Github user ctubbsii commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/279#discussion_r126750554
--- Diff:
core/src/main/java/org/apache/accumulo/core/client/impl/Namespaces.java ---
@@ -100,50 +106,150 @@ private static ZooCache getZooCache(Instance
instance) {
return namespaceMap;
}
- public static boolean exists(Instance instance, String namespaceId) {
+ public static boolean exists(Instance instance, Namespace.ID
namespaceId) {
ZooCache zc = getZooCache(instance);
List<String> namespaceIds = zc.getChildren(ZooUtil.getRoot(instance) +
Constants.ZNAMESPACES);
- return namespaceIds.contains(namespaceId);
- }
-
- public static String getNamespaceId(Instance instance, String namespace)
throws NamespaceNotFoundException {
- String id = getNameToIdMap(instance).get(namespace);
- if (id == null)
- throw new NamespaceNotFoundException(null, namespace,
"getNamespaceId() failed to find namespace");
- return id;
+ return namespaceIds.contains(namespaceId.canonicalID());
}
+ /**
+ * @deprecated Do not use - String for namespace ID is not type safe.
Use {@link #getNamespaceName(Instance, Namespace.ID)}
+ */
+ @Deprecated
--- End diff --
Once in `getNameToIdMap` and once when streaming, yeah, but I don't think
it's that big of an issue to transform the internal form to the
API/presentation form. The set of tables is relatively small.
An option which wouldn't require it to iterate twice would be to make
`getNameToIdMap` a generic method, which accepts a `Function` so it can
transform to the value to the requested form:
```java
return Tables.getNameToIdMap(e -> e.canonicalId());
```
Tables.java:
```java
public <T> SortedMap<String, T> getNameToIdMap(Function<Table.ID, ? extends
T> valueConverter) {
// ...
}
```
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