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# CDM-Server & Switchable DataSources

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_On exposing multiple data sources with a single instance of cdm-remote-webapp._

The following classes are related to the switchable database infrastructure which allows to serve 

multiple databases with only a single instance of the cdm-remote-webapp. 

.

* source:trunk/cdmlib/cdmlib-persistence/src/main/java/eu/etaxonomy/cdm/database/UpdatableRoutingDataSource.java

* source:trunk/cdmlib/cdmlib-remote/src/main/java/eu/etaxonomy/cdm/remote/controller/interceptor/DatasourceContextHandlerInterceptor.java

This concept however has been deprecated due to several problems of which the term loading issue is most severe one.

This classes should however not deleted since we once might wish to switch back to this concept when we are 

able to deal with the implicated issues.

* http://stackoverflow.com/questions/14555611/changing-datasource-connection-url-runtime

* http://docs.spring.io/spring/docs/3.0.x/api/org/springframework/jdbc/datasource/lookup/AbstractRoutingDataSource.html

* http://howtodoinjava.com/2013/12/28/spring-3-2-5-abstractroutingdatasource-example/