/*
* (non-Javadoc)
*
* @see org.hamster.core.api.util.difference.walker.Walker#walkForAdded(java.util.Map, java.util.Collection)
*/
@Override
public Collection<T> walkForAdded(
Map<K, T> sourceMap, Collection<T> targetColl, Map<String, Method> methods) {
List<T> result = Lists.newArrayList();
for (T target : targetColl) {
K id = idInvoker.invoke(methods, target);
if (id == null || !sourceMap.containsKey(id)) {
result.add(target);
}
}
return result;
}
/*
* (non-Javadoc)
*
* @see org.hamster.core.api.util.difference.walker.Walker#walkForRemoved(java.util.Map, java.util.Collection)
*/
@Override
public Map<K, T> walkForRemoved(
Map<K, T> sourceMap, Collection<T> targetColl, Map<String, Method> methods) {
Map<K, T> result = Maps.newHashMap();
Set<K> keys = Sets.newHashSet();
for (T target : targetColl) {
K id = idInvoker.invoke(methods, target);
keys.add(id);
}
for (Map.Entry<K, T> sourceEntry : sourceMap.entrySet()) {
if (!keys.contains(sourceEntry.getKey())) {
result.put(sourceEntry.getKey(), sourceEntry.getValue());
}
}
return result;
}