Database subsystem. Manage database connections. More...

#include </var/dev/u3d/stable/Source/Urho3D/Database/Database.h>

Inheritance diagram for Urho3D::Database:

Collaboration diagram for Urho3D::Database:

Public Member Functions
	Database (Context *context)
	Construct.

DbConnection *	Connect (const String &connectionString)
	Create new database connection. Return 0 if failed.

void	Disconnect (DbConnection *connection)
	Disconnect a database connection. The connection object pointer should not be used anymore after this.

bool	IsPooling () const

unsigned	GetPoolSize () const

void	SetPoolSize (unsigned poolSize)

Public Member Functions inherited from Urho3D::Object
	Object (Context *context)
	Construct.

	~Object () override
	Destruct. Clean up self from event sender & receiver structures.

virtual StringHash	GetType () const =0

virtual const String &	GetTypeName () const =0

virtual const TypeInfo *	GetTypeInfo () const =0
	Return type info.

virtual void	OnEvent (Object *sender, StringHash eventType, VariantMap &eventData)
	Handle event.

bool	IsInstanceOf (StringHash type) const
	Check current instance is type of specified type.

bool	IsInstanceOf (const TypeInfo *typeInfo) const
	Check current instance is type of specified type.

template<typename T >
bool	IsInstanceOf () const
	Check current instance is type of specified class.

template<typename T >
T *	Cast ()
	Cast the object to specified most derived class.

template<typename T >
const T *	Cast () const
	Cast the object to specified most derived class.

void	SubscribeToEvent (StringHash eventType, EventHandler *handler)
	Subscribe to an event that can be sent by any sender.

void	SubscribeToEvent (Object sender, StringHash eventType, EventHandler handler)
	Subscribe to a specific sender's event.

void	SubscribeToEvent (StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void *userData=nullptr)
	Subscribe to an event that can be sent by any sender.

void	SubscribeToEvent (Object sender, StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void userData=nullptr)
	Subscribe to a specific sender's event.

void	UnsubscribeFromEvent (StringHash eventType)
	Unsubscribe from an event.

void	UnsubscribeFromEvent (Object *sender, StringHash eventType)
	Unsubscribe from a specific sender's event.

void	UnsubscribeFromEvents (Object *sender)
	Unsubscribe from a specific sender's events.

void	UnsubscribeFromAllEvents ()
	Unsubscribe from all events.

void	UnsubscribeFromAllEventsExcept (const PODVector< StringHash > &exceptions, bool onlyUserData)
	Unsubscribe from all events except those listed, and optionally only those with userdata (script registered events).

void	SendEvent (StringHash eventType)
	Send event to all subscribers.

void	SendEvent (StringHash eventType, VariantMap &eventData)
	Send event with parameters to all subscribers.

VariantMap &	GetEventDataMap () const
	Return a preallocated map for event data. Used for optimization to avoid constant re-allocation of event data maps.

template<typename... Args>
void	SendEvent (StringHash eventType, Args... args)
	Send event with variadic parameter pairs to all subscribers. The parameter pairs is a list of paramID and paramValue separated by comma, one pair after another.

Context *	GetContext () const
	Return execution context.

const Variant &	GetGlobalVar (StringHash key) const

const VariantMap &	GetGlobalVars () const

void	SetGlobalVar (StringHash key, const Variant &value)

Object *	GetSubsystem (StringHash type) const
	Return subsystem by type.

Object *	GetEventSender () const
	Return active event sender. Null outside event handling.

EventHandler *	GetEventHandler () const
	Return active event handler. Null outside event handling.

bool	HasSubscribedToEvent (StringHash eventType) const
	Return whether has subscribed to an event without specific sender.

bool	HasSubscribedToEvent (Object *sender, StringHash eventType) const
	Return whether has subscribed to a specific sender's event.

bool	HasEventHandlers () const
	Return whether has subscribed to any event.

template<class T >
T *	GetSubsystem () const
	Template version of returning a subsystem.

const String &	GetCategory () const

void	SetBlockEvents (bool block)
	Block object from sending and receiving events.

bool	GetBlockEvents () const
	Return sending and receiving events blocking status.

Public Member Functions inherited from Urho3D::RefCounted
	RefCounted ()
	Construct. Allocate the reference count structure and set an initial self weak reference.

virtual	~RefCounted ()
	Destruct. Mark as expired and also delete the reference count structure if no outside weak references exist.

	RefCounted (const RefCounted &rhs)=delete
	Prevent copy construction.

RefCounted &	operator= (const RefCounted &rhs)=delete
	Prevent assignment.

void	AddRef ()

void	ReleaseRef ()

int	Refs () const

int	WeakRefs () const

RefCount *	RefCountPtr ()
	Return pointer to the reference count structure.

Static Public Member Functions
static DBAPI	GetAPI ()
	Return the underlying database API.

Static Public Member Functions inherited from Urho3D::Object
static const TypeInfo *	GetTypeInfoStatic ()
	Return type info static.

Private Member Functions
	URHO3D_OBJECT (Database, Object)

Private Attributes
unsigned	poolSize_
	Database connection pool size. Default to 0 when using ODBC 3.0 or later as ODBC 3.0 driver manager could manage its own database connection pool.

Vector< SharedPtr< DbConnection > >	connections_
	Active database connections.

HashMap< String, Vector< SharedPtr< DbConnection > > >	connectionsPool_
	Database connections pool.

Additional Inherited Members
Protected Attributes inherited from Urho3D::Object
Context *	context_
	Execution context.

Detailed Description

Database subsystem. Manage database connections.

Member Function Documentation

◆ GetPoolSize()

unsigned Urho3D::Database::GetPoolSize ( ) const

inline

Get internal database connection pool size.

◆ IsPooling()

bool Urho3D::Database::IsPooling ( ) const

inline

Return true when using internal database connection pool. The internal database pool is managed by the Database subsystem itself and should not be confused with ODBC connection pool option when ODBC is being used.

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◆ SetPoolSize()

void Urho3D::Database::SetPoolSize ( unsigned poolSize )

inline

Set internal database connection pool size.

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

/var/dev/u3d/stable/Source/Urho3D/Database/Database.h
/var/dev/u3d/stable/Source/Urho3D/Database/Database.cpp

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ GetPoolSize()

◆ IsPooling()

◆ SetPoolSize()