reschke commented on code in PR #1314:
URL: https://github.com/apache/jackrabbit-oak/pull/1314#discussion_r1497849495
##########
oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/util/Utils.java:
##########
@@ -274,6 +277,61 @@ private static String diagsForEntry(Map.Entry<String,
PropertyStats> member) {
}
}
+ /**
+ * Produce an {@link UpdateOp} suitable for shrinking branch revision
entries for given property in {@link Document}, {@code null} otherwise.
+ *
+ * @param doc document to inspect for repeated branch commits
+ * @param propertName property to check for
+ * @param revisionChecker filter for revisions (for instance, to check for
cluster id)
+ * @return {@link UpdateOp} suitable for shrinking document, {@code null}
otherwise
+ */
+ public static @Nullable UpdateOp getShrinkOp(Document doc, String
propertyName, Predicate<Revision> revisionChecker) {
+ Object t_bc = doc.get("_bc");
+ Object t_property = doc.get(propertyName);
+ if (t_bc instanceof Map && t_property instanceof Map) {
+ @SuppressWarnings("unchecked")
+ Map<Revision, String> _bc = (Map<Revision, String>)t_bc;
+ @SuppressWarnings("unchecked")
+ Map<Revision, String> pMap = (Map<Revision, String>)t_property;
+ List<Revision> revs = new ArrayList<>();
+ for (Map.Entry<Revision, String> en : pMap.entrySet()) {
+ Revision r = en.getKey();
+ if (revisionChecker.apply(r)) {
+ String bcv = _bc.get(r);
+ if ("true".equals(bcv)) {
+ revs.add(r);
+ }
+ }
+ }
+ // sort by age
+ Collections.sort(revs, new Comparator<Revision>() {
Review Comment:
Not in Revision, as far as I can tell. I wanted a comparator that sorts by
clusterId first; we may not need this if we always filter by cluster id though.
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