Selective locking of business object data structures

A non-transitory computer program product storing instructions which, when executed by at least one data processor, result in operations comprising:

• initiating, on behalf of each of a plurality of users during an interaction phase, a respective transaction associated with at least one business object, each business object comprising a plurality of hierarchically related nodes storing values, each transaction being initiated via a service interface of the at least one business object and comprising a set of operations that are required to be executed together, at least one of the operations requiring modification of the at least one business object;
• assigning, upon modification of at least one node of the at least one business object, an optimistic lock to the business object to each user during pendency of the corresponding transaction;
• assigning an exclusive lock to the at least one business object to a first user that first completes the interaction phase;
• and
• preventing users other than the first user from obtaining an exclusive lock to the at least one business object in response to the exclusive lock being assigned.

A system comprising:

• at least one data processor;
• and
• memory storing instructions which, when executed by the at least one data processor, result in operations comprising:
• initiating, on behalf of each of a plurality of users during an interaction phase, a respective transaction associated with at least one business object, each business object comprising a plurality of hierarchically related nodes storing values, each transaction being initiated via a service interface of the at least one business object and comprising a set of operations that are required to be executed together, at least one of the operations requiring modification of the at least one business object;
• assigning, upon modification of at least one node of the at least one business object, an optimistic lock to the business object to each user during pendency of the corresponding transaction;
• assigning an exclusive lock to the at least one business object to a first user that first completes the interaction phase;
• and
• preventing users other than the first user from obtaining an exclusive lock to the at least one business object in response to the exclusive lock being assigned.