adding methods for layered edges in graphql (Pometry#1331)

* adding methods for layered edges in graphql

* adding methods for layered edges in graphql

* added start and end

raphtory-graphql/src/model/graph/edge.rs

@@ -1,12 +1,15 @@
 use crate::model::graph::node::Node;
 use dynamic_graphql::{ResolvedObject, ResolvedObjectFields};
 use itertools::Itertools;
-use raphtory::db::{
-    api::view::{
-        internal::{DynamicGraph, IntoDynamic},
-        EdgeViewOps, GraphViewOps,
+use raphtory::{
+    db::{
+        api::view::{
+            internal::{DynamicGraph, IntoDynamic},
+            EdgeViewOps, GraphViewOps,
+        },
+        graph::edge::EdgeView,
     },
-    graph::edge::EdgeView,
+    prelude::{LayerOps, TimeOps},
 };
 
 #[derive(ResolvedObject)]
@@ -35,6 +38,14 @@ impl Edge {
         self.ee.latest_time()
     }
 
+    async fn start(&self) -> Option<i64> {
+        self.ee.start()
+    }
+
+    async fn end(&self) -> Option<i64> {
+        self.ee.end()
+    }
+
     async fn src(&self) -> Node {
         self.ee.src().into()
     }
@@ -47,10 +58,22 @@ impl Edge {
         self.ee.properties().get(name).map(|prop| prop.to_string())
     }
 
+    async fn layer(&self, layer_name: &str) -> Option<Edge> {
+        self.ee.layer(layer_name).map(|ee| ee.into())
+    }
+
     async fn layers(&self) -> Vec<String> {
         self.ee.layer_names().map_into().collect()
     }
 
+    async fn layer_exploded_edges(&self) -> Vec<Edge> {
+        self.ee
+            .explode_layers()
+            .into_iter()
+            .map(|ee| ee.into())
+            .collect_vec()
+    }
+
     async fn history(&self) -> Vec<i64> {
         self.ee.history()
     }

raphtory-graphql/src/model/graph/node.rs

@@ -41,6 +41,14 @@ impl Node {
         self.vv.name()
     }
 
+    async fn start(&self) -> Option<i64> {
+        self.vv.start()
+    }
+
+    async fn end(&self) -> Option<i64> {
+        self.vv.end()
+    }
+
     pub async fn node_type(&self) -> String {
         self.vv
             .properties()