Classe MetadataConditionExpression

Article
12/01/2014

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

Contains a condition expression used to filter the results of the metadata query.

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

Syntaxe

'Déclaration
<KnownTypeAttribute("GetKnownConditionValueTypes")> _
<DataContractAttribute(Name:="MetadataConditionExpression", Namespace:="https://schemas.microsoft.com/xrm/2011/Metadata/Query")> _
Public NotInheritable Class MetadataConditionExpression
    Implements IExtensibleDataObject

[KnownTypeAttribute("GetKnownConditionValueTypes")] 
[DataContractAttribute(Name="MetadataConditionExpression", Namespace="https://schemas.microsoft.com/xrm/2011/Metadata/Query")] 
public sealed class MetadataConditionExpression : IExtensibleDataObject

Remarques

The following code snippet from Sample: Query Metadata and Detect Changes shows the use of MetadataConditionExpression to set conditions for Entities and Attributes to return.


     // An array SchemaName values for non-intersect, user-owned entities that should not be returned.
     String[] excludedEntities = {
"WorkflowLog",
"Template",
"CustomerOpportunityRole",
"Import",
"UserQueryVisualization",
"UserEntityInstanceData",
"ImportLog",
"RecurrenceRule",
"QuoteClose",
"UserForm",
"SharePointDocumentLocation",
"Queue",
"DuplicateRule",
"OpportunityClose",
"Workflow",
"RecurringAppointmentMaster",
"CustomerRelationship",
"Annotation",
"SharePointSite",
"ImportData",
"ImportFile",
"OrderClose",
"Contract",
"BulkOperation",
"CampaignResponse",
"Connection",
"Report",
"CampaignActivity",
"UserEntityUISettings",
"IncidentResolution",
"GoalRollupQuery",
"MailMergeTemplate",
"Campaign",
"PostFollow",
"ImportMap",
"Goal",
"AsyncOperation",
"ProcessSession",
"UserQuery",
"ActivityPointer",
"List",
"ServiceAppointment"};

     //A filter expression to limit entities returned to non-intersect, user-owned entities not found in the list of excluded entities.
     MetadataFilterExpression EntityFilter = new MetadataFilterExpression(LogicalOperator.And);
     EntityFilter.Conditions.Add(new MetadataConditionExpression("IsIntersect", MetadataConditionOperator.Equals, false));
     EntityFilter.Conditions.Add(new MetadataConditionExpression("OwnershipType", MetadataConditionOperator.Equals, OwnershipTypes.UserOwned));
     EntityFilter.Conditions.Add(new MetadataConditionExpression("SchemaName", MetadataConditionOperator.NotIn, excludedEntities));
     MetadataConditionExpression isVisibileInMobileTrue = new MetadataConditionExpression("IsVisibleInMobile", MetadataConditionOperator.Equals, true);
     EntityFilter.Conditions.Add(isVisibileInMobileTrue);
    

    ...
    

    
 //A condition expresson to return optionset attributes
 MetadataConditionExpression[] optionsetAttributeTypes = new MetadataConditionExpression[] { 
 new MetadataConditionExpression("AttributeType", MetadataConditionOperator.Equals, AttributeTypeCode.Picklist),
 new MetadataConditionExpression("AttributeType", MetadataConditionOperator.Equals, AttributeTypeCode.State),
 new MetadataConditionExpression("AttributeType", MetadataConditionOperator.Equals, AttributeTypeCode.Status),
 new MetadataConditionExpression("AttributeType", MetadataConditionOperator.Equals, AttributeTypeCode.Boolean)
 };

 //A filter expression to apply the optionsetAttributeTypes condition expression
 MetadataFilterExpression AttributeFilter = new MetadataFilterExpression(LogicalOperator.Or);
 AttributeFilter.Conditions.AddRange(optionsetAttributeTypes);

 //A Properties expression to limit the properties to be included with attributes
 MetadataPropertiesExpression AttributeProperties = new MetadataPropertiesExpression() { AllProperties = false };
 AttributeProperties.PropertyNames.Add("OptionSet");
 AttributeProperties.PropertyNames.Add("AttributeType");
    

    ...
    

    
 //An entity query expression to combine the filter expressions and property expressions for the query.
 EntityQueryExpression entityQueryExpression = new EntityQueryExpression()
 {

  Criteria = EntityFilter,
  Properties = EntityProperties,
  AttributeQuery = new AttributeQueryExpression()
  {
   Criteria = AttributeFilter,
   Properties = AttributeProperties
  },
  LabelQuery = labelQuery

 };
 
 //Retrieve the metadata for the query without a ClientVersionStamp
 RetrieveMetadataChangesResponse initialRequest = getMetadataChanges(entityQueryExpression, null, DeletedMetadataFilters.OptionSet);

Hiérarchie d'héritage

System.Object
Microsoft.Xrm.Sdk.Metadata.Query.MetadataConditionExpression

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 98,Windows 2000,Windows 2000 Server,Windows CE,Windows Server 2008,Windows 98 Deuxième Édition,Pocket PC,Smart Phone,Windows Server 2003,Windows XP Professionnel,Windows Vista,Windows XP

Change History

Voir aussi

Référence

Membres MetadataConditionExpression
Espace de noms Microsoft.Xrm.Sdk.Metadata.Query

Autres ressources

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

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