Object graph partial immutability and isolation enforcement

A method for instantiating an object graph representing an instance of a particular type that has structured permissions, the method comprising:

• an act of assigning a first permission to a first permission partition of the object graph so that the first permission is enforced on access requests for objects within the first permission partition;
• and
• an act of assigning a second permission to a second permission partition of the object graph so that the second permission is enforced on access requests for objects within the second permission partition, wherein the second permission may be different than the first permission.

A system for instantiating an object graph representing an instance of a particular type that has structured permissions, the system comprising:

• a type definition access component that accesses a type definition of a particular type, the type definition specifying a first permission partition within the type and a second permission partition within the type, such that a permission assigned to the first permission partition may be different than a permission assigned to the second permission partition;
• and
• an instantiation component configured to generate an object graph of the particular type using the type definition, and in the process assign a first permission to the first permission partition of the object graph, and assign a second permission to the second permission partition of the object graph, wherein the second permission is different than the first permission.