Esempio: creare, recuperare, aggiornare e eliminare utilizzando l'endpoint OData con JavaScript e jQuery

Articolo
07/06/2017

Data di pubblicazione: novembre 2016

Si applica a: Dynamics CRM 2015

Questo codice di esempio è per Aggiornamento di Microsoft Dynamics CRM 2015 e Microsoft Dynamics CRM Online 2015.Scarica il pacchetto SDK di Microsoft Dynamics CRM. È disponibile nel percorso seguente nel pacchetto di download:

SampleCode\JS\RESTEndpoint\JQueryRESTDataOperations

Importante

Si consiglia di non utilizzare jQuery in script o i comandi della barra multifunzione di moduli. Vedere Esempio: creare, recuperare, aggiornare e eliminare utilizzando l'endpoint OData con JavaScript per una libreria di esempio contenente le stesse funzionalità senza una dipendenza in jQuery.

Ulteriori informazioni:Utilizzare jQuery.

Nota

Se si desidera visualizzare solo il funzionamento di questo esempio, è possibile installare (importare) la soluzione gestita JQueryRESTDataOperations_1_0_1_2_managed.zip inclusa nei file di download. In questo modo si installa la soluzione Operazioni dati di JQuery REST. Se si installa questa soluzione gestita e si desidera creare le risorse Web utilizzando i nomi riportati di seguito, il prefisso di personalizzazione dell'autore della soluzione non può essere "esempio" a meno che non si disinstalli (elimini) la soluzione gestita.

Requisiti

In questo esempio vengono utilizzate le seguenti risorse Web:

sample_/JQueryRESTDataOperations.htm
Utilizzare questa pagina HTML per avviare l'esempio e visualizzare lo stato di avanzamento delle azioni. Questa pagina è la pagina di configurazione per la soluzione Operazioni dati JQuery REST.
sample_/Scripts/jquery1.9.1.min.js
La versione ridotta di jQuery inclusa nei progetti dell'applicazione Web Microsoft Visual Studio. Il contenuto della libreria non è incluso qui.
sample_/Scripts/JQueryRESTDataOperationsSample.js
Una risorsa Web JScript che esegue le operazioni. La libreria dipende dalla libreria di SDK.JQuery.js.
sample_/Scripts/SDK.JQuery.js
Una risorsa Web JScript contenente una libreria riutilizzabile per eseguire azioni con l'endpoint REST utilizzando JQuery.

Nota

Una libreria simile senza la dipendenza in JQuery è disponibile in Esempio: creare, recuperare, aggiornare e eliminare utilizzando l'endpoint OData con JavaScript.

Nota

Il prefisso di personalizzazione “sample_” non è utilizzato nel codice. Tali esempi funzioneranno utilizzando il prefisso di personalizzazione di qualsiasi autore. Tuttavia, il percorso relativo della cartella di Scripts simulata deve essere incluso nel nome delle risorse Web.

Dimostra

Questo esempio:

Eseguire, creare, recuperare, aggiornare ed eliminare le operazioni utilizzando l'endpoint REST con JScript e jQuery.
Utilizza jQueryuna libreria molto comune che include funzionalità per eseguire operazioni sui dati utilizzando il metodo $.ajax.
In sequenza esegue le operazioni su un nuovo record di account.

Quando si esegue l'esempio è possibile scegliere se eliminare il record creato.
Visualizza risultati simili ai seguenti quando si visualizza l'anteprima della risorsa Web sample_/JQueryRESTDataOperations.htm:
1. Impostazione del contatto principale su: <il nome completo del record del contatto nel sistema>.
2. Impostazione del metodo di contatto preferito su posta elettronica.
3. Impostazione di Ricavi annuali su Due milioni.
4. Impostazione del metodo di contatto telefono su "Non consentire".
5. L'account denominato "Verifica nome di account" è stato creato con l'AccountId: "7780cef2-fdf4-e011-9d26-00155dba3819".
6. Recupero dell'account con l'AccountId: "7780cef2-fdf4-e011-9d26-00155dba3819".
7. Ha recuperato l'account denominato "Verifica nome di account". Questo account è stato creato il: "mercoledì 12 ottobre 11: 13:56 PDT 2011".
8. Modifica del nome di account su "Nome di account aggiornato".
9. Aggiunta di informazioni sull'indirizzo.
10. Impostazione di un indirizzo di posta elettronica.
11. Le modifiche ai record di account sono state salvate
12. Si è scelto di eliminare il record di account.
13. L'account è stato eliminato.

