| = Apache Camel 3.x Upgrade Guide |
| |
| This document is for helping you upgrade your Apache Camel application |
| from Camel 3.x to 3.y. For example if you are upgrading Camel 3.0 to 3.2, then you should follow the guides |
| from both 3.0 to 3.1 and 3.1 to 3.2. |
| |
| == Upgrading Camel 3.4 to 3.5 |
| |
| === FluentProducerTemplate |
| |
| The template will now automatic clear its state send sending the message, this avoids end users having to call `clearAll` after usage, |
| in case the template should be reused to send other messages. |
| |
| After the template has been started / used the first time, then its general configuration cannot be altered later, |
| instead create a new template. |
| |
| === PackageScanClassResolver |
| |
| The `PackageScanClassResolver` will now skip abstract classes in its `findImplementations` method. |
| |
| === camel-bean |
| |
| The `bean(class)` EIP will now lookup in the registry first whether there is a single bean instance of the given class type |
| and use the existing bean (for singleton scope) instead of creating a new instance. |
| |
| === camel-cassandraql |
| |
| Load-balancing policy has changed. There are no existing load balancing policies (see https://docs.datastax.com/en/developer/java-driver/4.3/upgrade_guide/#load-balancing-policy[upgrade guide]). |
| To customize load balancing policy, please use the parameter `loadBalancingPolicyClass` and provide own implementation |
| of load balancing policy. |
| |
| Session impelentation class has changed from `com.datastax.driver.core.Session` to |
| `com.datastax.oss.driver.api.core.CqlSession` (see https://docs.datastax.com/en/developer/java-driver/4.3/upgrade_guide/#session[upgrade guide]). |
| This could have direct impact on the type of parameter `beanRef` if you are using `Provided Session reference`. |
| |
| There is a new parameter `datacenter` (with default value `datacenter1`). Data center has to be defined for the proper |
| behavior of the default load balancing policy. |
| |
| === camel-sjms |
| |
| The default value for `keepAliveDelay` is changed from `-1` to `5000` in the batch jms consumer. |
| |
| === camel-weather |
| |
| The option `httpClient` is now a query parameter. |
| |
| A new parameter `geoLocationProvider` was introduced to allow the use of a custom `GeolocationProvider` implementation. |
| |
| === Camel Karaf |
| |
| The following features has been removed due they become not compatible with OSGi: `camel-couchbase`. |
