Most of the Change Sets domain classes and interfaces are located in the core library (com.elasticpath.core) in the com.elasticpath.domain.changeset and com.elasticpath.domain.objectgroup packages.

• ChangeSet: a collection of business objects
• ChangeSetMember: defines the mapping of a business object to a Change Set
• ChangeSetStateCode: an enum that defines the possible states of a Change Set (open, finalized, or locked)
• ChangeSetUser: defines the mapping of a user to a Change Set that he/she has permissions to manipulate
• BusinessObjectDescriptor: describes a business object that can be added to a Chanage Set
• BusinessObjectGroupMember: describes a business object that is included to a Chanage Set (similar to BusinessObjectDescriptor, but includes a group identifier)
• BusinessObjectMetaData: a map containing information about a business object that can be used by external tools, such as the Overview.

The following services (defined in com.elasticpath.service.changeset) are used to manipulate Change Sets:

• ChangeSetManagementService : used to add, remove, and move Change Sets, as well as to update the state of Change Sets
• ChangeSetService : used to add, remove, and move Change Set members
• ChangeSetPolicy : an object that defines the rules governing the state of Change Set objects

Change Set service beans are defined in WEB-INF/conf/spring/service/service.xml.