Se si sceglie di non eliminare l'account verrà visualizzato un collegamento per aprire il record che è stato creato.

sample_/JQueryRESTDataOperations.htm

Questa pagina contiene alcune spiegazioni e i pulsanti per avviare e reimpostare l'esempio.


<html lang="en-us">
<head>
 <title>JQuery REST Data Operations</title>
 <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <script src="Scripts/jquery_1.9.1.min.js"></script>
 <script src="Scripts/SDK.JQuery.js" type="text/javascript"></script>
 <script src="Scripts/JQueryRESTDataOperationsSample.js" type="text/javascript"></script>

<!-- /WebResources/ClientGlobalContext.js.aspx is accessed using a relative path
because the name of the Web Resource created from this file is "sample_/JQueryRESTDataOperationsSample.htm".

The use of the backslash within the name creates a virtual folder that must be considered
in relative links between Web Resources.
-->
 <script type="text/javascript" src="../ClientGlobalContext.js.aspx"></script>

</head>
<body style="background-color: White; font-family:Segoe UI;">
<h1>JavaScript jQuery REST Data Operations Sample</h1>
<p>This page uses the <b>sample_/Scripts/JQueryRESTDataOperationsSample.js</b> JScript library to create, retrieve, and update an
 account record. It also provides the option to delete or view the record.</p>
<p>The <b>sample_/Scripts/JQueryRESTDataOperationsSample.js</b> JScript library uses the <b>sample_/Scripts/SDK.JQuery.js</b> JScript library to perform the data operations.</p>
<p>Use the buttons below to verify the functionality of this sample.</p>
 <button id="start" title="Click this button to start the sample.">
  Start</button>
 <button id="reset" title="Click this button to reset the sample." disabled="disabled">
  Reset</button>
 <ol id="output">
 </ol>
</body>
</html>

sample_/Scripts/JQueryRESTDataOperationsSample.js

Questa libreria contenente le funzionalità per la gestione degli elementi di interfaccia utente nella pagina e include le azioni eseguite dall'esempio. Le funzioni in questa libreria dipendono da metodi riutilizzabili, generici trovati in sample_/Scripts/SDK.JQuery.js.


/// <reference path="SDK.JQuery.js" />
/// <reference path="jquery-1.9.1.js" />


var primaryContact = null;
var startButton;
var resetButton;
var output; //The <ol> element used by the writeMessage function to display text showing the progress of this sample.


$(function () {
 getFirstContactToBePrimaryContact();
 startButton = $("#start");
 startButton.click(createAccount);
 resetButton = $("#reset");
 resetButton.click(resetSample);
 output = $("#output");

});


function createAccount() {
 startButton.attr("disabled", "disabled");
 var account = {};
 account.Name = "Test Account Name";
 account.Description = "This account was created by the JQueryRESTDataOperations sample.";
 if (primaryContact != null) {
  //Set a lookup value
  writeMessage("Setting the primary contact to: " + primaryContact.FullName + ".");
  account.PrimaryContactId = { Id: primaryContact.ContactId, LogicalName: "contact", Name: primaryContact.FullName };

 }
 //Set a picklist value
 writeMessage("Setting Preferred Contact Method to E-mail.");
 account.PreferredContactMethodCode = { Value: 2 }; //E-mail

 //Set a money value
 writeMessage("Setting Annual Revenue to Two Million .");
 account.Revenue = { Value: "2000000.00" }; //Set Annual Revenue

 //Set a Boolean value
 writeMessage("Setting Contact Method Phone to \"Do Not Allow\".");
 account.DoNotPhone = true; //Do Not Allow

