Add connectors ->keysToCamelCase arrow method

Cargo.lock

@@ -219,6 +219,7 @@ dependencies = [
  "encoding_rs",
  "form_urlencoded",
  "hashbrown 0.16.1",
+ "heck",
  "hex",
  "http 1.4.0",
  "indexmap 2.13.0",

Cargo.toml

@@ -52,6 +52,7 @@ apollo-parser = "0.8.4"
 apollo-smith = "0.15.2"
 async-trait = "0.1.77"
 encoding_rs = "0.8"
+heck = "0.5.0"
 hex = { version = "0.4.3", features = ["serde"] }
 http = "1.1.0"
 insta = { version = "1.38.0", features = [

apollo-federation/Cargo.toml

@@ -31,6 +31,7 @@ derive_more = { version = "2.0.0", features = [
 encoding_rs.workspace = true
 http.workspace = true
 hashbrown = "0.16.0"
+heck.workspace = true
 indexmap = { version = "2.2.6", features = ["serde"] }
 itertools = "0.14.0"
 line-col = "0.2.1"

apollo-federation/src/connectors/json_selection/methods.rs

@@ -60,6 +60,7 @@ pub(super) enum ArrowMethod {
     Mul,
     Div,
     Mod,
+    PropertiesToCamelCase,
 
     // Future methods:
     TypeOf,
@@ -174,6 +175,7 @@ impl std::ops::Deref for ArrowMethod {
             Self::Mul => &public::MulMethod,
             Self::Div => &public::DivMethod,
             Self::Mod => &public::ModMethod,
+            Self::PropertiesToCamelCase => &public::PropertiesToCamelCaseMethod,
 
             // Future methods:
             Self::TypeOf => &future::TypeOfMethod,
@@ -231,6 +233,7 @@ impl ArrowMethod {
             "contains" => Some(Self::Contains),
             "toString" => Some(Self::ToString),
             "parseInt" => Some(Self::ParseInt),
+            "propertiesToCamelCase" => Some(Self::PropertiesToCamelCase),
             _ => None,
         };
 
@@ -278,6 +281,7 @@ impl ArrowMethod {
                 | Self::Mul
                 | Self::Div
                 | Self::Mod
+                | Self::PropertiesToCamelCase
         )
     }
 }

apollo-federation/src/connectors/json_selection/methods/public/mod.rs

@@ -51,6 +51,8 @@ mod to_string;
 pub(crate) use to_string::ToStringMethod;
 mod parse_int;
 pub(crate) use parse_int::ParseIntMethod;
+mod properties_to_camel_case;
+pub(crate) use properties_to_camel_case::PropertiesToCamelCaseMethod;
 mod contains;
 pub(crate) use contains::ContainsMethod;
 mod arithmetic;