Question

我已经实现了一个似乎没有处理冲突的FullEnumerationSimpleSyncProvider。

在构造函数中，我设置了以下属性：

this.Configuration.CollisionConflictResolutionPolicy = CollisionConflictResolutionPolicy.ApplicationDefined;
this.Configuration.ConflictResolutionPolicy = ConflictResolutionPolicy.ApplicationDefined;

this.ItemConstraint += new EventHandler<SimpleSyncItemConstraintEventArgs>(OnItemConstraint);
this.ItemConflicting += new EventHandler<SimpleSyncItemConflictingEventArgs>(OnItemConflicting);

我的约束和冲突的事件处理程序：

void OnItemConstraint(object sender, SimpleSyncItemConstraintEventArgs e)
{
    e.SetResolutionAction(ConstraintConflictResolutionAction.Merge);
}

void OnItemConflicting(object sender, SimpleSyncItemConflictingEventArgs e)
{
    e.SetResolutionAction(ConflictResolutionAction.Merge);
}

但是，当我在InsertItem（）中报告冲突时，永远不会调用约束/冲突事件处理程序。

public override void InsertItem(
        object itemData, 
        IEnumerable<SyncId> changeUnitsToCreate, 
        RecoverableErrorReportingContext recoverableErrorReportingContext, 
        out ItemFieldDictionary keyAndUpdatedVersion, 
        out bool commitKnowledgeAfterThisItem) {

            // ...snip...

            // Check if it is already there --- name collision
            if (itemAlreadyExists)
            {
                recoverableErrorReportingContext.RecordConstraintError(ConstructDictionary(item.ID));
                keyAndUpdatedVersion = null;
                commitKnowledgeAfterThisItem = false;

                return;
            }

            // ...snip...
}

我想在调用RecordConstraintError时，同步框架会在InsertItem退出后调用相应的事件处理程序。

非常感谢任何见解！

Answer 1

如果您正在处理并发冲突并将SetResolutionAction设置为ConflictResolutionAction.Merge，则您的提供程序需要实现ISimpleSyncProviderConcurrencyConflictResolver接口（ResolveUpdateUpdateConflict，ResolveLocalDeleteRemoteUpdateConflict和ResolveLocalUpdateRemoteDeleteConflict。）

如果处理约束冲突并将ConstraintConflictResolutionAction设置为Merge，RenameDestination或RenameSource，则提供者需要实现ISimpleSyncProviderConstraintConflictResolver接口。

Microsoft Sync Framework Simple Provider – Concurrency Conflict Handling

Sync Framework：SimpleSyncProvider中未处理冲突

1 个答案: