I am struggling with a Dozer mapping. I would like to convert a java.util.Map
to a java.util.List<Code>
. My classes are implemented as follows.
public class A {
private List<Code> values;
}
class B {
private Map<String, String> values;
}
class Code {
private String key;
private String value;
// getter & setter ommitted
}
My mapping looks as follows.
<mapping wildcard="true">
<class-a>A</class-a>
<class-b>B</class-b>
<field custom-converter="ABCustomConverter">
<a>values</a>
<b>values</b>
</field>
</mapping>
The custom converter.
public class ABCustomConverter extends DozerConverter<List<Code>, Map<String, String>> {
public ABCustomConverter () {
super((Class<List<Code>>) (Class<?>) List.class, (Class<Map<String, String>>) (Class<?>) List.class);
}
@Override
public Map<String, String> convertTo(List<Code> source, Map<String, String> destination) {
throw new NotImplementedException();
}
@Override
public List<Code> convertFrom(Map<String, String> source, List<Code> destination) {
if (source == null) return null;
List<Code> modelList = Lists.newArrayListWithCapacity(source.size());
for (String key : source.keySet()) {
Code model = new Code();
model.setKey(key);
model.setValue(source.get(key));
modelList.add(model);
}
return modelList;
}
}
My custom converter always receives a null
value when convertForm
is called. For some reason Dozer tries to get the key values
from my java.util.Map
and this results, as expected, in a null
value that is forwarded to my custom converter. But I would like to get the whole map forwarded to my converter. Can someone explain me how to achieve this custom mapping?
The answer is to provide some hints for Dozer.
<mapping wildcard="true">
<class-a>A</class-a>
<class-b>B</class-b>
<field custom-converter="ABCustomConverter">
<a>values</a>
<b>values</b>
<a-hint>java.util.LinkedHashMap</a-hint>
<b-hint>java.util.ArrayList</b-hint>
</field>
</mapping>
Thank you for helping me out!
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