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refactor: Move the CRDT extract utility to a dedicated file

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This commit is contained in:
Marcelo Soares 2026-01-24 20:22:35 -03:00
commit df0f798166
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3 changed files with 50 additions and 46 deletions
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1
lib/drift_offline_first.dart
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@ -4,6 +4,7 @@
library;
export 'src/crdt.dart';
export 'src/crdt/extensions/extract.dart';
export 'src/crdt_base.dart';
export 'src/database.dart';
export 'src/hlc/converter.dart';

49
lib/src/crdt/extensions/extract.dart Normal file
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@ -0,0 +1,49 @@
import 'package:drift/drift.dart';
import '../../database.dart';
/// Extensions for [CrdtDatabase] to extract data from the CRDT data table.
extension CrdtDatabaseExtractExtensions on CrdtDatabase {
/// Gets a single data entry from the CRDT data table.
Future<T?> getSingleFromCrdtData<T extends Insertable>({
required String tableName,
required String rowId,
}) async {
final data = await getFromCrdtData<T>(tableName: tableName, rowIds: [rowId]);
return data.firstOrNull;
}
/// Gets a list of data entries from the CRDT data table.
Future<List<T>> getFromCrdtData<T extends Insertable>({
required String tableName,
required Iterable<String> rowIds,
}) async {
final tableInfo = synchronizedTables.firstWhere(
(t) => t.actualTableName == tableName,
orElse: () => throw ArgumentError(
'Table $tableName not found in synchronized tables.',
),
);
final crdtDataEntries = await managers.crdtDataTable
.filter((o) => o.tblName.equals(tableName) & o.rowId.isIn(rowIds))
.get();
return crdtDataEntries.convert<T>(tableInfo);
}
}
extension on List<CrdtDataEntry> {
Future<List<T>> convert<T extends Insertable>(TableInfo tableInfo) async {
final foundRowIds = map((e) => e.rowId).toSet();
return [
for (final rowId in foundRowIds)
await tableInfo.map({
for (final c in tableInfo.$columns)
c.$name: firstWhere((e) => e.rowId == rowId && e.columnName == c.$name)
.rawValue
?.rawSqlValue,
}) as T,
];
}
}

46
lib/src/database.dart
View file

@ -32,49 +32,3 @@ class CrdtDatabase extends _$CrdtDatabase {
@override
int schemaVersion = 1;
}
/// Extensions for [CrdtDatabase] to extract data from the CRDT data table.
extension CrdtDatabaseDataEntryExtensions on CrdtDatabase {
/// Gets a single data entry from the CRDT data table.
Future<T?> getSingleFromCrdtData<T extends DataClass>({
required String tableName,
required String rowId,
}) async {
final data = await getFromCrdtData<T>(tableName: tableName, rowIds: [rowId]);
return data.firstOrNull;
}
/// Gets a list of data entries from the CRDT data table.
Future<List<T>> getFromCrdtData<T extends DataClass>({
required String tableName,
required List<String> rowIds,
}) async {
final tableInfo = synchronizedTables.firstWhere(
(t) => t.actualTableName == tableName,
orElse: () => throw ArgumentError(
'Table $tableName not found in synchronized tables.',
),
);
final crdtDataEntries = await managers.crdtDataTable
.filter((o) => o.tblName.equals(tableName) & o.rowId.isIn(rowIds))
.get();
return crdtDataEntries.convert<T>(tableInfo);
}
}
extension on List<CrdtDataEntry> {
Future<List<T>> convert<T extends DataClass>(TableInfo tableInfo) async {
final foundRowIds = map((e) => e.rowId).toSet();
return [
for (final rowId in foundRowIds)
await tableInfo.map({
for (final c in tableInfo.$columns)
c.$name: firstWhere((e) => e.rowId == rowId && e.columnName == c.$name)
.rawValue
?.rawSqlValue,
}) as T,
];
}
}