[jira] [Assigned] (CAMEL-8864) Camel-Aggregator JDBC repository always overwrites old exchange

["Claus Ibsen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAMEL-8864?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Claus Ibsen reassigned CAMEL-8864:
----------------------------------

    Assignee: Claus Ibsen

> Camel-Aggregator JDBC repository always overwrites old exchange
> ---------------------------------------------------------------
>
>                 Key: CAMEL-8864
>                 URL: https://issues.apache.org/jira/browse/CAMEL-8864
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-sql
>    Affects Versions: 2.15.2
>            Reporter: Pankaj Takawale
>            Assignee: Claus Ibsen
>            Priority: Minor
>             Fix For: 2.16.0
>
>
> I'm using FlexibleAggregationStrategy to aggregate objects into collection. I found following issue where Aggregator ends up overwriting old collection with the new one.
> JdbcCamelCodec is not marshaling all of the exchange properties. 
> E.g. it does not marshal exchange's 'CamelFlexAggrStrCollectionGuard' property.
> So next time Aggregator tries to fetch BLOB from database, oldExchange does not have above property.
> So following code creates new collection for each new object, and hence overwrites the old collection.
> private Collection<E> FlexibleAggregationStrategy::safeInsertIntoCollection(Exchange oldExchange, Collection<E> oldValue, E toInsert) {
>         Collection<E> collection = null;
>         try {
>             if (oldValue == null || oldExchange.getProperty(COLLECTION_AGGR_GUARD_PROPERTY, Boolean.class) == null) {
>                 try {
>                      collection = collectionType.newInstance();    //**EVERYTIME NEW COLLECTION as previous aggregation did not serialize COLLECTION_AGGR_GUARD_PROPERTY to database.



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