initial

lib/Components/ExtensionClass/test/AqAlg.py

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+##############################################################################
+__doc__='''Examples from the Acquisition Algebra Presentation
+
+
+$Id: AqAlg.py,v 1.1 2000/05/17 13:57:51 jim Exp $'''
+__version__='$Revision: 1.1 $'[11:-2]
+
+
+import Acquisition
+
+class I(Acquisition.Implicit):
+
+    def __init__(self, name):
+        self.__name__=name
+
+    def __str__(self):
+        context=getattr(self, 'aq_parent', None)
+        if context is None: return self.__name__
+        return "(%s of %s)" % (self.aq_self, context)
+
+    __repr__=__str__
+
+A=I('A')
+A.B=I('B')
+A.B.color='red'
+A.C=I('C')
+A.C.D=I('D')
+
+def show(s):
+    print s, '-->', eval(s)
+
+def main():
+    show('A')
+    show('Acquisition.aq_chain(A)')
+    show('Acquisition.aq_chain(A, 1)')
+    show('map(Acquisition.aq_base, Acquisition.aq_chain(A, 1))')
+    print
+
+    show('A.C')
+    show('Acquisition.aq_chain(A.C)')
+    show('Acquisition.aq_chain(A.C, 1)')
+    show('map(Acquisition.aq_base, Acquisition.aq_chain(A.C, 1))')
+    print
+
+    show('A.C.D')
+    show('Acquisition.aq_chain(A.C.D)')
+    show('Acquisition.aq_chain(A.C.D, 1)')
+    show('map(Acquisition.aq_base, Acquisition.aq_chain(A.C.D, 1))')
+    print
+
+    show('A.B.C')
+    show('Acquisition.aq_chain(A.B.C)')
+    show('Acquisition.aq_chain(A.B.C, 1)')
+    show('map(Acquisition.aq_base, Acquisition.aq_chain(A.B.C, 1))')
+    print
+
+    show('A.B.C.D')
+    show('Acquisition.aq_chain(A.B.C.D)')
+    show('Acquisition.aq_chain(A.B.C.D, 1)')
+    show('map(Acquisition.aq_base, Acquisition.aq_chain(A.B.C.D, 1))')
+    print
+
+    show('A.B.C.D.color')
+    show('Acquisition.aq_get(A.B.C.D, "color", None)')
+    show('Acquisition.aq_get(A.B.C.D, "color", None, 1)')
+
+
+if __name__=='__main__':
+    main()
+