Honor CLASSPATH environment variable.

README.rst

@@ -60,9 +60,12 @@ class. Then you can supply a single argument or a sequence of
 arguments that are internally passed to the Java
 ``DriverManager.getConnection`` method. Usually this is the JDBC
 connection URL. See the Javadoc of ``DriverManager`` class for
-details. As the next parameter you can optionally specify the
+details.
+
+As the next parameter to ``connect`` you can optionally specify the
 jar-Files of the driver if your classpath isn't set up sufficiently
-yet.
+yet. The classpath set in ``CLASSPATH`` environment variable will be
+honored. See the documentation of your Java runtime environment.
 
 Here is an example:
 
@@ -81,26 +84,12 @@ Here is an example:
 >>> curs.fetchall()
 [(1, u'John')]
 
-You probably have to configure Jython or JPype to actually be able to
-access the database driver's jar files. If I want to connect to a HSQL
-in memory database on my Ubuntu machine I'm starting Python by running ::
+If you're having trouble getting this work check if your ``JAVA_HOME``
+environmentvariable is set correctly. For example I have to set it on
+my Ubuntu machine like this ::
 
     $ JAVA_HOME=/usr/lib/jvm/java-6-openjdk python
 
-Now I have to configure JPype
-
->>> import jpype
->>> jar = r'/path/to/my/driver/hsqldb.jar'
->>> args='-Djava.class.path=%s' % jar
->>> jvm_path = jpype.getDefaultJVMPath()
->>> jpype.startJVM(jvm_path, args)
-
-or in Jython I have to
-
->>> jar = '/path/to/my/driver/hsqldb.jar'
->>> import sys
->>> sys.path.append(jar)
-
 Supported databases
 ===================
 
@@ -169,6 +158,8 @@ Changelog
 
   - Set ``.rowcount`` properly.
 
+  - Honor ``CLASSPATH`` if used in JPype mode.
+
 - 0.1.3
 
   - Fixed DB-API_ violation: Use ``curs.execute('foo ?', (bar, baz))``

src/jaydebeapi/dbapi2.py

@@ -19,6 +19,7 @@
 
 import datetime
 import exceptions
+import glob
 import os
 import time
 import re
@@ -84,9 +85,13 @@ def _jdbc_connect_jpype(jclassname, jars, libs, *driver_args):
     import jpype
     if not jpype.isJVMStarted():
         args = []
+        class_path = []
         if jars:
-            class_path = os.path.pathsep.join(jars)
-            args.append('-Djava.class.path=%s' % class_path)
+            class_path.extend(jars)
+        class_path.extend(_get_classpath())
+        if class_path:
+            args.append('-Djava.class.path=%s' %
+                        os.path.pathsep.join(class_path))
         if libs:
             # path to shared libraries
             libs_path = os.path.pathsep.join(libs)
@@ -111,6 +116,25 @@ def _jdbc_connect_jpype(jclassname, jars, libs, *driver_args):
     jpype.JClass(jclassname)
     return jpype.java.sql.DriverManager.getConnection(*driver_args)
 
+def _get_classpath():
+    """Extract CLASSPATH from system environment as JPype doesn't seem
+    to respect that variable.
+    """
+    try:
+        orig_cp = os.environ['CLASSPATH']
+    except KeyError:
+        return []
+    expanded_cp = []
+    for i in orig_cp.split(os.path.pathsep):
+        expanded_cp.extend(_jar_glob(i))
+    return expanded_cp
+
+def _jar_glob(item):
+    if item.endswith('*'):
+        return glob.glob('%s.[jJ][aA][rR]' % item)
+    else:
+        return [item]
+
 def _prepare_jpype():
     global _jdbc_connect
     _jdbc_connect = _jdbc_connect_jpype

