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'''
Created on Feb 21, 2012
@author: steger
'''
from Semantics.Query import QueryBundle, SingleQuery, SingleSampleQuery,\
SingleConditionQuery
from Resource.node import node
from Resource.interface import interface
from DataProcessing.Aggregator import Max, Min, Percentile, Mean, Deviation
from DataProcessing.Sampler import Tail, Head
from DataProcessing.Parameter import ParameterList
from DataProcessing.Bool import IsPositive, IsNegative
class QueryInterpreter(object):
'''
classdocs
'''
samplesource = 'UnmodifiedExtractOfFeatureSamples'
lut_skeleton = {
'Maximum': Max,
'Minimum': Min,
'Percentile': Percentile,
'Average': Mean,
'Variance': Deviation,
'Tail': Tail,
'Head': Head
}
lut_condition = {
'IsPositive': IsPositive,
'IsNegative': IsNegative,
#FIXME: IsNotNegative, IsNotPositive
'AndExpression': '',
'OrExpression': '',
}
def __init__(self, model):
'''
@summary: constructor
@param model: the task model to resolve the tools
@type model: TaskModel
'''
self.model = model
def getUnitOfDimension(self, ref_dim):
return self.model.dm[ref_dim].unit
def getUnit(self, uri_prefix, uri_unit):
if uri_prefix is None:
uref = self.model._tail(uri_unit)
else:
uref = "%s_%s" % (self.model._tail(uri_prefix), self.model._tail(uri_unit))
return self.um[uref]
@property
def myns(self):
return self.model.ontology.ns_dict
def inferInterfacesOf(self, qgraph, uri_node):
q = """
SELECT ?ifin ?address ?unit ?prefix
WHERE {
<%s> core:hasInboundInterface ?ifin ;
core:hasOutboundInterface ?ifout .
?ifin a core:Interface ;
core:hasIPv4Address ?addressobj .
?ifout a core:Interface ;
core:hasIPv4Address ?addressobj .
?addressobj a owl:NamedIndividual ;
a unit:IPAddress ;
unit:hasValue ?address .
OPTIONAL {
?addressobj unit:hasUnit ?unit .
}
OPTIONAL {
?addressobj unit:hasPrefix ?prefix .
}
}
""" % uri_node
for uri_ifin, address, uri_unit, uri_prefix in qgraph.query(q, initNs = self.myns):
name = self.model.ontology._tail(uri_ifin)
iface = interface(name, resourceid = uri_ifin)
if uri_unit is not None:
iface.address = str(address), self.getUnit(uri_prefix, uri_unit)
else:
iface.address = str(address), self.getUnitOfDimension('IPAddress')
iface.direction = iface.EGRESS | iface.INGRESS
#FIXME: this info should come from the model
iface.interface = "eth0"
iface.ispublic = True
yield iface
#TODO: similarly look up uni directional interfaces of the node and yield them as well
def inferBundleQueries(self, qgraph):
'''
@summary:
'''
q = """
SELECT ?query ?resource ?feature ?sample ?formatter
WHERE {
?query a owl:NamedIndividual ;
a query:BundleQuery ;
feature:hasFeature ?feature ;
stat:hasSample ?sample ;
query:hasResource ?resource ;
query:hasFormatter ?formatter .
}
"""
Q = QueryBundle()
for uri_query, uri_resource, uri_feature, uri_sample, uri_formatter in qgraph.query(q, initNs = self.myns):
r = Q.getResource(uri_resource)
if r is None:
r = self.translateResource(qgraph, uri_resource)
sq = SingleQuery()
sq.feature = uri_feature
sq.resource = (uri_resource, r)
sq.formatter = uri_formatter
sq.samplechain = self.inferSampleChain(qgraph, uri_sample)
for p in self.inferParameters(qgraph, uri_query):
sq.addParameter(parameter = p)
Q.add(uri_query, sq)
return Q
def inferSampleManipulationQueries(self, qgraph):
'''
@summary:
'''
q = """
SELECT ?query ?resource ?feature ?sourceid ?sample ?formatter
WHERE {
?query a owl:NamedIndividual ;
a query:SampleManipulationQuery ;
query:hasResource ?resource ;
feature:hasFeature ?feature ;
query:hasProcessid ?sourceid ;
stat:hasSample ?sample ;
query:hasFormatter ?formatter .
