public RevisionList ChangesSince(Int64 lastSequence, ChangesOptions options, RevisionFilter filter) { // http://wiki.apache.org/couchdb/HTTP_database_API#Changes // Translate options to ForestDB: if (options.Descending) { // https://github.com/couchbase/couchbase-lite-ios/issues/641 throw new CouchbaseLiteException(StatusCode.NotImplemented); } var forestOps = C4EnumeratorOptions.DEFAULT; forestOps.flags |= C4EnumeratorFlags.IncludeDeleted | C4EnumeratorFlags.IncludeNonConflicted; if (options.IncludeDocs || options.IncludeConflicts || filter != null) { forestOps.flags |= C4EnumeratorFlags.IncludeBodies; } var changes = new RevisionList(); var e = new CBForestDocEnumerator(Forest, lastSequence, forestOps); foreach (var next in e) { var doc = next.Document; var revs = default(IEnumerable<RevisionInternal>); if (options.IncludeConflicts) { using (var enumerator = new CBForestHistoryEnumerator(doc, true, false)) { var includeBody = forestOps.flags.HasFlag(C4EnumeratorFlags.IncludeBodies); revs = enumerator.Select(x => new RevisionInternal(x.Document, includeBody)).ToList(); } } else { revs = new List<RevisionInternal> { new RevisionInternal(doc, forestOps.flags.HasFlag(C4EnumeratorFlags.IncludeBodies)) }; } foreach (var rev in revs) { Debug.Assert(rev != null); if (filter == null || filter(rev)) { if (!options.IncludeDocs) { rev.SetBody(null); } if(filter == null || filter(rev)) { changes.Add(rev); } } } } if (options.SortBySequence) { changes.SortBySequence(!options.Descending); changes.Limit(options.Limit); } return changes; }
internal RevisionList ChangesSince(long lastSeq, ChangesOptions options, FilterDelegate filter) { // http://wiki.apache.org/couchdb/HTTP_database_API#Changes if (options == null) { options = new ChangesOptions(); } var includeDocs = options.IsIncludeDocs() || (filter != null); var additionalSelectColumns = string.Empty; if (includeDocs) { additionalSelectColumns = ", json"; } var sql = "SELECT sequence, revs.doc_id, docid, revid, deleted" + additionalSelectColumns + " FROM revs, docs " + "WHERE sequence > ? AND current=1 " + "AND revs.doc_id = docs.doc_id " + "ORDER BY revs.doc_id, revid DESC"; var args = lastSeq; Cursor cursor = null; RevisionList changes = null; try { cursor = StorageEngine.RawQuery(sql, CommandBehavior.SequentialAccess, args); cursor.MoveToNext(); changes = new RevisionList(); long lastDocId = 0; while (!cursor.IsAfterLast()) { if (!options.IsIncludeConflicts()) { // Only count the first rev for a given doc (the rest will be losing conflicts): var docNumericId = cursor.GetLong(1); if (docNumericId == lastDocId) { cursor.MoveToNext(); continue; } lastDocId = docNumericId; } var sequence = cursor.GetLong(0); var rev = new RevisionInternal(cursor.GetString(2), cursor.GetString(3), (cursor.GetInt(4) > 0), this); rev.SetSequence(sequence); if (includeDocs) { ExpandStoredJSONIntoRevisionWithAttachments(cursor.GetBlob(5), rev, options.GetContentOptions()); } IDictionary<string, object> paramsFixMe = null; // TODO: these should not be null if (RunFilter(filter, paramsFixMe, rev)) { changes.AddItem(rev); } cursor.MoveToNext(); } } catch (SQLException e) { Log.E(Tag, "Error looking for changes", e); } finally { if (cursor != null) { cursor.Close(); } } if (options.IsSortBySequence()) { changes.SortBySequence(); } changes.Limit(options.GetLimit()); return changes; }
public RevisionList ChangesSince(Int64 lastSequence, ChangesOptions options, RevisionFilter filter) { // http://wiki.apache.org/couchdb/HTTP_database_API#Changes // Translate options to ForestDB: if (options.Descending) { // https://github.com/couchbase/couchbase-lite-ios/issues/641 throw new CouchbaseLiteException(StatusCode.NotImplemented); } var forestOps = C4EnumeratorOptions.DEFAULT; forestOps.flags |= C4EnumeratorFlags.IncludeDeleted | C4EnumeratorFlags.IncludeNonConflicted; if (options.IncludeDocs || options.IncludeConflicts || filter != null) { forestOps.flags |= C4EnumeratorFlags.IncludeBodies; } var changes = new RevisionList(); var e = new CBForestDocEnumerator(Forest, lastSequence, forestOps); foreach (var next in e) { var revs = default(IEnumerable <RevisionInternal>); if (options.IncludeConflicts) { using (var enumerator = new CBForestHistoryEnumerator(next.GetDocument(), true, false)) { var includeBody = forestOps.flags.HasFlag(C4EnumeratorFlags.IncludeBodies); revs = enumerator.Select(x => new RevisionInternal(x.GetDocument(), includeBody)).ToList(); } } else { revs = new List <RevisionInternal> { new RevisionInternal(next.GetDocument(), forestOps.flags.HasFlag(C4EnumeratorFlags.IncludeBodies)) }; } foreach (var rev in revs) { Debug.Assert(rev != null); if (filter == null || filter(rev)) { if (!options.IncludeDocs) { rev.SetBody(null); } if (filter == null || filter(rev)) { changes.Add(rev); } } } } if (options.SortBySequence) { changes.SortBySequence(!options.Descending); changes.Limit(options.Limit); } return(changes); }