Nomin Mapper Framework for Groovy

Question

I am looking for a mapping framework for my Spring/Groovy application. I found Nomin - it looks like something that fits my need. But I have the following issue: it doesn't find my mapping rules script in my test class.

in src/main/groovy/mypackage/entity2entitydto.groovy:

import org.nomin.entity.*

mappingFor a: Entity,  b: EntityDto
a.name      =       b.name

in src/test/groovy/mypackage/Entity2EntityDtoTest.groovy:

public class CoinMarketCap2CoinTest {
    NominMapper nomin = new Nomin("entity2entitydto.groovy");

    // also tried entity2entitydto, Entity2entitydto, Entity2entitydto.groovy
    // also tried with full package name
    // also tried File Name Entity2entitydto.groovy

    @Test
    public void test() {
        // Testing ...
    }

}

Result after gradle clean build --stacktrace

org.nomin.core.NominException: Specified resource entity2entitydto.groovy isn't found!
...

Someone any idea or suggestions about mapping frameworks which works fine with groovy. Thanks in advance.

Answer 1

Nomin throws this exception, because your script is not in the classpath. Move your entity2entitydto.groovy file to src/main/resources so Nomin can load your mapping script from the classpath correctly.

Secondly, make sure you import correct classes in your mapping script. For example, if I have mypackage.Entity and mypackage.EntityDto class then I can import both of them like:

import mypackage.Entity
import mypackage.EntityDto

mappingFor a: Entity,  b: EntityDto
a.name      =       b.name

Instead you have to use full canonical names like:

mappingFor a: mypackage.Entity,  b: mypackage.EntityDto
a.name      =       b.name

You can also take a look at this very basic and simple example created basing on your question - https://github.com/wololock/nomin-example

Hope it helps.