def test_relationById(self):
""" test retrieving relation by id"""
manager = QgsRelationManager()
rel = manager.relation('does not exist')
self.assertFalse(rel.isValid())
# add two relations
rel = self.createRelation()
rel.setId('rel1')
rel.setName('Relation Number One')
assert rel.isValid()
manager.addRelation(rel)
rel = self.createRelation()
rel.setId('rel2')
rel.setName('Relation Number Two')
assert rel.isValid()
manager.addRelation(rel)
rel = manager.relation('does not exist')
self.assertFalse(rel.isValid())
rel = manager.relation('rel1')
self.assertEqual(rel.id(), 'rel1')
rel = manager.relation('rel2')
self.assertEqual(rel.id(), 'rel2')
def test_addRelation(self):
""" test adding relations to a manager """
manager = QgsRelationManager()
relations = manager.relations()
self.assertEqual(len(relations), 0)
rel = self.createRelation()
rel.setRelationId('rel1')
rel.setRelationName('Relation Number One')
assert rel.isValid()
manager.addRelation(rel)
relations = manager.relations()
self.assertEqual(len(relations), 1)
self.assertEqual(relations['rel1'].id(), 'rel1')
rel = self.createRelation()
rel.setRelationId('rel2')
rel.setRelationName('Relation Number Two')
assert rel.isValid()
manager.addRelation(rel)
relations = manager.relations()
self.assertEqual(len(relations), 2)
ids = [r.id() for r in list(relations.values())]
self.assertEqual(set(ids), set(['rel1', 'rel2']))
def test_relationById(self):
""" test retrieving relation by id"""
manager = QgsRelationManager()
rel = manager.relation('does not exist')
self.assertFalse(rel.isValid())
# add two relations
rel = self.createRelation()
rel.setId('rel1')
rel.setName('Relation Number One')
assert rel.isValid()
manager.addRelation(rel)
rel = self.createRelation()
rel.setId('rel2')
rel.setName('Relation Number Two')
assert rel.isValid()
manager.addRelation(rel)
rel = manager.relation('does not exist')
self.assertFalse(rel.isValid())
rel = manager.relation('rel1')
self.assertEqual(rel.id(), 'rel1')
rel = manager.relation('rel2')
self.assertEqual(rel.id(), 'rel2')
def test_polymorphicRelation(self):
# tests addPolymorphicRelation/polymorphicRelation
manager = QgsRelationManager()
# initially the map should be empty
self.assertFalse(manager.polymorphicRelations())
poly_rel1 = self.createPolymorphicRelation()
poly_rel1.setId('poly_rel1')
poly_rel1.setName('Poly Rel 1')
poly_rel2 = self.createPolymorphicRelation()
poly_rel2.setId('poly_rel2')
poly_rel2.setName('Poly Rel 2')
# the relation should be valid now
self.assertTrue(poly_rel1.isValid())
self.assertTrue(poly_rel2.isValid())
manager.addPolymorphicRelation(poly_rel1)
manager.addPolymorphicRelation(poly_rel2)
self.assertFalse(
manager.polymorphicRelation('poly_invalid_id').isValid())
self.assertTrue(manager.polymorphicRelation('poly_rel1').isValid())
self.assertTrue(manager.polymorphicRelation('poly_rel2').isValid())
self.assertTrue(
manager.polymorphicRelation('poly_rel1').hasEqualDefinition(
poly_rel1))
self.assertTrue(
manager.polymorphicRelation('poly_rel2').hasEqualDefinition(
poly_rel2))
def test_addRelation(self):
""" test adding relations to a manager """
manager = QgsRelationManager()
relations = manager.relations()
self.assertEqual(len(relations), 0)
rel = self.createRelation()
rel.setId('rel1')
rel.setName('Relation Number One')
assert rel.isValid()
manager.addRelation(rel)
relations = manager.relations()
self.assertEqual(len(relations), 1)
self.assertEqual(relations['rel1'].id(), 'rel1')
rel = self.createRelation()
rel.setId('rel2')
rel.setName('Relation Number Two')
assert rel.isValid()
manager.addRelation(rel)
relations = manager.relations()
self.assertEqual(len(relations), 2)
ids = [r.id() for r in list(relations.values())]
self.assertEqual(set(ids), set(['rel1', 'rel2']))
def create(layer_wrapper: LayerWrapper, relation_manager: QgsRelationManager,
relation: QgsRelation) -> 'RelationalLayerWrapper':
referencing_layer: QgsVectorLayer = relation.referencingLayer()
try:
other_relation: QgsRelation = [r for r in relation_manager.referencingRelations(referencing_layer)
if r.id() != relation.id()][0]
except KeyError:
raise QaavaLayerError(tr('Relation error'), bar_msg(
tr('Relation {} does not contain referencing another layer', relation.name())))
relation_layer_wrapper = LayerWrapper.from_qgs_layer(referencing_layer)
a_pk: QgsField = referencing_layer.fields().toList()[relation.referencingFields()[0]]
m_pk_a: QgsField = layer_wrapper.get_layer().fields().toList()[relation.referencedFields()[0]]
