mirror of
https://github.com/qgis/QGIS.git
synced 2025-10-30 00:07:09 -04:00
478 lines
15 KiB
Plaintext
478 lines
15 KiB
Plaintext
/************************************************************************
|
|
* This file has been generated automatically from *
|
|
* *
|
|
* src/core/qgsweakrelation.h *
|
|
* *
|
|
* Do not edit manually ! Edit header and run scripts/sipify.pl again *
|
|
************************************************************************/
|
|
|
|
|
|
class QgsWeakRelation
|
|
{
|
|
%Docstring(signature="appended")
|
|
The :py:class:`QgsWeakRelation` class represent a :py:class:`QgsRelation` with possibly
|
|
unresolved layers or unmatched fields.
|
|
|
|
This class is used to store relation information attached to a
|
|
layer style, a method to attempt relation resolution is also
|
|
implemented and can be used to create a :py:class:`QgsRelation` after the
|
|
dependent layers are loaded and available.
|
|
|
|
In contrast to :py:class:`QgsRelation`, :py:class:`QgsWeakRelation` can be used to encapsulate
|
|
information about a relationship which does not currently exist in a QGIS project.
|
|
E.g. it can be used to represent a relationship which exists in a database
|
|
backend (but not within a QGIS project). Accordingly, some properties
|
|
available in :py:class:`QgsWeakRelation` are included for informational purposes only,
|
|
and cannot be translated to :py:class:`QgsRelations` or respected in QGIS relationships.
|
|
|
|
.. versionadded:: 3.12
|
|
%End
|
|
|
|
%TypeHeaderCode
|
|
#include "qgsweakrelation.h"
|
|
%End
|
|
public:
|
|
|
|
enum WeakRelationType
|
|
{
|
|
Referencing,
|
|
Referenced
|
|
};
|
|
|
|
QgsWeakRelation();
|
|
%Docstring
|
|
Default constructor for an invalid relation.
|
|
%End
|
|
|
|
QgsWeakRelation( const QString &relationId,
|
|
const QString &relationName,
|
|
const Qgis::RelationshipStrength strength,
|
|
const QString &referencingLayerId,
|
|
const QString &referencingLayerName,
|
|
const QString &referencingLayerSource,
|
|
const QString &referencingLayerProviderKey,
|
|
const QString &referencedLayerId,
|
|
const QString &referencedLayerName,
|
|
const QString &referencedLayerSource,
|
|
const QString &referencedLayerProviderKey
|
|
);
|
|
%Docstring
|
|
Creates a QgsWeakRelation.
|
|
|
|
.. versionadded:: 3.30
|
|
%End
|
|
|
|
QList< QgsRelation > resolvedRelations( const QgsProject *project ) const;
|
|
%Docstring
|
|
Resolves a weak relation in the given ``project`` returning a list of possibly invalid :py:class:`QgsRelations`
|
|
and without performing any kind of validity check.
|
|
|
|
.. note::
|
|
|
|
Client code should never assume that the returned relations are valid and the
|
|
layer components are not NULL.
|
|
%End
|
|
|
|
QString id() const;
|
|
%Docstring
|
|
Returns the relationship's ID.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
QString name() const;
|
|
%Docstring
|
|
Returns the relationship's name.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
|
|
QString referencingLayerSource() const;
|
|
%Docstring
|
|
Returns the source URI for the referencing (or "child" / "right") layer.
|
|
|
|
.. seealso:: :py:func:`referencingLayerProvider`
|
|
|
|
.. seealso:: :py:func:`setReferencingLayer`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
QString referencingLayerProvider() const;
|
|
%Docstring
|
|
Returns the provider ID for the referencing (or "child" / "right") layer.
|
|
|
|
.. seealso:: :py:func:`referencingLayerSource`
|
|
|
|
.. seealso:: :py:func:`setReferencingLayer`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
QString referencingLayerName() const;
|
|
%Docstring
|
|
Returns the layer name of the referencing (or "child" / "right") layer.
