Crear y recuperar relaciones de tabla
Este tema muestra cómo crear y recuperar relaciones de tabla.
Crear una relación de 1:N
El siguiente ejemplo de código usa el método ElegibleCreateOneToManyRelationship para verificar que las tablas Account y Campaign pueden participar en una relación 1:N y luego crea la relación utilizando CreateOneToManyRequest.
bool eligibleCreateOneToManyRelationship =
EligibleCreateOneToManyRelationship("account", "campaign");
if (eligibleCreateOneToManyRelationship)
{
CreateOneToManyRequest createOneToManyRelationshipRequest =
new CreateOneToManyRequest
{
OneToManyRelationship =
new OneToManyRelationshipMetadata
{
ReferencedEntity = "account",
ReferencingEntity = "campaign",
SchemaName = "new_account_campaign",
AssociatedMenuConfiguration = new AssociatedMenuConfiguration
{
Behavior = AssociatedMenuBehavior.UseLabel,
Group = AssociatedMenuGroup.Details,
Label = new Label("Account", 1033),
Order = 10000
},
CascadeConfiguration = new CascadeConfiguration
{
Assign = CascadeType.NoCascade,
Delete = CascadeType.RemoveLink,
Merge = CascadeType.NoCascade,
Reparent = CascadeType.NoCascade,
Share = CascadeType.NoCascade,
Unshare = CascadeType.NoCascade
}
},
Lookup = new LookupAttributeMetadata
{
SchemaName = "new_parent_accountid",
DisplayName = new Label("Account Lookup", 1033),
RequiredLevel = new AttributeRequiredLevelManagedProperty(AttributeRequiredLevel.None),
Description = new Label("Sample Lookup", 1033)
}
};
CreateOneToManyResponse createOneToManyRelationshipResponse =
(CreateOneToManyResponse)service.Execute(
createOneToManyRelationshipRequest);
_oneToManyRelationshipId =
createOneToManyRelationshipResponse.RelationshipId;
_oneToManyRelationshipName =
createOneToManyRelationshipRequest.OneToManyRelationship.SchemaName;
Console.WriteLine(
"The one-to-many relationship has been created between {0} and {1}.",
"account", "campaign");
}
EligibleCreateOneToManyRelationship
El siguiente ejemplo de código usa el método EligibleCreateOneToManyRelationship, que a su vez utiliza CanBeReferencedRequest y CanBeReferencingRequest para verificar si dos tablas pueden participar en una relación 1:N.
/// <summary>
/// Determines whether two entities are eligible to participate in a relationship
/// </summary>
/// <param name="referencedEntity">Primary Entity</param>
/// <param name="referencingEntity">Referencing Entity</param>
/// <returns></returns>
public bool EligibleCreateOneToManyRelationship(string referencedEntity,
string referencingEntity)
{
//Checks whether the specified entity can be the primary entity in one-to-many
//relationship.
CanBeReferencedRequest canBeReferencedRequest = new CanBeReferencedRequest
{
EntityName = referencedEntity
};
CanBeReferencedResponse canBeReferencedResponse =
(CanBeReferencedResponse)service.Execute(canBeReferencedRequest);
if (!canBeReferencedResponse.CanBeReferenced)
{
Console.WriteLine(
"Entity {0} can't be the primary entity in this one-to-many relationship",
referencedEntity);
}
//Checks whether the specified entity can be the referencing entity in one-to-many
//relationship.
CanBeReferencingRequest canBereferencingRequest = new CanBeReferencingRequest
{
EntityName = referencingEntity
};
CanBeReferencingResponse canBeReferencingResponse =
(CanBeReferencingResponse)service.Execute(canBereferencingRequest);
if (!canBeReferencingResponse.CanBeReferencing)
{
Console.WriteLine(
"Entity {0} can't be the referencing entity in this one-to-many relationship",
referencingEntity);
}
if (canBeReferencedResponse.CanBeReferenced == true
&& canBeReferencingResponse.CanBeReferencing == true)
{
return true;
}
else
{
return false;
}
}
Crear una relación de N:N
El siguiente ejemplo de código usa el método EligibleCreateManyToManyRelationship para verificar que las tablas Account y Campaign pueden participar en una relación de N:N y luego crea la relación utilizando CreateManyToManyRequest.
