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// model.cpp
/* Copyright 2009 10gen
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "pch.h"
#include "model.h"
#include "connpool.h"
namespace mongo {
bool Model::load(BSONObj& query) {
ScopedDbConnection conn( modelServer() );
BSONObj b = conn->findOne(getNS(), query);
conn.done();
if ( b.isEmpty() )
return false;
unserialize(b);
_id = b["_id"].wrap().getOwned();
return true;
}
void Model::remove( bool safe ) {
uassert( 10016 , "_id isn't set - needed for remove()" , _id["_id"].type() );
ScopedDbConnection conn( modelServer() );
conn->remove( getNS() , _id );
string errmsg = "";
if ( safe )
errmsg = conn->getLastError();
conn.done();
if ( safe && errmsg.size() )
throw UserException( 9002 , (string)"error on Model::remove: " + errmsg );
}
void Model::save( bool safe ) {
ScopedDbConnection conn( modelServer() );
BSONObjBuilder b;
serialize( b );
BSONElement myId;
{
BSONObjIterator i = b.iterator();
while ( i.more() ) {
BSONElement e = i.next();
if ( strcmp( e.fieldName() , "_id" ) == 0 ) {
myId = e;
break;
}
}
}
if ( myId.type() ) {
if ( _id.isEmpty() ) {
_id = myId.wrap();
}
else if ( myId.woCompare( _id.firstElement() ) ) {
stringstream ss;
ss << "_id from serialize and stored differ: ";
ss << '[' << myId << "] != ";
ss << '[' << _id.firstElement() << ']';
throw UserException( 13121 , ss.str() );
}
}
if ( _id.isEmpty() ) {
OID oid;
oid.init();
b.appendOID( "_id" , &oid );
BSONObj o = b.obj();
conn->insert( getNS() , o );
_id = o["_id"].wrap().getOwned();
log(4) << "inserted new model " << getNS() << " " << o << endl;
}
else {
if ( myId.eoo() ) {
myId = _id["_id"];
b.append( myId );
}
assert( ! myId.eoo() );
BSONObjBuilder qb;
qb.append( myId );
BSONObj q = qb.obj();
BSONObj o = b.obj();
log(4) << "updated model" << getNS() << " " << q << " " << o << endl;
conn->update( getNS() , q , o , true );
}
string errmsg = "";
if ( safe )
errmsg = conn->getLastError();
conn.done();
if ( safe && errmsg.size() )
throw UserException( 9003 , (string)"error on Model::save: " + errmsg );
}
BSONObj Model::toObject() {
BSONObjBuilder b;
serialize( b );
return b.obj();
}
void Model::append( const char * name , BSONObjBuilder& b ) {
BSONObjBuilder bb( b.subobjStart( name ) );
serialize( bb );
bb.done();
}
} // namespace mongo
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