本文整理汇总了Python中qgis.core.QgsVectorLayerUtils.createFeatures方法的典型用法代码示例。如果您正苦于以下问题：Python QgsVectorLayerUtils.createFeatures方法的具体用法？Python QgsVectorLayerUtils.createFeatures怎么用？Python QgsVectorLayerUtils.createFeatures使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类qgis.core.QgsVectorLayerUtils的用法示例。
在下文中一共展示了QgsVectorLayerUtils.createFeatures方法的2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_create_nulls_and_defaults
# 需要导入模块: from qgis.core import QgsVectorLayerUtils [as 别名]
# 或者: from qgis.core.QgsVectorLayerUtils import createFeatures [as 别名]
def test_create_nulls_and_defaults(self):
"""Test bug #21304 when pasting features from another layer and default values are not honored"""
vl = createLayerWithOnePoint()
vl.setDefaultValueDefinition(1, QgsDefaultValue('300'))
features_data = []
context = vl.createExpressionContext()
features_data.append(QgsVectorLayerUtils.QgsFeatureData(QgsGeometry.fromWkt('Point (7 44)'), {0: 'test_1', 1: None}))
features_data.append(QgsVectorLayerUtils.QgsFeatureData(QgsGeometry.fromWkt('Point (7 45)'), {0: 'test_2', 1: QVariant()}))
features_data.append(QgsVectorLayerUtils.QgsFeatureData(QgsGeometry.fromWkt('Point (7 46)'), {0: 'test_3', 1: QVariant(QVariant.Int)}))
features_data.append(QgsVectorLayerUtils.QgsFeatureData(QgsGeometry.fromWkt('Point (7 46)'), {0: 'test_4'}))
features = QgsVectorLayerUtils.createFeatures(vl, features_data, context)
for f in features:
self.assertEqual(f.attributes()[1], 300, f.id())
vl = createLayerWithOnePoint()
vl.setDefaultValueDefinition(0, QgsDefaultValue("'my_default'"))
features_data = []
context = vl.createExpressionContext()
features_data.append(QgsVectorLayerUtils.QgsFeatureData(QgsGeometry.fromWkt('Point (7 44)'), {0: None}))
features_data.append(QgsVectorLayerUtils.QgsFeatureData(QgsGeometry.fromWkt('Point (7 45)'), {0: QVariant()}))
features_data.append(QgsVectorLayerUtils.QgsFeatureData(QgsGeometry.fromWkt('Point (7 46)'), {0: QVariant(QVariant.String)}))
features_data.append(QgsVectorLayerUtils.QgsFeatureData(QgsGeometry.fromWkt('Point (7 46)'), {}))
features = QgsVectorLayerUtils.createFeatures(vl, features_data, context)
for f in features:
self.assertEqual(f.attributes()[0], 'my_default', f.id())示例2: test_create_multiple_unique_constraint
# 需要导入模块: from qgis.core import QgsVectorLayerUtils [as 别名]
# 或者: from qgis.core.QgsVectorLayerUtils import createFeatures [as 别名]
def test_create_multiple_unique_constraint(self):
"""Test create multiple features with unique constraint"""
vl = createLayerWithOnePoint()
vl.setFieldConstraint(1, QgsFieldConstraints.ConstraintUnique)
features_data = []
context = vl.createExpressionContext()
for i in range(2):
features_data.append(QgsVectorLayerUtils.QgsFeatureData(QgsGeometry.fromWkt('Point (7 44)'), {0: 'test_%s' % i, 1: 123}))
features = QgsVectorLayerUtils.createFeatures(vl, features_data, context)
self.assertEqual(features[0].attributes()[1], 124)
self.assertEqual(features[1].attributes()[1], 125)