QgsMapLayerDependency Class Reference

This class models dependencies with or between map layers. More...

#include <qgsmaplayerdependency.h>

Public Types
enum	Origin { FromProvider = 0 , FromUser = 1 }
	Origin of the dependency. More...
enum	Type { PresenceDependency = 1 , DataDependency = 2 }
	Type of dependency. More...

Public Member Functions
	QgsMapLayerDependency (const QString &layerId, Type type=DataDependency, Origin origin=FromUser)
	Standard constructor.
QString	layerId () const
	Returns the ID of the layer this dependency depends on.
bool	operator== (const QgsMapLayerDependency &other) const
	Comparison operator.
Origin	origin () const
	Returns the dependency origin.
Type	type () const
	Returns the dependency type.

Detailed Description

This class models dependencies with or between map layers.

A dependency is defined by a layer ID, a type and an origin. The two combinations of type/origin that are currently supported are:

• PresenceDependency && FromProvider: virtual layers for instance which may depend on other layers already loaded to work
• DataDependency && FromUser: dependencies given by the user, mainly to represent database triggers

Since

QGIS 3.0

Definition at line 37 of file qgsmaplayerdependency.h.

Member Enumeration Documentation

Origin

enum QgsMapLayerDependency::Origin

Origin of the dependency.

Enumerator
FromProvider
FromUser

Definition at line 48 of file qgsmaplayerdependency.h.

Type

enum QgsMapLayerDependency::Type

Type of dependency.

Enumerator
PresenceDependency
DataDependency

Definition at line 41 of file qgsmaplayerdependency.h.

Constructor & Destructor Documentation

QgsMapLayerDependency()

QgsMapLayerDependency::QgsMapLayerDependency ( const QString &  layerId, Type  type = DataDependency, Origin  origin = FromUser  )

inline

Standard constructor.

Definition at line 55 of file qgsmaplayerdependency.h.

Member Function Documentation

layerId()

QString QgsMapLayerDependency::layerId ( ) const

inline

Returns the ID of the layer this dependency depends on.

Definition at line 68 of file qgsmaplayerdependency.h.

operator==()

bool QgsMapLayerDependency::operator== ( const QgsMapLayerDependency &  other ) const

inline

Comparison operator.

Definition at line 73 of file qgsmaplayerdependency.h.

origin()

Origin QgsMapLayerDependency::origin ( ) const

inline

Returns the dependency origin.

Definition at line 65 of file qgsmaplayerdependency.h.

type()

Type QgsMapLayerDependency::type ( ) const

inline

Returns the dependency type.

Definition at line 62 of file qgsmaplayerdependency.h.

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

• /build/qgis-3.34.0+99sid/src/core/qgsmaplayerdependency.h