feat: add support for ARGUMENT_DEFINITION

README.md

@@ -31,19 +31,19 @@ Abbreviates a string using ellipses for a given width
 
 Converts the String into camelCase
 
-- SDL: `directive @camelcase on FIELD_DEFINITION`
+- SDL: `directive @camelcase on FIELD_DEFINITION | ARGUMENT_DEFINITION`
 
 ### @capitalize
 
 Capitalize the starting letter for each word in a String
 
-- SDL: `directive @capitalize on FIELD_DEFINITION`
+- SDL: `directive @capitalize on FIELD_DEFINITION | ARGUMENT_DEFINITION`
 
 ### @lowercase
 
 Lowercase all characters in a String
 
-- SDL: `directive @lowercase on FIELD_DEFINITION`
+- SDL: `directive @lowercase on FIELD_DEFINITION | ARGUMENT_DEFINITION`
 
 ### @prefix
 
@@ -62,7 +62,7 @@ which will be encoded into the ID.
 
 Reverse the characters in a String
 
-- SDL: `directive @reverse on FIELD_DEFINITION`
+- SDL: `directive @reverse on FIELD_DEFINITION | ARGUMENT_DEFINITION`
 
 ### @suffix
 
@@ -74,19 +74,19 @@ Appends a suffix to a String
 
 Invert the case of each character in a String
 
-- SDL: `directive @swapcase on FIELD_DEFINITION`
+- SDL: `directive @swapcase on FIELD_DEFINITION | ARGUMENT_DEFINITION`
 
 ### @trim
 
 Remove any leading or trailing whitespace
 
-- SDL: `directive @trim on FIELD_DEFINITION`
+- SDL: `directive @trim on FIELD_DEFINITION | ARGUMENT_DEFINITION`
 
 ### @uppercase
 
 Uppercase each character in a String
 
-- SDL: `directive @uppercase on FIELD_DEFINITION`
+- SDL: `directive @uppercase on FIELD_DEFINITION | ARGUMENT_DEFINITION`
 
 ## Numeric Formatters
 
@@ -96,16 +96,16 @@ The following schema directives support formatting `Int` or `Float` scalars
 
 Returns the absolute value
 
-- SDL: `directive @absolute on FIELD_DEFINITION`
+- SDL: `directive @absolute on FIELD_DEFINITION | ARGUMENT_DEFINITION`
 
 ### @ceiling
 
 Returns the ceiling value
 
-- SDL: `directive @ceiling on FIELD_DEFINITION`
+- SDL: `directive @ceiling on FIELD_DEFINITION | ARGUMENT_DEFINITION`
 
 ### @floor
 
 Returns the floor value
 
-- SDL: `directive @floor on FIELD_DEFINITION`
+- SDL: `directive @floor on FIELD_DEFINITION | ARGUMENT_DEFINITION`

dgs-extended-formatters/src/main/java/io/github/setchy/dgs/formatters/AbstractFormatterDirective.java

@@ -1,26 +1,31 @@
 package io.github.setchy.dgs.formatters;
 
-import graphql.schema.DataFetcher;
-import graphql.schema.DataFetcherFactories;
-import graphql.schema.GraphQLFieldDefinition;
-import graphql.schema.GraphQLFieldsContainer;
+import graphql.schema.*;
 import graphql.schema.idl.SchemaDirectiveWiring;
 import graphql.schema.idl.SchemaDirectiveWiringEnvironment;
 
 public abstract class AbstractFormatterDirective implements SchemaDirectiveWiring {
 
     @Override
     public GraphQLFieldDefinition onField(SchemaDirectiveWiringEnvironment<GraphQLFieldDefinition> env) {
-        GraphQLFieldDefinition field = env.getElement();
+        return registerDataFetcher(env);
+    }
+
+    @Override
+    public GraphQLArgument onArgument(SchemaDirectiveWiringEnvironment<GraphQLArgument> env) {
+        return registerDataFetcher(env);
+    }
+
+    private <T extends GraphQLDirectiveContainer> T registerDataFetcher(SchemaDirectiveWiringEnvironment<T> env) {
+        GraphQLFieldDefinition field = env.getFieldDefinition();
         GraphQLFieldsContainer fieldsContainer = env.getFieldsContainer();
         DataFetcher<?> originalDataFetcher = env.getFieldDataFetcher();
 