fw_m_a = FieldWrapper.from_layer_wrapper(relation_layer_wrapper, a_pk, set(), '')
fw_a = FieldWrapper.from_layer_wrapper(layer_wrapper, m_pk_a, set(), '')
other_layer: QgsVectorLayer = other_relation.referencedLayer()
b_pk = other_layer.fields().toList()[other_relation.referencedFields()[0]]
m_pk_b = referencing_layer.fields().toList()[other_relation.referencingFields()[0]]
fw_m_b = FieldWrapper.from_layer_wrapper(relation_layer_wrapper, m_pk_b, set(), '')
other_layer_wrapper = LayerWrapper.from_qgs_layer(other_layer, relation_layer_wrapper, fw_m_b)
fw_b = FieldWrapper.from_layer_wrapper(other_layer_wrapper, b_pk, set(), '')
return RelationalLayerWrapper(referencing_layer.name(), other_layer.name(), layer_wrapper, fw_m_a,
fw_a, fw_m_b, fw_b)
def test_relationByName(self):
""" test retrieving relations by name"""
manager = QgsRelationManager()
rels = manager.relationsByName('does not exist')
self.assertEqual(rels, [])
# add some relations
rel = self.createRelation()
rel.setRelationId('rel1')
rel.setRelationName('my relation')
assert rel.isValid()
manager.addRelation(rel)
rel = self.createRelation()
rel.setRelationId('rel2')
rel.setRelationName('dupe name')
assert rel.isValid()
manager.addRelation(rel)
rel = self.createRelation()
rel.setRelationId('rel3')
rel.setRelationName('dupe name')
assert rel.isValid()
manager.addRelation(rel)
rels = manager.relationsByName('does not exist')
self.assertEqual(rels, [])
rels = manager.relationsByName('my relation')
ids = [r.id() for r in rels]
self.assertEqual(set(ids), set(['rel1']))
# case insensitive
rels = manager.relationsByName('My RelAtion')
ids = [r.id() for r in rels]
self.assertEqual(set(ids), set(['rel1']))
# multiple results
rels = manager.relationsByName('dupe name')
ids = [r.id() for r in rels]
self.assertEqual(set(ids), set(['rel2', 'rel3']))
def test_relationByName(self):
""" test retrieving relations by name"""
manager = QgsRelationManager()
rels = manager.relationsByName('does not exist')
self.assertEqual(rels, [])
# add some relations
rel = self.createRelation()
rel.setId('rel1')
rel.setName('my relation')
assert rel.isValid()
manager.addRelation(rel)
rel = self.createRelation()
rel.setId('rel2')
rel.setName('dupe name')
assert rel.isValid()
manager.addRelation(rel)
rel = self.createRelation()
rel.setId('rel3')
rel.setName('dupe name')
assert rel.isValid()
manager.addRelation(rel)
rels = manager.relationsByName('does not exist')
self.assertEqual(rels, [])
rels = manager.relationsByName('my relation')
ids = [r.id() for r in rels]
self.assertEqual(set(ids), set(['rel1']))
# case insensitive
rels = manager.relationsByName('My RelAtion')
ids = [r.id() for r in rels]
self.assertEqual(set(ids), set(['rel1']))
# multiple results
rels = manager.relationsByName('dupe name')
ids = [r.id() for r in rels]
self.assertEqual(set(ids), set(['rel2', 'rel3']))
def test_setPolymorphicRelations(self):
# tests polymorphicRelations/setPolymorphicRelations
manager = QgsRelationManager()
# initially the map should be empty
self.assertListEqual(list(manager.polymorphicRelations()), [])
poly_rel1 = self.createPolymorphicRelation()
poly_rel1.setId('poly_rel1')
poly_rel1.setName('Poly Rel 1')
poly_rel2 = self.createPolymorphicRelation()
poly_rel2.setId('poly_rel2')
poly_rel2.setName('Poly Rel 2')
poly_rel3 = self.createPolymorphicRelation()
poly_rel3.setId('poly_rel3')
poly_rel3.setName('Poly Rel 3')
# the relation should be valid now
self.assertTrue(poly_rel1.isValid())
self.assertTrue(poly_rel2.isValid())
self.assertTrue(poly_rel3.isValid())
manager.setPolymorphicRelations([poly_rel1, poly_rel2, poly_rel3])
# the relations should match
self.assertListEqual(list(manager.polymorphicRelations()),
['poly_rel1', 'poly_rel2', 'poly_rel3'])
self.assertTrue(manager.polymorphicRelations()['poly_rel1'])
self.assertTrue(manager.polymorphicRelations()['poly_rel2'])
self.assertTrue(manager.polymorphicRelations()['poly_rel3'])
self.assertTrue(manager.polymorphicRelations()
['poly_rel1'].hasEqualDefinition(poly_rel1))
self.assertTrue(manager.polymorphicRelations()
['poly_rel2'].hasEqualDefinition(poly_rel2))
self.assertTrue(manager.polymorphicRelations()
['poly_rel3'].hasEqualDefinition(poly_rel3))
manager.setPolymorphicRelations([poly_rel1])
self.assertListEqual(list(manager.polymorphicRelations()),
['poly_rel1'])
manager.setPolymorphicRelations([])
self.assertListEqual(list(manager.polymorphicRelations()), [])