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);
}
