EnumValues cannot be used directiveAnnotationsMapping.

[michael-simons]

Issue Description

I cannot use directiveAnnotationsMapping with directives spotting enum values.

Code generation will fail during issues with the ValueMapper.

Steps to Reproduce

Given

type Actor {
    name: String
    movies: [Movie] @relationship(type: "ACTED_IN", direction: OUT)
}

with a custom directive @relationship, using enum OUT on attribute direction

And the following config

<directiveAnnotationsMapping>
	<relationship>
		<f>@org.springframework.data.neo4j.core.schema.Relationship(type = {{type}}, direction = {{direction}})</f>
	</relationship>
</directiveAnnotationsMapping>

Expected Result

I expect the following generated code:

@org.springframework.data.neo4j.core.schema.Relationship(type = "ACTED_IN", direction = OUT)
private java.util.List<Movie> movies;

Actual Result

Value Mapper fails:

java.lang.IllegalArgumentException: Unexpected Enum value for list type
at com.kobylynskyi.graphql.codegen.mapper.ValueMapper.mapEnum (ValueMapper.java:132)
at com.kobylynskyi.graphql.codegen.mapper.ValueMapper.map (ValueMapper.java:110)

When using a custom annotation mapping, the GraphQLTypeMapper will always call com.kobylynskyi.graphql.codegen.mapper.ValueMapper#map(com.kobylynskyi.graphql.codegen.model.MappingContext, graphql.language.Value<?>, graphql.language.Type<?>, java.lang.String) with an argument of null for the GraphQL type from

com.kobylynskyi.graphql.codegen.mapper.GraphQLTypeMapper#getAnnotationsForDirective which will eventually trigger the illegal argument exception in com.kobylynskyi.graphql.codegen.mapper.ValueMapper#mapEnum.

Your Environment and Setup

Maven,

<plugin>
    <groupId>io.github.kobylynskyi</groupId>
    <artifactId>graphql-codegen-maven-plugin</artifactId>
    <version>5.1.0</version>
    <executions>
	    <execution>
		    <goals>
			    <goal>generate</goal>
		    </goals>
		    <configuration>
			    <!-- all config options:
			    https://github.com/kobylynskyi/graphql-java-codegen/blob/master/docs/codegen-options.md
			    -->
			    <graphqlSchemas>
				    <includePattern>schema\.graphqls</includePattern>
			    </graphqlSchemas>
			    <outputDir>${project.build.directory}/generated-sources/graphql</outputDir>
			    <packageName>io.github.kobylynskyi.bikeshop.graphql.model</packageName>
			    <customTypesMapping>
				    <DateTime>java.util.Date</DateTime>
				    <Price.amount>java.math.BigDecimal</Price.amount>
			    </customTypesMapping>
			    <customAnnotationsMapping>
				    <EpochMillis>
					    <annotation>com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = com.example.json.EpochMillisScalarDeserializer.class)</annotation>
				    </EpochMillis>
			    </customAnnotationsMapping>
			    <modelNameSuffix />
			    <generateBuilder>false</generateBuilder>
			    <generateImmutableModels>true</generateImmutableModels>
			    <directiveAnnotationsMapping>
				    <relationship>
			    <f>
				    @org.springframework.data.neo4j.core.schema.Relationship(type = {{type}})
			    </f>
				    </relationship>
			    </directiveAnnotationsMapping>
			    <customTypesMapping>
				    <OUT>org.springframework.data.neo4j.core.schema.Relationship.Direction.OUTGOING</OUT>
				    <IN>org.springframework.data.neo4j.core.schema.Relationship.Direction.OUTGOING</IN>
			    </customTypesMapping>
		    </configuration>
	    </execution>
    </executions>
    </plugin>

See my custom type mappings: It doesn't even look at those as the mapper fails before that.

[michael-simons]

My full scheme:

enum Direction {
    OUT
    IN
}

directive @relationship (
    type: String
    direction: Direction
) on FIELD_DEFINITION

type Actor {
    name: String
    movies: [Movie] @relationship(type: "ACTED_IN", direction: OUT)
}

type Movie {
    id: ID
    title: String
    actors: [Actor] @relationship(type: "ACTED_IN", direction: IN)
    topActor: Actor @relationship(type: "TOP_ACTOR", direction: OUT)
}

[kobylynskyi]

Will soon be released as part of 5.3.0. Thanks for your patience.