 //Add Two Tasks
 var today = new Date();
 var startDate = new Date(today.getFullYear(), today.getMonth(), today.getDate() + 3); //Set a date three days in the future.

 var LowPriTask = { Subject: "Low Priority Task", ScheduledStart: startDate, PriorityCode: { Value: 0} }; //Low Priority Task
 var HighPriTask = { Subject: "High Priority Task", ScheduledStart: startDate, PriorityCode: { Value: 2} }; //High Priority Task
 account.Account_Tasks = [LowPriTask, HighPriTask]



 //Create the Account
 SDK.JQuery.createRecord(
     account,
     "Account",
     function (account) {
      writeMessage("The account named \"" + account.Name + "\" was created with the AccountId : \"" + account.AccountId + "\".");
      writeMessage("Retrieving account with the AccountId: \"" + account.AccountId + "\".");
      retrieveAccount(account.AccountId)
     },
     errorHandler
   );

}

function retrieveAccount(AccountId) {
 SDK.JQuery.retrieveRecord(
     AccountId,
     "Account",
     null, null,
     function (account) {
      writeMessage("Retrieved the account named \"" + account.Name + "\". This account was created on : \"" + account.CreatedOn + "\".");
      updateAccount(AccountId);
     },
     errorHandler
   );
}

function updateAccount(AccountId) {
 var account = {};
 writeMessage("Changing the account Name to \"Updated Account Name\".");
 account.Name = "Updated Account Name";
 writeMessage("Adding Address information");
 account.Address1_AddressTypeCode = { Value: 3 }; //Address 1: Address Type = Primary
 account.Address1_City = "Sammamish";
 account.Address1_Line1 = "123 Maple St.";
 account.Address1_PostalCode = "98074";
 account.Address1_StateOrProvince = "WA";
 writeMessage("Setting E-Mail address");
 account.EMailAddress1 = "someone@microsoft.com";


 SDK.JQuery.updateRecord(
     AccountId,
     account,
     "Account",
     function () {
      writeMessage("The account record changes were saved");
      deleteAccount(AccountId);
     },
     errorHandler
   );
}

function deleteAccount(AccountId) {
 if (confirm("Do you want to delete this account record?")) {
  writeMessage("You chose to delete the account record.");
  SDK.JQuery.deleteRecord(
       AccountId,
       "Account",
       function () {
        writeMessage("The account was deleted.");
        enableResetButton();
       },
       errorHandler
     );
 }
 else {
  var urlToAccountRecord = SDK.JQuery._getClientUrl() + "/main.aspx?etc=1&amp;id=%7b" + AccountId + "%7d&amp;pagetype=entityrecord";
  $("<li><span>You chose not to delete the record. You can view the record </span><a href='" +
  urlToAccountRecord + 
  "' target='_blank'>here</a></li>").appendTo(output);
  enableResetButton();
 }
}

function getFirstContactToBePrimaryContact() {

 SDK.JQuery.retrieveMultipleRecords(
     "Contact",
     "$select=ContactId,FullName&amp;$top=1",
     function (results) {
      var firstResult = results[0];
      if (firstResult != null) {
       primaryContact = results[0];
      }
      else {
       writeMessage("No Contact records are available to set as the primary contact for the account.");
      }
     },
     errorHandler,
     function () {
      //OnComplete handler
     }
   );
}

function errorHandler(error) {
 writeMessage(error.message);
}

function enableResetButton() {
 resetButton.removeAttr("disabled");
}

function resetSample() {
 output.empty();
 startButton.removeAttr("disabled");
 resetButton.attr("disabled", "disabled");
}

//Helper function to write data to this page:
function writeMessage(message) {
 $("<li>" + message + "</li>").appendTo(output);
}

sample_/Scripts/SDK.JQuery.js

Questa libreria contiene i metodi pubblici per le operazioni seguenti:

createRecord
retrieveRecord
updateRecord
deleteRecord
retrieveMultipleRecords

Ognuno di questi metodi include un parametro successCallback and errorCallback. Questi parametri accettano un riferimento a una funzione che è chiamata quando l'operazione sui dati ha esito positivo o negativo.


