Salesforce | How to create Single Dynamic Batch Class to update multiple Sobjects in Salesforce

Suppose you want to update field name ‘Status’ to ‘Active’ in multiple Sobject and there are large number of records for each Sobject. Instead of writing a batch class for each Sobject you can update multiple Sobjects like this.

Declare three variables, one for SOQL, one for field name which you want to update and one for new value of field.

Here is sample code:

String qry = 'SELECT  Status__c  FROM  XYZ';
String field = 'Status';
String val =’Active’;

Database.executeBatch(new UpdateObjectBatchClass(qry,field,val),200);

global class UpdateObjectBatchClass  implements Database.Batchable ,Database.stateful
{
global final String Query;
global final String Field;
global  String Value;

public UpdateObjectBatchClass(String qry, String f,Sting val)
{
      Query = qry ;
      Field = f;
      Value = val;
}

public Database.QueryLocator start(Database.BatchableContext BC)
{
return Database.getQueryLocator(Query);
}

 public void execute(Database.BatchableContext BC, List scope)
 {
        for(sObject Src : scope){
               Src.put(Field,Value);
 }
        update scope;
 }

 public void finish(Database.BatchableContext BC)
 {
 }
 }

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