cklein05 commented on a change in pull request #428:
URL: https://github.com/apache/tomcat/pull/428#discussion_r655092412
##########
File path: java/org/apache/catalina/realm/DataSourceRealm.java
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@@ -539,6 +612,162 @@ private boolean isRoleStoreDefined() {
}
+ /**
+ * Return the specified user's requested user attributes as a map.
+ *
+ * @param dbConnection The database connection to be used
+ * @param username User name for which to return user attributes
+ *
+ * @return a map containing the specified user's requested user attributes
+ */
+ protected Map<String, Object> getUserAttributesMap(Connection
dbConnection, String username) {
+
+ String preparedAttributes = getUserAttributesStatement(dbConnection);
+ if (preparedAttributes == null || preparedAttributes ==
USER_ATTRIBUTES_NONE_REQUESTED) {
+ // The above reference comparison is intentional.
USER_ATTRIBUTES_NONE_REQUESTED
+ // is a tag object (empty String) to distinguish between null (not
yet
+ // initialized) and empty (no attributes requested).
+ // TODO Could as well be changed to `preparedAttributes.lenghth()
= 0`
+
+ // Return null if no user attributes are requested (or if the
statement was not
+ // yet built successfully)
+ return null;
+ }
+
+ try (PreparedStatement stmt =
dbConnection.prepareStatement(preparedAttributes)) {
+ stmt.setString(1, username);
+
+ try (ResultSet rs = stmt.executeQuery()) {
+
+ if (rs.next()) {
+ Map<String, Object> attrs = new LinkedHashMap<>();
Review comment:
I don't know, but I guess the answer is no. AFAIK, using order
preserving maps is a more recent thing (e. g. Google Chrome preserves insertion
order of JavaScript Objects, which are HashMaps as well. That's also not
required by the ECMA standards, but it's a neat feature, especially with
debugging etc.)
> Maybe we could apply the same behavior.
Why not? But that's always a feature, users can't rely on. In fact, it's
just _nice to have_, However, since `LinkedHashMap`is not much more costly than
a classic `HashMap` (especially with only few entries), there is no pain with
using it.
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