From c79c71a734da5cb4c84dd660744e58675b1d6fb7 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton@traccar.org>
Date: Sat, 18 Jun 2022 13:23:16 -0700
Subject: Remove device manager

---
 .../org/traccar/database/BaseObjectManager.java    | 174 ---------------------
 1 file changed, 174 deletions(-)
 delete mode 100644 src/main/java/org/traccar/database/BaseObjectManager.java

(limited to 'src/main/java/org/traccar/database/BaseObjectManager.java')

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 c94053985..000000000
--- a/src/main/java/org/traccar/database/BaseObjectManager.java
+++ /dev/null
@@ -1,174 +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;
-    }
-
-    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();
-        }
-    }
-
-}
-- 
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