bool accountEligibleParticipate =
EligibleCreateManyToManyRelationship("account");
bool campaignEligibleParticipate =
EligibleCreateManyToManyRelationship("campaign");
if (accountEligibleParticipate && campaignEligibleParticipate)
{
CreateManyToManyRequest createManyToManyRelationshipRequest =
new CreateManyToManyRequest
{
IntersectEntitySchemaName = "new_accounts_campaigns",
ManyToManyRelationship = new ManyToManyRelationshipMetadata
{
SchemaName = "new_accounts_campaigns",
Entity1LogicalName = "account",
Entity1AssociatedMenuConfiguration =
new AssociatedMenuConfiguration
{
Behavior = AssociatedMenuBehavior.UseLabel,
Group = AssociatedMenuGroup.Details,
Label = new Label("Account", 1033),
Order = 10000
},
Entity2LogicalName = "campaign",
Entity2AssociatedMenuConfiguration =
new AssociatedMenuConfiguration
{
Behavior = AssociatedMenuBehavior.UseLabel,
Group = AssociatedMenuGroup.Details,
Label = new Label("Campaign", 1033),
Order = 10000
}
}
};
CreateManyToManyResponse createManytoManyRelationshipResponse =
(CreateManyToManyResponse)service.Execute(
createManyToManyRelationshipRequest);
_manyToManyRelationshipId =
createManytoManyRelationshipResponse.ManyToManyRelationshipId;
_manyToManyRelationshipName =
createManyToManyRelationshipRequest.ManyToManyRelationship.SchemaName;
Console.WriteLine(
"The many-to-many relationship has been created between {0} and {1}.",
"account", "campaign");
}
EligibleCreateManyToManyRelationship
El siguiente ejemplo de código crea un método EligibleCreateManyToManyRelationship que utiliza CanManyToManyRequest para verificar si una tabla puede participar en una relación de N:N.
/// <summary>
/// Determines whether the entity can participate in a many-to-many relationship.
/// </summary>
/// <param name="entity">Entity</param>
/// <returns></returns>
public bool EligibleCreateManyToManyRelationship(string entity)
{
CanManyToManyRequest canManyToManyRequest = new CanManyToManyRequest
{
EntityName = entity
};
CanManyToManyResponse canManyToManyResponse =
(CanManyToManyResponse)service.Execute(canManyToManyRequest);
if (!canManyToManyResponse.CanManyToMany)
{
Console.WriteLine(
"Entity {0} can't participate in a many-to-many relationship.",
entity);
}
return canManyToManyResponse.CanManyToMany;
}
Recuperar relaciones de tabla
El siguiente ejemplo de código recupera las relaciones de dos tablas creadas previamente usando RetrieveRelationshipRequest. El primer ejemplo usa MetadataId y el segundo usa Name.
//You can use either the Name or the MetadataId of the relationship.
//Retrieve the One-to-many relationship using the MetadataId.
RetrieveRelationshipRequest retrieveOneToManyRequest =
new RetrieveRelationshipRequest { MetadataId = _oneToManyRelationshipId };
RetrieveRelationshipResponse retrieveOneToManyResponse =
(RetrieveRelationshipResponse)service.Execute(retrieveOneToManyRequest);
Console.WriteLine("Retrieved {0} One-to-many relationship by id", retrieveOneToManyResponse.RelationshipMetadata.SchemaName);
//Retrieve the Many-to-many relationship using the Name.
RetrieveRelationshipRequest retrieveManyToManyRequest =
new RetrieveRelationshipRequest { Name = _manyToManyRelationshipName};
RetrieveRelationshipResponse retrieveManyToManyResponse =
(RetrieveRelationshipResponse)service.Execute(retrieveManyToManyRequest);
Console.WriteLine("Retrieved {0} Many-to-Many relationship by Name", retrieveManyToManyResponse.RelationshipMetadata.MetadataId);
Vea también
Mensajes de definición de relaciones de tablas
Nota
¿Puede indicarnos sus preferencias de idioma de documentación? Realice una breve encuesta. (tenga en cuenta que esta encuesta está en inglés)
La encuesta durará unos siete minutos. No se recopilan datos personales (declaración de privacidad).