         DataFetcher<?> dataFetcher =
                 DataFetcherFactories.wrapDataFetcher(originalDataFetcher, ((dataFetchingEnvironment, value) -> format(field, value)));
 
-        env.getCodeRegistry()
-                .dataFetcher(fieldsContainer, field, dataFetcher);
-        return field;
+        env.getCodeRegistry().dataFetcher(fieldsContainer, field, dataFetcher);
+        return env.getElement();
     }
 
     public abstract Object format(GraphQLFieldDefinition field, Object value);

dgs-extended-formatters/src/test/java/io/github/setchy/dgs/formatters/DirectivesIntegrationTest.java

@@ -22,10 +22,11 @@ class DirectivesIntegrationTest {
     private static GraphQLSchema buildSchema() {
         String sdlSpec = """
                 directive @absolute on FIELD_DEFINITION
-                directive @uppercase on FIELD_DEFINITION
+                directive @uppercase on FIELD_DEFINITION | ARGUMENT_DEFINITION
 
                 type Query {
                   helloWorld : String
+                  hello(arg: String @uppercase) : String
                   helloWorldShouting : String @uppercase
                   negativeNumber: Int
                   absoluteNumber: Int @absolute
@@ -48,13 +49,15 @@ void testAbstractDirectiveCallsFormat() {
         GraphQL graphql = GraphQL.newGraphQL(schema).build();
 
         Map<String, Object> root = new HashMap<>();
+        root.put("hello", "world");
         root.put("helloWorld", "Hello World");
         root.put("helloWorldShouting", "Hello World");
         root.put("negativeNumber", -100);
         root.put("absoluteNumber", -100);
 
         String query = """
                 query {
+                    hello(arg: "world")
                     helloWorld
                     helloWorldShouting
                     negativeNumber
@@ -69,6 +72,7 @@ void testAbstractDirectiveCallsFormat() {
         ExecutionResult executionResult = graphql.execute(executionInput);
         Map<String, Object> data = executionResult.getData();
 
+        assertEquals("WORLD", data.get("hello"));
         assertEquals("Hello World", data.get("helloWorld"));
         assertEquals("HELLO WORLD", data.get("helloWorldShouting"));
         assertEquals(-100, data.get("negativeNumber"));

samples/src/main/java/io/github/setchy/dgs/formatters/sample/FormattedIntegerExamplesDataFetcher.java

@@ -2,7 +2,6 @@
 
 import com.netflix.graphql.dgs.DgsComponent;
 import com.netflix.graphql.dgs.DgsData;
-import com.netflix.graphql.dgs.DgsDataFetchingEnvironment;
 
 @DgsComponent
 public class FormattedIntegerExamplesDataFetcher {
@@ -13,7 +12,7 @@ public class FormattedIntegerExamplesDataFetcher {
     @DgsData(parentType = "FormattedIntegerExamples", field = "absolute")
     @DgsData(parentType = "FormattedIntegerExamples", field = "ceiling")
     @DgsData(parentType = "FormattedIntegerExamples", field = "floored")
-    public Integer exampleData(DgsDataFetchingEnvironment dfe) {
+    public Integer exampleData() {
         return SAMPLE_DATA;
     }
 }

samples/src/main/java/io/github/setchy/dgs/formatters/sample/FormattedStringExamplesDataFetcher.java

@@ -2,7 +2,6 @@
 
 import com.netflix.graphql.dgs.DgsComponent;
 import com.netflix.graphql.dgs.DgsData;
-import com.netflix.graphql.dgs.DgsDataFetchingEnvironment;
 
 @DgsComponent
 public class FormattedStringExamplesDataFetcher {
@@ -22,7 +21,7 @@ public class FormattedStringExamplesDataFetcher {
     @DgsData(parentType = "FormattedStringExamples", field = "resourceId")
     @DgsData(parentType = "FormattedStringExamples", field = "prefixed")
     @DgsData(parentType = "FormattedStringExamples", field = "suffixed")
-    public String exampleData(DgsDataFetchingEnvironment dfe) {
+    public String exampleData() {
         return SAMPLE_DATA;
     }
 }

samples/src/main/java/io/github/setchy/dgs/formatters/sample/QueryDataFetcher.java

