SharedProperty.canUserEdit is always FALSE
im successfully creating a session like this:
_authenticator = new AdobeHSAuthenticator();
_authenticator.addEventListener(AuthenticationEvent.AUTHENTICATION_FAILURE, _onAuthenticationError);
_authenticator.addEventListener(AuthenticationEvent.AUTHENTICATION_SUCCESS, _onAuthenticationSuccess);
_connectSession = new ConnectSession();
_connectSession.addEventListener(SessionEvent.SYNCHRONIZATION_CHANGE, _onConnectSessionSync);
_connectSession.roomManager.addEventListener(RoomManagerEvent.ROOM_STATE_CHANGE, _onConnectSessionRoomStateChange);
_connectSession.authenticator = _authenticator;
then once its sync'ed i'm doing this:
someProp = new SharedProperty();
someProp.sharedID = "sharedTranscriptID";
someProp.connectSession = _connectSession;
someProp.subscribe();
someProp.addEventListener(CollectionNodeEvent.SYNCHRONIZATION_CHANGE, _onSomePropSync);
someProp.addEventListener(CollectionNodeEvent.MY_ROLE_CHANGE, _onSomePropCanEdit);
if (localUser.role == UserRoles.OWNER) someProp.allowUserToEdit(localUser.userID);
localUser is just the chat OWNER's UserDescription. it doesn't matter how many events i listen to or where or when i call:
_transcriptID.allowUserToEdit(localUser.userID);
the result is always the same: SharedProperty.canUserEdit is always FALSE.
i'm going to use a SharedCollection because i know i can just do 'addItemAt' and it'll just work, until/unless someone can suggest quite why SharedProperty.canUserEdit is always FALSE.
Hi,
Thanks for letting us know. This was indeed a bug on our side which I have fixed now, and it will be up updated in the next drop. If you are linking the source, these are the changes you need to do.
The functions that needs to be updated in SharedProperty are
* Determines whether the specified user can edit the property.
* @param p_userID The user to query regarding whether they can edit.
public function canUserEdit(p_userID:String):Boolean
return (_collectionNode.canUserPublish(p_userID,_nodeNameText));
* Allows the current user with an owner role to grant the specified user
* the ability to edit the property.
* @param p_userID The userID of the user being granted editing privileges.
public function allowUserToEdit(p_userID:String):void
// If I can't configure, cancel.
if(!_collectionNode.canUserConfigure(userManager.myUserID,_nodeNameText)){
return;
_collectionNode.setUserRole(p_userID, UserRoles.PUBLISHER, _nodeNameText);
Thanks again. We depend on your feedbacks for improving our framework.
Regards
Hironmay Basu
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</sun-web-app>Hi,
Thanks for letting us know. This was indeed a bug on our side which I have fixed now, and it will be up updated in the next drop. If you are linking the source, these are the changes you need to do.
The functions that needs to be updated in SharedProperty are
* Determines whether the specified user can edit the property.
* @param p_userID The user to query regarding whether they can edit.
public function canUserEdit(p_userID:String):Boolean
return (_collectionNode.canUserPublish(p_userID,_nodeNameText));
* Allows the current user with an owner role to grant the specified user
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* @param p_userID The userID of the user being granted editing privileges.
public function allowUserToEdit(p_userID:String):void
// If I can't configure, cancel.
if(!_collectionNode.canUserConfigure(userManager.myUserID,_nodeNameText)){
return;
_collectionNode.setUserRole(p_userID, UserRoles.PUBLISHER, _nodeNameText);
Thanks again. We depend on your feedbacks for improving our framework.
Regards
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Hello,
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==
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Rgds, Dovemasijade. wrote:
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The solution is liked this.
1) MySQL document said '0000-00-00' is a valid value for date in DB, but a wrong value for JDBC.
Detail:
http://dev.mysql.com/doc/refman/5.0/en/connector-j-installing-upgrading.html#connector-j-installing-upgrading-3-0-to-3-1
2) It is recognized as a problem, so it has been fixed. Instead of using old JDBC Connector/J, new version with re-configuration of zeroDateTimeBehavior can solve.
I configure it to convertToNull, so in Java I see all value 0000-00-00 from DB as null, works fine.
Many thanks the ideas from all of you.
Rgds, Dove -
When "ab".equals("ab") returns false
One thing that really ticks me off in java is the narrow-mindedness of equals. Given the specifications laid out in Object.equals(), it becomes extremely tricky to ever have equals return true for comparison of Objects of different types.
"So what?" You say. Well, back to the original title of this topic, it is possible for ab to not equal ab in the following cases.
String ab = "ab";
StringBuffer buffer = new StringBuffer(ab);
char[] buf2 = new char[] {'a','b'}
ab.equals(buffer) == always false
buffer.equals(ab) == always false
ab.equals(buf2) == always false
buf2.equals(ab) == always false
I could see how you probably couldn't and shouldn't make a String equal to a character array, but what about a StringBuffer??? I mean, come on! No one's going to try to compare a stringbuffer to a string or vice versa and get frustrated when it doesn't work?
"Well," perhaps you are saying to yourself, "perhaps those that don't understand the way java is implemented could fall into that trap". While you are considering this thought, download the jdk1.5 source code and have a look at java.text.ChoiceFormat, especially applyPattern and how it uses equalsOne thing that really ticks me off in java is the
narrow-mindedness of equals. Given the specifications
laid out in Object.equals(), it becomes extremely
tricky to ever have equals return true for comparison
of Objects of different types.
the equals method in the object class does the same thing as == does, meaning only when you are comparing the same object, it returns true. it is meant to be overridden in subclasses for real situations.
"So what?" You say. Well, back to the original title
of this topic, it is possible for ab to not equal ab
in the following cases.
the title is misleading, "ab" will always equals to "ab". the following is a different matter:
String ab = "ab";
StringBuffer buffer = new StringBuffer(ab);
char[] buf2 = new char[] {'a','b'}
ab.equals(buffer) == always falsethe equals implementation will return true only two objects are of string type. stringbuffer is not, so it will always return false.
buffer.equals(ab) == always falsestringbuffer does no have its own implementation of the equals method, it uses the one in the object class, which will return true if you are comparing the same object, only if == is true, equals will be true. here it is apparently not the xase, so it will reuturn false always.
ab.equals(buf2) == always false
buf2.equals(ab) == always false
see above.
I could see how you probably couldn't and shouldn't
make a String equal to a character array, but what
about a StringBuffer??? I mean, come on! No one's
going to try to compare a stringbuffer to a string or
vice versa and get frustrated when it doesn't work?
see above.
considering this thought, download the jdk1.5 source
code and have a look at java.text.ChoiceFormat,
especially applyPattern and how it uses equalsi dont see any difference in 1.5, as comapred to 1.4. you were probabally not so careful, as i saw in the src a line labled as "tempBuffer", but it was actually a string. -
A trouble with "LIKE" in a select statement
Hi!
I'm having trouble with "LIKE" in a select statement...
With Access I can make the following and everything works well:
SELECT name, birthday
FROM client
WHERE birthday LIKE '*/02/*';
but if try to do it in my application (it uses Access), it doesn't work - I just can't understand that!!!
In my application the "month" is always the currently month taken from the "System". Look what I'm doing...
String query1 = "SELECT name, birthday " +
"FROM client " +
"WHERE birthday " +
"LIKE '*/" +
pMonth +
"/*' " +
"ORDER BY birthday ASC ";
ResultSet rs = statement1.executeQuery(consulta1);
boolean moreRecords = rs.next();
The variable "moreRecords" is always "false", the query returns nothing although the table "client" has records that attend the query.
Please, anyone can help me?! It's a little bit urgent.
Thanks,
Katia.Hi Katia,
I'll bet the problem lies with the characters you're using to escape the LIKE clause. You're using the ones that Access likes to see, but that's not necessarily what's built into the JDBC-ODBC driver class.
You can find out what the correct escape wildcard characters are from the java.sql.DatabaseMetaData.getSearchStringEscape() method. It'll tell you what to use in the LIKE clause.
I'm not 100% sure about your code. It doesn't use query1 anywhere. I'd do this:
String query = "SELECT name, birthday FROM client WHERE birthday LIKE ? ORDER BY birthday ASC";
PreparedStatement statement = connection.createStatement(query);
String escape = connection.getMetaData().getSearchStringEscape();
String test = escape + '/' + pMonth + '/' + escape;
statement.setString(1, test);
ResultSet rs = statement.executeQuery();
while (rs.hasNext())
// load your data into a data structure to pass back.
rs.close();
statement.close();Let me know if that works. - MOD -
What is the difference between exists and in
hi all
if i have these queries
1- select ename from emp where ename in ( select ename from emp where empno=10)
and
2- select ename from emp where exists ( select ename from emp where empno=10)
what is the difference between exists and in is that only when i use in i have to bring the field name or what.... i mean in a complex SQL queries is it will give the same answer
ThanksYou get two entirely different result sets that may be the same. Haah! What do I mean by that.
SQL> select table_name from user_tables;
TABLE_NAME
BAR
FOO
2 rows selected.
