Closed
Description
ConversionService means org.springframework.core.convert.ConversionService
My example here:
type Query {
getFoo(input: String): String
}@Controller
public class FooController {
@QueryMapping
public String getFoo(@Argument("input") @FooFormat Foo input) {
return input.getText();
}
@Getter
@Setter
@AllArgsConstructor
public static class Foo {
private final String text;
}
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.PARAMETER})
public static @interface FooFormat {
public String pattern() default "xxx";
}
@Component
public static class FooFormatFactory implements AnnotationFormatterFactory<FooFormat> {
@Override
public Set<Class<?>> getFieldTypes() {
return Collections.singleton(Foo.class);
}
@Override
public Printer<?> getPrinter(FooFormat annotation, Class<?> fieldType) {
return (Printer<Foo>) (object, locale) -> {
System.out.println("Never Show This Message. (2)");
System.out.println("Never Show This Message. (2)");
System.out.println("Never Show This Message. (2)");
return object.getText();
};
}
@Override
public Parser<?> getParser(FooFormat annotation, Class<?> fieldType) {
return (Parser<Foo>) (text, locale) -> {
System.out.println("Never Show This Message. (1)");
System.out.println("Never Show This Message. (1)");
System.out.println("Never Show This Message. (1)");
return new Foo(text);
};
}
}
}FooFormatFactory do not works. Maybe make it similar to SpringMVC is good idea?
And why Foo's constructor is invoked by spring-graphql? I know Foo has only one constructor, and it has one parameter of type String. In my opinon, a Exception throwing is more reasonable.