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https://issues.apache.org/jira/browse/JENA-227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13239726#comment-13239726
]
Petr Chmelar commented on JENA-227:
-----------------------------------
Sorry, this is just for the completeness... when I'm not using cleanDB, just
the ModelRDB.createModel(dbconn, name, properties), which should recreate the
database I get:
Exception in thread "main" com.hp.hpl.jena.shared.JenaException: Exception
during database access
at
com.hp.hpl.jena.db.impl.PSet_TripleStore_RDB.find(PSet_TripleStore_RDB.java:876)
at
com.hp.hpl.jena.db.impl.SpecializedGraph_TripleStore.find(SpecializedGraph_TripleStore.java:142)
at
com.hp.hpl.jena.db.impl.SpecializedGraphBase.find(SpecializedGraphBase.java:28)
at
com.hp.hpl.jena.db.impl.DBPropDatabase.findDBPropNode(DBPropDatabase.java:134)
at com.hp.hpl.jena.db.impl.DBPropDatabase.<init>(DBPropDatabase.java:84)
at
com.hp.hpl.jena.db.impl.DriverRDB.getSystemSpecializedGraph(DriverRDB.java:330)
at com.hp.hpl.jena.db.GraphRDB.<init>(GraphRDB.java:185)
at com.hp.hpl.jena.db.ModelRDB.createModel(ModelRDB.java:158)
at rdf.PersistentModel.create(PersistentModel.java:55)
at rdf.CreateRDFS.main(CreateRDFS.java:52)
Caused by: org.postgresql.util.PSQLException: ERROR: relation "jena_sys_stmt"
does not exist
Pozice: 35
at
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2103)
at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1836)
at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:257)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:512)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:388)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:381)
at com.hp.hpl.jena.db.impl.SQLCache.executeSQL(SQLCache.java:720)
at
com.hp.hpl.jena.db.impl.PSet_TripleStore_RDB.find(PSet_TripleStore_RDB.java:870)
... 9 more
However, I'm moving to SDB, thank you.
> containsModel returns false, which is false
> -------------------------------------------
>
> Key: JENA-227
> URL: https://issues.apache.org/jira/browse/JENA-227
> Project: Apache Jena
> Issue Type: Bug
> Components: RDB
> Environment: Linux 64, PostgreSQL
> Reporter: Petr Chmelar
> Priority: Minor
>
> // load the the driver class
> Class.forName(modelDBdriver);
>
> // create a database connection
> dbconn = new DBConnection(modelDBURL, modelDBuserName,
> modelDBpassWord, modelDBengine);
> // create a model maker with the given connection parameters
> maker = ModelFactory.createModelRDBMaker(dbconn);
>
> // open a previously created named model
> if (dbconn.containsModel(name)) {
> // this d
> System.out.println("Great job, model "+ name +" found
> :)");
> model = ModelRDB.open(dbconn, name);
> }
> else System.out.println("It seems there is no model " +
> name);
>
> // well, I know, it is there...
> model = ModelRDB.open(dbconn, name);
> model.write(System.out); // this is OK
> some time before this, I run, but it did even before:
> // WARNING: this is realy dangerous:
> dbconn.cleanDB();
>
> // create a model maker with the given connection parameters
> maker = ModelFactory.createModelRDBMaker(dbconn);
>
> model = ModelRDB.createModel(dbconn, name, properties);
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