本文整理汇总了Python中qgis.core.QgsDataSourceUri.setParam方法的典型用法代码示例。如果您正苦于以下问题：Python QgsDataSourceUri.setParam方法的具体用法？Python QgsDataSourceUri.setParam怎么用？Python QgsDataSourceUri.setParam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.QgsDataSourceUri的用法示例。
在下文中一共展示了QgsDataSourceUri.setParam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: _loadWcs
# 需要导入模块: from qgis.core import QgsDataSourceUri [as 别名]
# 或者: from qgis.core.QgsDataSourceUri import setParam [as 别名]
def _loadWcs():
valid = {}
urls = os.getenv(TEST_URLS).split(",")
for url in urls:
try:
url = url.strip() + "/wcs"
uri = QgsDataSourceUri()
uri.setParam('url',url )
uri.setParam("identifier", "testlayer")
layer = QgsRasterLayer(str(uri.encodedUri()), 'testlayer', 'wcs')
valid[url] = layer.isValid()
except:
valid[url] = False
failed = [k for k,v in valid.items() if not v]
if failed:
raise AssertionError("Test failed for the following URLs: " + str(failed))示例2: connect
# 需要导入模块: from qgis.core import QgsDataSourceUri [as 别名]
# 或者: from qgis.core.QgsDataSourceUri import setParam [as 别名]
def connect(self, parent=None):
conn_name = self.connectionName()
settings = QSettings()
settings.beginGroup(u"/{0}/{1}".format(
self.connectionSettingsKey(), conn_name))
if not settings.contains("database"): # non-existent entry?
raise InvalidDataException(
self.tr('There is no defined database connection "{}".'.format(
conn_name)))
from qgis.core import QgsDataSourceUri
uri = QgsDataSourceUri()
settingsList = ["host", "port", "database", "username", "password"]
host, port, database, username, password = [settings.value(x, "", type=str) for x in settingsList]
# get all of the connexion options
useEstimatedMetadata = settings.value(
"estimatedMetadata", False, type=bool)
uri.setParam('userTablesOnly', str(
settings.value("userTablesOnly", False, type=bool)))
uri.setParam('geometryColumnsOnly', str(
settings.value("geometryColumnsOnly", False, type=bool)))
uri.setParam('allowGeometrylessTables', str(
settings.value("allowGeometrylessTables", False, type=bool)))
uri.setParam('onlyExistingTypes', str(
settings.value("onlyExistingTypes", False, type=bool)))
uri.setParam('includeGeoAttributes', str(
settings.value("includeGeoAttributes", False, type=bool)))
settings.endGroup()
uri.setConnection(host, port, database, username, password)
uri.setUseEstimatedMetadata(useEstimatedMetadata)
err = u""
try:
return self.connectToUri(uri)
except ConnectionError as e:
err = str(e)
# ask for valid credentials
max_attempts = 3
for i in range(max_attempts):
(ok, username, password) = QgsCredentials.instance().get(
uri.connectionInfo(False), username, password, err)
if not ok:
return False
uri.setConnection(host, port, database, username, password)
try:
self.connectToUri(uri)
except ConnectionError as e:
if i == max_attempts - 1: # failed the last attempt
raise e
err = str(e)
continue
QgsCredentials.instance().put(
uri.connectionInfo(False), username, password)
return True
return False