Hi all,
I'm trying to use JDO in an app engine application on Eclipse. When I
use a web interface I'm able to make it work just fine. But I need to
be able to run it as a java application and when I try I get the
following exception:
java.lang.NullPointerException: No API environment is registered for
this thread.
at
com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppId(DatastoreApiHelper.java:
108)
at
com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppIdNamespace(DatastoreApiHelper.java:
118)
at com.google.appengine.api.datastore.Query.<init>(Query.java:87)
at
org.datanucleus.store.appengine.query.DatastoreQuery.validate(DatastoreQuery.java:
649)
at
org.datanucleus.store.appengine.query.DatastoreQuery.performExecute(DatastoreQuery.java:
215)
at
org.datanucleus.store.appengine.query.JDOQLQuery.performExecute(JDOQLQuery.java:
89)
at org.datanucleus.store.query.Query.executeQuery(Query.java:1489)
at org.datanucleus.store.query.Query.executeWithArray(Query.java:
1371)
at org.datanucleus.store.query.Query.execute(Query.java:1344)
at org.datanucleus.jdo.JDOQuery.execute(JDOQuery.java:221)
at com.eyes.manager.UpdateManager.main(UpdateManager.java:39)
This is my jdeoconfig.xml, which is generated by the Eclipse plugin:
<?xml version="1.0" encoding="utf-8"?>
<jdoconfig xmlns="http://java.sun.com/xml/ns/jdo/jdoconfig";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:noNamespaceSchemaLocation="http://java.sun.com/xml/ns/jdo/
jdoconfig">
<persistence-manager-factory name="transactions-optional">
<property name="javax.jdo.PersistenceManagerFactoryClass"
value="org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFactory"/
>
<property name="javax.jdo.option.ConnectionURL"
value="appengine"/>
<property name="javax.jdo.option.NontransactionalRead"
value="true"/>
<property name="javax.jdo.option.NontransactionalWrite"
value="true"/>
<property name="javax.jdo.option.RetainValues" value="true"/>
<property name="datanucleus.appengine.autoCreateDatastoreTxns"
value="true"/>
</persistence-manager-factory>
</jdoconfig>
Any idea how can I solve this? How do I register the "API
Environment?"
Thanks!
Eyal
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