SQL> select table_name from user_tables where table_name in (select table_name from user_tables where table_name = 'FOO');
TABLE_NAME
FOO
1 row selected.
SQL> select table_name from user_tables where exists(select table_name from user_tables where table_name = 'FOO');
TABLE_NAME
BAR
FOO
2 rows selected.So, why is this? the WHERE EXISTS means 'if the next is true', much like where 1=1 being always true and 1=2 being always false. In this case, where exists could be TRUE or FALSE, depending on the subquery.
WHERE EXISTS can be useful for something like testing if we have data, without actually having to return columns.
So, if you want to see if an employee exists you might say
SELECT 1 FROM DUAL WHERE EXISTS( select * from emp where empid = 10);
If there is a row in emp for empid=10, then you get back 1 from dual;
This is what I call an 'optimistic' lookup because the WHERE EXISTS ends as soon as there is a hit. It does not care how many - only that at least one exists. It is optimistic because it will continue processing the table lookup until either it hits or reaches the end of the table - for a non-indexed query. -
Can someone explain why 'Y' = 'N' is not working with PARALLEL Plan? i.e. With the filter like 'Y' = 'N' specified and if PQ is used , it does not return instantly. In fact it reads the entire table.
Here is the test case.. Goal is to execute only one of the SQL joined by union all. I have included 'Y' = 'N' in both SQLs for the test purpose.
DB Version is 10.2.0.4
Create table test_tbl_01 nologging as select do.* from dba_objects do , dba_objects d1 where rownum < 22000001;
Create table test_tbl_02 nologging as select do.* from dba_objects do , dba_objects d1 where rownum < 22000001;
execute DBMS_STATS.GATHER_TABLE_STATS('SCOTT', 'TEST_TBL_01');
execute DBMS_STATS.GATHER_TABLE_STATS('SCOTT', 'TEST_TBL_02');
*Serial path with 2 table join*
SQL> select
2 /* parallel(t1,2 ) parallel(t2,2) */
3 t1.*
4 from test_tbl_01 t1 ,test_tbl_02 t2
5 where t1.object_name = t2.object_name
6 and 'Y' = 'N'
7 and t1.object_type = 'TABLE'
8 union all
9 select
10 /* parallel(t1,2 ) parallel(t2,2) */
11 t1.*
12 from test_tbl_01 t1 ,test_tbl_02 t2
13 where t1.object_name = t2.object_name
14 and 'Y' = 'N'
15 /
no rows selected
Elapsed: 00:00:00.01
Execution Plan
Plan hash value: 3500703583
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 2 | 168 | | 0 (0)| |
| 1 | UNION-ALL | | | | | | |
|* 2 | FILTER | | | | | | |
|* 3 | HASH JOIN | | 660G| 50T| 449M| 6242K (99)| 24:16:38 |
|* 4 | TABLE ACCESS FULL| TEST_TBL_01 | 5477K| 386M| | 41261 (2)| 00:09:38 |
| 5 | TABLE ACCESS FULL| TEST_TBL_02 | 22M| 212M| | 40933 (2)| 00:09:34 |
|* 6 | FILTER | | | | | | |
|* 7 | HASH JOIN | | 2640G| 201T| 467M| 24M(100)| 95:54:53 |
| 8 | TABLE ACCESS FULL| TEST_TBL_02 | 22M| 212M| | 40933 (2)| 00:09:34 |
| 9 | TABLE ACCESS FULL| TEST_TBL_01 | 21M| 1546M| | 41373 (3)| 00:09:40 |
Predicate Information (identified by operation id):
2 - filter(NULL IS NOT NULL)
3 - access("T1"."OBJECT_NAME"="T2"."OBJECT_NAME")
4 - filter("T1"."OBJECT_TYPE"='TABLE')
6 - filter(NULL IS NOT NULL)
7 - access("T1"."OBJECT_NAME"="T2"."OBJECT_NAME")
Statistics
1 recursive calls
0 db block gets
0 consistent gets
0 physical reads
0 redo size
567 bytes sent via SQL*Net to client
