本文整理汇总了Python中py4j.java_gateway.JavaObject类的典型用法代码示例。如果您正苦于以下问题：Python JavaObject类的具体用法？Python JavaObject怎么用？Python JavaObject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JavaObject类的5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: _ensure_initialized
def _ensure_initialized(cls):
SparkContext._ensure_initialized()
gw = SparkContext._gateway
java_import(gw.jvm, "org.apache.spark.streaming.*")
java_import(gw.jvm, "org.apache.spark.streaming.api.java.*")
java_import(gw.jvm, "org.apache.spark.streaming.api.python.*")
# start callback server
# getattr will fallback to JVM, so we cannot test by hasattr()
if "_callback_server" not in gw.__dict__ or gw._callback_server is None:
gw.callback_server_parameters.eager_load = True
gw.callback_server_parameters.daemonize = True
gw.callback_server_parameters.daemonize_connections = True
gw.callback_server_parameters.port = 0
gw.start_callback_server(gw.callback_server_parameters)
cbport = gw._callback_server.server_socket.getsockname()[1]
gw._callback_server.port = cbport
# gateway with real port
gw._python_proxy_port = gw._callback_server.port
# get the GatewayServer object in JVM by ID
jgws = JavaObject("GATEWAY_SERVER", gw._gateway_client)
# update the port of CallbackClient with real port
jgws.resetCallbackClient(jgws.getCallbackClient().getAddress(), gw._python_proxy_port)
# register serializer for TransformFunction
# it happens before creating SparkContext when loading from checkpointing
cls._transformerSerializer = TransformFunctionSerializer(
SparkContext._active_spark_context, CloudPickleSerializer(), gw)示例2: testJavaErrorGC
def testJavaErrorGC(self):
id = self.doError()
java_object = JavaObject(id, self.gateway._gateway_client)
try:
# Should fail because it should have been garbage collected...
java_object.getCause()
self.fail()
except Py4JError:
self.assertTrue(True)示例3: ensure_callback_server_started
def ensure_callback_server_started(gw):
"""
Start callback server if not already started. The callback server is needed if the Java
driver process needs to callback into the Python driver process to execute Python code.
"""
# getattr will fallback to JVM, so we cannot test by hasattr()
if "_callback_server" not in gw.__dict__ or gw._callback_server is None:
gw.callback_server_parameters.eager_load = True
gw.callback_server_parameters.daemonize = True
gw.callback_server_parameters.daemonize_connections = True
gw.callback_server_parameters.port = 0
gw.start_callback_server(gw.callback_server_parameters)
cbport = gw._callback_server.server_socket.getsockname()[1]
gw._callback_server.port = cbport
# gateway with real port
gw._python_proxy_port = gw._callback_server.port
# get the GatewayServer object in JVM by ID
jgws = JavaObject("GATEWAY_SERVER", gw._gateway_client)
# update the port of CallbackClient with real port
jgws.resetCallbackClient(jgws.getCallbackClient().getAddress(), gw._python_proxy_port)示例4: __init__
def __init__(self, target_id, gateway_client):
JavaObject.__init__(self, target_id, gateway_client)
self._get = get_method(self, "get")示例5: __init__
def __init__(self, target_id, gateway_client):
JavaObject.__init__(self, target_id, gateway_client)
self._add = get_method(self, 'add')
self._clear = get_method(self, 'clear')
self._remove = get_method(self, 'remove')