CRM 2011 concurrency问题及解决方案

CRM 2011 concurrency问题及解决方案2015-06-03CRM2011对删除和添加操作会自动做判断，比如A打开纪录x，B也打开纪录x，然后B删除了纪录x，A去更新的话就会有提示。更新的话是后者覆盖前者，比如A打开纪录x，B打开纪录x，然后B把记录x中的字段y更新成了3，然后点保存，A把字段y更新成了5保存，最后5会覆盖3。这篇日志解决的问题就是当A改成5想保存的时候提示记录x已在某个时间点被某人更新过了，如果继续保存就会覆盖记录，否则放弃保存。

用js完成整个验证，然后注册form的onload和onsave达到目的，当然也要添加jquery和json2两个js类库

上js先

var previousModificationDateOnLoad;//var serverUrl = Xrm.Page.context.getServerUrl（）;var serverUrl = document.location.protocol + "//" + document.location.host + "/" + Xrm.Page.context.getOrgUniqueName（）;var ODATA_ENDPOINT = "/XRMServices/2011/OrganizationData.svc";var recordId;var entityName;function getPreviousModificationDate（）{recordId = Xrm.Page.data.entity.getId（）.replace（"{",""）.replace（"}",""）;entityName = Xrm.Page.data.entity.getEntityName（） + "Set";previousModificationDateOnLoad = new Date（）;retrieveRecord（recordId,entityName, function（data）{previousModificationDateOnLoad = data.ModifiedOn;previousModificationDateOnLoad = new Date（parseInt（//Date（（d+）.*/.exec（previousModificationDateOnLoad）[1]））;},null, false）;//alert（previousModificationDateOnLoad）;}function validateConcurrency（ExecutionObj）{if（Xrm.Page.ui.getFormType（）==1）{return;}var previousModificationDateOnSave, previousModifiedByOnSave;retrieveRecord（recordId,entityName, function（data）{previousModificationDateOnSave = data.ModifiedOn;//alert（previousModificationDateOnSave）;previousModifiedByOnSave = data.ModifiedBy.Name;//alert（previousModifiedByOnSave）;//change timestamp to date formatpreviousModificationDateOnSave= new Date（parseInt（//Date（（d+）.*/.exec（previousModificationDateOnSave）[1]））;//alert（previousModificationDateOnLoad + "
"+previousModificationDateOnSave）if（previousModificationDateOnLoad < previousModificationDateOnSave）{var continueSave = confirm（"The record was recently modified by "+previousModifiedByOnSave+ " On " +previousModificationDateOnSave + ".If you chose to save this record you will overwrite the recent changes made by "+previousModifiedByOnSave+"
Are you sure you want to save this record？"）;if（！continueSave）{ExecutionObj.getEventArgs（）.preventDefault（）;event.returnValue = false;} }//previousModificationDateOnLoad = previousModificationDateOnSave;},null, false）;}function retrieveRecord（id, odataSetName,successCallback, errorCallback, aSync）{if（aSync==null || aSync==undefined）{aSync = true;}//alert（serverUrl +ODATA_ENDPOINT +"/"+odataSetName+"（guid""+id+""）"）;$.ajax（{type:"GET",contentType:"application/json;charset=utf-8",datatype:"json",async:aSync,url:serverUrl +ODATA_ENDPOINT +"/"+odataSetName+"（guid""+id+""）",beforeSend:function（XMLHttpRequest）{XMLHttpRequest.setRequestHeader（"Accept","application/json"）;},success:function（data,textStatus,XmlHttpRequest）{if（successCallback）{successCallback（data.d,textStatus,XmlHttpRequest）;}},error:function（XmlHttpRequest,textStatus,errorThrown）{alert（"error"）;if（errorCallback）{errorCallback（XmlHttpRequest,textStatus,errorThrown）;}}}）;}