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What are some use cases for using the Schema class in Salesforce?
What are some use cases for using the Schema class in Salesforce?
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3 Replies
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hello Avnish
by Schema class you can retrieve data from server without SOQL query
for eg- get recordTypeId without soql query
Id contRecordTypeId = Schema.SObjectType.Contact.getRecordTypeInfosByName().get('NameOfRecordType').getRecordTypeId();
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Hi,
Here is the code which gives best use case of schema for getting fields -
public Void GetAllField()
{
String query ='';
String SobjectApiName = 'Account';
Map<String, Schema.SObjectType> schemaMap = Schema.getGlobalDescribe();
Map<String, Schema.SObjectField> fieldMap = schemaMap.get(SobjectApiName).getDescribe().fields.getMap();String strFields = '';
for(String fieldName : fieldMap.keyset() )
{
if(strFields == null || strFields == '')
{
strFields = fieldName;
}else{
strFields = strFields + ' , ' + fieldName;
}
}query = 'select ' + strFields + ' from ' + SobjectApiName + ' Limit 10 ';
List <Account> accList = Database.query(query);
}
Hope this helps.
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Contains methods for obtaining schema describe information. Schema Is data about data. SObjectType is used to check the object type. Pleas try below code it will give you list of object in your org
For ex:Map <String, Schema.SObjectType> schemaMap = Schema.getGlobalDescribe();
List<String> entities = new List<String>(schemaMap.keySet());
For(String name : entities)
{
System.debug('----->'+name);
}Thanks
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