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update properties to add extensional interactions between them

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This commit is contained in:
alpaylan 2025-01-13 14:35:42 +03:00
parent 82fcc27a58
commit 13442808dd
5 changed files with 189 additions and 25 deletions
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20
simulator/model/query.rs
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@ -20,6 +20,26 @@ impl Predicate {
pub(crate) fn false_() -> Self {
Self::Or(vec![])
}
pub(crate) fn test(&self, row: &[Value], table: &Table) -> bool {
let get_value = |name: &str| {
table
.columns
.iter()
.zip(row.iter())
.find(|(column, _)| column.name == name)
.map(|(_, value)| value)
};
match self {
Predicate::And(vec) => vec.iter().all(|p| p.test(row, table)),
Predicate::Or(vec) => vec.iter().any(|p| p.test(row, table)),
Predicate::Eq(column, value) => get_value(column) == Some(value),
Predicate::Neq(column, value) => get_value(column) != Some(value),
Predicate::Gt(column, value) => get_value(column).map(|v| v > value).unwrap_or(false),
Predicate::Lt(column, value) => get_value(column).map(|v| v < value).unwrap_or(false),
}
}
}
impl Display for Predicate {

16
simulator/model/table.rs
View file

@ -53,6 +53,22 @@ pub(crate) enum Value {
Blob(Vec<u8>),
}
impl PartialOrd for Value {
fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
match (self, other) {
(Self::Null, Self::Null) => Some(std::cmp::Ordering::Equal),
(Self::Null, _) => Some(std::cmp::Ordering::Less),
(_, Self::Null) => Some(std::cmp::Ordering::Greater),
(Self::Integer(i1), Self::Integer(i2)) => i1.partial_cmp(i2),
(Self::Float(f1), Self::Float(f2)) => f1.partial_cmp(f2),
(Self::Text(t1), Self::Text(t2)) => t1.partial_cmp(t2),
(Self::Blob(b1), Self::Blob(b2)) => b1.partial_cmp(b2),
// todo: add type coercions here
_ => None,
}
}
}
fn to_sqlite_blob(bytes: &[u8]) -> String {
format!(
"X'{}'",