Hi All,
I have a cache that is running and is defined as
IgniteCache<Object, Object> exchCache =
ignite.getOrCreateCache(new CacheConfiguration<>("EXCHANGE")
.setIndexedTypes(Long.class, Exchange.class)
.setAtomicityMode(CacheAtomicityMode.ATOMIC)
.setBackups(0)
);
from a dotnet client how can I get a continuous query so that I am notified
of the changes to the cache? I can access the cache VIA DBeaver and other
sql tools.
the documentation does not make it clear how to set this up. I want ALL
changes to the cache to be sent to the client. The DOTNET example does not
appear to work for this scenario. It is using a simple <int,string> for
cache. I have tried <object,object> but it does not appear to ever be
notified of events
On Tue, May 14, 2019 at 10:55 AM Denis Mekhanikov <[email protected]>
wrote:
> Mike,
>
> First of all, it's recommended to have a separate cache per table to avoid
> storing of objects of different types in the same cache.
>
> Continuous query receives all updates on the cache regardless of their
> type. Local listener is invoked when new events happen. Existing records
> can be processed using initial query.
>
> Refer to the following documentation page for more information:
> https://apacheignite.readme.io/docs/continuous-queries
>
> Denis
>
> чт, 2 мая 2019 г. в 14:14, Mike Needham <[email protected]>:
>
>> I have seen that example, what I do not understand is I have two SQL
>> tables in a cache that has n number of nodes. it is loaded ahead of time
>> and a client wants to be notified when the contents of the cache are
>> changed. Do you have to have the continuous query in a never ending loop
>> to not have it end? All the examples are simply using ContinuousQuery<
>> Integer, String>. my example uses <Long, Exchange.class> which is a java
>> class defining the structure. do I just set-up a ContinuousQuery<Long,
>> Exchange.class>
>>
>> On Thu, May 2, 2019 at 3:59 AM aealexsandrov <[email protected]>
>> wrote:
>>
>>> Hi,
>>>
>>> The good example of how it can be done you can see here:
>>>
>>>
>>> https://github.com/gridgain/gridgain-advanced-examples/blob/master/src/main/java/org/gridgain/examples/datagrid/query/ContinuousQueryExample.java
>>>
>>> You can set remote listener to handle changes on remote nodes and local
>>> listers for current.
>>>
>>> Note that you will get the updates only until ContinuousQuery will not be
>>> closed or until the node that starts it will not left the cluster.
>>>
>>> Also, you can try to use CacheEvents like in example here:
>>>
>>> https://apacheignite.readme.io/docs/events#section-remote-events
>>>
>>> Note that events can affect your performance.
>>>
>>> BR,
>>> Andrei
>>>
>>>
>>>
>>>
>>>
>>> --
>>> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>>>
>>
>>
>> --
>> *Don't be afraid to be wrong. Don't be afraid to admit you don't have all
>> the answers. Don't be afraid to say "I think" instead of "I know."*
>>
>
--
*Don't be afraid to be wrong. Don't be afraid to admit you don't have all
the answers. Don't be afraid to say "I think" instead of "I know."*
