/// <summary>
/// Insert a new document to this collection. Document Id must be a new value in collection - Returns document Id
/// </summary>
public virtual BsonValue Insert(T document)
{
if (document == null)
{
throw new ArgumentNullException("document");
}
// set an id value if document object needs
this.Database.Mapper.SetAutoId(document, this.GetBsonCollection());
var doc = this.Database.Mapper.ToDocument(document);
BsonValue id;
// add ObjectId to _id if _id not found
if (!doc.RawValue.TryGetValue("_id", out id))
{
id = doc["_id"] = ObjectId.NewObjectId();
}
// test if _id is a valid type
if (id.IsNull || id.IsMinValue || id.IsMaxValue)
{
throw LiteException.InvalidDataType("_id", id);
}
// serialize object
var bytes = BsonSerializer.Serialize(doc);
this.Database.Transaction.Begin();
try
{
var col = this.GetCollectionPage(true);
// storage in data pages - returns dataBlock address
var dataBlock = this.Database.Data.Insert(col, bytes);
// store id in a PK index [0 array]
var pk = this.Database.Indexer.AddNode(col.PK, id);
// do links between index <-> data block
pk.DataBlock = dataBlock.Position;
dataBlock.IndexRef[0] = pk.Position;
// for each index, insert new IndexNode
foreach (var index in col.GetIndexes(false))
{
var key = doc.Get(index.Field);
var node = this.Database.Indexer.AddNode(index, key);
// point my index to data object
node.DataBlock = dataBlock.Position;
// point my dataBlock
dataBlock.IndexRef[index.Slot] = node.Position;
}
this.Database.Transaction.Commit();
return(id);
}
catch
{
this.Database.Transaction.Rollback();
throw;
}
}
