Dynamic CRM 2013学习笔记（十）客户端几种查询数据方式比较

我们经常要在客户端进行数据查询，下面分别比较常用的几种查询方式：XMLHttpRequest, SDK.JQuery, SDK.Rest.

XMLHttpRequest是最基本的调用方式，JQuery和Rest的二种方式其实也是用的XMLHttpRequest，只不过是把它封装了一下

JQuery和Rest二种方式的接口一样，所以调用方式也一样

1. XMLHttpRequest

• 定义

  1: function ODataRetrieve(oDataString) {

  2:     var ServerUrl = Xrm.Page.context.getClientUrl();

  3:     if (ServerUrl.match(/\/$/)) {

  4:         ServerUrl = ServerUrl.substring(0, ServerUrl.length - 1);

  5:     }

  6:     var retrieveReq = new XMLHttpRequest();

  7:     retrieveReq.open("GET", ServerUrl + "/XRMServices/2011/OrganizationData.svc/" + oDataString, false);

  8:     retrieveReq.setRequestHeader("Accept", "application/json");

  9:     retrieveReq.setRequestHeader("Content-Type", "application/json;charset=utf-8");

 10:     retrieveReq.send();

 11:     return JSON.parse(retrieveReq.responseText).d;

 12: }

• 调用方法：

  1: var retrievedContact = ODataRetrieve("ContactSet(guid'" + ContactAttribute.getValue()[0].id + "')?Select=JobTitle,MobilePhone");

  2:     if (retrievedContact != null) {

  3:         ContactJobAttribute.setValue(retrievedContact.JobTitle);

  4:         ContactPhoneAttribute.setValue(retrievedContact.MobilePhone);

  5: }

2. SDK.JQuery

• SDK.JQuery.js 位于SDK\SampleCode\JS\RESTEndpoint\JQueryRESTDataOperations\JQueryRESTDataOperations\Scripts下

  1: retrieveRecord: function (id, type, select, expand, successCallback, errorCallback)

  2: retrieveMultipleRecords: function (type, options, successCallback, errorCallback, OnComplete)

• 调用方法：

  1: SDK.JQuery.retrieveRecord(

  2:      AccountId,

  3:      "Account",

  4:      null, null,

  5:      function (account) {

  6:       writeMessage("Retrieved the account named \"" + account.Name + "\". This account was created on : \"" + account.CreatedOn + "\".");

  7:       updateAccount(AccountId);

  8:      },

  9:      errorHandler

 10:    );

 11: 

  1: SDK.JQuery.retrieveMultipleRecords(

  2:      "Contact",

  3:      "$select=ContactId,FullName&$top=1",

  4:      function (results) {

  5:       var firstResult = results[0];

  6:       if (firstResult != null) {

  7:        primaryContact = results[0];

  8:       }

  9:       else {

 10:        writeMessage("No Contact records are available to set as the primary contact for the account.");

 11:       }

 12:      },

 13:      errorHandler,

 14:      function () {

 15:       //OnComplete handler

 16:      }

 17:    );

 18: 

3. SDK.Rest

• SDK.Rest.js 位于SDK\SampleCode\JS\RESTEndpoint\JavaScriptRESTAssociateDisassociate\JavaScriptRESTAssociateDisassociate\Scripts下

  1: retrieveRecord: function (id, type, select, expand, successCallback, errorCallback)

  2: retrieveMultipleRecords: function (type, options, successCallback, errorCallback, OnComplete)

• 调用方法：

  1:  SDK.REST.retrieveRecord(

  2:      AccountId,

  3:      "Account",

  4:      null,null,

  5:      function (account) {

  6:       writeMessage("Retrieved the account named \"" + account.Name + "\". This account was created on : \"" + account.CreatedOn + "\".");

  7:       updateAccount(AccountId);

  8:      },

  9:      errorHandler

 10:    );

 11: 

  1: SDK.REST.retrieveMultipleRecords(

  2:      "Contact",

  3:      "$select=ContactId,FullName&$top=1",

  4:      function (results) {

  5:       var firstResult = results[0];

  6:       if (firstResult != null) {

  7:        primaryContact = results[0];

  8:       }

  9:       else {

 10:        writeMessage("No Contact records are available to set as the primary contact for the account.");

 11:       }

 12:      },

 13:      errorHandler,

 14:      function () {

 15:      //OnComplete handler

 16:       }

 17:    );

 18: 

Dynamic CRM 2013学习笔记 系列汇总