rllmodule4.out

来自「derby database source code.good for you.」· OUT 代码 · 共 75 行

ij> -- Test whether the RllRAMAccessmanager is working right (ie. forcing row 
-- level locking). 
run resource 'LockTableQuery.subsql';
ij> create view lock_table as
select 
    cast(username as char(8)) as username,
    cast(t.type as char(8)) as trantype,
    cast(l.type as char(8)) as type,
    cast(lockcount as char(3)) as cnt,
    mode,
    cast(tablename as char(12)) as tabname,
    cast(lockname as char(10)) as lockname,
    state,
    status
from 
    new org.apache.derby.diag.LockTable() l  right outer join new org.apache.derby.diag.TransactionTable() t
on l.xid = t.xid where l.tableType <> 'S' and t.type='UserTransaction';
0 rows inserted/updated/deleted
ij> --on l.xid = t.xid where l.tableType <> 'S' or l.tableType is null
-- order by
--     tabname, type desc, mode, cnt, lockname
-- lock table with system catalog locks included.
create view full_lock_table as
select 
    cast(username as char(8)) as username,
    cast(t.type as char(8)) as trantype,
    cast(l.type as char(8)) as type,
    cast(lockcount as char(3)) as cnt,
    mode,
    cast(tablename as char(12)) as tabname,
    cast(lockname as char(10)) as lockname,
    state,
    status
from 
    new org.apache.derby.diag.LockTable() l right outer join new org.apache.derby.diag.TransactionTable() t
on l.xid = t.xid where l.tableType <> 'S' ;
0 rows inserted/updated/deleted
ij> -- lock table with no join.
create view lock_table2 as
select 
    cast(l.xid as char(8)) as xid,
    cast(l.type as char(8)) as type,
    cast(lockcount as char(3)) as cnt,
    mode,
    cast(tablename as char(12)) as tabname,
    cast(lockname as char(10)) as lockname,
    state
from 
    new org.apache.derby.diag.LockTable() l  
where l.tableType <> 'S' ;
0 rows inserted/updated/deleted
ij> -- transaction table with no join.
create view tran_table as
select 
    *
from 
    new org.apache.derby.diag.TransactionTable() t ;
0 rows inserted/updated/deleted
ij> autocommit off;
ij> create table heap_only (a int);
0 rows inserted/updated/deleted
ij> commit;
ij> --------------------------------------------------------------------------------
-- Test insert into empty heap, should just get row lock 
--------------------------------------------------------------------------------
insert into heap_only values (1);
1 row inserted/updated/deleted
ij> select * from lock_table order by tabname, type desc, mode, cnt, lockname;
USERNAME|TRANTYPE|TYPE    |CNT |MODE|TABNAME     |LOCKNAME  |STATE|STATUS  
---------------------------------------------------------------------------
APP     |UserTran|TABLE   |1   |IX  |HEAP_ONLY   |Tablelock |GRANT|ACTIVE  
APP     |UserTran|ROW     |1   |X   |HEAP_ONLY   |(1,7)     |GRANT|ACTIVE  
ij> commit;
ij>