@@ -11,6 +11,11 @@ public FormattedStringExamples formattedStrings() {
         return new FormattedStringExamples();
     }
 
+    @DgsQuery
+    public FormattedArgsExamples formattedArgs() {
+        return new FormattedArgsExamples();
+    }
+
     @DgsQuery
     public FormattedIntegerExamples formattedIntegers() {
         return new FormattedIntegerExamples();
@@ -24,6 +29,9 @@ public FormattedFloatExamples formattedFloats() {
     public static class FormattedStringExamples {
     }
 
+    public static class FormattedArgsExamples {
+    }
+
     public static class FormattedIntegerExamples {
     }
 

samples/src/main/resources/schema/schema.graphqls

@@ -1,23 +1,24 @@
 # String Formatters
-directive @uppercase on FIELD_DEFINITION
-directive @lowercase on FIELD_DEFINITION
-directive @trim on FIELD_DEFINITION
-directive @capitalize on FIELD_DEFINITION
-directive @reverse on FIELD_DEFINITION
-directive @swapcase on FIELD_DEFINITION
+directive @uppercase on FIELD_DEFINITION | ARGUMENT_DEFINITION
+directive @lowercase on FIELD_DEFINITION | ARGUMENT_DEFINITION
+directive @trim on FIELD_DEFINITION | ARGUMENT_DEFINITION
+directive @capitalize on FIELD_DEFINITION | ARGUMENT_DEFINITION
+directive @reverse on FIELD_DEFINITION | ARGUMENT_DEFINITION
+directive @swapcase on FIELD_DEFINITION | ARGUMENT_DEFINITION
 directive @abbreviate(width: Int!) on FIELD_DEFINITION
-directive @camelcase on FIELD_DEFINITION
+directive @camelcase on FIELD_DEFINITION | ARGUMENT_DEFINITION
 directive @resourceId(domain: String!, subdomain: String!, systemName: String!) on FIELD_DEFINITION
 directive @prefix(with: String!) on FIELD_DEFINITION
 directive @suffix(with: String!) on FIELD_DEFINITION
 
 # Numeric Formatters
-directive @absolute on FIELD_DEFINITION
-directive @ceiling on FIELD_DEFINITION
-directive @floor on FIELD_DEFINITION
+directive @absolute on FIELD_DEFINITION | ARGUMENT_DEFINITION
+directive @ceiling on FIELD_DEFINITION | ARGUMENT_DEFINITION
+directive @floor on FIELD_DEFINITION | ARGUMENT_DEFINITION
 
 type Query {
     formattedStrings: FormattedStringExamples
+    formattedArgs: FormattedArgsExamples
     formattedIntegers: FormattedIntegerExamples
     formattedFloats: FormattedFloatExamples
 }
@@ -38,6 +39,25 @@ type FormattedStringExamples {
     suffixed: String @suffix(with: "- suffix")
 }
 
+type FormattedArgsExamples {
+    original(arg: String!): String
+    uppercased(arg: String! @uppercase): String
+    lowercased(arg: String! @lowercase): String
+    trimmed(arg: String! @trim): String
+    trimmedUppercased(arg: String! @uppercase @trim): String
+    capitalized(arg: String! @capitalize): String
+    reversed(arg: String! @reverse): String
+    swapcased(arg: String! @swapcase): String
+    camelcased(arg: String! @camelcase): String
+    absoluteInt(arg: Int! @absolute): Int
+    ceilingInt(arg: Int! @ceiling): Int
+    flooredInt(arg: Int! @floor): Int
+    absoluteFloat(arg: Float! @absolute): Float
+    ceilingFloat(arg: Float! @ceiling): Float
+    flooredFloat(arg: Float! @floor): Float
+
+}
+
 type FormattedIntegerExamples {
     original: Int
     absolute: Int @absolute