| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * 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 com.android.server.wifi.util; |
| |
| import android.annotation.Nullable; |
| import android.content.Context; |
| import android.net.wifi.WifiMigration; |
| |
| /** |
| * Holder for storing the migration settings data retrieved from |
| * {@link android.net.wifi.WifiMigration#loadFromSettings(Context)} to avoid invoking the method |
| * multiple times. |
| */ |
| public class SettingsMigrationDataHolder { |
| private final Context mContext; |
| private WifiMigration.SettingsMigrationData mData = null; |
| private boolean mRetrieved = false; |
| |
| public SettingsMigrationDataHolder(Context context) { |
| mContext = context; |
| } |
| |
| private void retrieveDataIfNecessary() { |
| if (mRetrieved) return; |
| mData = WifiMigration.loadFromSettings(mContext); |
| mRetrieved = true; |
| } |
| |
| /** |
| * Retrieve the cached data returned from {@link WifiMigration#loadFromSettings(Context)}. |
| */ |
| @Nullable |
| public WifiMigration.SettingsMigrationData retrieveData() { |
| retrieveDataIfNecessary(); |
| return mData; |
| } |
| } |