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filters.py
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filters.py
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from common import fail
from common import checkElementAttribute
class EqualityFilter:
# for equality
def __init__(self, values, dimension):
self.values = values
self.dimension = dimension
self.dimensionTable = dimension.table
self.dimensionField = dimension.field
def getElement(self, document):
fElement = document.createElement("filter")
fElement.setAttribute("dimension", self.dimension.name)
fElement.setAttribute("type", "equality")
for value in self.values:
valueElement = document.createElement("equal")
valueElement.setAttribute("value", value)
fElement.appendChild(valueElement)
return fElement
def generateQueryString(self):
res = " and (1=2"
for value in self.values:
res += " or " + self.dimensionTable + "." + self.dimensionField + "=" + '"' + value + '"'
res += ")"
return res
class InequalityFilter:
def __init__(self, dimension, kwargs):
self.values = kwargs
if not self.values.has_key('from') and not self.values.has_key('to'):
fail("Bad inequality filter")
self.dimension = dimension
self.dimensionTable = dimension.table
self.dimensionField = dimension.field
def getElement(self, document):
fElement = document.createElement("filter")
fElement.setAttribute("dimension", self.dimension.name)
fElement.setAttribute("type", "inequality")
if self.values.has_key("from"):
fElement.setAttribute("from", self.values["from"])
if self.values.has_key("to"):
fElement.setAttribute("to", self.values["to"])
return fElement
def generateQueryString(self):
res = " and (1=1"
if self.values.has_key('from'):
res += " and " + self.dimensionTable + "." + self.dimensionField + ">=" + '"' + self.values['from'] + '"'
if self.values.has_key('to'):
res += " and " + self.dimensionTable + "." + self.dimensionField + "<=" + '"' + self.values['to'] + '"'
res += ")"
return res