本文整理汇总了Python中qgis.core.QgsRelationManager类的典型用法代码示例。如果您正苦于以下问题：Python QgsRelationManager类的具体用法？Python QgsRelationManager怎么用？Python QgsRelationManager使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了QgsRelationManager类的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_relationById
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')示例2: test_addRelation
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']))示例3: test_relationByName
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']))