UcanAccess retrieve stored query sql - python-3.x

Question

I'm trying to retrieve the SQL that makes up a stored query inside an Access database.
I'm using a combination of UcanAccess 4.0.2, and jaydebeapi and the ucanaccess console. The ultimate goal is to be able to do the following from a python script with no user intervention.
When UCanAccess loads, it successfully loads the query:
Please, enter the full path to the access file (.mdb or .accdb): /Users/.../SnohomishRiverEstuaryHydrology_RAW.accdb
Loaded Tables:
Sensor Data, Sensor Details, Site Details
Loaded Queries:
Jeff_Test
Loaded Procedures:
Loaded Indexes:
Primary Key on Sensor Data Columns: (ID)
, Primary Key on Sensor Details Columns: (ID)
, Primary Key on Site Details Columns: (ID)
, Index on Sensor Details Columns: (SiteID)
, Index on Site Details Columns: (SiteID)
UCanAccess>
When I run, from the UCanAccess console a query like
SELECT * FROM JEFF_TEST;
I get the expected results of the query.
I tried things including this monstrous query from inside a python script even using the sysSchema=True option (from here: http://www.sqlquery.com/Microsoft_Access_useful_queries.html):
SELECT DISTINCT MSysObjects.Name,
IIf([Flags]=0,"Select",IIf([Flags]=16,"Crosstab",IIf([Flags]=32,"Delete",IIf
([Flags]=48,"Update",IIf([flags]=64,"Append",IIf([flags]=128,"Union",
[Flags])))))) AS Type
FROM MSysObjects INNER JOIN MSysQueries ON MSysObjects.Id =
MSysQueries.ObjectId;
But get an object not found or insufficient privileges error.
At this point, I've tried mdbtools and can successfully retrieve metadata, and data from access. I just need to get the queries out too.
If anyone can point me in the right direction, I'd appreciate it. Windows is not a viable option.
Cheers, Seth
***********************************
* SOLUTION
***********************************
from jpype import *
startJVM(getDefaultJVMPath(), "-ea", "-Djava.class.path=/Users/seth.urion/local/access/UCanAccess-4.0.2-bin/ucanaccess-4.0.2.jar:/Users/seth.urion/local/access/UCanAccess-4.0.2-bin/lib/commons-lang-2.6.jar:/Users/seth.urion/local/access/UCanAccess-4.0.2-bin/lib/commons-logging-1.1.1.jar:/Users/seth.urion/local/access/UCanAccess-4.0.2-bin/lib/hsqldb.jar:/Users/seth.urion/local/access/UCanAccess-4.0.2-bin/lib/jackcess-2.1.6.jar")
conn = java.sql.DriverManager.getConnection("jdbc:ucanaccess:///Users/seth.urion/PycharmProjects/pyAccess/FE_Hall_2010_2016_SnohomishRiverEstuaryHydrology_RAW.accdb")
for query in conn.getDbIO().getQueries():
print(query.getName())
print(query.toSQLString())

Answer 1

If you can find a satisfactory way to call Java methods from within Python then you could use the Jackcess Query#toSQLString() method to extract the SQL for a saved query. For example, I just got this to work under Jython:
from java.sql import DriverManager
def get_query_sql(conn, query_name):
sql = ''
for query in conn.getDbIO().getQueries():
if query.getName() == query_name:
sql = query.toSQLString()
break
return sql
# usage example
if __name__ == '__main__':
conn = DriverManager.getConnection("jdbc:ucanaccess:///home/gord/UCanAccessTest.accdb")
query_name = 'Jeff_Test'
query_sql = get_query_sql(conn, query_name)
if query_sql == '':
print '(Query not found.)'
else:
print 'SQL for query [%s]:' % (query_name)
print
print query_sql
conn.close()
producing
SQL for query [Jeff_Test]:
SELECT Invoice.InvoiceNumber, Invoice.InvoiceDate
FROM Invoice
WHERE (((Invoice.InvoiceNumber)>1));