ercatoJ anatomy
 ercatoJ
uses bright ideas from several ancestors.
It uses XML to represent and persist rich
structures, XSLT may express business logic and views.
It uses SQL as an accelerator for unsacrificed
performance. Even inner and outer joins are available. However,
SQL as a language is considered deprecated.
It uses and complements J2EE, e.g., transactions,
sessions, authentication.
It uses an extended Unix file system semantics
(incl. x- and s-bits) to express rôle-based permissions
by instance, not by class. As a consequence, protection ensures
that two different rôles may see different data from
the same SQL query.
It uses Java and its object-oriented model.
Business logic may be expressed in arbitrary Java.
It uses the Unix philosophy of many small
building blocks which cooperate towards a whole which is more
than the sum of its parts. ercatons are the parts, the J2EE
application is the whole. The concept of several users conributing
parts in a secure manner is implemented, too.
It uses the concept of prototype-based languages
such as ‘Self’ where objects are created without
a class.
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