feat(codegen): ObjectTypeGenerator: skip field definitions with "kResolver" directive

Author: WipeAir

graphql-kotlin-toolkit-codegen/src/main/kotlin/com/auritylab/graphql/kotlin/toolkit/codegen/generator/ObjectTypeGenerator.kt

@@ -3,6 +3,7 @@ package com.auritylab.graphql.kotlin.toolkit.codegen.generator
 import com.auritylab.graphql.kotlin.toolkit.codegen.CodegenOptions
 import com.auritylab.graphql.kotlin.toolkit.codegen.mapper.GeneratedMapper
 import com.auritylab.graphql.kotlin.toolkit.codegen.mapper.KotlinTypeMapper
+import com.auritylab.graphql.kotlin.toolkit.common.directive.DirectiveFacade
 import com.squareup.kotlinpoet.ClassName
 import com.squareup.kotlinpoet.FileSpec
 import com.squareup.kotlinpoet.FunSpec
@@ -42,10 +43,12 @@ internal class ObjectTypeGenerator(
     }
 
     private fun buildProperties(fields: Collection<GraphQLFieldDefinition>): Collection<PropertySpec> {
-        return fields.map {
-            PropertySpec.builder(it.name, getKotlinType(it.type))
-                .initializer(it.name)
-                .build()
-        }
+        return fields
+            .filter { !DirectiveFacade.resolver[it] }
+            .map {
+                PropertySpec.builder(it.name, getKotlinType(it.type))
+                    .initializer(it.name)
+                    .build()
+            }
     }
 }

graphql-kotlin-toolkit-codegen/src/test/kotlin/com/auritylab/graphql/kotlin/toolkit/codegen/generator/ObjectTypeGeneratorTest.kt

@@ -3,6 +3,7 @@ package com.auritylab.graphql.kotlin.toolkit.codegen.generator
 import com.auritylab.graphql.kotlin.toolkit.codegen._test.AbstractCompilationTest
 import com.auritylab.graphql.kotlin.toolkit.codegen._test.TestObject
 import graphql.Scalars
+import graphql.schema.GraphQLDirective
 import graphql.schema.GraphQLFieldDefinition
 import graphql.schema.GraphQLObjectType
 import org.junit.jupiter.api.Assertions
@@ -36,6 +37,8 @@ internal class ObjectTypeGeneratorTest : AbstractCompilationTest() {
 
         Assertions.assertEquals("name", memberProperties[0].name)
         Assertions.assertEquals("number", memberProperties[1].name)
+
+        // "hasResolver" MUST NOT be present as it's annotated with kResolver.
     }
 }
 
@@ -50,4 +53,10 @@ val testObjectType = GraphQLObjectType.newObject()
             .name("number")
             .type(Scalars.GraphQLInt)
     )
+    .field(
+        GraphQLFieldDefinition.newFieldDefinition()
+            .name("hasResolver")
+            .type(Scalars.GraphQLInt)
+            .withDirective(GraphQLDirective.newDirective().name("kResolver"))
+    )
     .build()