Greg Albiston created JENA-1521:
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Summary: TDB2 backed Datasets cannot be re-opened.
Key: JENA-1521
URL: https://issues.apache.org/jira/browse/JENA-1521
Project: Apache Jena
Issue Type: Bug
Reporter: Greg Albiston
If a Dataset connected to with TDB2Factory.connectDataset() is opened, closed
and then later re-opened it is reported that the Dataset is closed.
Opening, closing and re-opening a Dataset with TDBFactory.createDataset()
causes no issues.
Example code to reproduce:
public void testTDB2OpenClose() {
System.out.println("TDB2 Open Close");
try {
Dataset dataset = TDB2Factory.connectDataset("test_tdb2");
dataset.begin(ReadWrite.WRITE);
Model defaultModel = dataset.getDefaultModel();
defaultModel.add(ResourceFactory.createResource("http://example.org/my#SubjA";),
ResourceFactory.createProperty("http://example.org/my#PropA";),
ResourceFactory.createResource("http://example.org/my#ObjA";));
dataset.commit();
dataset.end();
dataset.close();
Dataset dataset2 = TDB2Factory.connectDataset("test_tdb2");
dataset2.begin(ReadWrite.READ);
Model readModel = dataset2.getDefaultModel();
Iterator<Statement> statements = readModel.listStatements();
while (statements.hasNext()) {
Statement statement = statements.next();
System.out.println(statement);
}
dataset2.end();
dataset2.close();
} catch (Exception ex) {
System.out.println("Exception: " + ex.getMessage());
}
}
public void testTDB1OpenClose() {
System.out.println("TDB1 Open Close");
try {
Dataset dataset = TDBFactory.createDataset("test_tdb1");
dataset.begin(ReadWrite.WRITE);
Model defaultModel = dataset.getDefaultModel();
defaultModel.add(ResourceFactory.createResource("http://example.org/my#SubjA";),
ResourceFactory.createProperty("http://example.org/my#PropA";),
ResourceFactory.createResource("http://example.org/my#ObjA";));
dataset.commit();
dataset.end();
dataset.close();
Dataset dataset2 = TDBFactory.createDataset("test_tdb1");
dataset2.begin(ReadWrite.READ);
Model readModel = dataset2.getDefaultModel();
Iterator<Statement> statements = readModel.listStatements();
while (statements.hasNext()) {
Statement statement = statements.next();
System.out.println(statement);
}
dataset2.end();
dataset2.close();
} catch (Exception ex) {
System.out.println("Exception: " + ex.getMessage());
}
}
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