Hi,
Do you have any sufficient reasons to migrate from 2.x.x right now?

Apache Ignite 2.x.x is developed independently from 3.x.x and does not
become EOL for the foreseeable future.

вт, 6 мая 2025 г. в 18:32, João Lola <joao.l...@hexa-consulting.pt>:
>
> Hello,
>
> Thank you all for the information you have provided so far.
>
> Can you kindly recommend some kind of guide to help with migration from 2.x.x 
> to 3.x.x?
>
> So that I can make the necessary changes.
>
> Best Regards | Com os melhores cumprimentos,
> João Lola
> ________________________________
> De: Stephen Darlington <sdarling...@apache.org>
> Enviado: 23 de abril de 2025 09:03
> Para: user@ignite.apache.org <user@ignite.apache.org>
> Assunto: Re: Apache 2.X.X upgraded to 3.X.X
>
> The Spring Boot auoconfigurer exists: 
> https://mvnrepository.com/artifact/org.apache.ignite/spring-boot-ignite-client-autoconfigure
>
> On Tue, 22 Apr 2025 at 23:02, Raj <rajkumar...@gmail.com> wrote:
>
> Besides service grid, other features like continuous query, cache 
> interceptors (similar to DB triggers), user defined sql functions and ignite 
> extensions for spring boot client autoconfigs, CDC Kafka streamers etc seem 
> to be missing in Ignite 3 but available in Ignite 2.
>
>
>
>
> On Tue, Apr 22, 2025, 8:17 AM Stephen Darlington <sdarling...@apache.org> 
> wrote:
>
> With the exception of the Service Grid, it's not that these features are no 
> longer available. Rather, they are either configured differently or are no 
> longer relevant. For example, CacheAtomicityMode is no longer needed as all 
> tables are now transactional. Indeed, it supports SQL transactions, which 
> Ignite 2 couldn't do.
>
> On Tue, 22 Apr 2025 at 10:37, João Lola <joao.l...@hexa-consulting.pt> wrote:
>
> Hello Stephen,
>
> Thanks for your reply, I am currently trying to adapt apache ignite 3.0.0 
> with my spring application I notice some features are no longer available.
>
> Like these bellow:
>
> org.apache.ignite.services.Service;
> org.apache.ignite.services.ServiceContext;
> org.apache.ignite.configuration.CacheConfiguration;
> org.apache.ignite.cluster.ClusterNode;
> org.apache.ignite.lang.IgnitePredicate;
> import org.apache.ignite.cache.CacheAtomicityMode;
> import org.apache.ignite.cache.CacheMode;
> import org.apache.ignite.cache.CacheWriteSynchronizationMode;
> import org.apache.ignite.IgniteException;
> import org.apache.ignite.lifecycle.LifecycleBean;
> import org.apache.ignite.lifecycle.LifecycleEventType;
> import org.apache.ignite.events.Event;
> import org.apache.ignite.events.EventType;
> import org.apache.ignite.lang.IgnitePredicate;
>
>
> Best Regards | Com os melhores cumprimentos,
> João Lola
> ________________________________
> De: Stephen Darlington <sdarling...@apache.org>
> Enviado: 22 de abril de 2025 10:28
> Para: user@ignite.apache.org <user@ignite.apache.org>
> Assunto: Re: Apache 2.X.X upgraded to 3.X.X
>
> What do you mean by "full spring support"? What functionality are you looking 
> for? Ignite 3 no longer uses Spring for its configuration.
>
> On Tue, 22 Apr 2025 at 09:55, João Lola <joao.l...@hexa-consulting.pt> wrote:
>
> Hello Raj,
>
> Thank you so much for explanation regarding this question.
>
> I have another question for you:
>
> Does apache ignite 3.0.0 have full spring support or will it have in the 
> future? Because ignite-spring only goes up to 2.17.
>
> Best Regards | Com os melhores cumprimentos,
> João Lola
> ________________________________
> De: Raj <rajkumar...@gmail.com>
> Enviado: 22 de abril de 2025 02:13
> Para: user@ignite.apache.org <user@ignite.apache.org>
> Assunto: Re: Apache 2.X.X upgraded to 3.X.X
>
> I do see the annotations supported in Ignite 3 in addition to the 
> tabledescriptor builder API
>
> https://ignite.apache.org/docs/ignite3/latest/developers-guide/java-to-tables
>
> Please check @Table, @Column and other  annotations that are located in the 
> org.apache.ignite.catalog.annotations package in order to migrate from Ignite 
> 2 annotations.
>
>
> On Mon, Apr 21, 2025, 8:21 PM ypeng <yp...@t-online.de> wrote:
>
> In Apache Ignite 3.0.0, the `@QuerySqlField` annotation has indeed been
> removed as part of a major architectural overhaul. This significant
> change affects how you define queryable fields in your domain models.
>
> For Ignite 3.0.0, the recommended approach is to use the new Table API
> instead of annotations. In this new model, you define tables
> programmatically rather than using annotations on your Java classes.
>
> Here's how you can transition from the annotation-based approach to the
> new Table API:
>
> 1. Instead of annotating fields with `@QuerySqlField`, you'll now create
> table definitions using `TableDescriptor` and the fluent API.
>
> 2. Basic example of creating a table in Ignite 3.0.0:
>
> ```java
> TableDescriptor table = TableDescriptor.builder()
>      .name("MyTable")
>      .addColumn("id", ColumnType.INT32, true)  // primary key
>      .addColumn("name", ColumnType.STRING)
>      .addColumn("age", ColumnType.INT32)
>      .build();
>
> tables.createTable(table).get();
> ```
>
> 3. For working with the data, you'll use the Table API methods for CRUD
> operations rather than putting/getting annotated objects.
>
> The shift from 2.x to 3.0.0 is substantial and requires rethinking your
> data model approach. The new version moves away from the "object in the
> cache" model toward a more traditional table-based database approach.
>
> If you have a significant investment in the annotation-based approach
> and need to maintain compatibility, you might consider:
>
> 1. Staying on Ignite 2.x for the time being
> 2. Creating an abstraction layer in your code to isolate the
> Ignite-specific parts, making future migration easier
> 3. Gradually migrating components to use the new Table API while
> maintaining the old components on 2.x
>
> The Ignite 3.0 documentation provides comprehensive guidance on the new
> Table API and migration strategies from 2.x.
>
> João Lola:
> > I am currently using Apache Ignite 2.17.0 on a project I am working on,
> > I am interested in upgrading to 3.0.0. But I notice query annotations,
> > e.g @QuerySqlField are no longer available as of 3.0.0, so my question
> > is what can I use in 3.0.0 to replace it if available, if not what is
> > recommend to use instead?
>

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