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JenaAdapter.java
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JenaAdapter.java
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package cz.cvut.kbss.ontodriver.jena;
import cz.cvut.kbss.ontodriver.descriptor.AxiomValueDescriptor;
import cz.cvut.kbss.ontodriver.jena.connector.StorageConnector;
import cz.cvut.kbss.ontodriver.model.Assertion;
import cz.cvut.kbss.ontodriver.util.Transaction;
import org.apache.jena.rdf.model.*;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
/**
* Transformations between OntoDriver API-based values and Jena-based ones.
* <p>
* Implementation notes:
* <ul>
* <li>Datatype literal types are based on Jena's mapping, as described in a table at <a href="https://jena.apache.org/documentation/notes/typed-literals.html">https://jena.apache.org/documentation/notes/typed-literals.html</a></li>
* </ul>
*/
class JenaAdapter {
private final Transaction transaction = new Transaction();
private final StorageConnector connector;
JenaAdapter(StorageConnector connector) {
this.connector = connector;
}
void commit() {
}
void rollback() {
}
void persist(AxiomValueDescriptor descriptor) {
beginTransactionIfNotActive();
new AxiomSaver(connector).saveAxioms(descriptor);
}
private void beginTransactionIfNotActive() {
if (!transaction.isActive()) {
connector.begin();
transaction.begin();
}
}
}