/// <summary>
/// Saves strongly typed document to collection.
/// <remarks>If document has property of type <see cref="ObjectId"/> and named 'Id' - it will be set after save</remarks>
/// </summary>
/// <typeparam name="TDocument">Document type</typeparam>
/// <param name="document">Document to save</param>
/// <param name="merge">If true the merge will be performed with old and new objects. Otherwise old object will be replaced</param>
/// <returns>Id of saved document</returns>
public unsafe ObjectId Save <TDocument>(TDocument document, bool merge)
{
using (var stream = Database.StreamPool.GetStream())
using (var writer = new BsonWriter(stream))
{
Serializer.Serialize(writer, document);
ObjectId objectId;
bool saveOk = false;
fixed(byte *streamPointer = &stream.GetBuffer()[0])
{
saveOk = _functions.SaveBson(CollectionHandle, streamPointer, &objectId, merge);
}
if (!saveOk)
{
throw EjdbException.FromDatabase(Database, "Failed to save document");
}
IdHelper <TDocument> .SetId(document, ref objectId);
return(objectId);
}
}
/// <summary>
/// Saves document to collection
/// </summary>
/// <param name="doc">Document to save</param>
/// <param name="merge">If true the merge will be performed with old and new objects. Otherwise old object will be replaced</param>
public unsafe ObjectId Save(BsonDocument doc, bool merge)
{
BsonValue id = doc.GetBsonValue("_id");
ObjectId oiddata = new ObjectId();
if (id != null)
{
oiddata = (ObjectId)id.Value;
}
using (var stream = Database.StreamPool.GetStream())
{
doc.Serialize(stream);
bool saveOk = false;
fixed(byte *streamPointer = &stream.GetBuffer()[0])
{
saveOk = _functions.SaveBson(CollectionHandle, streamPointer, &oiddata, merge);
}
if (saveOk && id == null)
{
doc.SetOID("_id", oiddata);
}
if (!saveOk)
{
throw EjdbException.FromDatabase(Database, "Failed to save Bson");
}
}
return(oiddata);
}
/// <summary>
/// Synchronize database state with disk
/// </summary>
public void Synchronize()
{
if (_functions.Sync(DatabaseHandle))
{
return;
}
throw EjdbException.FromDatabase(this, "Failed to synchronize database");
}
/// <summary>
/// Rollbacks current transaction
/// </summary>
internal void RollbackTransactionInternal()
{
if (_functions.RollbackTransaction(CollectionHandle))
{
return;
}
throw EjdbException.FromDatabase(Database, "Failed to rollback transaction");
}
/// <summary>
/// Commits current transaction
/// </summary>
internal void CommitTransactionInternal()
{
if (_functions.CommitTransaction(CollectionHandle))
{
return;
}
throw EjdbException.FromDatabase(Database, "Failed to commit transaction");
}
/// <summary>
/// Loads JSON object identified by OID from the collection.
/// </summary>
/// <remarks>
/// Returns <c>null</c> if object is not found.
/// </remarks>
/// <param name="id">Id of an object</param>
public void Delete(ObjectId id)
{
if (_functions.DeleteBson(CollectionHandle, ref id))
{
return;
}
throw EjdbException.FromDatabase(Database, "Failed to delete document");
}
/// <summary>
/// Synchronize content of a EJDB collection database with the file on device
/// </summary>
public void Synchronize()
{
if (_functions.SyncCollection(CollectionHandle))
{
return;
}
throw EjdbException.FromDatabase(Database, "Failed to sync collection");
}
internal void ThrowOnError()
{
var errorCode = LastErrorCode;
if (errorCode != 0)
{
EjdbException.FromDatabase(this, string.Empty);
}
}
/// <summary>
/// Begins new transaction
/// </summary>
internal void BeginTransactionInternal()
{
if (_functions.BeginTransaction(CollectionHandle))
{
return;
}
throw EjdbException.FromDatabase(Database, "Failed to begin transaction");
}
/// <summary>
/// Performs provided operations on collection indexes.
/// </summary>
/// <param name="path"></param>
/// <param name="flags"></param>
public unsafe void Index(string path, IndexOperations flags)
{
UnsafeBuffer buffer;
UnsafeBuffer.FillFromString(&buffer, path);
if (_functions.SetIndex(CollectionHandle, &buffer, (int)flags))
{
return;
}
throw EjdbException.FromDatabase(Database, "Failed to perform index operation");
}
///// <summary>
///// Executes EJDB command.
///// </summary>
///// <remarks>
///// Supported commands:
/////
///// 1) Exports database collections data. See ejdbexport() method.
/////
///// "export" : {
///// "path" : string, //Exports database collections data
///// "cnames" : [string array]|null, //List of collection names to export
///// "mode" : int|null //Values: null|`JBJSONEXPORT` See ejdb.h#ejdbexport() method
///// }
/////
///// Command response:
///// {
///// "log" : string, //Diagnostic log about executing this command
///// "error" : string|null, //ejdb error message
///// "errorCode" : int|0, //ejdb error code
///// }
/////
///// 2) Imports previously exported collections data into ejdb.
/////
///// "import" : {
///// "path" : string //The directory path in which data resides
///// "cnames" : [string array]|null, //List of collection names to import
///// "mode" : int|null //Values: null|`JBIMPORTUPDATE`|`JBIMPORTREPLACE` See ejdb.h#ejdbimport() method
///// }
/////
///// Command response:
///// {
///// "log" : string, //Diagnostic log about executing this command
///// "error" : string|null, //ejdb error message
///// "errorCode" : int|0, //ejdb error code
///// }
///// </remarks>
///// <param name="cmd">Command object</param>
///// <returns>Command response.</returns>
////public BsonDocument Command(BsonDocument cmd)
////{
//// CheckDisposed();
//// byte[] cmdata = cmd.ToByteArray();
//// //internal static extern IntPtr _ejdbcommand([In] IntPtr db, [In] byte[] cmd);
//// IntPtr cmdret = _command(this, cmdata);
//// if (cmdret == IntPtr.Zero)
//// {
//// return null;
//// }
//// byte[] bsdata = BsonPtrIntoByteArray(cmdret);
//// if (bsdata.Count == 0)
//// {
//// return null;
//// }
//// BsonIterator it = new BsonIterator(bsdata);
//// return it.ToBsonDocument();
////}
/// <summary>
/// Opens or creates database file depending on <see cref="OpenMode"/>
/// </summary>
/// <param name="dbFilePath">Database filename</param>
/// <param name="openMode"></param>
public unsafe void Open(string dbFilePath, OpenMode openMode = DefaultOpenMode)
{
UnsafeBuffer buffer;
UnsafeBuffer.FillFromString(&buffer, dbFilePath);
bool result = _functions.OpenDatabase(DatabaseHandle, &buffer, openMode);
if (!result)
{
throw EjdbException.FromDatabase(this, "Error on open database");
}
}
