2012/9/21 Miguel Almeida <mig...@almeida.at>:
> Sure!
>
> Here's a maven project with a failing test case.
>
> There's actually a map being built, but it's a <String,String>, and the key
> reads "OGNL no conversion possible".
Got it working, but I think the main problem is with key value - it
isn't a simple string but an int that must be converted to complex
class Entity.
First thing, in TypeConversionAction-conversion.properties just put:
Key_simpleMap=test.example.Entity
Element_simpleMap=java.lang.String
CreateIfNull_codePropertyMap=true
Next create xwork-conversion.properties in the root folder
(src/java/resources) with:
test.example.Entity=test.example.EntityConverter
And the very end create EntityConverter (Struts2 must know how to
convert int into Entity)
public class EntityConverter extends StrutsTypeConverter {
@Override
public Object convertFromString(Map context, String[] values,
Class toClass) {
if (values != null && values.length > 0) {
Entity entity = new Entity();
entity.setId(Integer.parseInt(values[0]));
return entity;
}
return null;
}
@Override
public String convertToString(Map context, Object o) {
if (o != null) {
return "" + ((Entity) o).getId();
}
return null;
}
@Override
public Object convertValue(Map context, Object o, Class toClass) {
if (toClass == Entity.class) {
return convertFromString(context, new
String[]{o.toString()}, toClass);
}
return super.convertValue(context, o, toClass);
}
}
The problem is in convertValue() method which supports only String
based conversions (but simpleMap[1] => key = 1 was already converted
to int) - and I'm thinking that the method should be changed from
public Object convertValue(Map context, Object o, Class toClass) {
if (toClass.equals(String.class)) {
return convertToString(context, o);
} else if (o instanceof String[]) {
return convertFromString(context, (String[]) o, toClass);
} else if (o instanceof String) {
return convertFromString(context, new String[]{(String)
o}, toClass); // <-- problematic line
} else {
return performFallbackConversion(context, o, toClass);
}
}
to
public Object convertValue(Map context, Object o, Class toClass) {
if (toClass.equals(String.class)) {
return convertToString(context, o);
} else if (o instanceof String[]) {
return convertFromString(context, (String[]) o, toClass);
// <-- changed
} else {
return convertFromString(context, new
String[]{o.toString()}, toClass);
}
}
I've been using Struts 2.3.5-SNAPSHOT
Kind regards
--
Łukasz
+ 48 606 323 122 http://www.lenart.org.pl/
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