232 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
0 rows processed
*Parallel path with 2 table join*
SQL> select
2 /*+ parallel(t1,2 ) parallel(t2,2) */
3 t1.*
4 from test_tbl_01 t1 ,test_tbl_02 t2
5 where t1.object_name = t2.object_name
6 and 'Y' = 'N'
7 and t1.object_type = 'TABLE'
8 union all
9 select
10 /*+ parallel(t1,2 ) parallel(t2,2) */
11 t1.*
12 from test_tbl_01 t1 ,test_tbl_02 t2
13 where t1.object_name = t2.object_name
14 and 'Y' = 'N'
15 /
no rows selected
Elapsed: 00:01:09.34
Execution Plan
Plan hash value: 1557722279
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time | TQ |IN-OUT| PQ Distrib |
| 0 | SELECT STATEMENT | | 2 | 168 | | 0 (0)| | | | |
| 1 | PX COORDINATOR | | | | | | | | | |
| 2 | PX SEND QC (RANDOM) | :TQ10004 | | | | | | Q1,04 | P->S | QC (RAND) |
| 3 | BUFFER SORT | | 2 | 168 | | | | Q1,04 | PCWP | |
| 4 | UNION-ALL | | | | | | | Q1,04 | PCWP | |
|* 5 | FILTER | | | | | | | Q1,04 | PCWC | |
|* 6 | HASH JOIN | | 660G| 50T| 224M| 3465K (99)| 13:28:42 | Q1,04 | PCWP | |
| 7 | PX JOIN FILTER CREATE| :BF0000 | 5477K| 386M| | 22861 (2)| 00:05:21 | Q1,04 | PCWP | |
| 8 | PX RECEIVE | | 5477K| 386M| | 22861 (2)| 00:05:21 | Q1,04 | PCWP | |
| 9 | PX SEND HASH | :TQ10000 | 5477K| 386M| | 22861 (2)| 00:05:21 | Q1,00 | P->P | HASH |
| 10 | PX BLOCK ITERATOR | | 5477K| 386M| | 22861 (2)| 00:05:21 | Q1,00 | PCWC | |
|* 11 | TABLE ACCESS FULL| TEST_TBL_01 | 5477K| 386M| | 22861 (2)| 00:05:21 | Q1,00 | PCWP | |
| 12 | PX RECEIVE | | 22M| 212M| | 22679 (1)| 00:05:18 | Q1,04 | PCWP | |
| 13 | PX SEND HASH | :TQ10001 | 22M| 212M| | 22679 (1)| 00:05:18 | Q1,01 | P->P | HASH |
| 14 | PX JOIN FILTER USE | :BF0000 | 22M| 212M| | 22679 (1)| 00:05:18 | Q1,01 | PCWP | |
| 15 | PX BLOCK ITERATOR | | 22M| 212M| | 22679 (1)| 00:05:18 | Q1,01 | PCWC | |
| 16 | TABLE ACCESS FULL| TEST_TBL_02 | 22M| 212M| | 22679 (1)| 00:05:18 | Q1,01 | PCWP | |
|* 17 | FILTER | | | | | | | Q1,04 | PCWC | |
|* 18 | HASH JOIN | | 2640G| 201T| 233M| 13M(100)| 53:15:52 | Q1,04 | PCWP | |
| 19 | PX RECEIVE | | 22M| 212M| | 22679 (1)| 00:05:18 | Q1,04 | PCWP | |
| 20 | PX SEND HASH | :TQ10002 | 22M| 212M| | 22679 (1)| 00:05:18 | Q1,02 | P->P | HASH |
| 21 | PX BLOCK ITERATOR | | 22M| 212M| | 22679 (1)| 00:05:18 | Q1,02 | PCWC | |
| 22 | TABLE ACCESS FULL | TEST_TBL_02 | 22M| 212M| | 22679 (1)| 00:05:18 | Q1,02 | PCWP | |
| 23 | PX RECEIVE | | 21M| 1546M| | 22924 (2)| 00:05:21 | Q1,04 | PCWP | |
| 24 | PX SEND HASH | :TQ10003 | 21M| 1546M| | 22924 (2)| 00:05:21 | Q1,03 | P->P | HASH |
| 25 | PX BLOCK ITERATOR | | 21M| 1546M| | 22924 (2)| 00:05:21 | Q1,03 | PCWC | |
| 26 | TABLE ACCESS FULL | TEST_TBL_01 | 21M| 1546M| | 22924 (2)| 00:05:21 | Q1,03 | PCWP | |
Predicate Information (identified by operation id):
5 - filter(NULL IS NOT NULL)
6 - access("T1"."OBJECT_NAME"="T2"."OBJECT_NAME")
11 - filter("T1"."OBJECT_TYPE"='TABLE')
17 - filter(NULL IS NOT NULL)
18 - access("T1"."OBJECT_NAME"="T2"."OBJECT_NAME")
Statistics
1617 recursive calls
3 db block gets
488929 consistent gets
493407 physical reads
636 redo size
567 bytes sent via SQL*Net to client
232 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
6 sorts (memory)
0 sorts (disk)
0 rows processedHowever single table with UNION ALL and PQ works..
