FilterModel ()
virtual void setParentModel (Model *model)
virtual ModelparentModel () const
Error::ErrorCode addStatement (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node())
Error::ErrorCode removeStatement (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node())
Error::ErrorCode removeAllStatements (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node())
StatementIterator listStatements (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) const
bool containsStatement (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) const
bool containsAnyStatement (const Node &subject, const Node &predicate, const Node &object, const Node &context=Node()) const
virtual Error::ErrorCode write (QTextStream &os) const
virtual Node createBlankNode ()
- Public Member Functions inherited from Soprano::Model
virtual ~Model ()
Error::ErrorCode addStatements (const QList< Statement > &statements)
Error::ErrorCode removeStatements (const QList< Statement > &statements)
Error::ErrorCode removeContext (const Node &)
Error::ErrorCode removeAllStatements ()
StatementIterator listStatements () const
StatementIterator listStatementsInContext (const Node &context) const
bool containsContext (const Node &context) const
- Public Member Functions inherited from QObject
 QObject (QObject *parent=0)
 blockSignals (bool block)
 childEvent (QChildEvent *event)
 children ()
 connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type=Qt::AutoCompatConnection)
 connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type=Qt::AutoCompatConnection)
 connectNotify (const char *signal)
 customEvent (QEvent *event)
 deleteLater ()
 destroyed (QObject *obj=0)
 disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *method)
 disconnect (const char *signal=0, const QObject *receiver=0, const char *method=0)
 disconnect (const QObject *receiver, const char *method=0)
 disconnectNotify (const char *signal)
 dumpObjectInfo ()
 dumpObjectTree ()
 dynamicPropertyNames ()
 event (QEvent *e)
 eventFilter (QObject *watched, QEvent *event)
 findChild (const QString &name=QString()
 findChildren (const QString &name=QString()
 findChildren (const QRegExp &regExp)
 inherits (const char *className)
 installEventFilter (QObject *filterObj)
 isWidgetType ()
 killTimer (int id)
 metaObject ()
 moveToThread (QThread *targetThread)
 parent ()
 property (const char *name)
 receivers (const char *signal)
 removeEventFilter (QObject *obj)
 sender ()
 setParent (QObject *parent)
 setProperty (const char *name, const QVariant &value)
 signalsBlocked ()
 startTimer (int interval)
 thread ()
 timerEvent (QTimerEvent *event)
 tr (const char *sourceText, const char *comment=0, int n=-1)
 trUtf8 (const char *sourceText, const char *comment=0, int n=-1)
 staticMetaObject
 QObject (QObject *parent, const char *name)
 checkConnectArgs (const char *signal, const QObject *object, const char *method)
 child (const char *objName, const char *inheritsClass=0, bool recursiveSearch=true)
 className ()
 insertChild (QObject *object)
 isA (const char *className)
 name ()
 name (const char *defaultName)
 normalizeSignalSlot (const char *signalSlot)
 removeChild (QObject *object)
 setName (const char *name)
- Public Member Functions inherited from Soprano::Error::ErrorCache
virtual ~ErrorCache ()
virtual Error lastError () const

Additional Inherited Members

- Protected Member Functions inherited from Soprano::FilterModel
 FilterModel ()
 FilterModel (Model *parent)
virtual void parentStatementsAdded ()
virtual void parentStatementsRemoved ()
virtual void parentStatementAdded (const Statement &)
virtual void parentStatementRemoved (const Statement &)
- Protected Member Functions inherited from Soprano::Model
 Model ()
- Protected Member Functions inherited from Soprano::Error::ErrorCache
 ErrorCache ()
void clearError () const
void setError (const Error &) const
void setError (const QString &errorMessage, int code=ErrorUnknown) const

Detailed Description

Protect a Model for multiple calls in multi-threaded applications.

In most cases one does not need to use this FilterModel since Models created by Soprano::createModel and Soprano::Backend::createModel are thread-safe. It may, however, come in handy for custom models.

Author:
Sebastian Trueg trueg.nosp@m.@kde.nosp@m..org

Definition at line 44 of file mutexmodel.h.


Member Enumeration Documentation

Enumerator:
PlainMultiThreading 

In PlainMultiThreading mode only one action can be performed at the same time. Calls block until the previous call is done.

Warning:
In this mode nesting iterators will result in a deadlock.
ReadWriteMultiThreading 

In ReadWriteMultiThreading mode multiple read operations can be performed at the same time but only one write operation.

In general write operations take precedence over read operations when locking. However, the same thread can perform nested read locks an arbitrary number of times.

ReadWriteSingleThreading 
Deprecated:
This was a buggy mode which was impossible to fix. Use Soprano::Util::AsyncModel instead.

Definition at line 49 of file mutexmodel.h.


Constructor & Destructor Documentation

Soprano::Util::MutexModel::MutexModel ( ProtectionMode  mode,
Model parent = 0 
)

Create a new MutexModel.

Parameters:
modeThe mode to use.
parentThe parent Model to forward the actual calls to.
Soprano::Util::MutexModel::~MutexModel ( )

Destructor.


Member Function Documentation

Error::ErrorCode Soprano::Util::MutexModel::addStatement ( const Statement statement)
virtual

Default implementation simply pipes the call through to the parent model.

Reimplemented from Soprano::FilterModel.

Error::ErrorCode Soprano::Util::MutexModel::removeStatement ( const Statement statement)
virtual

Default implementation simply pipes the call through to the parent model.

Reimplemented from Soprano::FilterModel.

Error::ErrorCode Soprano::Util::MutexModel::removeAllStatements ( const Statement statement)
virtual

Default implementation simply pipes the call through to the parent model.

Reimplemented from Soprano::FilterModel.

StatementIterator Soprano::Util::MutexModel::listStatements ( const Statement partial) const
virtual

Default implementation simply pipes the call through to the parent model.

Reimplemented from Soprano::FilterModel.

NodeIterator Soprano::Util::MutexModel::listContexts ( ) const
virtual

Default implementation simply pipes the call through to the parent model.

Reimplemented from Soprano::FilterModel.

QueryResultIterator Soprano::Util::MutexModel::executeQuery ( const QString query,
Query::QueryLanguage  language,
const QString userQueryLanguage = QString() 
) const
virtual

Default implementation simply pipes the call through to the parent model. Default implementation simply pipes the call through to the parent model.

Reimplemented from Soprano::FilterModel.

bool Soprano::Util::MutexModel::containsStatement ( const Statement statement) const
virtual

Default implementation simply pipes the call through to the parent model.

Reimplemented from Soprano::FilterModel.

bool Soprano::Util::MutexModel::containsAnyStatement ( const Statement statement) const
virtual

Default implementation simply pipes the call through to the parent model.

Reimplemented from Soprano::FilterModel.

bool Soprano::Util::MutexModel::isEmpty ( ) const
virtual

Default implementation simply pipes the call through to the parent model.

Reimplemented from Soprano::FilterModel.

int Soprano::Util::MutexModel::statementCount ( ) const
virtual

Default implementation simply pipes the call through to the parent model.

Reimplemented from Soprano::FilterModel.


The documentation for this class was generated from the following file: