def handleSearch(self, data):
self.log(repr(data))
queryType = data.query[0]
query = None
queryString = ""
if (queryType in ['type_1', 'type_101']):
zQuery = data.query[1]
attrset = zQuery.attributeSet
rpn = zQuery.rpn
query = CQLUtils.rpn2cql(rpn)
elif (queryType == 'type_0'):
# A Priori external
queryString = data.query[1]
elif (queryType == 'type_2'):
# ISO8777 (CCL)
queryString = data.query[1]
elif (queryType == 'type_104'):
# Look for CQL or SQL
type104 = data.query[1].direct_reference
if (type104 == Z3950_QUERY_CQL_ov):
queryString = data.query[1].encoding[1]
# Native CQL query
# Looks like: ((0,27) 'query', 0)
query = cql.parse(queryString)
elif (type104 == Z3950_QUERY_SQL_ov):
# Hopefully just pass off to Postgres
# Grab directly out of structure??
sqlQ = data.query[1].encoding[1]
queryString = sqlQ.queryExpression
else:
# Undefined query type
raise NotImplementedError
elif (queryType in ['type_102', 'type_100']):
# 102: Ranked List, not yet /defined/ let alone implemented
# 100: Z39.58 query (Standard was withdrawn)
raise NotImplementedError
if query:
self.log(query.toXCQL())
elif queryString:
self.log("type: " + queryType)
self.log("query: " + queryString)
rsetname = data.resultSetName
dbs = data.databaseNames
if len(dbs) == 1 and dbs[0].lower() == "ir-explain-1":
self.search_explain(query)
resp = SearchResponse()
resp.resultCount = 0
if len(dbs) == 1 and dbs[0].lower() == 'l5r':
rs = l5r.handle_search(None, query)
if (rs):
resp.resultCount = len(rs)
# Put it into our DB
rsid = rss.create_resultSet(None, rs)
rsidmap[data.resultSetName] = rsid
resp.numberOfRecordsReturned = 0
resp.nextResultSetPosition = 1
resp.searchStatus = 1
resp.resultSetStatus = 1
resp.presentStatus = PresentStatus.get_num_from_name('failure')
return self.encode(('searchResponse', resp))
def processQuery(self, req):
""" Send off search query to Z target and handle results """
if (not req.version):
diag = Diagnostic7()
diag.message = "Mandatory 'version' parameter not supplied"
diag.details = 'version'
raise diag
# Get our config based on URL
config = SRWConfig.configURLHash[req.calledAt]
# Setup for processing
if (req.query != ""):
req.queryStructure = CQLParser.parse(req.query)
else:
# No Query, Request is seriously Broken
f = Diagnostic7()
f.message = 'Request must include a query'
f.details = 'query'
raise f
req.queryStructure.config = config
req.xQuery = req.queryStructure.toXCQL()
self.echoedSearchRetrieveRequest = req
req.parseSortKeys()
if (req.diagnostics):
self.diagnostics = req.diagnostics
return
# Check if we recognise the record Schema
schema = req.get('recordSchema')
# Redirect to full value
if (config.recordNamespaces.has_key(schema)):
schema = config.recordNamespaces[schema]
if (not schema in config.recordNamespaces.values()):
diag = Diagnostic66()
diag.details = schema
raise diag
recordPacking = req.get('recordPacking')
if not recordPacking in ["string", "xml"]:
diag = Diagnostic71()
diag.details = req.recordPacking;
raise diag
startRecord = req.get('startRecord')
maximumRecords = req.get('maximumRecords')
# Is the query a 'present' special case
nsk = len(req.sortStructure) # If sorted, we need a temp result set
rsn = req.queryStructure.getResultSetId()
# Otherwise does the client want a resultSet?
ttl = req.get('resultSetTTL')
if ttl > config.maxTTL or ttl < 0:
# TTL is non fatal
diag = Diagnostic51()
diag.uri = diag.uri
diag.details = "TTL Requested (%s) is negative or greater than maximum of %d" % (req.resultSetTTL, config.maxTTL)
diag.message = diag.details
self.diagnostics = [diag]
ttl = 0
# Query for result set and no connection. Fail now.
if rsn and not config.conn:
diag = Diagnostic51()
diag.details = rsn
raise diag
if (nsk or not (config.conn and rsn)):
req.queryStructure.config = config
try:
qo = zoom.Query('CQL-TREE', req.queryStructure)
except SRWDiagnostic, err:
raise err
if config.logLevel > 1:
# Need convenient short form.
config.log("Built Query: %s" % ( pqf.rpn2pqf(qo.query) ))
# Connect
if config.conn == None:
config.zconnect()
def scanProcessQuery(self, req):
# Process a scan query
self.terms = []
config = SRWConfig.configURLHash[req.calledAt]
if (not req.version):
diag = Diagnostic7()
diag.message = "Mandatory 'version' parameter not supplied"
diag.details = 'version'
raise diag
if req.scanClause:
#convert clause into SearchClause object
clause = CQLParser.parse(req.scanClause)
# Stupid schema.
xsc = []
xsc.append(clause.index.toXCQL())
xsc.append(clause.relation.toXCQL())
xsc.append(clause.term.toXCQL())
req.xScanClause = "".join(xsc)
else:
# Seriously broken request.
f = Diagnostic7()
f.message = 'Request must include a query'
f.details = 'scanClause'
raise f
self.echoedScanRequest = req
if (req.diagnostics):
self.diagnostics = req.diagnostics
return
if (not clause.term.value):
clause.term.value = 'a'
clause.config = config
qo = zoom.Query('CQL-TREE', clause)
if config.logLevel > 1:
# Need convenient short form.
config.log("Built Query: %s" % ( pqf.rpn2pqf(qo.query) ))
if config.conn == None:
config.zconnect()
# Set up Z connection for scan
config.conn.stepSize = 0
mt = req.get('maximumTerms')
rp = req.get('responsePosition')
config.conn.numberOfEntries = mt
config.conn.responsePosition = rp
ss = []
retries = 0
while retries < 3:
try:
ss = config.conn.scan(qo)
retries = 3
except zoom.ConnectionError:
retries +=1
config.zconnect()
config.conn.stepSize = 0
config.conn.numberOfEntries = mt
config.conn.responsePosition = rp
except zoom.Bib1Err, bib1:
if bib1.condition == 9:
# No term found
diag = Diagnostic2()
diag.details = "No Terms Found."
raise diag
else:
diag = Diagnostic2()
diag.details = str(bib1)
raise diag
def handleSearch(self, session, data):
# Must return a response no matter what
resp = SearchResponse()
resp.resultCount = 0
resp.numberOfRecordsReturned = 0
resp.nextResultSetPosition = 1
resp.searchStatus = 1
resp.resultSetStatus = 1
resp.presentStatus = PresentStatus.get_num_from_name('failure')
try:
queryType = data.query[0]
query = ["", ""]
if (queryType in ['type_1', 'type_101']):
zQuery = data.query[1]
attrset = zQuery.attributeSet
query = ['rpn', zQuery.rpn]
elif (queryType == 'type_0'):
# A Priori external. We assume CQL
query = ['cql', data.query[1]]
elif (queryType == 'type_2'):
# ISO8777 (CCL)
rpn = ccl.mk_rpn_query(data.query[1])
query = ['rpn', rpn]
elif (queryType == 'type_104'):
# Look for CQL or SQL
type104 = data.query[1].direct_reference
if (type104 == Z3950_QUERY_CQL_ov):
query = ['cql', data.query[1].encoding[1]]
elif (type104 == Z3950_QUERY_SQL_ov):
query = ['sql', data.query[1].encoding[1].queryExpression]
# XXX Implement direct to postgres
raise NotImplementedError
else:
# Undefined query type
raise NotImplementedError
elif (queryType in ['type_102', 'type_100']):
# 102: Ranked List, not yet /defined/ let alone implemented
# 100: Z39.58 query (Standard was withdrawn)
raise NotImplementedError
rsetname = data.resultSetName
dbs = data.databaseNames
resultSets = []
if query[0] == 'cql':
q = CQLParser.parse(query[1])
for dbname in dbs:
cfg = self.session.configs.get(dbname, None)
if cfg is not None:
db = cfg.parent
if query[0] == 'rpn':
self.log("Trying to convert: %s" % (repr(query[1])))
q = CQLUtils.rpn2cql(query[1], cfg)
self.log("--> " + q.toCQL())
session.database = db.id
q = cqlParser.parse(q.toCQL())
resultSets.append(db.search(session, q))
else:
raise ValueError("%s not in %r" %
(dbname, self.session.configs.keys()))
if len(resultSets) > 1:
rs = resultSets[0]
for r in resultSets[1:]:
rs.combine(r)
elif len(resultSets) == 1:
rs = resultSets[0]
else:
