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Google App Engine implementation

The Google App Engine implementation only supports one primary key for each class, and also this primary key field must be of type long or java.lang.Long. Any other annotation but @Id is ignored.

The only thing you have to do to use the Google App Engine implementation is write the siena.properties file with the following content in the same directory than your model classes:

implementation = siena.gae.GaePersistenceManager
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