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JenaConnection.java
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JenaConnection.java
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package cz.cvut.kbss.ontodriver.jena;
import cz.cvut.kbss.ontodriver.Connection;
import cz.cvut.kbss.ontodriver.PreparedStatement;
import cz.cvut.kbss.ontodriver.Statement;
import cz.cvut.kbss.ontodriver.descriptor.AxiomDescriptor;
import cz.cvut.kbss.ontodriver.descriptor.AxiomValueDescriptor;
import cz.cvut.kbss.ontodriver.exception.OntoDriverException;
import cz.cvut.kbss.ontodriver.jena.exception.JenaDriverException;
import cz.cvut.kbss.ontodriver.jena.list.JenaLists;
import cz.cvut.kbss.ontodriver.jena.util.ConnectionListener;
import cz.cvut.kbss.ontodriver.model.Axiom;
import java.net.URI;
import java.util.Collection;
import java.util.List;
import java.util.Objects;
public class JenaConnection implements Connection {
private boolean open;
private boolean autoCommit;
private ConnectionListener listener;
private final JenaAdapter adapter;
JenaConnection(JenaAdapter adapter) {
this.adapter = adapter;
this.open = true;
}
void registerListener(ConnectionListener listener) {
ensureOpen();
this.listener = listener;
}
@Override
public boolean isOpen() {
return open;
}
@Override
public void commit() throws JenaDriverException {
ensureOpen();
if (!autoCommit) {
adapter.commit();
}
}
@Override
public void rollback() {
ensureOpen();
if (!autoCommit) {
adapter.rollback();
}
}
@Override
public void setAutoCommit(boolean autoCommit) {
ensureOpen();
this.autoCommit = autoCommit;
}
@Override
public boolean isAutoCommit() {
ensureOpen();
return autoCommit;
}
private void commitIfAuto() throws JenaDriverException {
if (autoCommit) {
adapter.commit();
}
}
@Override
public Statement createStatement() throws OntoDriverException {
return null;
}
@Override
public PreparedStatement prepareStatement(String sparql) throws OntoDriverException {
return null;
}
@Override
public boolean isConsistent(URI context) throws OntoDriverException {
return false;
}
@Override
public List<URI> getContexts() {
ensureOpen();
return adapter.getContext();
}
@Override
public boolean contains(Axiom<?> axiom, URI context) throws JenaDriverException {
ensureOpen();
Objects.requireNonNull(axiom);
try {
return adapter.contains(axiom, context);
} catch (RuntimeException e) {
throw new JenaDriverException(e);
}
}
@Override
public Collection<Axiom<?>> find(AxiomDescriptor descriptor) throws JenaDriverException {
ensureOpen();
Objects.requireNonNull(descriptor);
try {
return adapter.find(descriptor);
} catch (RuntimeException e) {
throw new JenaDriverException(e);
}
}
@Override
public void persist(AxiomValueDescriptor descriptor) throws JenaDriverException {
ensureOpen();
Objects.requireNonNull(descriptor);
try {
adapter.persist(descriptor);
commitIfAuto();
} catch (RuntimeException e) {
throw new JenaDriverException(e);
}
}
@Override
public URI generateIdentifier(URI classUri) {
ensureOpen();
Objects.requireNonNull(classUri);
return adapter.generateIdentifier(classUri);
}
@Override
public void update(AxiomValueDescriptor descriptor) throws OntoDriverException {
ensureOpen();
Objects.requireNonNull(descriptor);
adapter.update(descriptor);
commitIfAuto();
}
@Override
public void remove(AxiomDescriptor descriptor) throws OntoDriverException {
ensureOpen();
Objects.requireNonNull(descriptor);
try {
adapter.remove(descriptor);
commitIfAuto();
} catch (RuntimeException e) {
throw new JenaDriverException(e);
}
}
@Override
public JenaLists lists() {
ensureOpen();
return new JenaLists(adapter, this::ensureOpen, this::commitIfAuto);
}
@Override
public JenaTypes types() {
ensureOpen();
return new JenaTypes(adapter, this::ensureOpen, this::commitIfAuto);
}
@Override
public JenaProperties properties() {
ensureOpen();
return new JenaProperties(adapter, this::ensureOpen, this::commitIfAuto);
}
@Override
public <T> T unwrap(Class<T> cls) throws OntoDriverException {
ensureOpen();
Objects.requireNonNull(cls);
if (cls.isAssignableFrom(getClass())) {
return cls.cast(this);
}
return adapter.unwrap(cls);
}
@Override
public void close() throws JenaDriverException {
if (!open) {
return;
}
adapter.close();
if (listener != null) {
listener.connectionClosed(this);
}
this.open = false;
}
private void ensureOpen() {
if (!open) {
throw new IllegalStateException("This connection is closed.");
}
}
}