}
"""
Q = QueryBundle()
for uri_query, uri_resource, uri_feature, uri_sourceid, uri_sample, uri_formatter in qgraph.query(q, initNs = self.myns):
r = Q.getResource(uri_resource)
if r is None:
r = self.translateResource(qgraph, uri_resource)
aq = SingleSampleQuery()
aq.feature = uri_feature
aq.resource = (uri_resource, r)
aq.formatter = uri_formatter
aq.samplechain = self.inferSampleChain(qgraph, uri_sample)
aq.sourceid = str(uri_sourceid)
Q.add(uri_query, aq)
return Q
def inferConditionQueries(self, qgraph):
'''
@summary:
'''
q = """
SELECT ?query ?resource ?sourceid ?feature ?cond
WHERE {
?query a owl:NamedIndividual ;
a query:ConditionQuery ;
query:hasResource ?resource ;
query:hasProcessid ?sourceid ;
feature:hasFeature ?feature ;
stat:hasCondition ?cond ;
}
"""
Q = QueryBundle()
for uri_query, uri_resource, uri_sourceid, uri_feature, uri_cond in qgraph.query(q, initNs = self.myns):
r = Q.getResource(uri_resource)
if r is None:
r = self.translateResource(qgraph, uri_resource)
C, op = self.inferCondition(qgraph, uri_cond)
print uri_query, uri_resource, uri_sourceid, uri_cond
cq = SingleConditionQuery()
cq.feature = uri_feature
cq.resource = (uri_resource, r)
cq.operation = op
cq.conditiontype = C
cq.sourceid = str(uri_sourceid)
Q.add(uri_query, cq)
return Q
def inferCondition(self, qgraph, uri_cond):
q = """
SELECT ?what ?sample
WHERE {
<%s> a owl:NamedIndividual ;
a ?what ;
stat:hasSample ?sample ;
}
""" % uri_cond
for what, uri_sample in qgraph.query(q, initNs = self.myns):
tail = self.model.ontology._tail(what)
if tail in [ 'NamedIndividual' ]:
continue
C = self.lut_condition[tail]
if C in [IsPositive, IsNegative]: #FIXME: IsNotNegative, IsNotPositive
return C, self.inferLineraCombinedSample(qgraph, uri_sample)
else:
print "BALHE"
raise Exception("QI NOT IMPLMENTED")
def inferLineraCombinedSample(self, qgraph, uri_sample):
q = """
SELECT ?sample ?factor
WHERE {
<%s> a owl:NamedIndividual ;
a stat:LinearCombinedSample ;
stat:hasTerm ?term .
?term stat:hasSample ?sample .
OPTIONAL {
?term stat:hasScale ?factor .
}
}
""" % uri_sample
terms = []
for uri_sample, factor in qgraph.query(q, initNs = self.myns):
try:
factor = float(factor)
except:
factor = 1
op = self.inferSampleChain(qgraph, uri_sample)
terms.append( ( factor, op) )
return terms
def inferSampleChain(self, qgraph, uri_sample):
tail = self.model.ontology._tail(uri_sample)
if tail == self.samplesource:
return []
q = """
SELECT ?nextsample ?sampleop
WHERE {
<%s> a owl:NamedIndividual ;
stat:hasSample ?nextsample ;
a ?sampleop
}
""" % uri_sample
for uri_sample_next, uri_sampleop in qgraph.query(q, initNs = self.myns):
tail = self.model.ontology._tail(uri_sampleop)
if tail in [ 'NamedIndividual' ]:
continue
op = self.inferSampleChain(qgraph, uri_sample_next)
break
skeleton = self.lut_skeleton[tail]
parlist = ParameterList([ p for p in self.inferParameters(qgraph, uri_sample) ])
op.append( (skeleton, parlist) )
return op
def inferParameters(self, qgraph, uri_query):
q = """
SELECT ?name ?type ?dim ?defval ?unit ?prefix
WHERE {
<%s> param:hasParameter ?par .
?par a owl:NamedIndividual ;
param:paramName ?name ;
param:hasType ?type ;
a ?dim .
OPTIONAL {
?par unit:hasValue ?defval .
OPTIONAL {
?par unit:hasUnit ?unit .
}
OPTIONAL {
?par unit:hasPrefix ?prefix .
}
}
}
""" % uri_query
for uri_name, uri_type, uri_dim, uri_default, uri_unit, uri_prefix in qgraph.query(q, initNs = self.myns):
tail = self.model.ontology._tail(uri_dim)
#FIXME: query should include the filter, but rdflib has a bug and only the spelt out form would work
# FILTER ( ?dim != owl:NamedIndividual )
# FILTER ( ?dim != query:QueryParameter )
# FILTER ( ?dim != stat:SampleOperatorParameter )
#
# like:
# FILTER ( ?dim != <http://www.w3.org/2002/07/owl#NamedIndividual> )
if tail in [ 'QueryParameter', 'SOP_tail', 'SOP_head', 'SOP_order', 'NamedIndividual' ]:
continue
yield self.model.translateParameter(str(uri_name), uri_dim, uri_unit, uri_prefix, uri_type, uri_default)
def translateResource(self, qgraph, uri_resource):
resource_name = self.model.ontology._tail(uri_resource)
q = """
SELECT ?resourcetype
WHERE {
<%s> a owl:NamedIndividual ;
a core:Resource ;
a ?resourcetype ;
}
""" % uri_resource
for uri_rtype, in qgraph.query(q, initNs = self.myns):
tail = self.model.ontology._tail(uri_rtype)
if tail in [ 'Resource', 'NamedIndividual' ]:
continue
if tail == "Node":
r = node(name = resource_name, resourceid = uri_resource)
for iface in self.inferInterfacesOf(qgraph, uri_resource):
r.addinterface(iface)
return r
else:
print "WW: unhandled rtype", uri_rtype
continue
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