|
|
|
|
.. note::
|
|
|
|
the layer name refers to the layer name used in the datasource, not in any associated
|
|
:py:class:`QgsVectorLayer`.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
void setReferencingLayer( const QString &sourceUri, const QString &provider );
|
|
%Docstring
|
|
Sets the source for the referencing (or "child" / "right") layer, by ``sourceUri`` and ``provider`` ID.
|
|
|
|
.. seealso:: :py:func:`referencingLayerSource`
|
|
|
|
.. seealso:: :py:func:`referencingLayerProvider`
|
|
|
|
.. versionadded:: 3.36
|
|
%End
|
|
|
|
|
|
QString referencedLayerSource() const;
|
|
%Docstring
|
|
Returns the source URI for the referenced (or "parent" / "left") layer.
|
|
|
|
.. seealso:: :py:func:`referencedLayerProvider`
|
|
|
|
.. seealso:: :py:func:`setReferencedLayer`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
QString referencedLayerProvider() const;
|
|
%Docstring
|
|
Returns the provider ID for the referenced (or "parent" / "left") layer.
|
|
|
|
.. seealso:: :py:func:`referencedLayerSource`
|
|
|
|
.. seealso:: :py:func:`setReferencedLayer`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
QString referencedLayerName() const;
|
|
%Docstring
|
|
Returns the layer name of the referenced (or "parent" / "left") layer.
|
|
|
|
.. note::
|
|
|
|
the layer name refers to the layer name used in the datasource, not in any associated
|
|
:py:class:`QgsVectorLayer`.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
void setReferencedLayer( const QString &sourceUri, const QString &provider );
|
|
%Docstring
|
|
Sets the source for the referenced (or "parent" / "left") layer, by ``sourceUri`` and ``provider`` ID.
|
|
|
|
.. seealso:: :py:func:`referencedLayerSource`
|
|
|
|
.. seealso:: :py:func:`referencedLayerProvider`
|
|
|
|
.. versionadded:: 3.36
|
|
%End
|
|
|
|
|
|
|
|
QString mappingTableSource() const;
|
|
%Docstring
|
|
Returns the source URI for the mapping table, which forms the middle table in many-to-many relationships.
|
|
|
|
.. seealso:: :py:func:`mappingTableProvider`
|
|
|
|
.. seealso:: :py:func:`setMappingTable`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
QString mappingTableProvider() const;
|
|
%Docstring
|
|
Returns the provider ID for the mapping table, which forms the middle table in many-to-many relationships.
|
|
|
|
.. seealso:: :py:func:`mappingTableSource`
|
|
|
|
.. seealso:: :py:func:`setMappingTable`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
QString mappingTableName() const;
|
|
%Docstring
|
|
Returns the layer name of the mapping table, which forms the middle table in many-to-many relationships.
|
|
|
|
.. note::
|
|
|
|
the layer name refers to the layer name used in the datasource, not in any associated
|
|
:py:class:`QgsVectorLayer`.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
void setMappingTable( const QString &sourceUri, const QString &provider );
|
|
%Docstring
|
|
Sets the source for the mapping table, which forms the middle table in many-to-many relationships, by ``sourceUri`` and ``provider`` ID.
|
|
|
|
.. seealso:: :py:func:`mappingTableSource`
|
|
|
|
.. seealso:: :py:func:`mappingTableProvider`
|
|
|
|
.. versionadded:: 3.36
|
|
%End
|
|
|
|
QStringList referencingLayerFields() const;
|
|
%Docstring
|
|
Returns the list of fields from the :py:func:`~QgsWeakRelation.referencingLayer` involved in the relationship.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
void setReferencingLayerFields( const QStringList &fields );
|
|
%Docstring
|
|
Sets the list of ``fields`` from the :py:func:`~QgsWeakRelation.referencingLayer` involved in the relationship.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
QStringList mappingReferencingLayerFields() const;
|
|
%Docstring
|
|
Returns the list of fields from the :py:func:`~QgsWeakRelation.mappingTable` involved in the relationship.
|
|
|
|
These fields will be matched to the :py:func:`~QgsWeakRelation.referencingLayerFields` in many-to-many joins.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
void setMappingReferencingLayerFields( const QStringList &fields );
|
|
%Docstring
|
|
Sets the list of ``fields`` from the :py:func:`~QgsWeakRelation.mappingTable` involved in the relationship.
