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Topics#Data ManagementHari prasath's Question
Hari prasath (Mindtree) asked in #Data Management
May 2, 2019, 9:35 AM

Can we retrieve the size of a custom field in Apex and store it in a Integer value.

For e.g.

 

I have a custom object named CustomObj__c and that has a custom field named CustomField__c which is a Long Text Area(32768)

 

The size is 32768.

 

Can I retrieve this value in Apex and store it in an Integer variable?
4 answers
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  1. Nilesh Sherla (Barclays Channels Salesforce B2C)
    May 27, 2020, 11:14 AM

    Hi Hari,

    • To get the field length for Text,LongText,Picklist,TextArea and ID Data Type, we can use
    Map <String, Schema.SObjectType> schemaMap = Schema.getGlobalDescribe();
    Map <String, Schema.SObjectField> fieldMap = schemaMap.get('ObjectName').getDescribe().fields.getMap();
    for(Schema.SObjectField sfield : fieldMap.Values())
    {
        schema.describefieldresult dfield = sfield.getDescribe();
        // For Text,LongText,Picklist,TextArea and ID Data Type
        system.debug(dfield.getType()+':'+dfield.getLength());
    }
    }
    • To get the field lenght for Decimal or Currency Data Type, we can use
    Map <String, Schema.SObjectType> schemaMap = Schema.getGlobalDescribe();
    Map <String, Schema.SObjectField> fieldMap = schemaMap.get('ObjectName').getDescribe().fields.getMap();
    for(Schema.SObjectField sfield : fieldMap.Values())
    {
        schema.describefieldresult dfield = sfield.getDescribe();
        // For Decimal and Currency Data Type
        system.debug(dfield.getType()+':'+dfield.getPrecision());
    }
    }

     

     
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