thecoop commented on code in PR #14482:
URL: https://github.com/apache/lucene/pull/14482#discussion_r2059809065
##########
lucene/core/src/java/org/apache/lucene/store/Directory.java:
##########
@@ -79,6 +83,31 @@ public abstract class Directory implements Closeable {
*/
public abstract long fileLength(String name) throws IOException;
+ protected void validateIOContext(IOContext context) {
+ Map<Class<? extends IOContext.FileOpenHint>, List<IOContext.FileOpenHint>>
hintClasses =
+
context.hints().stream().collect(Collectors.groupingBy(IOContext.FileOpenHint::getClass));
+
+ // there should only be one of FileType, FileData, DataAccess
+ List<IOContext.FileOpenHint> fileTypes =
+ hintClasses.getOrDefault(FileTypeHint.class, List.of());
+ if (fileTypes.size() > 1) {
+ throw new IllegalArgumentException("Multiple file type hints specified:
" + fileTypes);
+ }
+ List<IOContext.FileOpenHint> fileData =
hintClasses.getOrDefault(FileDataHint.class, List.of());
+ if (fileData.size() > 1) {
+ throw new IllegalArgumentException("Multiple file data hints specified:
" + fileData);
+ }
+ List<IOContext.FileOpenHint> dataAccess =
+ hintClasses.getOrDefault(DataAccessHint.class, List.of());
+ if (dataAccess.size() > 1) {
+ throw new IllegalArgumentException("Multiple data access hints
specified: " + dataAccess);
+ }
+ }
+
+ protected ReadAdvice toReadAdvice(IOContext context) {
Review Comment:
I've been looking at trying to push `ReadAdvice` into `MMapDirectory`
completely - the complication is `SerialIOCountingDirectory`, which uses
`ReadAdvice` to infer readahead. Maybe best to look at that in more detail in a
later PR. Changing that will let us remove `ReadAdvice` from `Directory`
completely
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org
For additional commands, e-mail: issues-h...@lucene.apache.org
