/**
* 把list转为map 方便查找
*
* @param list 数据库有效数据列表
* @return map
*/
private <T extends TrendValue> Map<String, T> tomap(List<T> list) {
Map<String, T> map = new LinkedHashMap<>();
for (T value : list) {
map.put(value.getDate(), value);
}
return map;
}
protected T chooseLatest(T ae, String identifier) {
T chosen;
T existing = get(identifier);
final Date inputDate = ae.getDate("updated_at");
final Date existingDate = (existing == null ? null : existing.getDate("updated_at"));
if (existing == null
|| (inputDate != null && existingDate == null)
|| (inputDate != null && inputDate.after(existingDate))) {
if (mEntryList.get(identifier) instanceof SoftReference) {
mEntryList.put(identifier, new SoftReference<T>(ae));
} else {
mEntryList.put(identifier, new WeakReference<T>(ae));
}
chosen = ae;
} else {
chosen = existing;
}
return chosen;
}