i have a batch class
public class BatchCreateGCalendars implements Database.Batchable<SObject>, Database.Stateful, Database.AllowsCallouts { private String query; private String pageToken ; private String accessToken; private String CalendarId; public BatchCreateGCalendars(){ this.query = 'Select Id, Name, CalendarId__c from CalendarSettings__c'; // Query to get the CalendardID (Google ID) } public Database.Querylocator start(Database.BatchableContext BC){ return Database.getQueryLocator(query); } public void execute(Database.BatchableContext BC, List<sObject> scope){ GoogleForce__c gApp = GoogleForce__c.getAll().values()[0]; GCalendarUtil.Calendar cal = new GCalendarUtil.Calendar(); GCalendarUtil.GResponse gResp = new GCalendarUtil.GResponse(); String endPoint = GCalendarUtil.CALENDAR_BASE + GCalendarUtil.CAL_URL; // Calendar Endpoint // Iterate over the records, delete each calendar and create the calendar again. for(CalendarSettings__c c : (List<CalendarSettings__c>)scope){ String delEndpoint = endpoint + '/' + c.CalendarId__c; if(gApp.ExpiresIn__c < system.now()){ gResp = GCalendarUtil.getNewToken(gApp); accessToken = gResp.access_token; gApp.AccessToken__c = gResp.access_token; gApp.ExpiresIn__c = System.now().addSeconds(gResp.expires_in); }else{ accessToken = gApp.AccessToken__c; System.debug('Calendar Id is '+ c.CalendarId__c); } String re= GCalendarUtil.doApiCall(null,'GET','https://www.googleapis.com/calendar/v3/calendars/'+c.CalendarId__c+'/events',accessToken); re = re.replaceAll('"end":','"end1":'); re = re.replaceAll('"dateTime":','"dateTime1":'); System.debug('response is' +re); JSON2Apex1 aa = JSON2Apex1.parse(re); List<JSON2Apex1.Items> ii = aa.items ; System.debug('next token is'+ aa.nextPageToken); List<String> event_id =new List<String>(); if(ii!= null){ for(JSON2Apex1.Items i: ii){ event_id.add(i.id); } } for(String s:event_id) {GCalendarUtil.doApiCall(null,'DELETE','https://www.googleapis.com/calendar/v3/calendars/'+c.CalendarId__c+'/events/'+s,accessToken); } pageToken = aa.nextPageToken; CalendarId=c.CalendarId__c; if(pageToken!=null) deleteEvents(accessToken , pageToken,c.CalendarId__c); } update gApp; } /* After the batch job is finished, trigger the other batch jobs where the Campaigns are sent as Events to the calendars. Use the CalendarQuery field on the each calendarSettings record. */ public void finish(Database.BatchableContext BC){ BatchDeleteEvents bjob1 = new BatchDeleteEvents(CalendarId,accessToken); Database.executeBatch(bjob1,9); for(CalendarSettings__c c : [Select Id, Name, CalendarQuery__c, CalendarId__c,FieldToDisplay__c from CalendarSettings__c WHERE Name IN ('Public Calendar', 'Internal marketing Calendar')]){ BatchPublicCampaignsToGoogle bjob = new BatchPublicCampaignsToGoogle(c.CalendarQuery__c,c.CalendarId__c,c.FieldToDisplay__c); Database.executeBatch(bjob,9); // This is set to process 9 records, allowing 1 extra callout for refresh token in case needed. } } public static void deleteEvents(String accessToken,String pageToken,String CalendarId){ List<Event__c> event_id =new List<Event__c>(); while(pageToken != null) { String re = GCalendarUtil.doApiCall(null,'GET','https://www.googleapis.com/calendar/v3/calendars/'+CalendarId+'/events?pageToken='+pageToken,accessToken); System.debug('next page response is'+ re); re = re.replaceAll('"end":','"end1":'); re = re.replaceAll('"dateTime":','"dateTime1":'); JSON2Apex1 aa = JSON2Apex1.parse(re); List<JSON2Apex1.Items> ii = aa.items ; System.debug('size of ii'+ii.size()); pageToken = aa.nextPageToken ; if(ii!= null){ for(JSON2Apex1.Items i: ii){ event_id.add(new Event__c(name = i.id)); } } } insert event_id; } } in this code i am getting error at this line
String re= GCalendarUtil.doApiCall(null,'GET','https://www.googleapis.com/calendar/v3/calendars/'+c.CalendarId__c+'/events',accessToken); error is
You have uncommitted work pending. Please commit or rollback before calling out why i am facing this error please help and one more doubt is when i call this code in finish method
BatchDeleteEvents bjob1 = new BatchDeleteEvents(CalendarId,accessToken); Database.executeBatch(bjob1,9); it will execute this code synchronously na means all objects in batch of 9 processed and then control will come on this code
BatchPublicCampaignsToGoogle bjob = new BatchPublicCampaignsToGoogle(c.CalendarQuery__c,c.CalendarId__c,c.FieldToDisplay__c); Database.executeBatch(bjob,9);