Classe RetrieveMetadataChangesResponse

Article
12/01/2014

S'applique à: CRM 2015 on-prem, CRM Online

Contains the response from the RetrieveMetadataChangesRequest message.

Espace de noms: Microsoft.Xrm.Sdk.Messages
Assembly: Microsoft.Xrm.Sdk (dans Microsoft.Xrm.Sdk.dll)

Syntaxe

'Déclaration
<DataContractAttribute(Namespace:="https://schemas.microsoft.com/xrm/2011/Contracts")> _
Public NotInheritable Class RetrieveMetadataChangesResponse
    Inherits OrganizationResponse

[DataContractAttribute(Namespace="https://schemas.microsoft.com/xrm/2011/Contracts")] 
public sealed class RetrieveMetadataChangesResponse : OrganizationResponse

Exemple

The following code snippets from Sample: Query Metadata and Detect Changes show the use of RetrieveMetadataChangesResponseDeletedMetadata and EntityMetadata properties.

protected String updateOptionLabelList(EntityQueryExpression entityQueryExpression, String clientVersionStamp)
{
 //Retrieve metadata changes and add them to the cache
 RetrieveMetadataChangesResponse updateResponse;
 try
 {
  updateResponse = getMetadataChanges(entityQueryExpression, clientVersionStamp, DeletedMetadataFilters.OptionSet);
  addOptionLabelsToCache(updateResponse.EntityMetadata, true);
  removeOptionLabelsFromCache(updateResponse.DeletedMetadata, true);

 }
 catch (FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> ex)
 {
  // Check for ErrorCodes.ExpiredVersionStamp (0x80044352)
  // Will occur when the timestamp exceeds the Organization.ExpireSubscriptionsInDays value, which is 90 by default.
  if (ex.Detail.ErrorCode == unchecked((int)0x80044352))
  {
   //reinitialize cache
   _optionLabelList.Clear();

   updateResponse = getMetadataChanges(entityQueryExpression, null, DeletedMetadataFilters.OptionSet);
   //Add them to the cache and display the changes
   addOptionLabelsToCache(updateResponse.EntityMetadata, true);

  }
  else
  {
   throw ex;
  }

 }
 return updateResponse.ServerVersionStamp;
}
   
   
   ...
   
   
   
protected void addOptionLabelsToCache(EntityMetadataCollection entityMetadataCollection, Boolean showChanges)
{

 List<OptionSetOption> changes = new List<OptionSetOption>();

 foreach (EntityMetadata em in entityMetadataCollection)
 {
  foreach (AttributeMetadata am in em.Attributes)
  {
   switch (am.AttributeType)
   {
    case AttributeTypeCode.Boolean:
     BooleanAttributeMetadata booleanAttribute = (BooleanAttributeMetadata)am;
     //Labels will not be included if they aren't new
     if (booleanAttribute.OptionSet.FalseOption.Label.UserLocalizedLabel != null)
     {
      changes.Add(new OptionSetOption(
      (Guid)booleanAttribute.OptionSet.MetadataId,
      0, 
      booleanAttribute.OptionSet.FalseOption.Label.UserLocalizedLabel.Label)
      );
     }
     //Labels will not be included if they aren't new
     if (booleanAttribute.OptionSet.TrueOption.Label.UserLocalizedLabel != null)
     {
      changes.Add(new OptionSetOption(
      (Guid)booleanAttribute.OptionSet.MetadataId,
      1, 
      booleanAttribute.OptionSet.TrueOption.Label.UserLocalizedLabel.Label));
     }
     break;
    default:
     EnumAttributeMetadata optionsetAttribute = (EnumAttributeMetadata)am;
     foreach (OptionMetadata option in optionsetAttribute.OptionSet.Options)
     {
      //Labels will not be included if they aren't new
      if (option.Label.UserLocalizedLabel != null)
      {
       changes.Add(new OptionSetOption(
        (Guid)optionsetAttribute.OptionSet.MetadataId,
       (int)option.Value, 
       option.Label.UserLocalizedLabel.Label));
      }        
     }
     break;
   }
  }
 }

 _optionLabelList.AddRange(changes);

 if (showChanges)
 {

  if (changes.Count > 0)
  {
   Console.WriteLine("{0} option labels for {1} entities were added to the cache.", changes.Count, entityMetadataCollection.Count);
   Console.WriteLine("{0} Option Labels cached", _optionLabelList.Count);
  }
  else
  { Console.WriteLine("No option labels were added to the cache."); }

 }
}
   
   
   ...
   
   
   
protected void removeOptionLabelsFromCache(DeletedMetadataCollection DeletedMetadata, Boolean showChanges)
{
 List<OptionSetOption> optionSetOptionsToRemove = new List<OptionSetOption>();

 if (DeletedMetadata.Keys.Contains(DeletedMetadataFilters.OptionSet))
 {
  DataCollection<Guid> optionsetmetadataids = (DataCollection<Guid>)DeletedMetadata[DeletedMetadataFilters.OptionSet];
  foreach (Guid metadataid in optionsetmetadataids)
  {
   foreach (OptionSetOption oso in _optionLabelList)
   {
    if (metadataid == oso.optionsetId)
    {
     optionSetOptionsToRemove.Add(oso);
    }
   }
  }
 }
 foreach (OptionSetOption option in optionSetOptionsToRemove)
 {
  _optionLabelList.Remove(option);
 }
 if (showChanges)
 {
  if (optionSetOptionsToRemove.Count > 0)
  {
   Console.WriteLine("{0} Option Labels removed", optionSetOptionsToRemove.Count);
   Console.WriteLine("{0} Total Option Labels currently cached", _optionLabelList.Count);
   Console.WriteLine("");
  }
  else
  {
   Console.WriteLine("No Option Labels removed.");
   Console.WriteLine("");
  }

 }
}

Hiérarchie d'héritage

System.Object
Microsoft.Xrm.Sdk.OrganizationResponse
Microsoft.Xrm.Sdk.Messages.RetrieveMetadataChangesResponse

Cohérence de thread

Tous les membres statiques publics (Shared dans Visual Basic) de ce type sont thread-safe. Tous les membres d'instance ne sont pas garantis thread-safe.

Plateformes

Plateformes de développement

Windows Vista, Windows Server 2003 et

Plateformes cibles

Windows Vista,Windows XP

Change History

Voir aussi

Référence

Membres RetrieveMetadataChangesResponse
Espace de noms Microsoft.Xrm.Sdk.Messages
Classe RetrieveMetadataChangesRequest

Autres ressources

Query and Capture Changes to Metadata
Sample: Query Metadata and Detect Changes

Partager via