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Sample: Convert queries between Fetch and QueryExpression

Applies To: Microsoft Dynamics CRM 2013, Microsoft Dynamics CRM Online

This sample code is for Microsoft Dynamics CRM 2013 and Microsoft Dynamics CRM Online. Download the Microsoft Dynamics CRM SDK package. It can be found in the following location in the download package:

SampleCode\CS\GeneralProgramming\Queries\FetchXmlAndQueryExpressionQueryConversion.cs

SampleCode\VB\GeneralProgramming\Queries\FetchXmlAndQueryExpressionQueryConversion.vb

Requirements

For more information about the requirements for running the sample code provided in this SDK, see Use the sample and helper code.

Demonstrates

This sample shows how to convert queries between FetchXML and Query Expression.

Example


using System;
using System.Collections.Generic;
using System.ServiceModel;
using Microsoft.Crm.Sdk.Messages;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Client;
using Microsoft.Xrm.Sdk.Query;

namespace Microsoft.Crm.Sdk.Samples
{
    public class FetchXmlAndQueryExpressionQueryConversion
    {
        
        #region Class Level Members
        private OrganizationServiceProxy _serviceProxy;
        private Guid _accountId;
        private readonly List<Guid> _contactIdList = new List<Guid>();
        private readonly List<Guid> _opportunityIdList = new List<Guid>();
        #endregion

        #region How To Sample Code
        public void Run(ServerConnection.Configuration serverConfig,
            bool promptforDelete)
        {
            using (_serviceProxy = ServerConnection.GetOrganizationProxy(serverConfig))
            {
                // This statement is required to enable early-bound type support.
                _serviceProxy.EnableProxyTypes();
                CreateRequiredRecords();
                DoQueryExpressionToFetchXmlConversion();
                DoFetchXmlToQueryExpressionConversion();
                DeleteRequiredRecords(promptforDelete);
            }
        }

        private void DoQueryExpressionToFetchXmlConversion()
        {
            // Build a query expression that we will turn into FetchXML.
            var queryExpression = new QueryExpression()
            {
                Distinct = false,
                EntityName = Contact.EntityLogicalName,
                ColumnSet = new ColumnSet("fullname", "address1_telephone1"),
                LinkEntities = 
                    {
                        new LinkEntity 
                        {
                            JoinOperator = JoinOperator.LeftOuter,
                            LinkFromAttributeName = "parentcustomerid",
                            LinkFromEntityName = Contact.EntityLogicalName,
                            LinkToAttributeName = "accountid",
                            LinkToEntityName = Account.EntityLogicalName,
                            LinkCriteria = 
                            {
                                Conditions = 
                                {
                                    new ConditionExpression("name", ConditionOperator.Equal, "Litware, Inc.")
                                }
                            }
                        }
                    },
                Criteria =
                {
                    Filters = 
                        {
                            new FilterExpression
                            {
                                FilterOperator = LogicalOperator.And,
                                Conditions = 
                                {
                                    new ConditionExpression("address1_stateorprovince", ConditionOperator.Equal, "WA"),
                                    new ConditionExpression("address1_city", ConditionOperator.In, new String[] {"Redmond", "Bellevue" , "Kirkland", "Seattle"}),
                                    new ConditionExpression("createdon", ConditionOperator.LastXDays, 30),
                                    new ConditionExpression("emailaddress1", ConditionOperator.NotNull)
                                },
                            },
                            new FilterExpression
                            {
                                FilterOperator = LogicalOperator.Or,
                                Conditions =
                                {
                                    new ConditionExpression("address1_telephone1", ConditionOperator.Like, "(206)%"),
                                    new ConditionExpression("address1_telephone1", ConditionOperator.Like, "(425)%")
                                }
                            }
                        }
                }
            };

            // Run the query as a query expression.
            EntityCollection queryExpressionResult =
                _serviceProxy.RetrieveMultiple(queryExpression);
            Console.WriteLine("Output for query as QueryExpression:");
            DisplayContactQueryResults(queryExpressionResult);

