1 files changed, 79 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/storage/MemoryStorage.java b/src/main/java/org/traccar/storage/MemoryStorage.java
new file mode 100644
index 000000000..f19897ff8
--- /dev/null
+++ b/src/main/java/org/traccar/storage/MemoryStorage.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2022 Anton Tananaev (anton@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.storage;
+
+import org.traccar.model.BaseModel;
+import org.traccar.model.Pair;
+import org.traccar.model.Permission;
+import org.traccar.storage.query.Request;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public class MemoryStorage extends Storage {
+
+    private final Map<Pair<Class<?>, Class<?>>, Set<Pair<Long, Long>>> permissions = new HashMap<>();
+
+    @Override
+    public <T> List<T> getObjects(Class<T> clazz, Request request) {
+        return null;
+    }
+
+    @Override
+    public <T> long addObject(T entity, Request request) {
+        return 0;
+    }
+
+    @Override
+    public <T> void updateObject(T entity, Request request) {
+    }
+
+    @Override
+    public void removeObject(Class<?> clazz, Request request) {
+    }
+
+    private Set<Pair<Long, Long>> getPermissionsSet(Class<?> ownerClass, Class<?> propertyClass) {
+        return permissions.computeIfAbsent(new Pair<>(ownerClass, propertyClass), k -> new HashSet<>());
+    }
+
+    @Override
+    public List<Permission> getPermissions(
+            Class<? extends BaseModel> ownerClass, long ownerId,
+            Class<? extends BaseModel> propertyClass, long propertyId) {
+        return getPermissionsSet(ownerClass, propertyClass).stream()
+                .filter(pair -> ownerId == 0 || pair.getFirst().equals(ownerId))
+                .filter(pair -> propertyId == 0 || pair.getSecond().equals(propertyId))
+                .map(pair -> new Permission(ownerClass, pair.getFirst(), propertyClass, pair.getSecond()))
+                .collect(Collectors.toList());
+    }
+
+    @Override
+    public void addPermission(Permission permission) {
+        getPermissionsSet(permission.getOwnerClass(), permission.getPropertyClass())
+                .add(new Pair<>(permission.getOwnerId(), permission.getPropertyId()));
+    }
+
+    @Override
+    public void removePermission(Permission permission) {
+        getPermissionsSet(permission.getOwnerClass(), permission.getPropertyClass())
+                .remove(new Pair<>(permission.getOwnerId(), permission.getPropertyId()));
+    }
+
+}