def __init__(self, classpath=''):
skjar_file = 'SpatialKappa-v2.1.1.jar'
antlrjar_file = 'ant-antlr-3.2.jar'
skjar_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'share', 'SpatialKappa', skjar_file)
antlrjar_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'share', 'SpatialKappa', antlrjar_file)
classpath = os.pathsep.join((classpath, skjar_path, antlrjar_path))
print classpath
self.port = jg.launch_gateway(classpath=classpath, die_on_exit=True)
self.gateway_client = jg.GatewayClient(port=self.port)
self.gateway = jg.JavaGateway(self.gateway_client)
def connect(jclassname, driver_args, jars=None, libs=None):
"""Open a connection to a database using a JDBC driver and return
a Connection instance.
jclassname: Full qualified Java class name of the JDBC driver.
driver_args: Argument or sequence of arguments to be passed to the
Java DriverManager.getConnection method. Usually the
database URL. See
http://docs.oracle.com/javase/6/docs/api/java/sql/DriverManager.html
for more details
jars: Jar filename or sequence of filenames for the JDBC driver
libs: Dll/so filenames or sequence of dlls/sos used as shared
library by the JDBC driver
"""
if _gateway_is_running():
gateway = java_gateway.JavaGateway()
else:
driver_args = [driver_args] if isinstance(driver_args,
str) else driver_args
if jars:
classpath = os.pathsep.join(jars) if isinstance(jars,
list) else jars
else:
classpath = None
if libs:
javaopts = libs if isinstance(libs, list) else [libs]
else:
javaopts = []
gateway = java_gateway.JavaGateway.launch_gateway(port=25333,
classpath=classpath,
javaopts=javaopts,
die_on_exit=True)
java_gateway.java_import(gateway.jvm, 'java.sql.DriverManager')
gateway.jvm.Class.forName(jclassname)
connection = gateway.jvm.DriverManager.getConnection(*driver_args)
if _converters is None:
types_map = {}
for type in gateway.jvm.Class.forName("java.sql.Types").getFields():
types_map[type.getName()] = type.getInt(None)
_init_converters(types_map)
return Connection(connection, _converters)
# coding: utf-8
from py4j import java_collections
from py4j import java_gateway
gtwyCl = java_gateway.GatewayClient()
java_collections.JavaArray("foo", gtwyCl)
# AttributeError: 'NoneType' object has no attribute 'auto_field'
java_gateway.JavaGateway(self,
gateway_client=None,
auto_field=False,
python_proxy_port=25334,
start_callback_server=False,
auto_convert=False,
eager_load=False,
gateway_parameters=None,
callback_server_parameters=None,
python_server_entry_point=None)