本文整理汇总了Python中qgis.core.QgsProcessingContext.temporaryLayerStore方法的典型用法代码示例。如果您正苦于以下问题：Python QgsProcessingContext.temporaryLayerStore方法的具体用法？Python QgsProcessingContext.temporaryLayerStore怎么用？Python QgsProcessingContext.temporaryLayerStore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.QgsProcessingContext的用法示例。
在下文中一共展示了QgsProcessingContext.temporaryLayerStore方法的1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: testRun
# 需要导入模块: from qgis.core import QgsProcessingContext [as 别名]
# 或者: from qgis.core.QgsProcessingContext import temporaryLayerStore [as 别名]
def testRun(self):
context = QgsProcessingContext()
# try running an alg using processing.run - ownership of result layer should be transferred back to the caller
res = processing.run('qgis:buffer',
{'DISTANCE': 1, 'INPUT': points(), 'OUTPUT': QgsProcessing.TEMPORARY_OUTPUT},
context=context)
self.assertIn('OUTPUT', res)
# output should be the layer instance itself
self.assertIsInstance(res['OUTPUT'], QgsVectorLayer)
# Python should have ownership
self.assertTrue(sip.ispyowned(res['OUTPUT']))
del context
gc.collect()
self.assertFalse(sip.isdeleted(res['OUTPUT']))
# now try using processing.run with is_child_algorithm = True. Ownership should remain with the context
context = QgsProcessingContext()
res = processing.run('qgis:buffer',
{'DISTANCE': 1, 'INPUT': points(), 'OUTPUT': QgsProcessing.TEMPORARY_OUTPUT},
context=context, is_child_algorithm=True)
self.assertIn('OUTPUT', res)
# output should be a layer string reference, NOT the layer itself
self.assertIsInstance(res['OUTPUT'], str)
layer = context.temporaryLayerStore().mapLayer(res['OUTPUT'])
self.assertIsInstance(layer, QgsVectorLayer)
# context should have ownership
self.assertFalse(sip.ispyowned(layer))
del context
gc.collect()
self.assertTrue(sip.isdeleted(layer))