/// <reference path="jquery1.4.1vsdoc.js" />

if (typeof (SDK) == "undefined")
{ SDK = { __namespace: true }; }
SDK.JQuery = {
 _context: function () {
  ///<summary>
  /// Private function to the context object.
  ///</summary>
  ///<returns>Context</returns>
  if (typeof GetGlobalContext != "undefined")
  { return GetGlobalContext(); }
  else {
   if (typeof Xrm != "undefined") {
    return Xrm.Page.context;
   }
   else
   { throw new Error("Context is not available."); }
  }
 },
 _getClientUrl: function () {
  ///<summary>
  /// Private function to return the server URL from the context
  ///</summary>
  ///<returns>String</returns>
  var serverUrl = this._context().getClientUrl()

  return serverUrl;
 },
 _ODataPath: function () {
  ///<summary>
  /// Private function to return the path to the REST endpoint.
  ///</summary>
  ///<returns>String</returns>
  return this._getClientUrl() + "/XRMServices/2011/OrganizationData.svc/";
 },
 _errorHandler: function (req) {
  ///<summary>
  /// Private function return an Error object to the errorCallback
  ///</summary>
  ///<param name="req" type="XMLHttpRequest">
  /// The XMLHttpRequest response that returned an error.
  ///</param>
  ///<returns>Error</returns>
  return new Error("Error : " +
        req.status + ": " +
        req.statusText + ": " +
        JSON.parse(req.responseText).error.message.value);
 },
 _dateReviver: function (key, value) {
  ///<summary>
  /// Private function to convert matching string values to Date objects.
  ///</summary>
  ///<param name="key" type="String">
  /// The key used to identify the object property
  ///</param>
  ///<param name="value" type="String">
  /// The string value representing a date
  ///</param>
  var a;
  if (typeof value === 'string') {
   a = /Date\(([-+]?\d+)\)/.exec(value);
   if (a) {
    return new Date(parseInt(value.replace("/Date(", "").replace(")/", ""), 10));
   }
  }
  return value;
 },
 _parameterCheck: function (parameter, message) {
  ///<summary>
  /// Private function used to check whether required parameters are null or undefined
  ///</summary>
  ///<param name="parameter" type="Object">
  /// The parameter to check;
  ///</param>
  ///<param name="message" type="String">
  /// The error message text to include when the error is thrown.
  ///</param>
  if ((typeof parameter === "undefined") || parameter === null) {
   throw new Error(message);
  }
 },
 _stringParameterCheck: function (parameter, message) {
  ///<summary>
  /// Private function used to check whether required parameters are null or undefined
  ///</summary>
  ///<param name="parameter" type="String">
  /// The string parameter to check;
  ///</param>
  ///<param name="message" type="String">
  /// The error message text to include when the error is thrown.
  ///</param>
  if (typeof parameter != "string") {
   throw new Error(message);
  }
 },
 _callbackParameterCheck: function (callbackParameter, message) {
  ///<summary>
  /// Private function used to check whether required callback parameters are functions
  ///</summary>
  ///<param name="callbackParameter" type="Function">
  /// The callback parameter to check;
  ///</param>
  ///<param name="message" type="String">
  /// The error message text to include when the error is thrown.
  ///</param>
  if (typeof callbackParameter != "function") {
   throw new Error(message);
  }
 },
 createRecord: function (object, type, successCallback, errorCallback) {
  ///<summary>
  /// Sends an asynchronous request to create a new record.
  ///</summary>
  ///<param name="object" type="Object">
  /// A JavaScript object with properties corresponding to the Schema name of
  /// entity attributes that are valid for create operations.
  ///</param>
  this._parameterCheck(object, "SDK.JQuery.createRecord requires the object parameter.");
  ///<param name="type" type="String">
  /// The Schema Name of the Entity type record to create.
  /// For an Account record, use "Account"
  ///</param>
  this._stringParameterCheck(type, "SDK.JQuery.createRecord requires the type parameter is a string.");
  ///<param name="successCallback" type="Function">
  /// The function that will be passed through and be called by a successful response. 
  /// This function can accept the returned record as a parameter.
  /// </param>
  this._callbackParameterCheck(successCallback, "SDK.JQuery.createRecord requires the successCallback is a function.");
  ///<param name="errorCallback" type="Function">
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter.
  /// </param>
  this._callbackParameterCheck(errorCallback, "SDK.JQuery.createRecord requires the errorCallback is a function.");

