Classe FetchXmlToQueryExpressionRequest

Artigo
12/03/2014

Aplica-se a: CRM 2015 on-prem, CRM Online

Contains the data that is needed to convert a query in FetchXML to a QueryExpression.

Namespace: Microsoft.Crm.Sdk.Messages
Assembly: Microsoft.Crm.Sdk.Proxy (em Microsoft.Crm.Sdk.Proxy.dll)

Sintaxe

'Declaração
<DataContractAttribute(Namespace:="https://schemas.microsoft.com/crm/2011/Contracts")> _
Public NotInheritable Class FetchXmlToQueryExpressionRequest
    Inherits OrganizationRequest

[DataContractAttribute(Namespace="https://schemas.microsoft.com/crm/2011/Contracts")] 
public sealed class FetchXmlToQueryExpressionRequest : OrganizationRequest

Exemplo

The following example shows how to use this message. For this sample to work correctly, you must be connected to the server to get an IOrganizationService interface. For the complete sample, see the link later in this topic.

// Create a Fetch query that we will convert into a query expression.
var fetchXml =
    @"<fetch mapping='logical' version='1.0'>
     <entity name='opportunity'>
      <attribute name='name' />
      <filter>
       <condition attribute='estimatedclosedate' operator='next-x-fiscal-years' value='3' />
      </filter>
      <link-entity name='account' from='accountid' to='customerid'>
       <link-entity name='contact' from='parentcustomerid' to='accountid'>
        <attribute name='fullname' />
        <filter>
         <condition attribute='address1_city' operator='eq' value='Bellevue' />
         <condition attribute='address1_stateorprovince' operator='eq' value='WA' />
        </filter>
       </link-entity>
      </link-entity>
     </entity>
    </fetch>";

// Run the query with the FetchXML.
var fetchExpression = new FetchExpression(fetchXml);
EntityCollection fetchResult =
    _serviceProxy.RetrieveMultiple(fetchExpression);
Console.WriteLine("\nOutput for query as FetchXML:");
DisplayOpportunityQueryResults(fetchResult);

// Convert the FetchXML into a query expression.
var conversionRequest = new FetchXmlToQueryExpressionRequest
{
    FetchXml = fetchXml
};

var conversionResponse =
    (FetchXmlToQueryExpressionResponse)_serviceProxy.Execute(conversionRequest);

// Use the newly converted query expression to make a retrieve multiple
// request to Microsoft Dynamics CRM.
QueryExpression queryExpression = conversionResponse.Query;

EntityCollection result = _serviceProxy.RetrieveMultiple(queryExpression);

// Display the results.
Console.WriteLine("\nOutput for query after conversion to QueryExpression:");
DisplayOpportunityQueryResults(result);

Comentários

Message Availability

Esta mensagem funciona independentemente de o chamador estar conectado ao servidor ou offline.

Usage

Pass an instance of this class to the Execute method, which returns an instance of FetchXmlToQueryExpressionResponse.

Privileges and Access Rights

For a complete list of the required privileges, see FetchXmlToQueryExpression Privileges.

Notes for Callers

The use of the keyword Distinct in query expressions is different from the FetchXML query language. When mapping a query from Fetch to QueryExpression, results will not be consistent if the Distinct keyword is used in the FetchXML string.

Hierarquia de Herança

System.Object
Microsoft.Xrm.Sdk.OrganizationRequest
Microsoft.Crm.Sdk.Messages.FetchXmlToQueryExpressionRequest

Segurança do Thread

Todos os membros estáticos (Shared in Visual Basic) desse tipo são protegidos por thread. Não há nenhum garantia de que os membros de instância sejam protegidos por thread.

Plataformas

Plataformas de desenvolvimento

Windows Vista, Windows Server 2003 e

Plataformas de destino

Windows Vista,Windows XP

Change History

Consulte também

Referência

Membros de FetchXmlToQueryExpressionRequest
Namespace Microsoft.Crm.Sdk.Messages
FetchXmlToQueryExpressionResponse

Outros recursos

Create Queries to Retrieve Data
FetchXML Schema
Sample: Convert Queries Between Fetch and Query Expression

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