src/test/test_integration.py

@@ -25,42 +25,11 @@ import threading
 
 import unittest2 as unittest
 
-this_dir = os.path.dirname(os.path.abspath(__file__))
-
-def jar(jar_file):
-    return os.path.abspath(os.path.join(this_dir, '..', '..', 'build', 'lib',
-                                        jar_file))
-
-_DRIVERS = {
-    #http://bitbucket.org/xerial/sqlite-jdbc
-    'sqlite_xerial': ( 'org.sqlite.JDBC', 'jdbc:sqlite::memory:',
-                       jar('sqlite-jdbc-3.7.2.jar'), None),
-    # http://hsqldb.org/
-    'hsqldb': ( 'org.hsqldb.jdbcDriver', ['jdbc:hsqldb:mem:.', 'SA', ''],
-                jar('hsqldb.jar'), None),
-    'db2jcc': ( 'com.ibm.db2.jcc.DB2Driver',
-                ['jdbc:db2://4.100.73.81:50000/db2t', 'user', 'passwd'],
-                jar('jarfile.jar'), None),
-    # driver from http://www.ch-werner.de/javasqlite/ seems to be
-    # crap as it returns decimal values as VARCHAR type
-    'sqlite_werner': ( 'SQLite.JDBCDriver', 'jdbc:sqlite:/:memory:',
-                       jar('sqlite.jar'), None),
-    # Oracle Thin Driver
-    'oracle_thin': ('oracle.jdbc.OracleDriver',
-                    ['jdbc:oracle:thin:@//hh-cluster-scan:1521/HH_TPP',
-                     'user', 'passwd'],
-                    jar('jarfile.jar'), None)
-    }
+_THIS_DIR = os.path.dirname(os.path.abspath(__file__))
 
 def is_jython():
     return sys.platform.lower().startswith('java')
 
-def driver_name():
-    try:
-        return os.environ['INTEGRATION_TEST_DRIVER']
-    except KeyError:
-        return 'sqlite_xerial'
-
 class IntegrationTest(unittest.TestCase):
 
     def sql_file(self, filename):
@@ -89,27 +58,37 @@ class IntegrationTest(unittest.TestCase):
         return sqlite3, sqlite3.connect(':memory:')
 
     def connect(self):
-        driver = driver_name()
-        driver_class, driver_args, driver_jars, driver_libs = _DRIVERS[driver]
-        conn = jaydebeapi.connect(driver_class, driver_args, driver_jars,
-                                  driver_libs)
+        #http://bitbucket.org/xerial/sqlite-jdbc
+        # sqlite-jdbc-3.7.2.jar
+        driver, driver_args = 'org.sqlite.JDBC', 'jdbc:sqlite::memory:'
+        # http://hsqldb.org/
+        # hsqldb.jar
+        #driver, driver_args = 'org.hsqldb.jdbcDriver', ['jdbc:hsqldb:mem:.',
+        #                                                'SA', '']
+        # db2jcc
+        # driver, driver_args = 'com.ibm.db2.jcc.DB2Driver', \
+        #    ['jdbc:db2://4.100.73.81:50000/db2t', 'user', 'passwd']
+        # driver from http://www.ch-werner.de/javasqlite/ seems to be
+        # crap as it returns decimal values as VARCHAR type
+        # sqlite.jar
+        # driver, driver_args = 'SQLite.JDBCDriver', 'jdbc:sqlite:/:memory:'
+        # Oracle Thin Driver
+        # driver, driver_args = 'oracle.jdbc.OracleDriver', \
+        #     ['jdbc:oracle:thin:@//hh-cluster-scan:1521/HH_TPP',
+        #      'user', 'passwd']
+        conn = jaydebeapi.connect(driver, driver_args)
         return jaydebeapi, conn
 
     def _driver_specific_sql(self, data_file):
-        driver = driver_name()
-        sql_file = os.path.join(this_dir, 'data', '%s_%s.sql' % (data_file,
-                                                                 driver))
         if os.path.exists(sql_file):
             return sql_file
         else:
-            return os.path.join(this_dir, 'data', '%s.sql' % data_file)
+            return os.path.join(_THIS_DIR, 'data', '%s.sql' % data_file)
 
     def setUp(self):
         (self.dbapi, self.conn) = self.connect() 
-        create_sql = self._driver_specific_sql('create')
-        self.sql_file(create_sql)
-        insert_sql = self._driver_specific_sql('insert')
-        self.sql_file(insert_sql)
+        self.sql_file(os.path.join(_THIS_DIR, 'data', 'create.sql'))
+        self.sql_file(os.path.join(_THIS_DIR, 'data', 'insert.sql'))
 
     def tearDown(self):
         cursor = self.conn.cursor()