forked from ankidroid/Anki-Android
-
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Convert Bundle to LargeObjectStorage
To stop TransactionTooLargeException
- Loading branch information
1 parent
07a0c30
commit dd8aafe
Showing
3 changed files
with
182 additions
and
5 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
158 changes: 158 additions & 0 deletions
158
AnkiDroid/src/main/java/com/ichi2/utils/LargeObjectStorage.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| /* | ||
| Copyright (c) 2020 David Allison <davidallisongithub@gmail.com> | ||
| This program is free software; you can redistribute it and/or modify it under | ||
| the terms of the GNU General Public License as published by the Free Software | ||
| Foundation; either version 3 of the License, or (at your option) any later | ||
| version. | ||
| This program is distributed in the hope that it will be useful, but WITHOUT ANY | ||
| WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A | ||
| PARTICULAR PURPOSE. See the GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License along with | ||
| this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| package com.ichi2.utils; | ||
|
|
||
| import android.content.Context; | ||
| import android.os.Bundle; | ||
|
|
||
| import com.ichi2.compat.CompatHelper; | ||
|
|
||
| import java.io.ByteArrayInputStream; | ||
| import java.io.ByteArrayOutputStream; | ||
| import java.io.File; | ||
| import java.io.FileInputStream; | ||
| import java.io.IOException; | ||
| import java.io.ObjectInputStream; | ||
| import java.io.ObjectOutputStream; | ||
| import java.io.Serializable; | ||
|
|
||
| import androidx.annotation.Nullable; | ||
| import timber.log.Timber; | ||
|
|
||
| /** | ||
| * Class to allow the transfer of large data between activities (currently) using a static cache file. | ||
| * | ||
| * This is due to the data limit on a Bundle (TransactionTooLargeException) after ~500KB+ of data. | ||
| * | ||
| * Using a single file pre data item means we will not excessively use cached data. | ||
| */ | ||
| public class LargeObjectStorage { | ||
| private final Context mContext; | ||
|
|
||
| public LargeObjectStorage(Context context) { | ||
| mContext = context; | ||
| } | ||
|
|
||
| public <T extends Serializable> void storeSingleInstance(StorageData<T> data, Bundle bundle) throws IOException { | ||
| Timber.i("Setting '%s'", data.getBundleKey()); | ||
| bundle.putString(data.getBundleKey(), "1"); | ||
| writeFile(data); | ||
| } | ||
|
|
||
| private <T extends Serializable> void writeFile(StorageData<T> data) throws IOException { | ||
| ByteArrayInputStream inputStream = null; | ||
| try (ByteArrayOutputStream source = new ByteArrayOutputStream(); | ||
| ObjectOutputStream objectOutputStream = new ObjectOutputStream(source)) { | ||
|
|
||
| objectOutputStream.writeObject(data.getData()); | ||
| objectOutputStream.flush(); | ||
| objectOutputStream.close(); | ||
|
|
||
| inputStream = new ByteArrayInputStream(source.toByteArray()); | ||
| File outputFile = new File(mContext.getCacheDir(), data.getFileName() + "." + data.getExtension()); | ||
| CompatHelper.getCompat().copyFile(inputStream, outputFile.getAbsolutePath()); | ||
| } finally { | ||
| if (inputStream != null) { | ||
| try { | ||
| inputStream.close(); | ||
| } catch (IOException e) { | ||
| //ignore | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
|
|
||
| @Nullable | ||
| public <T extends Serializable> T getSingleInstance(StorageKey<T> key, Bundle bundle) { | ||
| if (bundle.getString(key.getBundleKey(), null) == null) { | ||
| Timber.i("No data in bundle for key %s", key.getBundleKey()); | ||
| return null; | ||
| } | ||
|
|
||
| File outputFile = new File(mContext.getCacheDir(), key.getFileName() + "." + key.getExtension()); | ||
|
|
||
| try ( | ||
| FileInputStream fis = new FileInputStream(outputFile.getAbsolutePath()); | ||
| ObjectInputStream ois = new ObjectInputStream(fis)) { | ||
| //noinspection unchecked | ||
| return (T) ois.readObject(); | ||
| } catch (Exception e) { | ||
| Timber.e(e, "Error deserializing field"); | ||
| return null; | ||
| } | ||
| } | ||
|
|
||
|
|
||
| public static class StorageData<T extends Serializable> { | ||
| private final StorageKey<T> mKey; | ||
| private final T mData; | ||
|
|
||
| public StorageData(StorageKey<T> storageKey, T data) { | ||
| this.mKey = storageKey; | ||
| this.mData = data; | ||
| } | ||
|
|
||
| public String getBundleKey() { | ||
| return mKey.getBundleKey(); | ||
| } | ||
|
|
||
| public T getData() { | ||
| return mData; | ||
| } | ||
|
|
||
| public String getFileName() { | ||
| return mKey.mFileName; | ||
| } | ||
|
|
||
| public String getExtension() { | ||
| return mKey.mExtension; | ||
| } | ||
| } | ||
|
|
||
| public static class StorageKey<T extends Serializable> { | ||
| private final String mBundleKey; | ||
| private final String mFileName; | ||
| private final String mExtension; | ||
|
|
||
|
|
||
| public StorageKey(String mBundleKey, String mFileName, String mExtension) { | ||
| this.mBundleKey = mBundleKey; | ||
| this.mFileName = mFileName; | ||
| this.mExtension = mExtension; | ||
| } | ||
|
|
||
|
|
||
| public StorageData<T> asData(T data) { | ||
| return new StorageData<>(this, data); | ||
| } | ||
|
|
||
|
|
||
| public String getFileName() { | ||
| return mFileName; | ||
| } | ||
|
|
||
| public String getExtension() { | ||
| return mExtension; | ||
| } | ||
|
|
||
|
|
||
| public String getBundleKey() { | ||
| return mBundleKey; | ||
| } | ||
| } | ||
| } |