internal static async Task <IndexBTreeFileEnumerator <T> > Create(IndexBTreeFile File, IndexRecords RecordHandler)
{
return(new IndexBTreeFileEnumerator <T>()
{
file = File,
recordHandler = RecordHandler,
provider = File.ObjectFile.Provider,
hasCurrent = false,
currentObjectId = Guid.Empty,
current = default,
internal IndexBTreeFileEnumerator(IndexBTreeFile File, IndexRecords RecordHandler)
{
this.file = File;
this.recordHandler = RecordHandler;
this.provider = this.file.ObjectFile.Provider;
this.hasCurrent = false;
this.currentObjectId = Guid.Empty;
this.current = default;
this.currentSerializer = null;
this.timeoutMilliseconds = File.IndexFile.TimeoutMilliseconds;
this.e = new ObjectBTreeFileEnumerator <object>(this.file.IndexFile, RecordHandler);
}
internal IndexBTreeFileEnumerator(IndexBTreeFile File, bool Locked, IndexRecords RecordHandler, BlockInfo StartingPoint)
{
this.file = File;
this.locked = Locked;
this.recordHandler = RecordHandler;
this.provider = this.file.ObjectFile.Provider;
this.hasCurrent = false;
this.currentObjectId = Guid.Empty;
this.current = default(T);
this.currentSerializer = null;
this.timeoutMilliseconds = File.IndexFile.TimeoutMilliseconds;
this.e = new ObjectBTreeFileEnumerator <object>(this.file.IndexFile, Locked, RecordHandler, StartingPoint);
}
/// <summary>
/// This class manages an index file to a <see cref="ObjectBTreeFile"/>.
/// </summary>
/// <param name="FileName">File name of index file.</param>
/// <param name="ObjectFile">Object file storing actual objects.</param>
/// <param name="Provider">Files provider.</param>
/// <param name="FieldNames">Field names to build the index on. By default, sort order is ascending.
/// If descending sort order is desired, prefix the corresponding field name by a hyphen (minus) sign.</param>
internal static async Task <IndexBTreeFile> Create(string FileName, ObjectBTreeFile ObjectFile, FilesProvider Provider,
params string[] FieldNames)
{
IndexBTreeFile Result = new IndexBTreeFile()
{
objectFile = ObjectFile,
collectionName = ObjectFile.CollectionName,
encoding = ObjectFile.Encoding
};
Result.recordHandler = new IndexRecords(Result.collectionName, Result.encoding, Result.objectFile.InlineObjectSizeLimit, FieldNames);
Result.genericSerializer = new GenericObjectSerializer(Result.objectFile.Provider);
Result.indexFile = await ObjectBTreeFile.Create(FileName, Result.collectionName, string.Empty, Result.objectFile.BlockSize,
Result.objectFile.BlobBlockSize, Provider, Result.encoding, Result.objectFile.TimeoutMilliseconds,
Result.objectFile.Encrypted, Result.recordHandler);
Result.recordHandler.Index = Result;
return(Result);
}