Proof of Concept

src/state/queries/mod.rs

@@ -0,0 +1,52 @@
+mod elements;
+
+pub use elements::*;
+
+mod peers;
+pub use peers::*;
+
+
+#[macro_export]
+macro_rules! build_query {
+    ($payload:expr, $params:expr) => {
+        {
+            // Build parameters map
+            let mut params_map: BTreeMap<String, DataValue> = Default::default();
+            let mut parameters_init = String::new();
+
+            if $params.len() > 0 {
+                for (name, value) in $params {
+                    let _: &str = name; // only for type annotation
+                    params_map.insert(name.to_string(), value);
+                }
+    
+                // First line: Initialize parameters, make them available in CozoScript
+                use itertools::Itertools;
+                parameters_init += "?[";
+                parameters_init += &params_map.iter().map(|(name, _)| name).format(", ").to_string();
+                parameters_init += "] <- [[";
+                parameters_init += &params_map.iter().map(|(name, _)| format!("${}", name)).format(", ").to_string();
+                parameters_init += "]]";
+            }
+
+            // Return query string and parameters map
+            (
+                format!("{}\n\n{}", parameters_init, $payload),
+                params_map
+            )
+        }
+    };
+}
+
+
+use build_query;
+
+#[macro_export]
+macro_rules! run_query {
+    ($db:expr, $payload:expr, $params:expr, $mutability:expr) => {
+        {
+            let (query, parameters) = crate::state::queries::build_query!($payload, $params);
+            $db.run_script(query.as_str(), parameters, $mutability)
+        }
+    };
+}