"Database handles still open to the close environment", after an update of XQuery

Hello

When you run the following Java test code to update an attribute value in a single xml instance:

< village >
< quantity of images = "124" / >
< / village >


Java code:

package info.carrapateira;
com.sleepycat.dbxml import. *;
com.sleepycat.db import. *;
import java. IO;
Import Java.util;

public class DbxmlTest {}

public static random Random = new Random();

Public Shared Sub main (String [] args) {}
EnvironmentConfig envCfg = new EnvironmentConfig();
envCfg.setAllowCreate (true);
envCfg.setInitializeCache (true);
envCfg.setInitializeLocking (true);
envCfg.setInitializeLogging (true);
envCfg.setRunRecovery (true);
envCfg.setTransactional (true);
Environment env = null;
Manager of XmlManager = null;
XmlContainer container = null;
XmlTransaction tx = null;
Results XmlResults = null;
try {}
env = new environment (new File ("c:/home/koen/portugal/projects/carrapateira.info/ www/WEB-INF/dados"), envCfg);
//
Cfg of XmlManagerConfig = new XmlManagerConfig();
cfg.setAdoptEnvironment (true);
Manager = new XmlManager (env, cfg);
//
XmlContainerConfig ctCfg = new XmlContainerConfig();
ctCfg.setTransactional (true);
container = manager.openContainer ("objetos.dbxml", ctCfg);
//
XmlQueryContext ctx = manager.createQueryContext ();
ctx.setDefaultCollection ("objetos.dbxml");
//
TX = manager.createTransaction ();
results = manager.query ("collection () / village/pictures", ctx);
Result XmlValue = null;
Uploading XmlResults = null;
XmlValue attr = null;
While (results.hasNext ()) {}
result = results.next ();
uploading = result.getAttributes ();
While (attrs.hasNext ()) {}
attr = attrs.next ();
System.out.println (attr.getNodeValue ());
}
}
XmlQueryExpression expr = manager.prepare (tx, "replace the value of the @quantity node with '" + random.nextInt (999) + "'", ctx);
results = expr.execute (tx, result, ctx);
While (results.hasNext ()) {}
result = results.next ();
System.out.println (result.getNodeValue ());
}
TX.Commit ();
} catch (Exception e) {}
e.printStackTrace ();
try {}
TX. Abort();
} catch (Exception e1) {}
E1. PrintStackTrace();
}
} {Finally
try {}
Container.Close ();
Manager.Close ();
} catch (Exception e) {}
e.printStackTrace ();
}
}
}
}

the DBXML database has a new value for the amount of update attribute, but the Declaration of manager.close () the dbxml library throws the following error:

Handles the database always opens in the close environment
Handle to the open database: objetos.dbxml/structural_stats
Handle to the open database: objetos.dbxml/secondary_document_statistics_double
Handle to the open database: objetos.dbxml/secondary_document_index_double
Handle to the open database: objetos.dbxml/secondary_document_statistics_string
Handle to the open database: objetos.dbxml/secondary_document_index_string
Handle to the open database: objetos.dbxml/node_nodestorage
Handle to the open database: objetos.dbxml/secondary_document
Handle to the open database: objetos.dbxml/secondary_dictionary
Handle to the open database: objetos.dbxml/primary_dictionary
Handle to the open database: objetos.dbxml/secondary_sequence
Handle to the open database: objetos.dbxml/secondary_configuration
java.lang.IllegalArgumentException: invalid argument
at com.sleepycat.db.internal.db_javaJNI.DbEnv_close0 (Native Method)
at com.sleepycat.db.internal.DbEnv.close0(DbEnv.java:268)
at com.sleepycat.db.internal.DbEnv.close(DbEnv.java:79)
at com.sleepycat.db.Environment.close(Environment.java:141)
at com.sleepycat.dbxml.XmlManager.closeInternal(XmlManager.java:418)
at com.sleepycat.dbxml.XmlManager.delete(XmlManager.java:35)
at com.sleepycat.dbxml.XmlManager.close(XmlManager.java:427)
at info.carrapateira.DbxmlTest.main(DbxmlTest.java:70)
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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)

The database does not seem to be corrupt and everything can be reread, causing new values, but always with this error.

Thank you for checking
Koen

Yes, XmlQueryExpression is also an object that needs to be deleted. But without closing the XmlResults object will lead to memory leaks in the best of cases, then you must close them by all means :-)
There is a little outdated, but useful to the FAQ:
http://www.Oracle.com/technology/products/Berkeley-DB/FAQ/xml_faq.html#16

Vyacheslav

Tags: Database

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