  var jsonEntity = window.JSON.stringify(object);

  $.ajax({ type: "POST",
   contentType: "application/json; charset=utf-8",
   datatype: "json",
   url: this._ODataPath() + type + "Set",
   data: jsonEntity,
   beforeSend: function (xhr) {
    //Specifying this header ensures that the results will be returned as JSON.             
    xhr.setRequestHeader("Accept", "application/json");
   },
   success: function (data, textStatus, xhr) {
    successCallback(data.d);
   },
   error: function (xhr, textStatus, errorThrown) {
    errorCallback(SDK.JQuery._errorHandler(xhr));
   }
  });
 },
 retrieveRecord: function (id, type, select, expand, successCallback, errorCallback) {
  ///<summary>
  /// Sends an asynchronous request to retrieve a record.
  ///</summary>
  ///<param name="id" type="String">
  /// A String representing the GUID value for the record to retrieve.
  ///</param>
  this._stringParameterCheck(id, "SDK.JQuery.retrieveRecord requires the id parameter is a string.");
  ///<param name="type" type="String">
  /// The Schema Name of the Entity type record to retrieve.
  /// For an Account record, use "Account"
  ///</param>
  this._stringParameterCheck(type, "SDK.JQuery.retrieveRecord requires the type parameter is a string.");
  ///<param name="select" type="String">
  /// A String representing the $select OData System Query Option to control which
  /// attributes will be returned. This is a comma separated list of Attribute names that are valid for retrieve.
  /// If null all properties for the record will be returned
  ///</param>
  if (select != null)
   this._stringParameterCheck(select, "SDK.JQuery.retrieveRecord requires the select parameter is a string.");
  ///<param name="expand" type="String">
  /// A String representing the $expand OData System Query Option value to control which
  /// related records are also returned. This is a comma separated list of of up to 6 entity relationship names
  /// If null no expanded related records will be returned.
  ///</param>
  if (expand != null)
   this._stringParameterCheck(expand, "SDK.JQuery.retrieveRecord requires the expand parameter is a string.");
  ///<param name="successCallback" type="Function">
  /// The function that will be passed through and be called by a successful response. 
  /// This function must accept the returned record as a parameter.
  /// </param>
  this._callbackParameterCheck(successCallback, "SDK.JQuery.retrieveRecord requires the successCallback parameter is a function.");
  ///<param name="errorCallback" type="Function">
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter.
  /// </param>
  this._callbackParameterCheck(errorCallback, "SDK.JQuery.retrieveRecord requires the errorCallback parameter is a function.");

  var systemQueryOptions = "";

  if (select != null || expand != null) {
   systemQueryOptions = "?";
   if (select != null) {
    var selectString = "$select=" + select;
    if (expand != null) {
     selectString = selectString + "," + expand;
    }
    systemQueryOptions = systemQueryOptions + selectString;
   }
   if (expand != null) {
    systemQueryOptions = systemQueryOptions + "&amp;$expand=" + expand;
   }
  }

