private boolean initializeDataSource(DataSourceVO<?> vo) {
synchronized (runningDataSources) {
// If the data source is already running, just quit.
if (isDataSourceRunning(vo.getId())) return false;
// Ensure that the data source is enabled.
Assert.isTrue(vo.isEnabled());
// Create and initialize the runtime version of the data source.
DataSourceRT dataSource = vo.createDataSourceRT();
dataSource.initialize();
// Add it to the list of running data sources.
runningDataSources.add(dataSource);
// Add the enabled points to the data source.
List<DataPointVO> dataSourcePoints = new DataPointDao().getDataPoints(vo.getId(), null);
for (DataPointVO dataPoint : dataSourcePoints) {
if (dataPoint.isEnabled()) startDataPoint(dataPoint);
}
LOG.info("Data source '" + vo.getName() + "' initialized");
return true;
}
}
@DwrPermission(admin = true)
public ProcessResult getMaintenanceEvents() {
ProcessResult response = new ProcessResult();
final Translations translations = getTranslations();
List<MaintenanceEventVO> events = new MaintenanceEventDao().getMaintenanceEvents();
Collections.sort(
events,
new Comparator<MaintenanceEventVO>() {
@Override
public int compare(MaintenanceEventVO m1, MaintenanceEventVO m2) {
return m1.getDescription()
.translate(translations)
.compareTo(m1.getDescription().translate(translations));
}
});
response.addData("events", events);
List<IntStringPair> dataSources = new ArrayList<IntStringPair>();
for (DataSourceVO<?> ds : new DataSourceDao().getDataSources())
dataSources.add(new IntStringPair(ds.getId(), ds.getName()));
response.addData("dataSources", dataSources);
return response;
}
@SuppressWarnings("unchecked")
private void updateDataSource(final DataSourceVO<?> vo) {
DataSourceVO<?> old = getDataSource(vo.getId());
_updateDataSource(vo);
AuditEventType.raiseChangedEvent(
AuditEventType.TYPE_DATA_SOURCE, old, (ChangeComparable<DataSourceVO<?>>) vo);
}
public void _updateDataSource(DataSourceVO<?> vo) {
ejt.update(
"update dataSources set xid=?, name=?, dataSourceType=?, data=? where id=?",
new Object[] {
vo.getXid(),
vo.getName(),
vo.getDefinition().getDataSourceTypeName(),
SerializationHelper.writeObject(vo),
vo.getId()
},
new int[] {Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.BLOB, Types.INTEGER});
}
public void saveDataSource(DataSourceVO<?> vo) {
// If the data source is running, stop it.
stopDataSource(vo.getId());
// In case this is a new data source, we need to save to the database first so that it has a
// proper id.
new DataSourceDao().saveDataSource(vo);
// If the data source is enabled, start it.
if (vo.isEnabled()) {
if (initializeDataSource(vo)) startDataSourcePolling(vo);
}
}
private void startDataSourcePolling(DataSourceVO<?> vo) {
DataSourceRT dataSource = getRunningDataSource(vo.getId());
if (dataSource != null) dataSource.beginPolling();
}
public void saveDataSource(final DataSourceVO<?> vo) {
// Decide whether to insert or update.
if (vo.getId() == Common.NEW_ID) insertDataSource(vo);
else updateDataSource(vo);
}
