Accessing All sObjects

Use the Schema getGlobalDescribe method to return a map that represents the relationship between all sObject names (keys) to sObject tokens (values). For example:

Map<String, Schema.SObjectType> gd = Schema.getGlobalDescribe();

The map has the following characteristics:

• It is dynamic, that is, it is generated at runtime on the sObjects currently available for the organization, based on permissions.
• The sObject names are case insensitive.
• The keys are prefixed with the namespace, if any.^*
• The keys reflect whether the sObject is a custom object.

^* Starting with Apex saved using Salesforce API version 28.0, the keys in the map that getGlobalDescribe returns are always prefixed with the namespace, if any, of the code in which it is running. For example, if the code block that makes the getGlobalDescribe call is in namespace NS1, and a custom object named MyObject__c is in the same namespace, the key returned is NS1__MyObject__c. For Apex saved using earlier API versions, the key contains the namespace only if the namespace of the code block and the namespace of the sObject are different. For example, if the code block that generates the map is in namespace N1, and an sObject is also in N1, the key in the map is represented as MyObject__c. However, if the code block is in namespace N1, and the sObject is in namespace N2, the key is N2__MyObject__c.

Standard sObjects have no namespace prefix.