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Description
Reason
I couldn't find an explanation for working with jsonb to make the custom field type work correctly.
https://babyfish-ct.github.io/jimmer-doc/docs/configuration/scala-provider
Description
I have custom type:
import com.fasterxml.jackson.annotation.JsonValue;
import java.io.Serializable;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
public class Translation implements Serializable {
private final Map<String, String> translation;
public Translation() {
this.translation = new HashMap<>();
}
public Translation(Map<String, String> translation) {
this.translation = new HashMap<>(translation);
}
public Translation set(String lang, String value) {
this.translation.put(lang, value);
return this;
}
public String get(String lang) {
return this.translation.get(lang);
}
@JsonValue
public Map<String, String> get() {
return Collections.unmodifiableMap(this.translation);
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Translation that = (Translation) o;
return Objects.equals(translation, that.translation);
}
@Override
public int hashCode() {
return Objects.hash(translation);
}
@Override
public String toString() {
return "Translation{" +
"translation=" + translation +
'}';
}
}Implemented and working AbstractScalarProvider
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.babyfish.jimmer.sql.runtime.AbstractScalarProvider;
import org.springframework.stereotype.Component;
@Component
public class TranslationScalarProvider extends AbstractScalarProvider<Translation, String> {
private static final ObjectMapper objectMapper = new ObjectMapper();
@Override
public Translation toScalar(String sqlValue) throws JsonProcessingException {
if (sqlValue.isEmpty()) {
return new Translation();
}
return new Translation(objectMapper.readValue(sqlValue, new TypeReference<>() {
}));
}
@Override
public String toSql(Translation scalarValue) throws JsonProcessingException {
return objectMapper.writeValueAsString(scalarValue.get());
}
@Override
public boolean isJsonScalar() { ///////////////////////// IS REQUIRED
return true; ///////////////////////// NEED TRUE
}
}My entity
@Entity
public interface Example {
/**
* Назва
*/
@Nonnull
//@Serialized ///////////////////////// REMOVE IT
Translation name();
/**
* Опис
*/
@Nonnull
//@Serialized ///////////////////////// REMOVE IT
Translation description();
}If you leave @serialized , then in the absence of isJsonScalar() it will return a value, but there will be an error when inserting the field.
Existing solutions
No response