  $.ajax({
   type: "GET",
   contentType: "application/json; charset=utf-8",
   datatype: "json",
   url: this._ODataPath() + type + "Set" + "(guid'" + id + "')" + systemQueryOptions,
   beforeSend: function (xhr) {
    //Specifying this header ensures that the results will be returned as JSON.             
    xhr.setRequestHeader("Accept", "application/json");
   },
   success: function (data, textStatus, xhr) {
    //JQuery does not provide an opportunity to specify a date reviver so this code
   // parses the xhr.responseText rather than use the data parameter passed by JQuery.
    successCallback(JSON.parse(xhr.responseText, SDK.JQuery._dateReviver).d);
   },
   error: function (xhr, textStatus, errorThrown) {
    errorCallback(SDK.JQuery._errorHandler(xhr));
   }
  });
 },
 updateRecord: function (id, object, type, successCallback, errorCallback) {
  ///<summary>
  /// Sends an asynchronous request to update a record.
  ///</summary>
  ///<param name="id" type="String">
  /// A String representing the GUID value for the record to retrieve.
  ///</param>
  this._stringParameterCheck(id, "SDK.JQuery.updateRecord requires the id parameter.");
  ///<param name="object" type="Object">
  /// A JavaScript object with properties corresponding to the Schema Names for
  /// entity attributes that are valid for update operations.
  ///</param>
  this._parameterCheck(object, "SDK.JQuery.updateRecord requires the object parameter.");
  ///<param name="type" type="String">
  /// The Schema Name of the Entity type record to retrieve.
  /// For an Account record, use "Account"
  ///</param>
  this._stringParameterCheck(type, "SDK.JQuery.updateRecord requires the type parameter.");
  ///<param name="successCallback" type="Function">
  /// The function that will be passed through and be called by a successful response. 
  /// Nothing will be returned to this function.
  /// </param>
  this._callbackParameterCheck(successCallback, "SDK.JQuery.updateRecord requires the successCallback is a function.");
  ///<param name="errorCallback" type="Function">
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter.
  /// </param>
  this._callbackParameterCheck(errorCallback, "SDK.JQuery.updateRecord requires the errorCallback is a function.");

  var jsonEntity = window.JSON.stringify(object);

  $.ajax({
   type: "POST",
   contentType: "application/json; charset=utf-8",
   datatype: "json",
   data: jsonEntity,
   url: this._ODataPath() + type + "Set" + "(guid'" + id + "')",
   beforeSend: function (xhr) {
    //Specifying this header ensures that the results will be returned as JSON.             
    xhr.setRequestHeader("Accept", "application/json");
    //Specify the HTTP method MERGE to update just the changes you are submitting.             
    xhr.setRequestHeader("X-HTTP-Method", "MERGE");
   },
   success: function (data, textStatus, xhr) {
   //Nothing is returned to the success function
    successCallback();
   },
   error: function (xhr, textStatus, errorThrown) {
    errorCallback(SDK.JQuery._errorHandler(xhr));
   }
  });
 },
 deleteRecord: function (id, type, successCallback, errorCallback) {
  ///<summary>
  /// Sends an asynchronous request to delete a record.
  ///</summary>
  ///<param name="id" type="String">
  /// A String representing the GUID value for the record to delete.
  ///</param>
  this._stringParameterCheck(id, "SDK.JQuery.deleteRecord requires the id parameter.");
  ///<param name="type" type="String">
  /// The Schema Name of the Entity type record to delete.
  /// For an Account record, use "Account"
  ///</param>
  this._stringParameterCheck(type, "SDK.JQuery.deleteRecord requires the type parameter.");
  ///<param name="successCallback" type="Function">
  /// The function that will be passed through and be called by a successful response. 
  /// Nothing will be returned to this function.
  /// </param>
  this._callbackParameterCheck(successCallback, "SDK.JQuery.deleteRecord requires the successCallback is a function.");
  ///<param name="errorCallback" type="Function">
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter.
  /// </param>
  this._callbackParameterCheck(errorCallback, "SDK.JQuery.deleteRecord requires the errorCallback is a function.");

