eu.unicore.persist.util.GSONUtil Maven / Gradle / Ivy
package eu.unicore.persist.util;
import com.google.gson.GsonBuilder;
public class GSONUtil {
private GSONUtil(){}
/**
* register any GSON type converters that the class may expose
* @param daoClass
* @param builder
*/
public static void registerTypeConverters(Class daoClass, GsonBuilder builder){
JSON json = daoClass.getAnnotation(JSON.class);
if(json!=null && json.customHandlers().length>0){
for(Class c: json.customHandlers()){
try{
GSONConverter conv=(GSONConverter)c.getConstructor().newInstance();
for(Object adapter: conv.getAdapters()){
if(conv.isHierarchy()){
builder.registerTypeHierarchyAdapter((Class)conv.getType(),adapter);
}
else{
builder.registerTypeAdapter(conv.getType(),adapter);
}
}
}catch(Exception ex){
throw new IllegalStateException(ex);
}
}
}
}
}