Java Composition Metamodel
Java Composition Model, weaving KDM Model Source and Java Model, can easily become a big model, in terms of XMI size as well as number of model elements.
First implementation resulted in a single XMI file containing all the weaving elements between both models.
Second implementation results in a root XMI file, referencing other xmi fragment
Splitting was done following this repartition :
- First resource contains the JavaApplication itself
- Second resource contains all Java2Directory
- One resource per package/directory
This splitting enable the browser to perform lazy loading when browsing a composite model in the MoDisco Model Browser It has been decided to split after realizing a benchmark on the memory consumption of the MoDisco model browser.
This figure show the memory used by the MoDisco Model Browser on several resource xmi obtained with the Java Composition Discoverer. The gain of memory thanks to the lazy loading is significant.
To decide which solution of splitting to choose, we made another benchmark on the time spent on serializing the resource on the hard drive.