#9 Second Evaluation Approaches

Greetings everyone!

Since a lot has not transpired in the last two weeks, I decided to write a combined blog for both. Last week, I completed implementing the rules provided in the Spatial package specification. In a sheer coincidence, I crossed 100 commits and 10k lines of code in the process too!

While implementing constraints for MixedGeometry, I had to make some changes in the SpatialParser. The parser had no case to handle elements with ContextObject as MixedGeometry. So I added the block to read listOfOrdinalMappings and listOfGeometryDefinitions. Also, the parser did not have the code to read the OrdinalMapping element, so that was added too.

The implementation of the rules for this class was pretty straightforward, but I encountered a small problem while testing some of the rules. Earlier, the parser recognised geometry definitions as a child of listOfGeometryDefinitions belonging to the main Geometry element. But MixedGeometry also has a listOfGeometryDefinitions. The geometry definitions in this list were being wrongly stored as children of the Geometry element. So I created a new addGeomteryDefinition() method which adds the GeometryDefinition to the correct parent by checking the parent ContextObject.

These corrections and additions in the SpatialParser also fix many of the problems that were encountered while reading and rewriting the test files using stax. Implementing rules for OrdinalMapping and SampledFiled were straight forward too, although I had to edit some test files along the way.

Now I enter the last phase of GSoC, where I'll try to figure out some more rules from the text of the specification, and once approved by my mentors, I shall implement them. I shall resume discussing the different constraint rules in my next blog. 

Till next time,

Cheers!