Lionel Sambuc
6fc2cc5942
* Refactor the index scale selection. * Document more explicitly where coordinates are encoded or not. * Improve error messages part of the encoding / decoding and of space projections.
Mercator DB
Database model for the Mercator spatial index.
Mercator: Spatial Index
Mercator is a spatial volumetric index for the Human Brain Project. It is a component of the Knowledge Graph service, which provides the spatial anchoring for the metadata registered as well as processes the volumetric queries.
It is build on top of the Iron Sea database toolkit.
Iron Sea: Database Toolkit
Iron Sea provides a set of database engine bricks, which can be combined and applied on arbitrary data structures.
Unlike a traditional database, it does not assume a specific physical structure for the tables nor the records, but relies on the developper to provide a set of extractor functions which are used by the specific indices provided.
This enables the index implementations to be agnostic from the underlying data structure, and re-used.
Requirements
Software
Quick start
Building from sources
To build this project, you will need to run the following:
cargo build --release
Installation
To install the software on the system you can use:
cargo install --release
Usage
The binary db-test provided is used only as an integration test at this point. It will convert a json input to a binary representation, before building an index over it. Once this is achieved, it will run a couple of hard-coded queries over the index.
cargo run --release
Documentation
For more information, please refer to the documentation.
If you want to build the documentation and access it locally, you can use:
cargo doc --open
Acknowledgements
This open source software code was developed in part or in whole in the Human Brain Project, funded from the European Union’s Horizon 2020 Framework Programme for Research and Innovation under the Specific Grant Agreement No. 785907 (Human Brain Project SGA2).