/// <summary>
/// Drop an index from a collection
/// </summary>
public bool DropIndex(string collection, string field)
{
if (collection.IsNullOrWhiteSpace())
{
throw new ArgumentNullException(nameof(collection));
}
if (field.IsNullOrWhiteSpace())
{
throw new ArgumentNullException(nameof(field));
}
if (field == "_id")
{
throw LiteException.IndexDropId();
}
return(Transaction <bool>(collection, false, (col) =>
{
// no collection, no index
if (col == null)
{
return false;
}
// search for index reference
var index = col.GetIndex(field);
// no index, no drop
if (index == null)
{
return false;
}
_log.Write(Logger.Command, "drop index on '{0}' :: '{1}'", collection, field);
// delete all data pages + indexes pages
_indexer.DropIndex(index);
// clear index reference
index.Clear();
// mark collection page as dirty
_pager.SetDirty(col);
return true;
}));
}