I was getting the error "Event 'event100' is unknown".
Response: the event will be created If It doesn't exist. I don't know
why you get that error.
if (context.events.get(eventName) == null)
{
createEvent.execute(context);
}
More to that, you were talking about databases, but I don?t see
anything related to databases in your tests.
Reponse: I just try to show you what happens if I use many contexts
(of course for storing many databases). Events can't work with many
contexts.
And avoid the creation of new Context instances
Response: That why I asked you how should I need to do when I use more
than one database on a context.
Quoting Christian Grün <[email protected]>:
Please invest some more time, and send me examples that run out of the
box. In the given case, I had to rename the class constructor to
Case1; next, I was getting the error "Event 'event100' is unknown".
More to that, you were talking about databases, but I don?t see
anything related to databases in your tests.
If you create a BaseXServer instance, you should generally use
ClientSession instances whenever you communicate with the server, and
avoid the creation of new Context instances. You may want to have a
look at the EventTest class [1], which demonstrates how multiple
clients can concurrently watch events in the client/server
architecture.
[1]
https://github.com/BaseXdb/basex/blob/master/src/test/java/org/basex/test/server/EventTest.java
___________________________
On Tue, Mar 26, 2013 at 3:57 AM, <[email protected]> wrote:
Thank you for your answer.
I give you some cases why I can't use many contexts to store many databases.
Case1: create only one BaseXServer. In this case, the context of the
BaseXServer is not related to contexts that I store my databases. Thus, no
contexts can work with events.
Case2: create one BaseXServer for each context. In this case, only one the
first context (and event) can work with events.
These are the reasons why I have to use ONE context to store many databases.
Quoting Christian Grün <[email protected]>:
Thanks. I?m not sure what you tried to do with event? Do you have a
little example or some more information?
___________________________
Thank you for you answer. I have ever used many contexts to store many
databases but the EVENT coundn't work properly. Dimitar has adviced me
that
I should use one context for many databases. It has worked well until I
used
AlterDB.
How should I do to use many databases on one context?
Quoting Christian Grün <[email protected]>:
Thanks for your response. I use "pin" so that a context can store many
databases. If I don't use "pin", a newest database will override the
current
database (see context.dbs.list.elementData). Please tell me how can I
use
many database on one context.
?I see. Sounds like a dangerous journey, because the whole
architecture relies on the concept that only one database is opened in
the current context. Why do you want to keep more than one database
opened at the same time?
Christian
__________________________
Quoting Christian Grün <[email protected]>:
Hi,
it?s probably a better idea to avoid explicit (un)pinning of nodes;
all commands should correctly do this for you. Out of interest: why
did you choose to do pinning by yourself?
Best,
Christian
_____________________________
Dear BaseX team,
I want to ask you how to use the class AlterDB to change a database
name.
It
always throws the exception DB_PINNED_X although I use "unpin" before
using
AlterDB. I found the problem is that the method
TableDiskAccess.locked(db,
this) always returns "true". Please see the attachment and help me
solve
the
problem.
Thanks in advance.
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