def __init__(self, connect, driver, user, password,isolation=''):
config_parser = SafeConfigParser()
config_parser.read(PATH_JDBC_CFG)
# since it is impossible to call jpype.isThreadAttachedToJVM() before jpype.startJVM()
# we won't check if JVM is started.
classpath = config_parser.get("JVM", "classpath")
javaHome = config_parser.get("JVM", "java_home")
if (javaHome[0] != '/'):
javaHome = "%s/%s" % (etl_util.get_app_root_path(), javaHome)
args='-Djava.class.path=%s' % classpath
try:
os.environ['JAVA_HOME'] = javaHome
jvm_path = jpype.getDefaultJVMPath()
except TypeError:
logging.error("failed to get default JVM path")
raise
if (jpype.isJVMStarted() == False):
jpype.startJVM(jvm_path, args)
logging.debug("Connecting with %s to %s with user %s" % (driver, connect, user))
self.conn = jaydebeapi.connect(driver, connect, user, password)
#set isolation level
if isolation!='':
if 'mysql' in driver:
sql='SET SESSION TRANSACTION ISOLATION LEVEL %s' % isolation
elif 'teradata' in driver:
sql='SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL %s' % isolation
self._execute(sql)
import os
from ConfigParser import SafeConfigParser
import jpype
import logging
import thread
import etl_util
import modules.r10_jdbc as jaydebeapi
# Allow to have an external test_jdbc.cfg for local platform development
PATH_JDBC_CFG = os.path.join(os.path.expanduser("~"), '.etl', 'jdbc.cfg')
if not os.path.isfile(PATH_JDBC_CFG):
PATH_JDBC_CFG = os.path.join(etl_util.get_app_root_path(), 'conf', 'modules', 'jdbc.cfg')
class JDBCFactory(type):
'''
This class is factory for JDBC objects
JDBCObj
a dictionary of JDBC objects
JDBCObj Key:
(connect, driver, user, password, isolation)
JDBCObj Value:
a JDBC object
Usage of JDBC
Usage1: The isolation remains default.
JDBC(connect, driver, user, password)
In this case, JDBCObj Key is (connect, driver, user, password, '')
