public static ProxyBackendHandler newInstance()

in proxy/backend/core/src/main/java/org/apache/shardingsphere/proxy/backend/handler/tcl/TCLBackendHandlerFactory.java [58:89]
32 lines of code
12 McCabe index (conditional complexity)

    public static ProxyBackendHandler newInstance(final SQLStatementContext sqlStatementContext, final String sql, final ConnectionSession connectionSession) {
        TCLStatement tclStatement = (TCLStatement) sqlStatementContext.getSqlStatement();
        if (tclStatement instanceof BeginTransactionStatement || tclStatement instanceof StartTransactionStatement) {
            return new TCLBackendHandler(tclStatement, TransactionOperationType.BEGIN, connectionSession);
        }
        if (tclStatement instanceof SetAutoCommitStatement) {
            return new TCLBackendHandler(tclStatement, TransactionOperationType.SET_AUTOCOMMIT, connectionSession);
        }
        if (tclStatement instanceof SavepointStatement) {
            return new TCLBackendHandler(tclStatement, TransactionOperationType.SAVEPOINT, connectionSession);
        }
        if (tclStatement instanceof ReleaseSavepointStatement) {
            return new TCLBackendHandler(tclStatement, TransactionOperationType.RELEASE_SAVEPOINT, connectionSession);
        }
        if (tclStatement instanceof CommitStatement) {
            return new TCLBackendHandler(tclStatement, TransactionOperationType.COMMIT, connectionSession);
        }
        if (tclStatement instanceof RollbackStatement) {
            return ((RollbackStatement) tclStatement).getSavepointName().isPresent()
                    ? new TCLBackendHandler(tclStatement, TransactionOperationType.ROLLBACK_TO_SAVEPOINT, connectionSession)
                    : new TCLBackendHandler(tclStatement, TransactionOperationType.ROLLBACK, connectionSession);
        }
        if (tclStatement instanceof SetTransactionStatement && OperationScope.GLOBAL != ((SetTransactionStatement) tclStatement).getScope()) {
            return new SetTransactionHandler((SetTransactionStatement) tclStatement, connectionSession);
        }
        if (tclStatement instanceof XAStatement) {
            return new XATCLHandler(sqlStatementContext, sql, connectionSession);
        }
        QueryContext queryContext = new QueryContext(sqlStatementContext, sql, Collections.emptyList(), new HintValueContext(), connectionSession.getConnectionContext(),
                ProxyContext.getInstance().getContextManager().getMetaDataContexts().getMetaData());
        return DatabaseConnectorFactory.getInstance().newInstance(queryContext, connectionSession.getDatabaseConnectionManager(), false);
    }