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// query.h
/**
* Copyright (C) 2008 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "../stdafx.h"
#include "../util/message.h"
#include "dbmessage.h"
#include "jsobj.h"
#include "storage.h"
/* db request message format
unsigned opid; // arbitary; will be echoed back
byte operation;
int options;
then for:
dbInsert:
string collection;
a series of JSObjects
dbDelete:
string collection;
int flags=0; // 1=DeleteSingle
JSObject query;
dbUpdate:
string collection;
int flags; // 1=upsert
JSObject query;
JSObject objectToUpdate;
objectToUpdate may include { $inc: <field> } or { $set: ... }, see struct Mod.
dbQuery:
string collection;
int nToSkip;
int nToReturn; // how many you want back as the beginning of the cursor data (0=no limit)
JSObject query;
[JSObject fieldsToReturn]
dbGetMore:
string collection; // redundant, might use for security.
int nToReturn;
int64 cursorID;
dbKillCursors=2007:
int n;
int64 cursorIDs[n];
Note that on Update, there is only one object, which is different
from insert where you can pass a list of objects to insert in the db.
Note that the update field layout is very similar layout to Query.
*/
// struct QueryOptions, QueryResult, QueryResultFlags in:
#include "../client/dbclient.h"
namespace mongo {
// for an existing query (ie a ClientCursor), send back additional information.
QueryResult* getMore(const char *ns, int ntoreturn, long long cursorid);
// returns true if an existing object was updated, false if no existing object was found.
bool updateObjects(const char *ns, BSONObj updateobj, BSONObj pattern, bool upsert, stringstream& ss);
// If justOne is true, deletedId is set to the id of the deleted object.
int deleteObjects(const char *ns, BSONObj pattern, bool justOne, BSONObj *deletedId = 0, bool god=false);
long long runCount(const char *ns, const BSONObj& cmd, string& err);
auto_ptr< QueryResult > runQuery(Message& m, stringstream& ss );
} // namespace mongo
#include "clientcursor.h"
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