@Override
public ConnectorPartitionResult getPartitions(ConnectorTableHandle tableHandle, TupleDomain<ConnectorColumnHandle> tupleDomain)
{
checkNotNull(tableHandle, "tableHandle is null");
checkNotNull(tupleDomain, "tupleDomain is null");
SchemaTableName tableName = getTableName(tableHandle);
List<FieldSchema> partitionKeys;
Optional<HiveBucket> bucket;
try {
Table table = metastore.getTable(tableName.getSchemaName(), tableName.getTableName());
String protectMode = table.getParameters().get(ProtectMode.PARAMETER_NAME);
if (protectMode != null && getProtectModeFromString(protectMode).offline) {
throw new TableOfflineException(tableName);
}
String prestoOffline = table.getParameters().get(PRESTO_OFFLINE);
if (!isNullOrEmpty(prestoOffline)) {
throw new TableOfflineException(tableName, format("Table '%s' is offline for Presto: %s", tableName, prestoOffline));
}
partitionKeys = table.getPartitionKeys();
bucket = getHiveBucket(table, tupleDomain.extractFixedValues());
}
catch (NoSuchObjectException e) {
throw new TableNotFoundException(tableName);
}
ImmutableMap.Builder<String, ConnectorColumnHandle> partitionKeysByNameBuilder = ImmutableMap.builder();
List<String> filterPrefix = new ArrayList<>();
for (int i = 0; i < partitionKeys.size(); i++) {
FieldSchema field = partitionKeys.get(i);
HiveColumnHandle columnHandle = new HiveColumnHandle(connectorId, field.getName(), i, getSupportedHiveType(field.getType()), -1, true);
partitionKeysByNameBuilder.put(field.getName(), columnHandle);
// only add to prefix if all previous keys have a value
if (filterPrefix.size() == i && !tupleDomain.isNone()) {
Domain domain = tupleDomain.getDomains().get(columnHandle);
if (domain != null && domain.getRanges().getRangeCount() == 1) {
// We intentionally ignore whether NULL is in the domain since partition keys can never be NULL
Range range = Iterables.getOnlyElement(domain.getRanges());
if (range.isSingleValue()) {
Comparable<?> value = range.getLow().getValue();
checkArgument(value instanceof Boolean || value instanceof Slice || value instanceof Double || value instanceof Long,
"Only Boolean, Slice (UTF8 String), Double and Long partition keys are supported");
if (value instanceof Slice) {
filterPrefix.add(((Slice) value).toStringUtf8());
}
else {
filterPrefix.add(value.toString());
}
}
}
}
}
// fetch the partition names
List<String> partitionNames;
try {
if (partitionKeys.isEmpty()) {
partitionNames = ImmutableList.of(UNPARTITIONED_ID);
}
else if (filterPrefix.isEmpty()) {
partitionNames = metastore.getPartitionNames(tableName.getSchemaName(), tableName.getTableName());
}
else {
partitionNames = metastore.getPartitionNamesByParts(tableName.getSchemaName(), tableName.getTableName(), filterPrefix);
}
}
catch (NoSuchObjectException e) {
throw new TableNotFoundException(tableName);
}