J'utilise SQLite as a database et je le tableau suivant, qui fonctionne, quand je le crée:Comment travailler avec des classes et des listes imbriquées dans ma table?
public class TodoItem
{
[PrimaryKey, AutoIncrement]
public int ID { get; set; }
public string Name { get; set; }
public string Notes { get; set; }
public bool Done { get; set; }
public Gender Gender { get; set; }
public DateTime? DateOfBirth { get; set; }
}
Lors de la création de la table
database.CreateTableAsync<TodoItem>().Wait();
maintenant je reçois des erreurs, si je veux d'inclure un objet imbriqué:
public class Test
{
[PrimaryKey, AutoIncrement]
public int AnotherID { get; set; }
public string Name { get; set; }
}
public class TodoItem
{
[PrimaryKey, AutoIncrement]
public int ID { get; set; }
public string Name { get; set; }
public string Notes { get; set; }
public bool Done { get; set; }
public Gender Gender { get; set; }
public DateTime? DateOfBirth { get; set; }
public Test Test { get; set; }
}
Je reçois l'erreur suivante
UNHANDLED EXCEPTION:
System.AggregateException: One or more errors occurred. ---> System.NotSupportedException: Don't know about Todo.Test
at SQLite.Orm.SqlType (SQLite.TableMapping+Column p, System.Boolean storeDateTimeAsTicks) [0x001ad] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:2080
at SQLite.Orm.SqlDecl (SQLite.TableMapping+Column p, System.Boolean storeDateTimeAsTicks) [0x00000] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:2027
at SQLite.SQLiteConnection.<CreateTable>m__0 (SQLite.TableMapping+Column p) [0x00000] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:417
at System.Linq.Enumerable+SelectArrayIterator`2[TSource,TResult].ToArray() [0x00012] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/external/corefx/src/System.Linq/src/System/Linq/Select.cs:251
at System.Linq.Enumerable.ToArray[TSource] (System.Collections.Generic.IEnumerable`1[T] source) [0x00015] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/external/corefx/src/System.Linq/src/System/Linq/ToCollection.cs:19
at SQLite.SQLiteConnection.CreateTable (System.Type ty, SQLite.CreateFlags createFlags) [0x00133] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:418
at SQLite.SQLiteAsyncConnection+<CreateTablesAsync>c__AnonStorey0.<>m__0() [0x0002f] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLiteAsync.cs:108
at System.Threading.Tasks.Task`1[TResult].InnerInvoke() [0x0000f] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Future.cs:680
at System.Threading.Tasks.Task.Execute() [0x00010] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:2502
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task.ThrowIfExceptional (System.Boolean includeTaskCanceledExceptions) [0x00011] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:2157
at System.Threading.Tasks.Task.Wait (System.Int32 millisecondsTimeout, System.Threading.CancellationToken cancellationToken) [0x00043] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:3189
at System.Threading.Tasks.Task.Wait() [0x00000] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:3054
at Todo.TodoItemDatabase..ctor (System.String dbPath) [0x00015] in C:\Users\some-user\Documents\Visual Studio 2015\Projects\Todo\Todo\Data\TodoItemDatabase.cs:14
at Todo.App.get_Database() [0x0000e] in C:\Users\some-user\Documents\Visual Studio 2015\Projects\Todo\Todo\App.cs:32
at Todo.TodoListPage+<OnAppearing>d__1.MoveNext() [0x0002c] in C:\Users\some-user\Documents\Visual Studio 2015\Projects\Todo\Todo\Views\TodoListPage.xaml.cs:20
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() [0x0000c] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:151
at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__6_0 (System.Object state) [0x00000] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1018
at Android.App.SyncContext+<>c__DisplayClass2_0.<Post>b__0() [0x00000] in /Users/builder/data/lanes/4695/448f54fd/source/xamarin-android/src/Mono.Android/Android.App/SyncContext.cs:35
at Java.Lang.Thread+RunnableImplementor.Run() [0x00008] in /Users/builder/data/lanes/4695/448f54fd/source/xamarin-android/src/Mono.Android/Java.Lang/Thread.cs:36
at Java.Lang.IRunnableInvoker.n_Run (System.IntPtr jnienv, System.IntPtr native__this) [0x00008] in /Users/builder/data/lanes/4695/448f54fd/source/xamarin-android/src/Mono.Android/obj/Release/android-23/mcw/Java.Lang.IRunnable.cs:81
at (wrapper dynamic-method) System.Object:4ad81135-c1dd-4bba-bca3-4e991f58da69 (intptr,intptr)
---> (Inner Exception #0) System.NotSupportedException: Don't know about Todo.Test
at SQLite.Orm.SqlType (SQLite.TableMapping+Column p, System.Boolean storeDateTimeAsTicks) [0x001ad] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:2080
