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Update cache_object_provider.dart #1

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64 changes: 38 additions & 26 deletions flutter_cache_manager/lib/src/storage/cache_object_provider.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -14,27 +14,28 @@ class CacheObjectProvider implements CacheInfoRepository {
Future open() async {
db = await openDatabase(path, version: 3,
onCreate: (Database db, int version) async {
await db.execute('''
create table $_tableCacheObject (
${CacheObject.columnId} integer primary key,
${CacheObject.columnUrl} text,
${CacheObject.columnKey} text,
${CacheObject.columnPath} text,
${CacheObject.columnETag} text,
${CacheObject.columnValidTill} integer,
${CacheObject.columnTouched} integer,
${CacheObject.columnLength} integer
);
create unique index $_tableCacheObject${CacheObject.columnKey}
ON $_tableCacheObject (${CacheObject.columnKey});
''');
db.transaction((txn) async {
return await txn.execute('''
create table $_tableCacheObject (
${CacheObject.columnId} integer primary key,
${CacheObject.columnUrl} text,
${CacheObject.columnKey} text,
${CacheObject.columnPath} text,
${CacheObject.columnETag} text,
${CacheObject.columnValidTill} integer,
${CacheObject.columnTouched} integer,
${CacheObject.columnLength} integer
);
create unique index $_tableCacheObject${CacheObject.columnKey}
ON $_tableCacheObject (${CacheObject.columnKey});
''');
});
}, onUpgrade: (Database db, int oldVersion, int newVersion) async {
// Migration for adding the optional key, does the following:
// Adds the new column
// Creates a unique index for the column
// Migrates over any existing URLs to keys
if (oldVersion <= 1) {

await db.transaction((txn) async {
await txn.execute('''
alter table $_tableCacheObject
Expand All @@ -52,10 +53,12 @@ class CacheObjectProvider implements CacheInfoRepository {
});
}
if (oldVersion <= 2) {
await db.execute('''
alter table $_tableCacheObject
add ${CacheObject.columnLength} integer;
''');
await db.transaction((txn) async {
return await txn.execute('''
alter table $_tableCacheObject
add ${CacheObject.columnLength} integer;
''');
});
}
});
}
Expand All @@ -71,7 +74,9 @@ class CacheObjectProvider implements CacheInfoRepository {

@override
Future<CacheObject> insert(CacheObject cacheObject) async {
var id = await db.insert(_tableCacheObject, cacheObject.toMap());
var id = await db.transaction((txn) async {
return await txn.insert(_tableCacheObject, cacheObject.toMap());
});
return cacheObject.copyWith(id: id);
}

Expand All @@ -87,20 +92,26 @@ class CacheObjectProvider implements CacheInfoRepository {

@override
Future<int> delete(int id) {
return db.delete(_tableCacheObject,
where: '${CacheObject.columnId} = ?', whereArgs: [id]);
return db.transaction((txn) async {
return txn.delete(_tableCacheObject,
where: '${CacheObject.columnId} = ?', whereArgs: [id]);
});
}

@override
Future deleteAll(Iterable<int> ids) {
return db.delete(_tableCacheObject,
where: '${CacheObject.columnId} IN (' + ids.join(',') + ')');
return db.transaction((txn) async {
return txn.delete(_tableCacheObject,
where: '${CacheObject.columnId} IN (' + ids.join(',') + ')');
});
}

@override
Future<int> update(CacheObject cacheObject) {
return db.update(_tableCacheObject, cacheObject.toMap(),
where: '${CacheObject.columnId} = ?', whereArgs: [cacheObject.id]);
return db.transaction((txn) async {
return txn.update(_tableCacheObject, cacheObject.toMap(),
where: '${CacheObject.columnId} = ?', whereArgs: [cacheObject.id]);
});
}

@override
Expand Down Expand Up @@ -139,3 +150,4 @@ class CacheObjectProvider implements CacheInfoRepository {
@override
Future close() => db.close();
}