public void ensureFileCacheSynchedFor(Integer changesetNumber, String changesetIdentifier) { if (contentCache.isCached(changesetNumber)) { return; } Map<String, String> baseContent; if (changesetNumber.equals(0)) { baseContent = new HashMap<String, String>(); } else { baseContent = contentCache.readFor(changesetNumber - 1); } if (changesetIdentifier == null) { changesetIdentifier = hgClient.logForRev(String.valueOf(changesetNumber)).getIdentifier(); } contentBuilder.buildContent(changesetIdentifier, baseContent); contentCache.writeFor(changesetNumber, baseContent); }