|
|
|
|
These fields will be matched to the :py:func:`~QgsWeakRelation.referencingLayerFields` in many-to-many joins.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
QStringList referencedLayerFields() const;
|
|
%Docstring
|
|
Returns the list of fields from the :py:func:`~QgsWeakRelation.referencedLayer` involved in the relationship.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
void setReferencedLayerFields( const QStringList &fields );
|
|
%Docstring
|
|
Sets the list of ``fields`` from the :py:func:`~QgsWeakRelation.referencedLayer` involved in the relationship.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
QStringList mappingReferencedLayerFields() const;
|
|
%Docstring
|
|
Returns the list of fields from the :py:func:`~QgsWeakRelation.mappingTable` involved in the relationship.
|
|
|
|
These fields will be matched to the :py:func:`~QgsWeakRelation.referencedLayerFields` in many-to-many joins.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
void setMappingReferencedLayerFields( const QStringList &fields );
|
|
%Docstring
|
|
Sets the list of ``fields`` from the :py:func:`~QgsWeakRelation.mappingTable` involved in the relationship.
|
|
|
|
These fields will be matched to the :py:func:`~QgsWeakRelation.referencedLayerFields` in many-to-many joins.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
Qgis::RelationshipStrength strength() const;
|
|
%Docstring
|
|
Returns the strength of the relation.
|
|
%End
|
|
|
|
Qgis::RelationshipCardinality cardinality() const;
|
|
%Docstring
|
|
Returns the relationship's cardinality.
|
|
|
|
.. seealso:: :py:func:`setCardinality`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
void setCardinality( Qgis::RelationshipCardinality cardinality );
|
|
%Docstring
|
|
Sets the relationship's ``cardinality``.
|
|
|
|
.. seealso:: :py:func:`cardinality`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
QString forwardPathLabel() const;
|
|
%Docstring
|
|
Returns the label of the forward path for the relationship.
|
|
|
|
The forward and backward path labels are free-form, user-friendly strings
|
|
which can be used to generate descriptions of the relationship between features
|
|
from the right and left tables.
|
|
|
|
E.g. when the left table contains buildings and the right table contains
|
|
furniture, the forward path label could be "contains" and the backward path
|
|
label could be "is located within". A client could then generate a
|
|
user friendly description string such as "fire hose 1234 is located within building 15a".
|
|
|
|
.. seealso:: :py:func:`setForwardPathLabel`
|
|
|
|
.. seealso:: :py:func:`backwardPathLabel`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
QString backwardPathLabel() const;
|
|
%Docstring
|
|
Returns the label of the backward path for the relationship.
|
|
|
|
The forward and backward path labels are free-form, user-friendly strings
|
|
which can be used to generate descriptions of the relationship between features
|
|
from the right and left tables.
|
|
|
|
E.g. when the left table contains buildings and the right table contains
|
|
furniture, the forward path label could be "contains" and the backward path
|
|
label could be "is located within". A client could then generate a
|
|
user friendly description string such as "fire hose 1234 is located within building 15a".
|
|
|
|
.. seealso:: :py:func:`setBackwardPathLabel`
|
|
|
|
.. seealso:: :py:func:`forwardPathLabel`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
void setForwardPathLabel( const QString &label );
|
|
%Docstring
|
|
Sets the ``label`` of the forward path for the relationship.
|
|
|
|
The forward and backward path labels are free-form, user-friendly strings
|
|
which can be used to generate descriptions of the relationship between features
|
|
from the right and left tables.
|
|
|
|
E.g. when the left table contains buildings and the right table contains
|
|
furniture, the forward path label could be "contains" and the backward path
|
|
label could be "is located within". A client could then generate a
|
|
user friendly description string such as "fire hose 1234 is located within building 15a".
|
|
|
|
.. seealso:: :py:func:`forwardPathLabel`
|
|
|
|
.. seealso:: :py:func:`setBackwardPathLabel`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
void setBackwardPathLabel( const QString &label );
|
|
%Docstring
|
|
Sets the ``label`` of the backward path for the relationship.
