getAllMetadata method
读取所有缓存条目元数据
Implementation
Future<List<MapEntry<String, Map<String, dynamic>>>> getAllMetadata() async {
final db = await _resolveDatabase();
if (db == null) return [];
try {
final records = await _metadataStore.find(db);
return records
.map((r) => MapEntry(r.key, r.value as Map<String, dynamic>))
.toList();
} catch (e, st) {
LogUtil.v('RxNetDataBase: getAllMetadata error: $e\n$st');
return [];
}
}