Package lemon :: Package external :: Package gadfly :: Module semantics :: Class BoundExpression
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Class BoundExpression

SimpleRecursive --+
                  |
                 BoundExpression

Known Subclasses:
BoundAddition, BoundAttribute, BoundDivision, BoundMinus, BoundMultiplication, BoundSubtraction, Constant

superclass for all bound expressions.
except where overloaded expressions are binary
with self.left and self.right

Method Summary
  __init__(self, left, right)
  __add__(self, other)
  __coerce__(self, other)
  __div__(self, other)
  __mul__(self, other)
  __neg__(self)
  __repr__(self)
  __sub__(self, other)
  attribute(self)
  domain(self)
  equate(self, other)
return predicate equating self and other.
  initargs(self)
  le(self, other)
predicate self<=other...
  lt(self, other)
predicate self<other...
  relbind(self, dict, db)
  uncache(self)
prepare for execution, clear cached data.
    Inherited from SimpleRecursive
  demarshal(self, args)
  marshaldata(self)

Class Variable Summary
int contains_aggregate = 0                                                                     

Method Details

equate(self, other)

return predicate equating self and other.
Overload for special cases, please!

le(self, other)

predicate self<=other

lt(self, other)

predicate self<other

uncache(self)

prepare for execution, clear cached data.

Class Variable Details

contains_aggregate

Type:
int
Value:
0                                                                     

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