|
|
|
|
The forward and backward path labels are free-form, user-friendly strings
|
|
which can be used to generate descriptions of the relationship between features
|
|
from the right and left tables.
|
|
|
|
E.g. when the left table contains buildings and the right table contains
|
|
furniture, the forward path label could be "contains" and the backward path
|
|
label could be "is located within". A client could then generate a
|
|
user friendly description string such as "fire hose 1234 is located within building 15a".
|
|
|
|
.. seealso:: :py:func:`backwardPathLabel`
|
|
|
|
.. seealso:: :py:func:`setForwardPathLabel`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
QString relatedTableType() const;
|
|
%Docstring
|
|
Returns the type string of the related table.
|
|
|
|
This a free-form string representing the type of related features, where the
|
|
exact interpretation is format dependent. For instance, table types from GeoPackage
|
|
relationships will directly reflect the categories from the GeoPackage related
|
|
tables extension (i.e. "media", "simple attributes", "features", "attributes" and "tiles").
|
|
|
|
.. seealso:: :py:func:`setRelatedTableType`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
void setRelatedTableType( const QString &type );
|
|
%Docstring
|
|
Sets the ``type`` string of the related table.
|
|
|
|
This a free-form string representing the type of related features, where the
|
|
exact interpretation is format dependent. For instance, table types from GeoPackage
|
|
relationships will directly reflect the categories from the GeoPackage related
|
|
tables extension (i.e. "media", "simple attributes", "features", "attributes" and "tiles").
|
|
|
|
.. seealso:: :py:func:`relatedTableType`
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
static QgsWeakRelation readXml( const QgsVectorLayer *layer, WeakRelationType type, const QDomNode &node, const QgsPathResolver resolver );
|
|
%Docstring
|
|
Returns a weak relation for the given layer.
|
|
|
|
:param layer: the layer of the weak relation
|
|
:param type: determines if the layer is referencing or referenced
|
|
:param node: the QDomNode
|
|
:param resolver: the path resolver
|
|
|
|
.. versionadded:: 3.16
|
|
%End
|
|
|
|
static void writeXml( const QgsVectorLayer *layer, WeakRelationType type, const QgsRelation &relation, QDomNode &node, QDomDocument &doc );
|
|
%Docstring
|
|
Writes a weak relation infoto an XML structure. Used for saving .qgs projects
|
|
|
|
:param layer: the layer which we save the weak relation for
|
|
:param type: determines if the layer is referencing or referenced
|
|
:param relation: the relation to save as a weak relation
|
|
:param node: The parent node in which the relation will be created
|
|
:param doc: The document in which the relation will be saved
|
|
|
|
.. versionadded:: 3.16
|
|
%End
|
|
|
|
SIP_PYOBJECT __repr__();
|
|
%MethodCode
|
|
|
|
QString leftIdentifier;
|
|
if ( !sipCpp->referencedLayer().source.isEmpty() )
|
|
leftIdentifier = sipCpp->referencedLayer().source;
|
|
|
|
QString rightIdentifier;
|
|
if ( !sipCpp->referencingLayer().source.isEmpty() )
|
|
rightIdentifier = sipCpp->referencingLayer().source;
|
|
|
|
QString str;
|
|
if ( leftIdentifier.isEmpty() && rightIdentifier.isEmpty() )
|
|
str = QStringLiteral( "<QgsWeakRelation: %1>" ).arg( sipCpp->id() );
|
|
else
|
|
str = QStringLiteral( "<QgsWeakRelation: %1 - %2 -> %3>" ).arg( sipCpp->id(), leftIdentifier, rightIdentifier );
|
|
|
|
sipRes = PyUnicode_FromString( str.toUtf8().constData() );
|
|
%End
|
|
|
|
};
|
|
|
|
/************************************************************************
|
|
* This file has been generated automatically from *
|
|
* *
|
|
* src/core/qgsweakrelation.h *
|
|
* *
|
|
* Do not edit manually ! Edit header and run scripts/sipify.pl again *
|
|
************************************************************************/
|