Status MMAPV1DatabaseCatalogEntry::dropCollection( OperationContext* txn, const StringData& ns ) {
invariant( txn->lockState()->isWriteLocked( ns ) );
_removeFromCache( ns );
NamespaceDetails* details = _namespaceIndex.details( ns );
if ( !details ) {
return Status( ErrorCodes::NamespaceNotFound, str::stream() << "ns not found: " << ns );
}
invariant( details->nIndexes == 0 ); // TODO: delete instead?
invariant( details->indexBuildsInProgress == 0 ); // TODO: delete instead?
_removeNamespaceFromNamespaceCollection( txn, ns );
// free extents
if( !details->firstExtent.isNull() ) {
_extentManager.freeExtents(txn, details->firstExtent, details->lastExtent);
*txn->recoveryUnit()->writing( &details->firstExtent ) = DiskLoc().setInvalid();
*txn->recoveryUnit()->writing( &details->lastExtent ) = DiskLoc().setInvalid();
}
// remove from the catalog hashtable
_namespaceIndex.kill_ns( txn, ns );
return Status::OK();
}
bool QgsOracleTableCache::saveToCache( const QString& connName, CacheFlags flags, const QVector<QgsOracleLayerProperty>& layers )
{
sqlite3* db = _openCacheDatabase();
if ( !db )
return false;
QString tblNameRaw = "oracle_" + connName;
QString tblName = QgsOracleConn::quotedIdentifier( tblNameRaw );
// recreate the cache table
if ( !_removeFromCache( db, connName ) )
{
sqlite3_close( db );
return false;
}
QString sqlCreateTable = QString( "CREATE TABLE %1 (ownername text, tablename text, geometrycolname text, isview int, sql text, pkcols text, geomtypes text, geomsrids text)" ).arg( tblName );
QString sqlInsertToMeta = QString( "INSERT INTO meta_oracle VALUES (%1, %2)" ).arg( QgsOracleConn::quotedValue( connName ) ).arg(( int ) flags );
bool res1 = _executeSqliteStatement( db, sqlCreateTable );
bool res2 = _executeSqliteStatement( db, sqlInsertToMeta );
if ( !res1 || !res2 )
{
sqlite3_close( db );
return false;
}
// insert data
_executeSqliteStatement( db, "BEGIN" );
QString sqlInsert = QString( "INSERT INTO %1 VALUES(?,?,?,?,?,?,?,?)" ).arg( tblName );
sqlite3_stmt* stmtInsert;
if ( sqlite3_prepare_v2( db, sqlInsert.toUtf8().data(), -1, &stmtInsert, 0 ) != SQLITE_OK )
{
sqlite3_close( db );
return false;
}
bool insertOk = true;
Q_FOREACH ( const QgsOracleLayerProperty& item, layers )
{
sqlite3_bind_text( stmtInsert, 1, item.ownerName.toUtf8().data(), -1, SQLITE_TRANSIENT );
sqlite3_bind_text( stmtInsert, 2, item.tableName.toUtf8().data(), -1, SQLITE_TRANSIENT );
sqlite3_bind_text( stmtInsert, 3, item.geometryColName.toUtf8().data(), -1, SQLITE_TRANSIENT );
sqlite3_bind_int( stmtInsert, 4, item.isView );
sqlite3_bind_text( stmtInsert, 5, item.sql.toUtf8().data(), -1, SQLITE_TRANSIENT );
sqlite3_bind_text( stmtInsert, 6, item.pkCols.join( "," ).toUtf8().data(), -1, SQLITE_TRANSIENT );
QStringList geomTypes;
Q_FOREACH ( QGis::WkbType geomType, item.types )
geomTypes.append( QString::number( static_cast<ulong>( geomType ) ) );
sqlite3_bind_text( stmtInsert, 7, geomTypes.join( "," ).toUtf8().data(), -1, SQLITE_TRANSIENT );
QStringList geomSrids;
Q_FOREACH ( int geomSrid, item.srids )
geomSrids.append( QString::number( geomSrid ) );
sqlite3_bind_text( stmtInsert, 8, geomSrids.join( "," ).toUtf8().data(), -1, SQLITE_TRANSIENT );
if ( sqlite3_step( stmtInsert ) != SQLITE_DONE )
insertOk = false;
sqlite3_reset( stmtInsert );
}
Status MMAPV1DatabaseCatalogEntry::_renameSingleNamespace( OperationContext* txn,
const StringData& fromNS,
const StringData& toNS,
bool stayTemp ) {
// some sanity checking
NamespaceDetails* fromDetails = _namespaceIndex.details( fromNS );
if ( !fromDetails )
return Status( ErrorCodes::BadValue, "from namespace doesn't exist" );
if ( _namespaceIndex.details( toNS ) )
return Status( ErrorCodes::BadValue, "to namespace already exists" );
_removeFromCache( fromNS );
// at this point, we haven't done anything destructive yet
// ----
// actually start moving
// ----
// this could throw, but if it does we're ok
_namespaceIndex.add_ns( txn, toNS, fromDetails );
NamespaceDetails* toDetails = _namespaceIndex.details( toNS );
try {
toDetails->copyingFrom(txn,
toNS,
_namespaceIndex,
fromDetails); // fixes extraOffset
}
catch( DBException& ) {
// could end up here if .ns is full - if so try to clean up / roll back a little
_namespaceIndex.kill_ns( txn, toNS );
throw;
}
// at this point, code .ns stuff moved
_namespaceIndex.kill_ns( txn, fromNS );
fromDetails = NULL;
// fix system.namespaces
BSONObj newSpec;
DiskLoc oldSpecLocation;
{
BSONObj oldSpec;
{
RecordStoreV1Base* rs = _getNamespaceRecordStore();
scoped_ptr<RecordIterator> it( rs->getIterator(txn) );
while ( !it->isEOF() ) {
DiskLoc loc = it->getNext();
BSONObj entry = it->dataFor( loc ).toBson();
if ( fromNS == entry["name"].String() ) {
oldSpecLocation = loc;
oldSpec = entry.getOwned();
break;
}
}
}
invariant( !oldSpec.isEmpty() );
invariant( !oldSpecLocation.isNull() );
BSONObjBuilder b;
BSONObjIterator i( oldSpec.getObjectField( "options" ) );
while( i.more() ) {
BSONElement e = i.next();
if ( strcmp( e.fieldName(), "create" ) != 0 ) {
if (stayTemp || (strcmp(e.fieldName(), "temp") != 0))
b.append( e );
}
else {
b << "create" << toNS;
}
}
newSpec = b.obj();
}
_addNamespaceToNamespaceCollection( txn, toNS, newSpec.isEmpty() ? 0 : &newSpec );
_getNamespaceRecordStore()->deleteRecord( txn, oldSpecLocation );
boost::mutex::scoped_lock lk( _collectionsLock );
Entry*& entry = _collections[toNS.toString()];
invariant( entry == NULL );
entry = new Entry();
_fillInEntry_inlock( txn, toNS, entry );
return Status::OK();
}
