Complex JDOQL expression does not work. Or maybe I'm doing something stupid?

Hi!
I have several related objects: Customer, Contract and AccessKey.
Each Customer has 1-to-many relationship with Contracts (so it can have
several contracts) and each Contract has 1-to-many relationship with
AccessKeys (so that contract can have several access keys).
I'm trying to obtain customer by property of access key using the
following code:
Query q = pm.newQuery(Customer.class, "contracts.contains(c) && " +
"c.accessKeys.contains(a) && " +
"a.pinCode == pin";
q.declareParameters("String pin");
q.declareVariables("Contract c");
q.declareVariables("AccessKey a");
Collection result = (Collection) q.execute("123");
All these objects (Customer, Contract and AccessKey) are
PersistenceCapable and located in the same package.
In result I get the following exception:
javax.jdo.JDOUserException: The field "c" of type "class
net.xtrim.crm.customer.object.Customer" does not exist or is not persistent.
     at
com.solarmetric.kodo.impl.jdbc.runtime.JDBCQuery.getExpression(JDBCQuery.java:181)
     at com.solarmetric.kodo.query.QueryImpl.executeWithMap(QueryImpl.java:787)
     at
com.solarmetric.kodo.query.QueryImpl.executeWithArray(QueryImpl.java:668)
     at com.solarmetric.kodo.query.QueryImpl.execute(QueryImpl.java:609)
What's wrong with such query? Maybe the problem is that I'm trying to
navigate through the field of the object obtained from the collection of
source object?
Thank you in advance.
Best regards,
Alexey Maslov

Variable and Parameter declarations are a one-time deal:
// note the ; seperator
q.declareVariables ("Contract c; AccessKey a");
// note the , separator
q.declareParameters ("String pin, String forExample");
So when you declare the access key variable, the query "forgets" about
c, and expects it to be a field, and no longer a variable.
Hope that solves your problem!
Alexey Maslov wrote:
Hi!
I have several related objects: Customer, Contract and AccessKey. Each
Customer has 1-to-many relationship with Contracts (so it can have
several contracts) and each Contract has 1-to-many relationship with
AccessKeys (so that contract can have several access keys).
I'm trying to obtain customer by property of access key using the
following code:
Query q = pm.newQuery(Customer.class, "contracts.contains(c) && " +
"c.accessKeys.contains(a) && " +
"a.pinCode == pin";
q.declareParameters("String pin");
q.declareVariables("Contract c");
q.declareVariables("AccessKey a");
Collection result = (Collection) q.execute("123");
All these objects (Customer, Contract and AccessKey) are
PersistenceCapable and located in the same package.
In result I get the following exception:
javax.jdo.JDOUserException: The field "c" of type "class
net.xtrim.crm.customer.object.Customer" does not exist or is not
persistent.
at
com.solarmetric.kodo.impl.jdbc.runtime.JDBCQuery.getExpression(JDBCQuery.java:181)
at
com.solarmetric.kodo.query.QueryImpl.executeWithMap(QueryImpl.java:787)
at
com.solarmetric.kodo.query.QueryImpl.executeWithArray(QueryImpl.java:668)
at com.solarmetric.kodo.query.QueryImpl.execute(QueryImpl.java:609)
What's wrong with such query? Maybe the problem is that I'm trying to
navigate through the field of the object obtained from the collection of
source object?
Thank you in advance.
Best regards,
Alexey Maslov
Stephen Kim
[email protected]
SolarMetric, Inc.
http://www.solarmetric.com

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