            // Convert the query expression to FetchXML.
            var conversionRequest = new QueryExpressionToFetchXmlRequest
            {
                Query = queryExpression
            };
            var conversionResponse =
                (QueryExpressionToFetchXmlResponse)_serviceProxy.Execute(conversionRequest);

            // Use the converted query to make a retrieve multiple request to Microsoft Dynamics CRM.
            String fetchXml = conversionResponse.FetchXml;
            var fetchQuery = new FetchExpression(fetchXml);
            EntityCollection result = _serviceProxy.RetrieveMultiple(fetchQuery);

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

        }

        private static void DisplayContactQueryResults(EntityCollection result)
        {
            Console.WriteLine("List all contacts matching specified parameters");
            Console.WriteLine("===============================================");
            foreach (Entity entity in result.Entities)
            {
                var contact = entity.ToEntity<Contact>();
                Console.WriteLine("Contact ID: {0}", contact.Id);
                Console.WriteLine("Contact Name: {0}", contact.FullName);
                Console.WriteLine("Contact Phone: {0}", contact.Address1_Telephone1);
            }
            Console.WriteLine("<End of Listing>");
            Console.WriteLine();
        }

        private void DoFetchXmlToQueryExpressionConversion()
        {
            // 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);

        }

        private static void DisplayOpportunityQueryResults(EntityCollection result)
        {
            Console.WriteLine("List all opportunities matching specified parameters.");
            Console.WriteLine("===========================================================================");
            foreach (Entity entity in result.Entities)
            {
                var opportunity = entity.ToEntity<Opportunity>();
                Console.WriteLine("Opportunity ID: {0}", opportunity.Id);
                Console.WriteLine("Opportunity: {0}", opportunity.Name);
                var aliased = (AliasedValue)opportunity["contact2.fullname"];
                var contactName = (String)aliased.Value;
                Console.WriteLine("Associated contact: {0}", contactName);
            }
            Console.WriteLine("<End of Listing>");
            Console.WriteLine();
        }

        /// <summary>
        /// Creates any entity records that this sample requires.
        /// </summary>
        public void CreateRequiredRecords()
        {

            // Create an account.
            var account = new Account
            {
                Name = "Litware, Inc.",
                Address1_StateOrProvince = "Colorado"
            };
            _accountId = (_serviceProxy.Create(account));

            // Create the two contacts.
            var contact = new Contact()
            {
                FirstName = "Ben",
                LastName = "Andrews",
                EMailAddress1 = "sample@example.com",
                Address1_City = "Redmond",
                Address1_StateOrProvince = "WA",
                Address1_Telephone1 = "(206)555-5555",
                ParentCustomerId = new EntityReference
                {
                    Id = _accountId,
                    LogicalName = account.LogicalName
                }
            };
            _contactIdList.Add(_serviceProxy.Create(contact));

            contact = new Contact()
            {
                FirstName = "Colin",
                LastName = "Wilcox",
                EMailAddress1 = "sample@example.com",
                Address1_City = "Bellevue",
                Address1_StateOrProvince = "WA",
                Address1_Telephone1 = "(425)555-5555",
                ParentCustomerId = new EntityReference
                {
                    Id = _accountId,
                    LogicalName = account.LogicalName
                }
            };
            _contactIdList.Add(_serviceProxy.Create(contact));

            // Create two opportunities.
            var opportunity = new Opportunity()
            {
                Name = "Litware, Inc. Opportunity 1",
                EstimatedCloseDate = DateTime.Now.AddMonths(6),
                CustomerId = new EntityReference
                {
                    Id = _accountId,
                    LogicalName = account.LogicalName
                }
            };
            _opportunityIdList.Add(_serviceProxy.Create(opportunity));

            opportunity = new Opportunity()
            {
                Name = "Litware, Inc. Opportunity 2",
                EstimatedCloseDate = DateTime.Now.AddYears(4),
                CustomerId = new EntityReference
                {
                    Id = _accountId,
                    LogicalName = account.LogicalName
                }
            };
            _opportunityIdList.Add(_serviceProxy.Create(opportunity));
        }

