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a java development framework with aggregation, repository and process
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package arp.repository;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
public abstract class PersistenceRepository extends Repository {
@Override
protected E findByIdForUpdateFromStore(I id) {
E entity = findByIdForUpdateImpl(id);
return entity;
}
protected abstract E findByIdForUpdateImpl(I id);
@Override
protected E findByIdFromStore(I id) {
return findByIdImpl(id);
}
protected abstract E findByIdImpl(I id);
@Override
protected E saveIfAbsentToStore(I id, E entity) {
entity = saveIfAbsentImpl(id, entity);
return entity;
}
// 存完要获得锁，相当于随后findByIdForUpdate
protected abstract E saveIfAbsentImpl(I id, E entity);
@Override
protected void removeAllToStore(Set ids) {
if (ids.isEmpty()) {
return;
}
if (ids.size() == 1) {
removeImpl(ids.iterator().next());
} else {
removeBatchImpl(ids);
}
}
@Override
protected void updateAllToStore(Map entities) {
I oneId = null;
E oneEntity = null;
for (Entry entry : entities.entrySet()) {
I id = entry.getKey();
oneId = id;
E entity = entry.getValue();
oneEntity = entity;
}
if (entities.isEmpty()) {
return;
}
if (entities.size() == 1) {
updateImpl(oneId, oneEntity);
} else {
updateBatchImpl(entities);
}
}
protected abstract void updateBatchImpl(Map entitiesToUpdate);
protected abstract void updateImpl(I id, E entity);
@Override
protected void saveAllToStore(Map entities) {
if (entities.isEmpty()) {
return;
}
if (entities.size() == 1) {
I oneId = null;
E oneEntity = null;
for (I id : entities.keySet()) {
oneId = id;
oneEntity = entities.get(id);
}
saveImpl(oneId, oneEntity);
} else {
saveBatchImpl(entities);
}
}
@Override
protected void unlockAllToStore(Set ids) {
if (ids.isEmpty()) {
return;
}
if (ids.size() == 1) {
unlockImpl(ids.iterator().next());
} else {
unlockBatchImpl(ids);
}
}
protected abstract void saveBatchImpl(Map entities);
protected abstract void saveImpl(I id, E entity);
// 别忘了也要一并删除锁
protected abstract void removeBatchImpl(Set ids);
// 别忘了也要一并删除锁
protected abstract void removeImpl(I id);
protected abstract void unlockBatchImpl(Set ids);
protected abstract void unlockImpl(I id);
}