Status Database::renameCollection( const StringData& fromNS, const StringData& toNS,
bool stayTemp ) {
// move data namespace
Status s = _renameSingleNamespace( fromNS, toNS, stayTemp );
if ( !s.isOK() )
return s;
NamespaceDetails* details = _namespaceIndex.details( toNS );
verify( details );
// move index namespaces
string indexName = _name + ".system.indexes";
BSONObj oldIndexSpec;
while( Helpers::findOne( indexName, BSON( "ns" << fromNS ), oldIndexSpec ) ) {
oldIndexSpec = oldIndexSpec.getOwned();
BSONObj newIndexSpec;
{
BSONObjBuilder b;
BSONObjIterator i( oldIndexSpec );
while( i.more() ) {
BSONElement e = i.next();
if ( strcmp( e.fieldName(), "ns" ) != 0 )
b.append( e );
else
b << "ns" << toNS;
}
newIndexSpec = b.obj();
}
DiskLoc newIndexSpecLoc = theDataFileMgr.insert( indexName.c_str(),
newIndexSpec.objdata(),
newIndexSpec.objsize(),
false,
true,
false );
int indexI = details->findIndexByName( oldIndexSpec.getStringField( "name" ) );
IndexDetails &indexDetails = details->idx(indexI);
string oldIndexNs = indexDetails.indexNamespace();
indexDetails.info = newIndexSpecLoc;
string newIndexNs = indexDetails.indexNamespace();
Status s = _renameSingleNamespace( oldIndexNs, newIndexNs, false );
if ( !s.isOK() )
return s;
deleteObjects( indexName.c_str(), oldIndexSpec, true, false, true );
}
Top::global.collectionDropped( fromNS.toString() );
return Status::OK();
}
Status MMAPV1DatabaseCatalogEntry::renameCollection( OperationContext* txn,
const StringData& fromNS,
const StringData& toNS,
bool stayTemp ) {
Status s = _renameSingleNamespace( txn, fromNS, toNS, stayTemp );
if ( !s.isOK() )
return s;
NamespaceDetails* details = _namespaceIndex.details( toNS );
invariant( details );
RecordStoreV1Base* systemIndexRecordStore = _getIndexRecordStore( txn );
scoped_ptr<RecordIterator> it( systemIndexRecordStore->getIterator() );
while ( !it->isEOF() ) {
DiskLoc loc = it->getNext();
const Record* rec = it->recordFor( loc );
BSONObj oldIndexSpec( rec->data() );
if ( fromNS != oldIndexSpec["ns"].valuestrsafe() )
continue;
BSONObj newIndexSpec;
{
BSONObjBuilder b;
BSONObjIterator i( oldIndexSpec );
while( i.more() ) {
BSONElement e = i.next();
if ( strcmp( e.fieldName(), "ns" ) != 0 )
b.append( e );
else
b << "ns" << toNS;
}
newIndexSpec = b.obj();
}
StatusWith<DiskLoc> newIndexSpecLoc =
systemIndexRecordStore->insertRecord( txn,
newIndexSpec.objdata(),
newIndexSpec.objsize(),
-1 );
if ( !newIndexSpecLoc.isOK() )
return newIndexSpecLoc.getStatus();
const string& indexName = oldIndexSpec.getStringField( "name" );
{
// fix IndexDetails pointer
NamespaceDetailsCollectionCatalogEntry ce( toNS, details,
_getIndexRecordStore( txn ), this );
int indexI = ce._findIndexNumber( indexName );
IndexDetails& indexDetails = details->idx(indexI);
*txn->recoveryUnit()->writing(&indexDetails.info) = newIndexSpecLoc.getValue(); // XXX: dur
}
{
// move underlying namespac
string oldIndexNs = IndexDescriptor::makeIndexNamespace( fromNS, indexName );
string newIndexNs = IndexDescriptor::makeIndexNamespace( toNS, indexName );
Status s = _renameSingleNamespace( txn, oldIndexNs, newIndexNs, false );
if ( !s.isOK() )
return s;
}
systemIndexRecordStore->deleteRecord( txn, loc );
}
return Status::OK();
}
