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, 22:49, 24 June 2011
==Introduction==
The functionality of a XQuery processor can be extended with a variety of libraries. This, however, becomes often a difficult task as there is no common defined installation process and different libraries comply with different rules. EXPath addresses this problem by creating a generic mechanism for extending a XQuery processor with packages. BaseX offers an implementation of this mechanism based on the [http://expath.org/spec/pkg specification] created by EXPath.
==What is a package?==
A package is a .xar archive encapsulating one or more extension libraries. The implemntation of BaseX currently supports extension with XQuery libraries and java libraries packed as .jar files.
===Structure===