rdblue commented on a change in pull request #688: [ISSUE #672] Add
SupportsNamespaces for 'HadoopCatalog' and 'HiveCatalog'
URL: https://github.com/apache/incubator-iceberg/pull/688#discussion_r361728706
##########
File path: hive/src/main/java/org/apache/iceberg/hive/HiveCatalog.java
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@@ -188,6 +330,48 @@ protected String defaultWarehouseLocation(TableIdentifier
tableIdentifier) {
tableIdentifier.name());
}
+ public Map<String, String> convertToMetadata(Database database) {
+ Map<String, String> nameMap = Maps.newHashMap();
+
+ nameMap.put("name", database.getName());
+ nameMap.put("location", database.getLocationUri());
+ nameMap.put("comment", database.getDescription());
+ database.getParameters().forEach(nameMap::put);
+
+ return nameMap;
+ }
+
+ public Database convertToDatabase(Namespace namespace, Map<String, String>
meta) {
+ String warehouseLocation = conf.get("hive.metastore.warehouse.dir");
+
+ if (namespace.levels().length != 1) {
+ throw new NoSuchNamespaceException("Namespace does not exist: %s",
namespace);
+ }
+ if (!meta.containsKey("location")) {
+ Preconditions.checkNotNull(warehouseLocation,
+ "Warehouse location is not set: hive.metastore.warehouse.dir=null");
+ }
+
+ Database database = new Database();
+ Map<String, String> parameter = Maps.newHashMap();
+
+ database.setName(namespace.toString());
+ database.setLocationUri(SLASH.join(warehouseLocation,
SLASH.join(namespace.levels())) + ".db");
Review comment:
Since we know that `namespace.levels()` has only one entry, this should be
`namespace.level(0) + ".db"` instead of using `SLASH.join`.
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