From f4d926c1eb91749a4b0f89c7a35538821ff7e21b Mon Sep 17 00:00:00 2001 From: Keuin Date: Tue, 12 Jan 2021 16:54:03 +0800 Subject: Add serialization and deserialization for ObjectCollection --- .../incremental/ObjectCollectionSerializer.java | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 src/main/java/com/keuin/kbackupfabric/util/backup/incremental/ObjectCollectionSerializer.java (limited to 'src/main/java/com/keuin/kbackupfabric/util/backup/incremental/ObjectCollectionSerializer.java') diff --git a/src/main/java/com/keuin/kbackupfabric/util/backup/incremental/ObjectCollectionSerializer.java b/src/main/java/com/keuin/kbackupfabric/util/backup/incremental/ObjectCollectionSerializer.java new file mode 100644 index 0000000..cc77837 --- /dev/null +++ b/src/main/java/com/keuin/kbackupfabric/util/backup/incremental/ObjectCollectionSerializer.java @@ -0,0 +1,30 @@ +package com.keuin.kbackupfabric.util.backup.incremental; + +import java.io.*; +import java.util.Objects; + +public class ObjectCollectionSerializer { + public static ObjectCollection fromFile(File file) throws IOException { + Objects.requireNonNull(file); + ObjectCollection collection; + try (FileInputStream fileInputStream = new FileInputStream(file)) { + try (ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream)) { + collection = (ObjectCollection) objectInputStream.readObject(); + } catch (ClassNotFoundException ignored) { + // this should not happen + return null; + } + } + return collection; + } + + public static void toFile(ObjectCollection collection, File file) throws IOException { + Objects.requireNonNull(collection); + Objects.requireNonNull(file); + try (FileOutputStream fileOutputStream = new FileOutputStream(file)) { + try (ObjectOutputStream objectOutputStream = new ObjectOutputStream(fileOutputStream)) { + objectOutputStream.writeObject(collection); + } + } + } +} -- cgit v1.2.3