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Diffstat (limited to 'src/main/java/org/traccar/database/BaseObjectManager.java')
-rw-r--r--src/main/java/org/traccar/database/BaseObjectManager.java178
1 files changed, 0 insertions, 178 deletions
diff --git a/src/main/java/org/traccar/database/BaseObjectManager.java b/src/main/java/org/traccar/database/BaseObjectManager.java
deleted file mode 100644
index dd8b3bae4..000000000
--- a/src/main/java/org/traccar/database/BaseObjectManager.java
+++ /dev/null
@@ -1,178 +0,0 @@
-/*
- * 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.Collection;
-import java.util.HashSet;
-import java.util.LinkedList;
-import java.util.Map;
-import java.util.Set;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.locks.ReadWriteLock;
-import java.util.concurrent.locks.ReentrantReadWriteLock;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.traccar.model.BaseModel;
-import org.traccar.storage.StorageException;
-
-public class BaseObjectManager<T extends BaseModel> {
-
- private static final Logger LOGGER = LoggerFactory.getLogger(BaseObjectManager.class);
-
- private final ReadWriteLock lock = new ReentrantReadWriteLock();
-
- private final DataManager dataManager;
-
- private final Class<T> baseClass;
- private Map<Long, T> items;
-
- protected BaseObjectManager(DataManager dataManager, Class<T> baseClass) {
- this.dataManager = dataManager;
- this.baseClass = baseClass;
- refreshItems();
- }
-
- protected final void readLock() {
- lock.readLock().lock();
- }
-
- protected final void readUnlock() {
- lock.readLock().unlock();
- }
-
- protected final void writeLock() {
- lock.writeLock().lock();
- }
-
- protected final void writeUnlock() {
- lock.writeLock().unlock();
- }
-
- protected final DataManager getDataManager() {
- return dataManager;
- }
-
- protected final Class<T> getBaseClass() {
- return baseClass;
- }
-
- public T getById(long itemId) {
- try {
- readLock();
- return items.get(itemId);
- } finally {
- readUnlock();
- }
- }
-
- public void refreshItems() {
- if (dataManager != null) {
- try {
- writeLock();
- Collection<T> databaseItems = dataManager.getObjects(baseClass);
- if (items == null) {
- items = new ConcurrentHashMap<>(databaseItems.size());
- }
- Set<Long> databaseItemIds = new HashSet<>();
- for (T item : databaseItems) {
- databaseItemIds.add(item.getId());
- if (items.containsKey(item.getId())) {
- updateCachedItem(item);
- } else {
- addNewItem(item);
- }
- }
- for (Long cachedItemId : items.keySet()) {
- if (!databaseItemIds.contains(cachedItemId)) {
- removeCachedItem(cachedItemId);
- }
- }
- } catch (StorageException error) {
- LOGGER.warn("Error refreshing items", error);
- } finally {
- writeUnlock();
- }
- }
- }
-
- protected void addNewItem(T item) {
- try {
- writeLock();
- items.put(item.getId(), item);
- } finally {
- writeUnlock();
- }
- }
-
- public void addItem(T item) throws StorageException {
- dataManager.addObject(item);
- addNewItem(item);
- }
-
- protected void updateCachedItem(T item) {
- try {
- writeLock();
- items.put(item.getId(), item);
- } finally {
- writeUnlock();
- }
- }
-
- public void updateItem(T item) throws StorageException {
- dataManager.updateObject(item);
- updateCachedItem(item);
- }
-
- protected void removeCachedItem(long itemId) {
- try {
- writeLock();
- items.remove(itemId);
- } finally {
- writeUnlock();
- }
- }
-
- public void removeItem(long itemId) throws StorageException {
- BaseModel item = getById(itemId);
- if (item != null) {
- dataManager.removeObject(baseClass, itemId);
- removeCachedItem(itemId);
- }
- }
-
- public final Collection<T> getItems(Set<Long> itemIds) {
- Collection<T> result = new LinkedList<>();
- for (long itemId : itemIds) {
- T item = getById(itemId);
- if (item != null) {
- result.add(item);
- }
- }
- return result;
- }
-
- public Set<Long> getAllItems() {
- try {
- readLock();
- return items.keySet();
- } finally {
- readUnlock();
- }
- }
-
-}