private List doQuery( final SessionImplementor session, final QueryParameters queryParameters, final boolean returnProxies) throws SQLException, HibernateException { final RowSelection selection = queryParameters.getRowSelection(); final int maxRows = hasMaxRows( selection ) ? selection.getMaxRows().intValue() : Integer.MAX_VALUE; final int entitySpan = getEntityPersisters().length; final ArrayList hydratedObjects = entitySpan == 0 ? null : new ArrayList( entitySpan * 10 ); final PreparedStatement st = prepareQueryStatement( queryParameters, false, session ); final ResultSet rs = getResultSet( st, queryParameters.hasAutoDiscoverScalarTypes(), queryParameters.isCallable(), selection, session ); // would be great to move all this below here into another method that could also be used // from the new scrolling stuff. // // Would need to change the way the max-row stuff is handled (ie behind an interface) so // that I could do the control breaking at the means to know when to stop final EntityKey optionalObjectKey = getOptionalObjectKey( queryParameters, session ); final LockMode[] lockModesArray = getLockModes( queryParameters.getLockOptions() ); final boolean createSubselects = isSubselectLoadingEnabled(); final List subselectResultKeys = createSubselects ? new ArrayList() : null; final List results = new ArrayList(); try { handleEmptyCollections( queryParameters.getCollectionKeys(), rs, session ); EntityKey[] keys = new EntityKey[entitySpan]; //we can reuse it for each row if ( log.isTraceEnabled() ) log.trace( "processing result set" ); int count; for ( count = 0; count < maxRows && rs.next(); count++ ) { if ( log.isTraceEnabled() ) log.debug("result set row: " + count); Object result = getRowFromResultSet( rs, session, queryParameters, lockModesArray, optionalObjectKey, hydratedObjects, keys, returnProxies ); results.add( result ); if ( createSubselects ) { subselectResultKeys.add(keys); keys = new EntityKey[entitySpan]; //can't reuse in this case } } if ( log.isTraceEnabled() ) { log.trace( "done processing result set (" + count + " rows)" ); } } finally { session.getBatcher().closeQueryStatement( st, rs ); } initializeEntitiesAndCollections( hydratedObjects, rs, session, queryParameters.isReadOnly( session ) ); if ( createSubselects ) createSubselects( subselectResultKeys, queryParameters, session ); return results; //getResultList(results); }
String sql = some sql that has named parameter = :value SQLQuery sqlQuery = session.createSQLQuery(sql); sqlQuery.setParameter ("value", someValue); List
这将是快速的
String sql = some native sql where parameter = 'actualValue' SQLQuery sqlQuery = session.createSQLQuery(sql); List list = (List)sqlQuery.list();