@Override
public DatasetMetadata queryMetadata(String uri, String referential) throws IOException {
DatasetMetadata md = new DatasetMetadata();
// Coordinate system
Dataset dataset = findDataset(uri, referential);
if (dataset == null) {
throw new IOException(String.format("Could not find dataset %s", uri));
}
log.trace("Querying spatial axes of {}", dataset);
List<TimeSlice> tss = datasetDao.getTimeSlices(dataset.getId());
GridProjected grid = queryGrid(dataset, tss);
TimeAxis timeAxis = queryTimeAxis(dataset, tss);
md.setCsys(new QueryCoordinateSystem(grid, timeAxis));
// Variable names
log.trace("Querying variable names of {}", dataset);
List<String> bandNames = new ArrayList<>();
for (Band b : datasetDao.getBands(dataset.getId())) {
bandNames.add(b.getName());
}
// In the current RSA, all datasets have coordinate axes (1D variables)
// x, y and time
bandNames.add("time");
bandNames.add("y");
bandNames.add("x");
md.setVariables(bandNames);
return md;
}
ReadWriteLock getLock(Dataset dataset) {
List<TimeSlice> tss = datasetDao.getTimeSlices(dataset.getId());
// Get locks for all timeslices
TimeSliceDbReadWriteLock lock = new TimeSliceDbReadWriteLock(TaskType.Query.toString());
for (TimeSlice ts : tss) lock.getTimeSliceIds().add(ts.getId());
return lock;
}