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/*
* Copyright 2017 - 2020 Anton Tananaev (anton@traccar.org)
* Copyright 2017 Andrey Kunitsyn (andrey@traccar.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.traccar.database;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.Context;
import org.traccar.model.BaseModel;
import org.traccar.model.Permission;
import org.traccar.model.User;
import org.traccar.storage.StorageException;
public abstract class SimpleObjectManager<T extends BaseModel> extends BaseObjectManager<T> {
private static final Logger LOGGER = LoggerFactory.getLogger(SimpleObjectManager.class);
private Map<Long, Set<Long>> userItems;
protected SimpleObjectManager(DataManager dataManager, Class<T> baseClass) {
super(dataManager, baseClass);
}
public final Set<Long> getUserItems(long userId) {
try {
readLock();
Set<Long> result = userItems.get(userId);
if (result != null) {
return new HashSet<>(result);
} else {
return new HashSet<>();
}
} finally {
readUnlock();
}
}
public Set<Long> getManagedItems(long userId) {
Set<Long> result = getUserItems(userId);
for (long managedUserId : Context.getUsersManager().getUserItems(userId)) {
result.addAll(getUserItems(managedUserId));
}
return result;
}
public final boolean checkItemPermission(long userId, long itemId) {
return getUserItems(userId).contains(itemId);
}
@Override
public void refreshItems() {
super.refreshItems();
refreshUserItems();
}
public final void refreshUserItems() {
if (getDataManager() != null) {
try {
writeLock();
userItems = new ConcurrentHashMap<>();
for (Permission permission : getDataManager().getPermissions(User.class, getBaseClass())) {
Set<Long> items = userItems.computeIfAbsent(permission.getOwnerId(), key -> new HashSet<>());
items.add(permission.getPropertyId());
}
} catch (StorageException | ClassNotFoundException error) {
LOGGER.warn("Error getting permissions", error);
} finally {
writeUnlock();
}
}
}
@Override
public void removeItem(long itemId) throws StorageException {
super.removeItem(itemId);
refreshUserItems();
}
}
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