oracle.toplink.essentials.internal.sequencing.DatabaseSessionConnectionHandler Maven / Gradle / Ivy
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package oracle.toplink.essentials.internal.sequencing;
import oracle.toplink.essentials.sessions.Login;
import oracle.toplink.essentials.internal.sessions.DatabaseSessionImpl;
import oracle.toplink.essentials.internal.databaseaccess.Accessor;
import oracle.toplink.essentials.exceptions.ConcurrencyException;
class DatabaseSessionConnectionHandler implements SequencingConnectionHandler {
DatabaseSessionConnectionHandler(DatabaseSessionImpl ownerSession, Login login) {
this.ownerSession = ownerSession;
this.login = login;
accessor = login.buildAccessor();
}
DatabaseSessionImpl ownerSession;
Login login;
Accessor accessor;
boolean isBusy;
public void onConnect() {
if (!isConnected()) {
accessor.connect(login, ownerSession);
}
}
public boolean isConnected() {
return accessor.isConnected();
}
public synchronized Accessor acquireAccessor() {
if (isBusy) {
try {
wait();// Notify is called when connection is released.
} catch (InterruptedException exception) {
throw ConcurrencyException.waitFailureOnSequencingForDatabaseSession(exception);
}
}
isBusy = true;
return accessor;
}
public synchronized void releaseAccessor(Accessor accessor) {
isBusy = false;
notify();
}
public void onDisconnect() {
if (isConnected()) {
accessor.disconnect(ownerSession);
}
}
protected void finalize() throws Throwable {
onDisconnect();
}
}