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