FetchXmlToQueryExpressionRequest Klasse

Artikel
07/17/2015

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 (in Microsoft.Crm.Sdk.Proxy.dll)

Syntax

'Declaration
<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

Beispiel

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);

Anmerkungen

Message Availability

Diese Meldung funktioniert unabhängig davon, ob der Anrufer mit dem Server verbunden oder offline ist.

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.

Vererbungshierarchie

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

Thread-Sicherheit

Alle öffentlichen statischen Mitglieder (Shared in Visual Basic) dieses Typs sind thread-sicher. Bei Instanzmitgliedern kann keine Garantie für die Thread-Sicherheit übernommen werden.

Plattformen

Development Platforms

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

Target Platforms

Windows Server 2008,Windows Server 2012,Windows 7

Change History

Siehe auch

Referenz

FetchXmlToQueryExpressionRequest Mitglieder
Microsoft.Crm.Sdk.Messages Namespace
FetchXmlToQueryExpressionResponse

Weitere Ressourcen

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

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