public boolean mapField(Object sourceObj, Object destObj, Object sourceFieldValue, ClassMap classMap, FieldMap fieldMapping) {
boolean result = false;
if (!(sourceObj instanceof SimpleObj)) {
throw new MappingException("Unsupported source object type. Should be of type: SimpleObj");
}
if (!(destObj instanceof SimpleObjPrime)) {
throw new MappingException("Unsupported dest object type. Should be of type: SimpleObjPrime");
}
if (fieldMapping.getSrcFieldName().equals("field1")) {
((SimpleObjPrime) destObj).setField1(FIELD_VALUE);
result = true;