Github user jacques-n commented on a diff in the pull request: https://github.com/apache/drill/pull/376#discussion_r53083386 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/store/dfs/FileSelection.java --- @@ -47,6 +49,14 @@ public List<String> files; public final String selectionRoot; + private enum StatusType { + CHECKED_DIRS, // whether we have already checked for directories + HAS_DIRS, // whether directories were found in the selection + EXPANDED_DIRS // whether this selection has been expanded to files + } + + private final BitSet dirStatus; --- End diff -- You took this differently than I meant it. My proposal was that FileSelection has various states: NOT_CHECKED_DIRS => (HAS_DIRS | NO_DIRS) => EXPANDED Doesn this lifecycle describe the state of FileSelection? This way you don't have the multi-state-management problem you currently have below with this kind of construct: fileSel.setExpanded(true); fileSel.setCheckedForDirectories(true); fileSel.setHasDirectories(false); // already expanded For each of the enumerations, we can return the right booleans that you need through enumerator constructors.
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