ScopeVisitor is used to implement the Visitor
pattern in GDATAServer. An object of this interface can be passed to a
ScopeVistable which will then call its methods.
{@link org.apache.lucene.gdata.server.registry.Component} Classes registered
in the {@link org.apache.lucene.gdata.server.registry.GDataServerRegistry}
will be added to the Visitableimplementation automatically. Please refer to
the Gang of Four book of Design Patterns for more details on the
Visitor pattern.
A scope can be Session, Request or Context if one of the ScopeVisitors for
the desired scope is available by the registry.
This site
has further discussion on design patterns and links to the GOF book. This link describes the
Visitor pattern in detail.
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