Viewing file:  SolutionModifier.py (1.19 KB) -rw-r--r--
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ASCENDING_ORDER = 1
DESCENDING_ORDER = 2
UNSPECIFIED_ORDER = 3
ORDER_VALUE_MAPPING = {
ASCENDING_ORDER : 'Ascending',
DESCENDING_ORDER : 'Descending',
UNSPECIFIED_ORDER : 'Default',
}
class SolutionModifier(object):
def __init__(self,orderClause=None,limitClause=None,offsetClause=None):
self.orderClause = orderClause
self.limitClause = limitClause
self.offsetClause = offsetClause
def __repr__(self):
if not(self.orderClause or self.limitClause or self.offsetClause):
return ""
return "<SoutionModifier:%s%s%s>"%(
self.orderClause and ' ORDER BY %s'%self.orderClause or '',
self.limitClause and ' LIMIT %s'%self.limitClause or '',
self.offsetClause and ' OFFSET %s'%self.offsetClause or '')
class ParsedOrderConditionExpression(object):
"""
A list of OrderConditions
OrderCondition ::= (('ASC'|'DESC')BrackettedExpression )|(FunctionCall|Var|BrackettedExpression)
"""
def __init__(self,expression,order):
self.expression = expression
self.order = order
def __repr__(self):
return "%s(%s)"%(ORDER_VALUE_MAPPING[self.order],self.expression.reduce())
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