// this is a low level method that doesn't require a MongoServer
// so it can be used while connecting to a MongoServer
internal CommandResult RunCommand(
string collectionName,
QueryFlags queryFlags,
CommandDocument command
)
{
var commandName = command.GetElement(0).Name;
var writerSettings = new BsonBinaryWriterSettings {
GuidRepresentation = GuidRepresentation.Unspecified,
MaxDocumentSize = serverInstance.MaxDocumentSize
};
using (
var message = new MongoQueryMessage(
writerSettings,
collectionName,
queryFlags,
0, // numberToSkip
1, // numberToReturn (must be 1 or -1 for commands)
command,
null // fields
)
) {
SendMessage(message, SafeMode.False);
}
var readerSettings = new BsonBinaryReaderSettings {
GuidRepresentation = GuidRepresentation.Unspecified,
MaxDocumentSize = serverInstance.MaxDocumentSize
};
var reply = ReceiveMessage <BsonDocument>(readerSettings, null);
if (reply.NumberReturned == 0)
{
var message = string.Format("Command '{0}' failed. No response returned.", commandName);
throw new MongoCommandException(message);
}
var commandResult = new CommandResult(command, reply.Documents[0]);
if (!commandResult.Ok)
{
throw new MongoCommandException(commandResult);
}
return(commandResult);
}
/// <summary>
/// 执行数据集命令
/// </summary>
/// <param name="CmdDoc"></param>
/// <param name="mongoCol"></param>
/// <returns></returns>
public static CommandResult ExecuteMongoColCommand(CommandDocument CmdDoc, MongoCollection mongoCol)
{
CommandResult mCommandResult;
try
{
mCommandResult = mongoCol.Database.RunCommand(CmdDoc);
}
catch (MongoCommandException ex)
{
mCommandResult = ex.CommandResult;
}
RunCommandEventArgs e = new RunCommandEventArgs();
e.CommandString = CmdDoc.GetElement(0).Value.ToString();
e.RunLevel = PathLv.DatabaseLV;
e.Result = mCommandResult;
OnCommandRunComplete(e);
return(mCommandResult);
}
// this is a low level method that doesn't require a MongoServer
// so it can be used while connecting to a MongoServer
internal CommandResult RunCommand(
string databaseName,
QueryFlags queryFlags,
CommandDocument command,
bool throwOnError)
{
var commandName = command.GetElement(0).Name;
var writerSettings = new BsonBinaryWriterSettings
{
GuidRepresentation = GuidRepresentation.Unspecified,
MaxDocumentSize = _serverInstance.MaxDocumentSize
};
using (var message = new MongoQueryMessage(writerSettings, databaseName + ".$cmd", queryFlags, 0, 1, command, null))
{
SendMessage(message, null, databaseName); // write concern doesn't apply to queries
}
var readerSettings = new BsonBinaryReaderSettings
{
GuidRepresentation = GuidRepresentation.Unspecified,
MaxDocumentSize = _serverInstance.MaxDocumentSize
};
var reply = ReceiveMessage <BsonDocument>(readerSettings, null);
if (reply.NumberReturned == 0)
{
var message = string.Format("Command '{0}' failed. No response returned.", commandName);
throw new MongoCommandException(message);
}
var commandResult = new CommandResult(command, reply.Documents[0]);
if (throwOnError && !commandResult.Ok)
{
throw new MongoCommandException(commandResult);
}
return(commandResult);
}
// this is a low level method that doesn't require a MongoServer
// so it can be used while connecting to a MongoServer
internal CommandResult RunCommand(
MongoServer server,
string collectionName,
QueryFlags queryFlags,
CommandDocument command
)
{
var commandName = command.GetElement(0).Name;
using (
var message = new MongoQueryMessage(
server,
collectionName,
queryFlags,
0, // numberToSkip
1, // numberToReturn (must be 1 or -1 for commands)
command,
null // fields
)
) {
SendMessage(message, SafeMode.False);
}
var reply = ReceiveMessage <BsonDocument>(server);
if (reply.NumberReturned == 0)
{
var message = string.Format("Command '{0}' failed: no response returned", commandName);
throw new MongoCommandException(message);
}
var commandResult = new CommandResult(command, reply.Documents[0]);
if (!commandResult.Ok)
{
throw new MongoCommandException(commandResult);
}
return(commandResult);
}
/// <summary>
/// 执行数据集命令
/// </summary>
/// <param name="cmdDoc"></param>
/// <param name="mongoCol"></param>
/// <returns></returns>
public static CommandResult ExecuteMongoColCommand(CommandDocument cmdDoc, MongoCollection mongoCol)
{
CommandResult mCommandResult;
try
{
mCommandResult = mongoCol.Database.RunCommand(cmdDoc);
}
catch (MongoCommandException ex)
{
mCommandResult = new CommandResult(ex.Result);
}
var e = new RunCommandEventArgs
{
CommandString = cmdDoc.GetElement(0).Value.ToString(),
RunLevel = EnumMgr.PathLevel.Database,
Result = mCommandResult
};
OnCommandRunComplete(e);
return(mCommandResult);
}