*NO Joins (i.e. Single Table with PQ ) , Issue does not show-up.*
_*SERIAL PLAN with one Table*_
SQL> select
2 /* parallel(t1,2 ) */
3 t1.*
4 from test_tbl_01 t1
5 where 'Y' = 'N'
6 and t1.object_type = 'TABLE'
7 union all
8 select
9 /* parallel(t1,2 ) */
10 t1.*
11 from test_tbl_01 t1
12 where 'Y' = 'N'
13 /
no rows selected
Elapsed: 00:00:00.01
Execution Plan
Plan hash value: 2870519681
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 2 | 148 | 0 (0)| |
| 1 | UNION-ALL | | | | | |
|* 2 | FILTER | | | | | |
|* 3 | TABLE ACCESS FULL| TEST_TBL_01 | 5477K| 386M| 41261 (2)| 00:09:38 |
|* 4 | FILTER | | | | | |
| 5 | TABLE ACCESS FULL| TEST_TBL_01 | 21M| 1546M| 41373 (3)| 00:09:40 |
Predicate Information (identified by operation id):
2 - filter(NULL IS NOT NULL)
3 - filter("T1"."OBJECT_TYPE"='TABLE')
4 - filter(NULL IS NOT NULL)
Statistics
0 recursive calls
0 db block gets
0 consistent gets
0 physical reads
0 redo size
567 bytes sent via SQL*Net to client
232 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
0 rows processed
_*PARALLEL PLAN with one Table*_
SQL> select
2 /*+ parallel(t1,2 ) */
3 t1.*
4 from test_tbl_01 t1
5 where 'Y' = 'N'
6 and t1.object_type = 'TABLE'
7 union all
8 select
9 /*+ parallel(t1,2 ) */
10 t1.*
11 from test_tbl_01 t1
12 where 'Y' = 'N'
13 /
no rows selected
Elapsed: 00:00:00.09
Execution Plan
Plan hash value: 3114025180
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | TQ |IN-OUT| PQ Distrib |
| 0 | SELECT STATEMENT | | 2 | 148 | 0 (0)| | | | |
| 1 | PX COORDINATOR | | | | | | | | |
| 2 | PX SEND QC (RANDOM) | :TQ10000 | | | | | Q1,00 | P->S | QC (RAND) |
| 3 | UNION-ALL | | | | | | Q1,00 | PCWP | |
|* 4 | FILTER | | | | | | Q1,00 | PCWC | |
| 5 | PX BLOCK ITERATOR | | 5477K| 386M| 22861 (2)| 00:05:21 | Q1,00 | PCWC | |
|* 6 | TABLE ACCESS FULL| TEST_TBL_01 | 5477K| 386M| 22861 (2)| 00:05:21 | Q1,00 | PCWP | |
|* 7 | FILTER | | | | | | Q1,00 | PCWC | |
| 8 | PX BLOCK ITERATOR | | 21M| 1546M| 22924 (2)| 00:05:21 | Q1,00 | PCWC | |
| 9 | TABLE ACCESS FULL| TEST_TBL_01 | 21M| 1546M| 22924 (2)| 00:05:21 | Q1,00 | PCWP | |
Predicate Information (identified by operation id):
4 - filter(NULL IS NOT NULL)
6 - filter("T1"."OBJECT_TYPE"='TABLE')
7 - filter(NULL IS NOT NULL)
Statistics
28 recursive calls
3 db block gets
7 consistent gets
0 physical reads
628 redo size
567 bytes sent via SQL*Net to client
232 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
2 sorts (memory)
0 sorts (disk)
0 rows processedThe same behvious appears in 11.1.0.6, and you don't need such a large data set to prove the point. The paralllel distribution may change to a broadcast with a smaller data set, but I demonstrated the effect when my two tables simply selected 30,000 rows each from all_objects.
I think you should pass this to Oracle Corp. as a bug - using the smaller data set.
The problem seems to be the way that Oracle combines multiple lines of a plan into groups of operations (as in PCWC, PCWC, PCWP). It looks like this particularly example has managed to fold the FILTER into a group in such a way that Oracle has lost track of the fact that it is a 'pre-emptng - i.e. always false' filter rather than an ordinary data filter; consequently the filter doesn't apply until after the hash join starts running.
In my example (which did a broadcast distribution) I could see that Oracle read the entire first table, then started to read the second table, but stopped after one row of the second table, because my plan allowed the join and filter to be applied immediately after the first row from the second table. And I think Oracle decided that the filter was alway going to be false at that moment - so stopped running the second tablescan. You've used a hash/hash distribriution, which has resulted in both scans completing because the slaves in each layer don't talk to each other.
Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk
"Science is more than a body of knowledge; it is a way of thinking"
Carl Sagan
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