ClassCastException extent.close(iterator)

Question

I'm doing something like the following:
Extent ext = commonManager.getExtent(c, includeSubClasses);
Query query = commonManager.newQuery(ext);
Iterator it = ((Collection)query.execute()).iterator();
//iterate over instances
query.close(it);
ext.close(it);
With or without the query.close I get a classcastexception in
ExtentImpl.close: 169
com.solarmetric.kodo.runtime.FatalInternalException:
java.lang.ClassCastException
NestedThrowables:
java.lang.ClassCastException
at com.solarmetric.kodo.runtime.ExtentImpl.close(ExtentImpl.java:169)
This is version 2.5.5. Am I doing something wrong?
Dylan

Answer 1

Dylan-
I believe the offending line is:
ext.close(it);The only Iterators you should pass to Extent.close() are ones that were
created from the Extent.iterator() method, not ones that are created
from query execution.
I think the thing you want to do is:
Extent ext = commonManager.getExtent(c, includeSubClasses);
Query query = commonManager.newQuery(ext);
Collection results = (Collection).query.execute();
Iterator it = results.iterator();
// iterate over instances
query.close(results);
Or, more simply:
Extent ext = commonManager.getExtent(c, includeSubClasses);
Query query = commonManager.newQuery(ext);
Iterator it = ((Collection)query.execute()).iterator();
// iterate over instances
query.closeAll();
In article <bq0e20$50a$[email protected]>, D. Wilson wrote:
I'm doing something like the following:
Extent ext = commonManager.getExtent(c, includeSubClasses);
Query query = commonManager.newQuery(ext);
Iterator it = ((Collection)query.execute()).iterator();
//iterate over instances
query.close(it);
ext.close(it);
With or without the query.close I get a classcastexception in
ExtentImpl.close: 169
com.solarmetric.kodo.runtime.FatalInternalException:
java.lang.ClassCastException
NestedThrowables:
java.lang.ClassCastException
at com.solarmetric.kodo.runtime.ExtentImpl.close(ExtentImpl.java:169)
This is version 2.5.5. Am I doing something wrong?
Dylan
Marc Prud'hommeaux [email protected]
SolarMetric Inc. http://www.solarmetric.com