  $.ajax({
   type: "POST",
   contentType: "application/json; charset=utf-8",
   datatype: "json",
   url: this._ODataPath() + type + "Set(guid'" + id + "')",
   beforeSend: function (XMLHttpRequest) {
    //Specifying this header ensures that the results will be returned as JSON.                 
    XMLHttpRequest.setRequestHeader("Accept", "application/json");
    //Specify the HTTP method DELETE to perform a delete operation.                 
    XMLHttpRequest.setRequestHeader("X-HTTP-Method", "DELETE");
   },
   success: function (data, textStatus, xhr) {
   // Nothing is returned to the success function.
    successCallback();
   },
   error: function (xhr, textStatus, errorThrown) {
    errorCallback(SDK.JQuery._errorHandler(xhr));
   }
  });
 },
 retrieveMultipleRecords: function (type, options, successCallback, errorCallback, OnComplete) {
  ///<summary>
  /// Sends an asynchronous request to retrieve records.
  ///</summary>
  ///<param name="type" type="String">
  /// The Schema Name of the Entity type records to retrieve
  /// For an Account record, use "Account"
  ///</param>
  this._stringParameterCheck(type, "SDK.JQuery.retrieveMultipleRecords requires the type parameter is a string.");
  ///<param name="options" type="String">
  /// A String representing the OData System Query Options to control the data returned
  /// Do not include the $top option, use the top parameters to set the maximum number of records to return.
  ///</param>
  if (options != null)
   this._stringParameterCheck(options, "SDK.JQuery.retrieveMultipleRecords requires the options parameter is a string.");
  ///<param name="successCallback" type="Function">
  /// The function that will be passed through and be called for each page of records returned.
  /// This function should loop through the results and push the records into an array.
  /// </param>
  this._callbackParameterCheck(successCallback, "SDK.JQuery.retrieveMultipleRecords requires the successCallback parameter is a function.");
  ///<param name="errorCallback" type="Function">
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter.
  /// </param>
  this._callbackParameterCheck(errorCallback, "SDK.JQuery.retrieveMultipleRecords requires the errorCallback parameter is a function.");
  ///<param name="OnComplete" type="Function">
  /// The function that will be called when all the requested records have been returned.
  /// No parameters are passed to this function.
  /// </param>
  this._callbackParameterCheck(OnComplete, "SDK.JQuery.retrieveMultipleRecords requires the OnComplete parameter is a function.");

  var optionsString;
  if (options != null) {
   if (options.charAt(0) != "?") {
    optionsString = "?" + options;
   }
   else
   { optionsString = options; }
  }

  $.ajax({
   type: "GET",
   contentType: "application/json; charset=utf-8",
   datatype: "json",
   url: this._ODataPath() + type + "Set" + optionsString,
   beforeSend: function (XMLHttpRequest) {
    //Specifying this header ensures that the results will be returned as JSON.             
    XMLHttpRequest.setRequestHeader("Accept", "application/json");
   },
   success: function (data, textStatus, xhr) {
    if (data &amp;&amp; data.d &amp;&amp; data.d.results) {
     successCallback(JSON.parse(xhr.responseText, SDK.JQuery._dateReviver).d.results);
     if (data.d.__next != null) {
      var queryOptions = data.d.__next.substring((SDK.JQuery._ODataPath() + type + "Set").length);
      SDK.JQuery.retrieveMultipleRecords(type, queryOptions, successCallback, errorCallback, OnComplete);
     }
     else
     { OnComplete(); }
    }
   },
   error: function (xhr, textStatus, errorThrown) {
    errorCallback(SDK.JQuery._errorHandler(xhr));
   }
  });
 },
 __namespace: true
};

Vedere anche

JQuery
Utilizzare l'endpoint OData con risorse Web
Esempio: creare, recuperare, aggiornare e eliminare utilizzando l'endpoint OData con JavaScript
Esempio: Recuperare più record utilizzando l'endpoint OData con JavaScript
Articolo tecnico: Utilizzo delle opzioni Set di opzioni con l'endpoint REST - JScript

Condividi tramite

Esempio: creare, recuperare, aggiornare e eliminare utilizzando l'endpoint OData con JavaScript e jQuery

Requisiti

Dimostra

sample_/JQueryRESTDataOperations.htm

sample_/Scripts/JQueryRESTDataOperationsSample.js

sample_/Scripts/SDK.JQuery.js

Vedere anche

Risorse aggiuntive