NameService

【文件属性】：
文件名称：NameService
文件大小：530KB
文件格式：PDF
更新时间：2011-01-01 15:39:22
association name-to-object A name-to-object association is called a name binding. A name binding is always defined relative to a naming context. A naming context is an object that contains a set of name bindings in which each name is unique. Different names can be bound to an object in the same or different contexts at the same time. There is no requirement, however, that all objects must be named.
To resolve a name is to determine the object associated with the name in a given context. To bind a name is to create a name binding in a given context. A name is always resolved relative to a context — there are no absolute names.
Because a context is like any other object, it can also be bound to a name in a naming context. Binding contexts in other contexts creates a naming graph — a directed graph with nodes and labeled edges where the nodes are contexts. A naming graph allows more complex names to reference an object. Given a context in a naming graph, a sequence of names can reference an object. This sequence of names (called a compound name) defines a path in the naming graph to navigate the resolution process.