Good morning,
I've got a problem using the static method DataContext.createDataContext();
My environment is the following: I've got a library (let's call it
"DataLayer") which use cayenne for the communication towards a single DB.
In this library a class called DbManager create a DataContext in its
constructor using this piece of code:
try {
String pathWithConfigurationFiles = "/home/matteo/config/cayenne";
org.apache.cayenne.conf.Configuration conf = new
FileConfiguration("cayenne.xml");
// Cayenne configuration files can be found at this location
((FileConfiguration) conf).addFilesystemPath(new
File(pathWithConfigurationFiles));
org.apache.cayenne.conf.Configuration.initializeSharedConfiguration(conf);
} catch (Exception e){
e.printStackTrace();
}
// Create a new one
context = DataContext.createDataContext();
This library is used by two different bundles (OSGi Framework); let's call
these bundles Bundle1 and Bundle2.
If I use only one of these bundles all goes perfectly well, but if I try to
start Bundle2 when Bundle1 is already started, the following error appears
and Bundle2 is stopped:
INFO: loading <node name='PacketNode' datasource='PacketNode.driver.xml'
factory='org.apache.cayenne.conf.DriverDataSourceFactory'
schema-update-strategy='org.apache.cayenne.access.dbsync.SkipSchemaUpdateStr
ategy'>.
org.apache.cayenne.ConfigurationException: [v.3.0M6 May 18 2009 07:49:46]
Error during Configuration initialization.
org.apache.cayenne.access.dbsync.SkipSchemaUpdateStrategy cannot be cast to
org.apache.cayenne.access.dbsync.SchemaUpdateStrategy
at
org.apache.cayenne.conf.Configuration.initializeSharedConfiguration(Configur
ation.java:168)
at dbManager.DbManager.<init>(DbManager.java:58)
at
zzz_bundledbquery.DBQueryStarter.start(DBQueryStarter.java:20)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleConte
xtImpl.java:782)
at java.security.AccessController.doPrivileged(Native
Method)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(Bu
ndleContextImpl.java:773)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleConte
xtImpl.java:754)
at
org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.j
ava:352)
at
org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle
.java:280)
at
org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle
.java:272)
at
org.eclipse.osgi.framework.internal.core.FrameworkCommandProvider._start(Fra
meworkCommandProvider.java:253)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.eclipse.osgi.framework.internal.core.FrameworkCommandInterpreter.execute
(FrameworkCommandInterpreter.java:155)
at
org.eclipse.osgi.framework.internal.core.FrameworkConsole.docommand(Framewor
kConsole.java:303)
at
org.eclipse.osgi.framework.internal.core.FrameworkConsole.console(FrameworkC
onsole.java:288)
at
org.eclipse.osgi.framework.internal.core.FrameworkConsole.run(FrameworkConso
le.java:224)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassCastException:
org.apache.cayenne.access.dbsync.SkipSchemaUpdateStrategy cannot be cast to
org.apache.cayenne.access.dbsync.SchemaUpdateStrategy
at
org.apache.cayenne.conf.RuntimeLoadDelegate.shouldLoadDataNode(RuntimeLoadDe
legate.java:303)
at
org.apache.cayenne.conf.ConfigLoader$NodeHandler.init(ConfigLoader.java:345)
at
org.apache.cayenne.conf.ConfigLoader$DomainHandler.startElement(ConfigLoader
.java:222)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(Ab
stractSAXParser.java:501)
at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartEl
ement(XMLNSDocumentScannerImpl.java:400)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$Fragm
entContentDriver.next(XMLDocumentFragmentScannerImpl.java:2747)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocum
entScannerImpl.java:648)
at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSD
ocumentScannerImpl.java:140)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanD
ocument(XMLDocumentFragmentScannerImpl.java:510)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Con
figuration.java:807)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Con
figuration.java:737)
at
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:10
7)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractS
AXParser.java:1205)
at
com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SA
XParserImpl.java:522)
at
org.apache.cayenne.conf.ConfigLoader.loadDomains(ConfigLoader.java:78)
at
org.apache.cayenne.conf.DefaultConfiguration.initialize(DefaultConfiguration
.java:152)
at
org.apache.cayenne.conf.Configuration.initializeSharedConfiguration(Configur
ation.java:159)
... 19 more
What I'm missing?
Thank you very much for the help!!
Cristiano Ghersi