# No resultset.
return self.encode(('searchResponse', resp))
resp.resultCount = len(rs)
# Maybe put it into our DB
if session.resultSets.has_key(rsetname):
rsid = session.resultSets[rsetname]
rs.id = rsid
session.resultSetStore.store_resultSet(session, rs)
else:
rsid = session.resultSetStore.create_resultSet(session, rs)
session.resultSets[rsetname] = rsid
# only keep 4 at once
keys = session.resultSetCache.keys()
if len(keys) > 3:
# delete one at random
r = rand.randint(0, 3)
del session.resultSetCache[keys[r]]
session.resultSetCache[rsid] = rs
except Exception, err:
# XXX add -correct- diagnostic
resp.numberOfRecordsReturned = 1
resp.nextResultSetPosition = 0
resp.resultSetStatus = 3
d = self.generate_diagnostic(err)
diag = ('nonSurrogateDiagnostic', d)
resp.records = diag
except ccl.QuerySyntaxError, err:
print "zoom raising", str(err), " for", query
raise QuerySyntaxError(str(err))
elif typ == 'S-CCL': # server-side ccl
self.typ = typ
self.query = ('type-2', query)
elif typ == 'S-CQL': # server-side cql
self.typ = typ
xq = asn1.EXTERNAL()
xq.direct_reference = oids.Z3950_QUERY_CQL_ov
xq.encoding = ('single-ASN1-type', query)
self.query = ('type_104', xq)
elif typ == 'CQL': # CQL to RPN transformation
self.typ = 'RPN'
try:
q = CQLParser.parse(query)
rpnq = z3950.RPNQuery()
# XXX Allow Attribute Architecture somehow?
rpnq.attributeSet = oids.Z3950_ATTRS_BIB1_ov
rpnq.rpn = q.toRPN()
self.query = ('type_1', rpnq)
except SRWDiagnostics.SRWDiagnostic, err:
raise err
except:
raise QuerySyntaxError
elif typ == 'PQF': # PQF to RPN transformation
self.typ = 'RPN'
try:
self.query = pqf.parse(query)
except:
raise QuerySyntaxError
except ccl.QuerySyntaxError, err:
print "zoom raising", str(err), " for", query
raise QuerySyntaxError(str(err))
elif typ == "S-CCL": # server-side ccl
self.typ = typ
self.query = ("type-2", query)
elif typ == "S-CQL": # server-side cql
self.typ = typ
xq = asn1.EXTERNAL()
xq.direct_reference = oids.Z3950_QUERY_CQL_ov
xq.encoding = ("single-ASN1-type", query)
self.query = ("type_104", xq)
elif typ == "CQL": # CQL to RPN transformation
self.typ = "RPN"
try:
q = CQLParser.parse(query)
rpnq = z3950.RPNQuery()
# XXX Allow Attribute Architecture somehow?
rpnq.attributeSet = oids.Z3950_ATTRS_BIB1_ov
rpnq.rpn = q.toRPN()
self.query = ("type_1", rpnq)
except SRWDiagnostics.SRWDiagnostic, err:
raise err
except:
raise QuerySyntaxError
elif typ == "PQF": # PQF to RPN transformation
self.typ = "RPN"
try:
self.query = pqf.parse(query)
except:
raise QuerySyntaxError
def __init__ (self, typ, query):
"""Creates Query object.
Supported query types: CCL, S-CCL, CQL, S-CQL, PQF, C2, ZSQL, CQL-TREE
"""
typ = typ.upper()
# XXX maybe replace if ... elif ... with dict mapping querytype to func
if typ == 'CCL':
self.typ = 'RPN'
try:
self.query = ccl.mk_rpn_query (query)
except ccl.QuerySyntaxError as err:
raise QuerySyntaxError (str(err))
elif typ == 'S-CCL': # server-side ccl
self.typ = typ
self.query = ('type-2', query)
elif typ == 'S-CQL': # server-side cql
self.typ = typ
xq = asn1.EXTERNAL()
xq.direct_reference = oids.Z3950_QUERY_CQL_ov
xq.encoding = ('single-ASN1-type', query)
self.query = ('type_104', xq)
elif typ == 'CQL': # CQL to RPN transformation
self.typ = 'RPN'
try:
q = CQLParser.parse(query)
rpnq = z3950.RPNQuery()
