Db4o updating arraylist problem

Posted by / 10-Feb-2021 20:25

Db4o updating arraylist problem

This updating task can be feasible if modifications of the object structure are not too complex.But if modifications are complex also the update operation is complex.

The modified object structure could also be multi-rooted, but at the moment we can ignore it.One embed method call can replace dozens of lines of complicated updating code in a traditional client program of an object database, which is a huge improvement.As a declarative method the embed method takes only one natural parameter, the root object of a modified object structure in the run-time memory, which makes it extremely easy to use.In addition, I introduce an application for the theory, a new efficient method, “embed”, that can be used to update object databases declaratively.The embed method "revolutionizes" updating of object databases.

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The embed method does not only transfer the modified information into the object database but also removes structures of garbage objects from the object database if any appear during the update operation, leaving the database in a consistent state.

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