at SQLite.Orm.SqlDecl (SQLite.TableMapping+Column p, System.Boolean storeDateTimeAsTicks) [0x00000] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:2027
at SQLite.SQLiteConnection.<CreateTable>m__0 (SQLite.TableMapping+Column p) [0x00000] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:417
at System.Linq.Enumerable+SelectArrayIterator`2[TSource,TResult].ToArray() [0x00012] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/external/corefx/src/System.Linq/src/System/Linq/Select.cs:251
at System.Linq.Enumerable.ToArray[TSource] (System.Collections.Generic.IEnumerable`1[T] source) [0x00015] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/external/corefx/src/System.Linq/src/System/Linq/ToCollection.cs:19
at SQLite.SQLiteConnection.CreateTable (System.Type ty, SQLite.CreateFlags createFlags) [0x00133] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:418
at SQLite.SQLiteAsyncConnection+<CreateTablesAsync>c__AnonStorey0.<>m__0() [0x0002f] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLiteAsync.cs:108
at System.Threading.Tasks.Task`1[TResult].InnerInvoke() [0x0000f] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Future.cs:680
at System.Threading.Tasks.Task.Execute() [0x00010] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:2502 <---
Si j'utilise un List
public class TodoItem
{
[PrimaryKey, AutoIncrement]
public int ID { get; set; }
public string Name { get; set; }
public string Notes { get; set; }
public bool Done { get; set; }
public Gender Gender { get; set; }
public DateTime? DateOfBirth { get; set; }
public List<string> Strings { get; set; }
}
Je reçois
UNHANDLED EXCEPTION:
System.AggregateException: One or more errors occurred. ---> System.NotSupportedException: Don't know about System.Collections.Generic.List`1[System.String]
at SQLite.Orm.SqlType (SQLite.TableMapping+Column p, System.Boolean storeDateTimeAsTicks) [0x001ad] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:2080
at SQLite.Orm.SqlDecl (SQLite.TableMapping+Column p, System.Boolean storeDateTimeAsTicks) [0x00000] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:2027
at SQLite.SQLiteConnection.<CreateTable>m__0 (SQLite.TableMapping+Column p) [0x00000] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:417
at System.Linq.Enumerable+SelectArrayIterator`2[TSource,TResult].ToArray() [0x00012] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/external/corefx/src/System.Linq/src/System/Linq/Select.cs:251
at System.Linq.Enumerable.ToArray[TSource] (System.Collections.Generic.IEnumerable`1[T] source) [0x00015] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/external/corefx/src/System.Linq/src/System/Linq/ToCollection.cs:19
at SQLite.SQLiteConnection.CreateTable (System.Type ty, SQLite.CreateFlags createFlags) [0x00133] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:418
at SQLite.SQLiteAsyncConnection+<CreateTablesAsync>c__AnonStorey0.<>m__0() [0x0002f] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLiteAsync.cs:108
at System.Threading.Tasks.Task`1[TResult].InnerInvoke() [0x0000f] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Future.cs:680
at System.Threading.Tasks.Task.Execute() [0x00010] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:2502
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task.ThrowIfExceptional (System.Boolean includeTaskCanceledExceptions) [0x00011] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:2157
at System.Threading.Tasks.Task.Wait (System.Int32 millisecondsTimeout, System.Threading.CancellationToken cancellationToken) [0x00043] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:3189
at System.Threading.Tasks.Task.Wait() [0x00000] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:3054
at Todo.TodoItemDatabase..ctor (System.String dbPath) [0x00015] in C:\Users\some-user\Documents\Visual Studio 2015\Projects\Todo\Todo\Data\TodoItemDatabase.cs:14
at Todo.App.get_Database() [0x0000e] in C:\Users\some-user\Documents\Visual Studio 2015\Projects\Todo\Todo\App.cs:32
at Todo.TodoListPage+<OnAppearing>d__1.MoveNext() [0x0002c] in C:\Users\some-user\Documents\Visual Studio 2015\Projects\Todo\Todo\Views\TodoListPage.xaml.cs:20
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() [0x0000c] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:151
at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__6_0 (System.Object state) [0x00000] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1018
at Android.App.SyncContext+<>c__DisplayClass2_0.<Post>b__0() [0x00000] in /Users/builder/data/lanes/4695/448f54fd/source/xamarin-android/src/Mono.Android/Android.App/SyncContext.cs:35
at Java.Lang.Thread+RunnableImplementor.Run() [0x00008] in /Users/builder/data/lanes/4695/448f54fd/source/xamarin-android/src/Mono.Android/Java.Lang/Thread.cs:36