# XXX Allow Attribute Architecture somehow?
rpnq.attributeSet = oids.Z3950_ATTRS_BIB1_ov
rpnq.rpn = q.toRPN()
self.query = ('type_1', rpnq)
except SRWDiagnostics.SRWDiagnostic as err:
raise err
except:
raise QuerySyntaxError
elif typ == 'PQF': # PQF to RPN transformation
self.typ = 'RPN'
try:
self.query = pqf.parse(query)
except:
raise QuerySyntaxError
elif typ == 'C2': # Cheshire2 Syntax
self.typ = 'RPN'
try:
q = c2.parse(query)
self.query = q[0]
except:
raise QuerySyntaxError
elif typ == 'ZSQL': # External SQL
self.typ = typ
xq = asn1.EXTERNAL()
xq.direct_reference = oids.Z3950_QUERY_SQL_ov
q = z3950.SQLQuery()
q.queryExpression = query
xq.encoding = ('single-ASN1-type', q)
self.query = ('type_104', xq)
elif typ == 'CQL-TREE': # Tree to RPN
self.typ = 'RPN'
try:
rpnq = z3950.RPNQuery()
# XXX Allow Attribute Architecture
rpnq.attributeSet = oids.Z3950_ATTRS_BIB1_ov
rpnq.rpn = query.toRPN()
self.query = ('type_1', rpnq)
except SRWDiagnostics.SRWDiagnostic as err:
raise err
except:
raise QuerySyntaxError
else:
raise ClientNotImplError ('%s queries not supported' % typ)
def handleSearch(self, session, data):
# Must return a response no matter what
resp = SearchResponse()
resp.resultCount = 0
resp.numberOfRecordsReturned = 0
resp.nextResultSetPosition = 1
resp.searchStatus = 1
resp.resultSetStatus = 1
resp.presentStatus = PresentStatus.get_num_from_name('failure')
try:
queryType = data.query[0]
query = ["", ""]
if (queryType in ['type_1', 'type_101']):
zQuery = data.query[1]
attrset = zQuery.attributeSet
query = ['rpn', zQuery.rpn]
elif (queryType == 'type_0'):
# A Priori external. We assume CQL
query = ['cql', data.query[1]]
elif (queryType == 'type_2'):
# ISO8777 (CCL)
rpn = ccl.mk_rpn_query(data.query[1])
query = ['rpn', rpn]
elif (queryType == 'type_104'):
# Look for CQL or SQL
type104 = data.query[1].direct_reference
if (type104 == Z3950_QUERY_CQL_ov):
query = ['cql', data.query[1].encoding[1]]
elif (type104 == Z3950_QUERY_SQL_ov):
query = ['sql', data.query[1].encoding[1].queryExpression]
# XXX Implement direct to postgres
raise NotImplementedError
else:
# Undefined query type
raise NotImplementedError
elif (queryType in ['type_102', 'type_100']):
# 102: Ranked List, not yet /defined/ let alone implemented
# 100: Z39.58 query (Standard was withdrawn)
raise NotImplementedError
rsetname = data.resultSetName
dbs = data.databaseNames
resultSets = []
if query[0] == 'cql':
q = CQLParser.parse(query[1])
for dbname in dbs:
cfg = self.session.configs.get(dbname, None)
if cfg is not None:
db = cfg.parent
if query[0] == 'rpn':
self.log("Trying to convert: %s" % (repr(query[1])))
q = CQLUtils.rpn2cql(query[1], cfg)
self.log("--> " + q.toCQL())
session.database = db.id
q = cqlParser.parse(q.toCQL())
resultSets.append(db.search(session, q))
else:
raise ValueError("%s not in %r" % (dbname, self.session.configs.keys()))
if len(resultSets) > 1:
rs = resultSets[0]
for r in resultSets[1:]:
rs.combine(r)
elif len(resultSets) == 1:
rs = resultSets[0]
else:
# No resultset.
return self.encode(('searchResponse', resp))
resp.resultCount = len(rs)
# Maybe put it into our DB
if session.resultSets.has_key(rsetname):
rsid = session.resultSets[rsetname]
rs.id = rsid
session.resultSetStore.store_resultSet(session, rs)
else:
rsid = session.resultSetStore.create_resultSet(session, rs)
session.resultSets[rsetname] = rsid
# only keep 4 at once
keys = session.resultSetCache.keys()
if len(keys) > 3:
# delete one at random
r = rand.randint(0,3)
del session.resultSetCache[keys[r]]
session.resultSetCache[rsid] = rs
except Exception, err:
# XXX add -correct- diagnostic
resp.numberOfRecordsReturned = 1
resp.nextResultSetPosition = 0
resp.resultSetStatus = 3
d = self.generate_diagnostic(err)
diag = ('nonSurrogateDiagnostic', d)
resp.records = diag
