Can I create a list of sobjects in a for loop where the name of the list will be dynamic?

Question

I want to create lists of sobject where sobject types will be input from a custom label or a custom metadata.

Can I create a list of sobjects in a for loop where the name of the list will be dynamic?

something like this -

for(Integer i=0; i<somesize; i++) {
List<SObject> listName*i* = new List<SObject>();
}

Answer 1

The type List<SObject> can hold records for any type of SObject. So the following would work, for example:

List<SObject> records = new List<SObject>();
records.add(new Account());

So you don't need to do much to support dynamically typed lists. Unless, that is, you are trying to upsert them. Then you need to use Type.forName as I outlined here.

String listType = 'List<' + sObjectType + '>';
List<SObject> castRecords = (List<SObject>)Type.forName(listType).newInstance();

But this type of casting should not be necessary for any other use case.

Answer 2

I just responded on your previous post.

Yes, you can use the Schema class. SObject itself is dynamic.

List<SObject> records = new List<Sobject>();
Map<String,Schema.SObjectType> gd = Schema.getGlobalDescribe(); 
for(Integer i=0; i<somesize; i++) {
    records.add(gd.get('ObjectNameFromLabel').newSObject());
}

If you want to split it then you can use the instance of and use Map<String, List<SObject>> where key is the API name of object.