        /// <summary>
        /// Deletes any entity records that were created for this sample.
        /// <param name="prompt">Indicates whether to prompt the user 
        /// to delete the records created in this sample.</param>
        /// </summary>
        public void DeleteRequiredRecords(bool prompt)
        {
            bool toBeDeleted = true;

            if (prompt)
            {
                // Ask the user if the created entities should be deleted.
                Console.Write("\nDo you want these entity records deleted? (y/n) [y]: ");
                String answer = Console.ReadLine();
                if (answer.StartsWith("y") ||
                    answer.StartsWith("Y") ||
                    answer == String.Empty)
                {
                    toBeDeleted = true;
                }
                else
                {
                    toBeDeleted = false;
                }
            }

            if (toBeDeleted)
            {
                // Delete all records created in this sample.
                foreach (Guid contactId in _contactIdList)
                {
                    _serviceProxy.Delete(Contact.EntityLogicalName, contactId);
                }

                foreach (Guid opportunityId in _opportunityIdList)
                {
                    _serviceProxy.Delete(Opportunity.EntityLogicalName, opportunityId);
                }

                _serviceProxy.Delete(Account.EntityLogicalName, _accountId);

                Console.WriteLine("Entity record(s) have been deleted.");
            }
        }

        #endregion

        #region Main method

        /// <summary>
        /// Standard Main() method used by most SDK samples.
        /// </summary>
        /// <param name="args"></param>
        static public void Main(string[] args)
        {
            try
            {
                // Obtain the target organization's web address and client logon 
                // credentials from the user.
                ServerConnection serverConnect = new ServerConnection();
                ServerConnection.Configuration config = serverConnect.GetServerConfiguration();

                var app = new FetchXmlAndQueryExpressionQueryConversion();
                app.Run(config, true);
            }
            catch (FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> ex)
            {
                Console.WriteLine("The application terminated with an error.");
                Console.WriteLine("Timestamp: {0}", ex.Detail.Timestamp);
                Console.WriteLine("Code: {0}", ex.Detail.ErrorCode);
                Console.WriteLine("Message: {0}", ex.Detail.Message);
                Console.WriteLine("Plugin Trace: {0}", ex.Detail.TraceText);
                Console.WriteLine("Inner Fault: {0}",
                    null == ex.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
            }
            catch (System.TimeoutException ex)
            {
                Console.WriteLine("The application terminated with an error.");
                Console.WriteLine("Message: {0}", ex.Message);
                Console.WriteLine("Stack Trace: {0}", ex.StackTrace);
                Console.WriteLine("Inner Fault: {0}",
                    null == ex.InnerException.Message ? "No Inner Fault" : ex.InnerException.Message);
            }
            catch (System.Exception ex)
            {
                Console.WriteLine("The application terminated with an error.");
                Console.WriteLine(ex.Message);

                // Display the details of the inner exception.
                if (ex.InnerException != null)
                {
                    Console.WriteLine(ex.InnerException.Message);

                    FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> fe = ex.InnerException
                        as FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault>;
                    if (fe != null)
                    {
                        Console.WriteLine("Timestamp: {0}", fe.Detail.Timestamp);
                        Console.WriteLine("Code: {0}", fe.Detail.ErrorCode);
                        Console.WriteLine("Message: {0}", fe.Detail.Message);
                        Console.WriteLine("Plugin Trace: {0}", fe.Detail.TraceText);
                        Console.WriteLine("Inner Fault: {0}",
                            null == fe.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
                    }
                }
            }
            // Additional exceptions to catch: SecurityTokenValidationException, ExpiredSecurityTokenException,
            // SecurityAccessDeniedException, MessageSecurityException, and SecurityNegotiationException.

            finally
            {
                Console.WriteLine("Press <Enter> to exit.");
                Console.ReadLine();
            }
        }
        #endregion Main method
    }
}

See Also

Microsoft Dynamics CRM 2013 and Microsoft Dynamics CRM Online
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