初始代码提交

2026-01-14 10:36:27 +08:00
parent 600aa4dbb0
commit 196cacfe5a
268 changed files with 22545 additions and 2 deletions
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2024 ObjectBox Ltd. All rights reserved.
+ *
+ * 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.sw.inbound.objbox
+
+import android.content.Context
+import android.util.Log
+import io.objectbox.BoxStore
+import io.objectbox.BoxStoreBuilder
+import io.objectbox.exception.DbException
+import io.objectbox.exception.FileCorruptException
+import io.objectbox.sync.Sync
+import java.io.File
+import java.util.zip.GZIPOutputStream
+import kotlin.io.copyTo
+import kotlin.io.inputStream
+import kotlin.io.outputStream
+import kotlin.io.use
+import kotlin.jvm.java
+import kotlin.jvm.javaClass
+
+/**
+ * Singleton to keep BoxStore reference and provide current list of Notes Objects.
+ * Inserts demo data if no Objects are stored.
+ */
+object ObjectBox {
+
+//    确保所有设备/版本使用相同的objectbox-models/default.json
+//    避免直接修改自动生成的MyObjectBox类
+//    跨版本升级时使用boxStore.runInTx执行数据迁移
+
+
+    private const val TAG = "ObjectBox"
+
+    lateinit var boxStore: BoxStore
+        private set
+
+    /**
+     * If building the [boxStore] failed, contains the thrown error message.
+     */
+    var dbExceptionMessage: String? = null
+        private set
+
+    fun init(context: Context) {
+        // 优化：调大事务回收超时时间
+        System.setProperty("objectbox.finalizerTimeout", "30000");
+        // On Android make sure to pass a Context when building the Store.
+        boxStore = try {
+            MyObjectBox.builder()
+                    .androidContext(context.applicationContext)
+                    .build()
+        } catch (e: DbException) {
+            if (e.javaClass == DbException::class.java || e is FileCorruptException) {
+                // Failed to build BoxStore due to database file issue, store message;
+                // checked in NoteListActivity to notify user.
+                dbExceptionMessage = e.toString()
+                return
+            } else {
+                // Failed to build BoxStore due to developer error.
+                throw e
+            }
+        }
+
+        if (com.sw.inbound.BuildConfig.DEBUG) {
+            var syncAvailable = if (Sync.isAvailable()) "available" else "unavailable"
+            Log.d(TAG,"Using ObjectBox ${BoxStore.getVersion()} (${BoxStore.getVersionNative()}, sync $syncAvailable)")
+            // Enable ObjectBox Admin on debug builds.
+            // https://docs.objectbox.io/data-browser
+            io.objectbox.android.Admin(boxStore).start(context.applicationContext)
+        }
+    }
+
+
+    /**
+     * If the database file is not in use, compresses (GZIP) and copies it to the given [target].
+     */
+    fun copyAndGzipDatabaseFileTo(target: File, context: Context): Boolean {
+        if (BoxStore.isDatabaseOpen(context, null)) {
+            // Do not copy if database file is still in use.
+            // If it would be open, the copy will likely get corrupted
+            // as BoxStore may currently write data to the file.
+            Log.e(TAG, "Database file is still in use, can not copy.")
+            return false
+        }
+
+        // If a name was given when building BoxStore use that instead of the default below.
+        val dbName = BoxStoreBuilder.DEFAULT_NAME
+        File(context.filesDir, "objectbox/$dbName/data.mdb").inputStream().use { input ->
+            target.parentFile?.mkdirs()
+            GZIPOutputStream(target.outputStream()).use { output ->
+                input.copyTo(output, DEFAULT_BUFFER_SIZE)
+            }
+        }
+        return true
+    }
+
+}