at Java.Lang.IRunnableInvoker.n_Run (System.IntPtr jnienv, System.IntPtr native__this) [0x00008] in /Users/builder/data/lanes/4695/448f54fd/source/xamarin-android/src/Mono.Android/obj/Release/android-23/mcw/Java.Lang.IRunnable.cs:81
at (wrapper dynamic-method) System.Object:3ff99a1f-7842-4c41-b229-386570e8d19f (intptr,intptr)
---> (Inner Exception #0) System.NotSupportedException: Don't know about System.Collections.Generic.List`1[System.String]
at SQLite.Orm.SqlType (SQLite.TableMapping+Column p, System.Boolean storeDateTimeAsTicks) [0x001ad] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:2080
at SQLite.Orm.SqlDecl (SQLite.TableMapping+Column p, System.Boolean storeDateTimeAsTicks) [0x00000] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:2027
at SQLite.SQLiteConnection.<CreateTable>m__0 (SQLite.TableMapping+Column p) [0x00000] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:417
at System.Linq.Enumerable+SelectArrayIterator`2[TSource,TResult].ToArray() [0x00012] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/external/corefx/src/System.Linq/src/System/Linq/Select.cs:251
at System.Linq.Enumerable.ToArray[TSource] (System.Collections.Generic.IEnumerable`1[T] source) [0x00015] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/external/corefx/src/System.Linq/src/System/Linq/ToCollection.cs:19
at SQLite.SQLiteConnection.CreateTable (System.Type ty, SQLite.CreateFlags createFlags) [0x00133] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLite.cs:418
at SQLite.SQLiteAsyncConnection+<CreateTablesAsync>c__AnonStorey0.<>m__0() [0x0002f] in /Users/fak/Dropbox/Projects/sqlite-net/src/SQLiteAsync.cs:108
at System.Threading.Tasks.Task`1[TResult].InnerInvoke() [0x0000f] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Future.cs:680
at System.Threading.Tasks.Task.Execute() [0x00010] in /Users/builder/jenkins/workspace/xamarin-android/xamarin-android/external/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:2502 <---
J'utilise SQLite-net Official Portable Library 1.3.3. Dois-je utiliser des attributs comme PrimaryKey
, ForeignKey
et ainsi de suite? Comment? Ou la bibliothèque est-elle seulement capable de gérer les types de données primitifs?
L'échantillon peut être téléchargé à partir de here.
This issue indique qu'il devrait être possible de travailler avec List
, mais pas dans la dernière version. J'ai essayé de rétrograder à 1.2.0 et 1.3.1 sans succès.
Modifier
J'ai installé SQLiteNetExtensions et changé l'exemple de code à
using SQLite;
using SQLiteNetExtensions.Attributes;
using System.Collections.Generic;
namespace Todo
{
public class Test
{
[PrimaryKey, AutoIncrement]
public int AnotherID { get; set; }
public string Name { get; set; }
}
public class TodoItem
{
[PrimaryKey, AutoIncrement]
public int ID { get; set; }
public string Name { get; set; }
public string Notes { get; set; }
public bool Done { get; set; }
[TextBlob("StringsBlobbed")]
public List<string> Strings { get; set; }
public string StringsBlobbed { get; set; }
}
}
et je reçois toujours la même erreur.
Edit 2
Je pense qu'il ya une confusion entre bibliothèques. SQLite-Net Extensions
dépend de SQLite.Net-PCL v. 3.1.1 (Nuget). Mais Xamarin lié à la bibliothèque sqlite-net-pcl v. 1.3.3 (Nuget).
SQLite.Net-PCL
(oysteinkrog) est une fourche de sqlite-net-pcl
(praeclarum). Il semble que ce dernier n'est pas compatible avec SQLite-Net Extensions
, ce dont j'ai besoin ici. Mais est-ce que SQLite.Net-PCL
prend en charge UWP? Il n'a pas été mis à jour depuis le 4 juin 2016. Et la chose la plus drôle est que SQLite-Net Extensions
liens à praeclarum, ce qui est faux. J'ai vérifié ceci en désinstallant tous les paquets de Nuget de SQL et en installant seulement SQLite-Net Extensions
, qui devrait déclencher les dépendances requises automatiquement. Que puis-je faire?
Ne discutez pas des votes dans votre question. Quoi qu'il en soit, je suppose que vous devriez lire [demander] et inclure l'erreur réelle. "Une ou plusieurs erreurs sont survenues" est une exception AggregateException, qui contient les exceptions réelles survenues dans sa propriété 'InnerExceptions'. Ces exceptions contiennent des messages que vous pouvez approfondir, et n'oubliez pas de montrer votre recherche dans votre question. – CodeCaster
Voir par exemple [Puis-je utiliser une liste de chaînes dans une classe destinée à SQLite?] (Https://stackoverflow.com/questions/14663984/can-i-use-a-list-of-string-in-a -class-destiné-à-sqlite). – CodeCaster
J'ai essayé d'utiliser 'SQLiteNetExtensions', mais j'ai la même erreur pour la liste (voir question éditée). Ne devrait-il pas être possible de travailler avec 'ForeignKey' pour imbriquer un objet dans un objet? – testing