Lionel Sambuc
2b4eb67b9e
* Refactor the code, Update to the Service API REST JSON objects on disk. * Connect to the DB data model and engine to execute queries. * Remove the syntactic sugar around implicit `inside` operation on shapes, as it introduces issues.
49 lines
1.4 KiB
Rust
49 lines
1.4 KiB
Rust
use mercator_db::DataBase;
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use super::expressions::Predictor;
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use super::symbols::*;
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impl Predictor for Projection {
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fn predict(&self, db: &DataBase) -> Result<f64, String> {
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match self {
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Projection::Nifti(_, _, bag) => bag.predict(db),
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Projection::JSON(_, _, bag) => bag.predict(db),
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}
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}
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}
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impl Predictor for Bag {
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fn predict(&self, db: &DataBase) -> Result<f64, String> {
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match self {
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Bag::Distinct(bag) => bag.predict(db),
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Bag::Filter(_, bag) => bag.predict(db),
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Bag::Complement(bag) => Ok(db.space(bag.space())?.volume() - bag.predict(db)?),
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Bag::Intersection(lh, rh) => {
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let l = lh.predict(db)?;
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let r = rh.predict(db)?;
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if l < r {
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Ok(l)
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} else {
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Ok(r)
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}
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}
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Bag::Union(lh, rh) => Ok(lh.predict(db)? + rh.predict(db)?),
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Bag::Bag(bags) => {
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let mut s = 0.0;
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for bag in bags {
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s += bag.predict(db)?;
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}
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Ok(s)
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}
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Bag::Inside(shape) => shape.predict(db),
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Bag::Outside(shape) => Ok(db.space(shape.space())?.volume() - shape.predict(db)?),
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}
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}
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}
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impl Predictor for Shape {
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fn predict(&self, _db: &DataBase) -> Result<f64, String> {
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Ok(self.volume())
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}
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}
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