QgsDatabaseSchemaModel Class Reference

A model containing schemas from a database connection. More...

#include <qgsdatabaseschemamodel.h>

Inheritance diagram for QgsDatabaseSchemaModel:

Public Types
enum class	CustomRole : int { Empty = Qt::UserRole }
	Custom model roles. More...

Public Slots
void	refresh ()
	Refreshes the schema list by querying the underlying connection.

Public Member Functions
	QgsDatabaseSchemaModel (const QString &provider, const QString &connection, QObject *parent=nullptr)
	Constructor for QgsDatabaseSchemaModel, for the specified provider and connection name.
	QgsDatabaseSchemaModel (QgsAbstractDatabaseProviderConnection *connection, QObject *parent=nullptr)
	Constructor for QgsDatabaseSchemaModel, for the specified connection.
bool	allowEmptySchema () const
	Returns true if the model allows the empty schema ("not set") choice.
int	columnCount (const QModelIndex &parent=QModelIndex()) const override
QVariant	data (const QModelIndex &index, int role=Qt::DisplayRole) const override
QModelIndex	index (int row, int column, const QModelIndex &parent) const override
QModelIndex	parent (const QModelIndex &child) const override
int	rowCount (const QModelIndex &parent=QModelIndex()) const override
void	setAllowEmptySchema (bool allowEmpty)
	Sets whether an optional empty schema ("not set") option is present in the model.

Detailed Description

A model containing schemas from a database connection.

This class does not automatically subscribe to database updates. Schemas are queried from the database initially upon model construction. In order to update the listed schemas, QgsDatabaseSchemaModel::refresh() must be manually called.

Since

QGIS 3.14

Definition at line 42 of file qgsdatabaseschemamodel.h.

Member Enumeration Documentation

CustomRole

enum class QgsDatabaseSchemaModel::CustomRole : int

strong

Custom model roles.

Note

Prior to QGIS 3.36 this was available as QgsDatabaseSchemaModel::Role

Since

QGIS 3.36

Enumerator
Empty	Entry is an empty entry.

Definition at line 56 of file qgsdatabaseschemamodel.h.

Constructor & Destructor Documentation

QgsDatabaseSchemaModel() [1/2]

QgsDatabaseSchemaModel::QgsDatabaseSchemaModel ( const QString &  provider, const QString &  connection, QObject *  parent = nullptr  )

explicit

Constructor for QgsDatabaseSchemaModel, for the specified provider and connection name.

Warning

The provider must support the connection API methods in its QgsProviderMetadata implementation in order for the model to work correctly.

Definition at line 20 of file qgsdatabaseschemamodel.cpp.

QgsDatabaseSchemaModel() [2/2]

QgsDatabaseSchemaModel::QgsDatabaseSchemaModel ( QgsAbstractDatabaseProviderConnection *  connection, QObject *  parent = nullptr  )

explicit

Constructor for QgsDatabaseSchemaModel, for the specified connection.

Ownership of connection is transferred to the model.

Definition at line 31 of file qgsdatabaseschemamodel.cpp.

Member Function Documentation

allowEmptySchema()

bool QgsDatabaseSchemaModel::allowEmptySchema ( ) const

inline

Returns true if the model allows the empty schema ("not set") choice.

See also

setAllowEmptySchema()

Definition at line 95 of file qgsdatabaseschemamodel.h.

columnCount()

int QgsDatabaseSchemaModel::columnCount ( const QModelIndex &  parent = QModelIndex() ) const

override

Definition at line 60 of file qgsdatabaseschemamodel.cpp.

data()

QVariant QgsDatabaseSchemaModel::data ( const QModelIndex &  index, int  role = Qt::DisplayRole  ) const

override

Definition at line 67 of file qgsdatabaseschemamodel.cpp.

index()

QModelIndex QgsDatabaseSchemaModel::index ( int  row, int  column, const QModelIndex &  parent  ) const

override

Definition at line 97 of file qgsdatabaseschemamodel.cpp.

parent()

QModelIndex QgsDatabaseSchemaModel::parent ( const QModelIndex &  child ) const

override

Definition at line 45 of file qgsdatabaseschemamodel.cpp.

refresh

void QgsDatabaseSchemaModel::refresh ( )

slot

Refreshes the schema list by querying the underlying connection.

Definition at line 126 of file qgsdatabaseschemamodel.cpp.

rowCount()

int QgsDatabaseSchemaModel::rowCount ( const QModelIndex &  parent = QModelIndex() ) const

override

Definition at line 52 of file qgsdatabaseschemamodel.cpp.

setAllowEmptySchema()

void QgsDatabaseSchemaModel::setAllowEmptySchema

(

bool

allowEmpty

)

Sets whether an optional empty schema ("not set") option is present in the model.

See also

allowEmptySchema()

Definition at line 107 of file qgsdatabaseschemamodel.cpp.

---

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

• /build/qgis-3.40.0+99sid/src/core/qgsdatabaseschemamodel.h
• /build/qgis-3.40.0+99sid/src/core/qgsdatabaseschemamodel.cpp