Can't use @Mapping#source for map keys containg the dot character #3066
Description
Expected behavior
Using the new map->bean mapping feature it is not possible to use @Mapping#source for keys containing a . character. Instead, the Map type itself seems to be considered as the source type and its methods are proposed as alternatives.
It's still possible to achieve that with expression of course (as in the commented out line in the example), but it's far less elegant as just using the source.
Actual behavior
error: No property named "a.b" exists in source parameter(s). Did you mean "a.bytes"?
@Mapping(target = "value", source = "a.b")
Steps to reproduce the problem
package com.example;
import org.junit.jupiter.api.Test;
import org.mapstruct.Mapper;
import org.mapstruct.Mapping;
import org.mapstruct.factory.Mappers;
import java.util.Map;
import static org.assertj.core.api.Assertions.assertThat;
class MapstructExampleTest {
public static record ExampleBean(String value) { }
@Mapper
public interface ExampleMapper {
@Mapping(target = "value", source = "a.b")
//@Mapping(target = "value", expression = "java(source.get(\"a.b\"))")
ExampleBean map(Map<String, String> source);
}
@Test
void shouldMapToBean() {
Map<String, String> source = Map.of("a.b", "test");
var output = Mappers.getMapper(ExampleMapper.class).map(source);
assertThat(output.value()).isEqualTo("test");
}
}
MapStruct Version
1.5.3