Description:
For more record DML operations and we can implement the batch class. Here is the example of how to clone the previous year record for the parent record with child and grandchild using batch class.
Example Apex Code:
Clone Records Using Batch Apex Class
global class CloneRecordsBatch implements Database.Batchable<sObject> {
global list<Parent_Object_Name__c> start(Database.BatchableContext context) {
String ParentRecordName = label.Clone;// which name you want
integer RecordYear = Date.Today().Year()-1;
List<Parent_Object_Name__c> clonesToInsert = Database.query(‘SELECT ‘ + String.join(new List<String>(Schema.getGlobalDescribe().get(‘Parent_Object_Name__c’).getDescribe().fields.getMap().keySet()), ‘,’) + ‘ FROM Parent_Object_Name__c where Parent_Object_Name__c =: ParentRecordName and CALENDAR_YEAR(CreatedDate) =: RecordYear’);
return clonesToInsert;
}
global void execute(Database.BatchableContext context, List<Parent_Object_Name__c> records) {
try
{
List<Parent_Object_Name__c> clonesToInsert = new List<Parent_Object_Name__c>();
List<string> SampleSetName = new List<string>();
list<id> SampleSetid = new list<id>();
list<string> SampleName = new list<string>();
for (Parent_Object_Name__c record : records) {
SampleSetName.add(record.id);
Parent_Object_Name__c SamSet = record.clone(false, false, false, false);
clonesToInsert.add(SamSet);
}
if (clonesToInsert.size() > 0) {
insert clonesToInsert;
}
for(Parent_Object_Name__c record: clonesToInsert)
{
SampleSetid.add(record.Id);
}
Map<id,list<Child_Object_Name__c>> sampleWithSampleSetMap = new Map<id,list<Child_Object_Name__c>>();
list<Child_Object_Name__c> SampleListToInsert = new list<Child_Object_Name__c>();
list<Child_Object_Name__c> SampleList = Database.query(‘SELECT ‘ + String.join(new List<String>(Schema.getGlobalDescribe().get(‘Child_Object_Name__c’).getDescribe().fields.getMap().keySet()), ‘,’) + ‘ FROM Child_Object_Name__c where Sample_Set__r.id IN: SampleSetName’);
if(SampleList.size() > 0)
{
for(Child_Object_Name__c Smp : SampleList)
{
if(!sampleWithSampleSetMap.containsKey(Smp.Parent_Object_Name__c))
{
sampleWithSampleSetMap.put(Smp.Parent_Object_Name__c,new list<Child_Object_Name__c>{Smp}); // Get Sample With Old Sample Set Id
}
else
sampleWithSampleSetMap.get(Smp.Parent_Object_Name__c).add(Smp);
}
}
for(id Ssetid : sampleWithSampleSetMap.keyset())
{
for(Child_Object_Name__c record : sampleWithSampleSetMap.get(Ssetid))
{
SampleName.add(record.Id);
if(SampleSetid.size() > 0)
{
record.Parent_Object_Name__c = SampleSetid[0];
}
Child_Object_Name__c Sam = record.clone(false, false, false, false);
SampleListToInsert.add(Sam);
}
if(SampleSetid.size() > 0)
SampleSetid.remove(0);
}
list<id> sampleid = new list<id>();
if(SampleListToInsert.size() > 0)
{
insert SampleListToInsert;
}
for(Child_Object_Name__c record : SampleListToInsert)
{
sampleid.add(record.Id);
}
Map<id,list<GrandChild_Object_Name__c>> TestMap = new Map<id,list<GrandChild_Object_Name__c>>();
list<GrandChild_Object_Name__c> TestToInsert = new list<GrandChild_Object_Name__c>();
list<GrandChild_Object_Name__c> TestList = Database.query(‘SELECT ‘ + String.join(new List<String>(Schema.getGlobalDescribe().get(‘GrandChild_Object_Name__c’).getDescribe().fields.getMap().keySet()), ‘,’) + ‘ FROM GrandChild_Object_Name__c where Child_Object_Name__c IN:SampleName’);
if(TestList.size() > 0)
{
for(GrandChild_Object_Name__c record : TestList)
{
if(!TestMap.containskey(record.Child_Object_Name__c))
{
TestMap.put(record.Child_Object_Name__c,new list<GrandChild_Object_Name__c>{record});
}
else
TestMap.get(record.Child_Object_Name__c).add(record);
}
}
for(id samid : TestMap.keyset())
{
for(GrandChild_Object_Name__c record : TestMap.get(samid))
{
if(sampleid.size() > 0)
{
record.Child_Object_Name__c = sampleid[0];
}
GrandChild_Object_Name__c Sam = record.clone(false, false, false, false);
TestToInsert.add(Sam);
}
if(sampleid.size() > 0)
sampleid.remove(0);
}
if(TestToInsert.size() > 0)
{
insert TestToInsert;
}
}
catch(Exception e)
{
system.debug(‘Exception raised due to —->’+e);
}
}
global void finish(Database.BatchableContext context) {
}
}
Here, the example Clone Records Using Batch Apex Schedule Class
For using the scheduled apex, you can schedule the below class for the every year starting.
public class CloneRecordBatchSchedule implements Schedulable{
public void execute (SchedulableContext sc)
{
CloneRecordsBatch crb = new CloneRecordsBatch();
Database.executeBatch(crb);
}
}
Conclusion:
By implementing this functionality, we can easily manage our data in Salesforce.
Related Link : https://merfantz.com/blog/part-iv-7-batch-class-creation-in-salesforce/
Write a test class for batch class in Salesforce
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