author | sylvain.thenault@logilab.fr |
Thu, 29 Jan 2009 15:16:51 +0100 | |
changeset 517 | 64402a18da5d |
parent 417 | 828424d2eb3c |
child 519 | 06390418cd9a |
permissions | -rw-r--r-- |
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"""Source to query another RQL repository using pyro |
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:organization: Logilab |
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:copyright: 2007-2008 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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""" |
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__docformat__ = "restructuredtext en" |
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import threading |
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from os.path import join |
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from mx.DateTime import DateTimeFromTicks |
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from Pyro.errors import PyroError, ConnectionClosedError |
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from logilab.common.configuration import REQUIRED |
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from rql.nodes import Constant |
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from rql.utils import rqlvar_maker |
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from cubicweb import dbapi, server |
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from cubicweb import BadConnectionId, UnknownEid, ConnectionError |
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from cubicweb.cwconfig import register_persistent_options |
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from cubicweb.server.sources import AbstractSource, ConnectionWrapper |
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class ReplaceByInOperator: |
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def __init__(self, eids): |
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self.eids = eids |
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class PyroRQLSource(AbstractSource): |
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"""External repository source, using Pyro connection""" |
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# boolean telling if modification hooks should be called when something is |
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# modified in this source |
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should_call_hooks = False |
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# boolean telling if the repository should connect to this source during |
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# migration |
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connect_for_migration = False |
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support_entities = None |
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options = ( |
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# XXX pyro-ns host/port |
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('pyro-ns-id', |
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{'type' : 'string', |
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'default': REQUIRED, |
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'help': 'identifier of the repository in the pyro name server', |
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'group': 'pyro-source', 'inputlevel': 0, |
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}), |
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('mapping-file', |
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{'type' : 'string', |
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'default': REQUIRED, |
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'help': 'path to a python file with the schema mapping definition', |
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'group': 'pyro-source', 'inputlevel': 1, |
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}), |
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('cubicweb-user', |
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{'type' : 'string', |
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'default': REQUIRED, |
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'help': 'user to use for connection on the distant repository', |
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'group': 'pyro-source', 'inputlevel': 0, |
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}), |
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('cubicweb-password', |
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{'type' : 'password', |
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'default': '', |
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'help': 'user to use for connection on the distant repository', |
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'group': 'pyro-source', 'inputlevel': 0, |
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}), |
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('base-url', |
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{'type' : 'string', |
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'default': '', |
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'help': 'url of the web site for the distant repository, if you want ' |
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'to generate external link to entities from this repository', |
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'group': 'pyro-source', 'inputlevel': 1, |
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}), |
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('pyro-ns-host', |
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{'type' : 'string', |
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'default': None, |
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'help': 'Pyro name server\'s host. If not set, default to the value \ |
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from all_in_one.conf.', |
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'group': 'pyro-source', 'inputlevel': 1, |
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}), |
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('pyro-ns-port', |
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{'type' : 'int', |
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'default': None, |
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'help': 'Pyro name server\'s listening port. If not set, default to \ |
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the value from all_in_one.conf.', |
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'group': 'pyro-source', 'inputlevel': 1, |
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}), |
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('pyro-ns-group', |
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{'type' : 'string', |
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'default': None, |
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'help': 'Pyro name server\'s group where the repository will be \ |
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registered. If not set, default to the value from all_in_one.conf.', |
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'group': 'pyro-source', 'inputlevel': 1, |
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}), |
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('synchronization-interval', |
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{'type' : 'int', |
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'default': 5*60, |
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'help': 'interval between synchronization with the external \ |
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repository (default to 5 minutes).', |
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'group': 'pyro-source', 'inputlevel': 2, |
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}), |
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|
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) |
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PUBLIC_KEYS = AbstractSource.PUBLIC_KEYS + ('base-url',) |
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_conn = None |
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def __init__(self, repo, appschema, source_config, *args, **kwargs): |
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AbstractSource.__init__(self, repo, appschema, source_config, |
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*args, **kwargs) |
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mappingfile = source_config['mapping-file'] |
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if not mappingfile[0] == '/': |
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114 |
mappingfile = join(repo.config.apphome, mappingfile) |
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115 |
mapping = {} |
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116 |
execfile(mappingfile, mapping) |
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117 |
self.support_entities = mapping['support_entities'] |
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118 |
self.support_relations = mapping.get('support_relations', {}) |
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119 |
self.dont_cross_relations = mapping.get('dont_cross_relations', ()) |
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120 |
self.cross_relations = mapping.get('cross_relations', ()) |
257
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121 |
baseurl = source_config.get('base-url') |
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122 |
if baseurl and not baseurl.endswith('/'): |
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123 |
source_config['base-url'] += '/' |
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124 |
self.config = source_config |
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125 |
myoptions = (('%s.latest-update-time' % self.uri, |
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126 |
{'type' : 'int', 'sitewide': True, |
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127 |
'default': 0, |
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128 |
'help': _('timestamp of the latest source synchronization.'), |
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129 |
'group': 'sources', |
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130 |
}),) |
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131 |
register_persistent_options(myoptions) |
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132 |
|
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133 |
def last_update_time(self): |
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134 |
pkey = u'sources.%s.latest-update-time' % self.uri |
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135 |
rql = 'Any V WHERE X is EProperty, X value V, X pkey %(k)s' |
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136 |
session = self.repo.internal_session() |
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137 |
try: |
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138 |
rset = session.execute(rql, {'k': pkey}) |
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139 |
if not rset: |
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140 |
# insert it |
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141 |
session.execute('INSERT EProperty X: X pkey %(k)s, X value %(v)s', |
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142 |
{'k': pkey, 'v': u'0'}) |
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143 |
session.commit() |
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144 |
timestamp = 0 |
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145 |
else: |
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146 |
assert len(rset) == 1 |
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147 |
timestamp = int(rset[0][0]) |
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148 |
return DateTimeFromTicks(timestamp) |
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149 |
finally: |
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150 |
session.close() |
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151 |
|
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152 |
def init(self): |
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153 |
"""method called by the repository once ready to handle request""" |
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154 |
interval = int(self.config.get('synchronization-interval', 5*60)) |
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155 |
self.repo.looping_task(interval, self.synchronize) |
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156 |
|
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157 |
def synchronize(self, mtime=None): |
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158 |
"""synchronize content known by this repository with content in the |
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159 |
external repository |
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160 |
""" |
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161 |
self.info('synchronizing pyro source %s', self.uri) |
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162 |
extrepo = self.get_connection()._repo |
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163 |
etypes = self.support_entities.keys() |
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164 |
if mtime is None: |
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165 |
mtime = self.last_update_time() |
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166 |
updatetime, modified, deleted = extrepo.entities_modified_since(etypes, |
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167 |
mtime) |
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168 |
repo = self.repo |
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169 |
session = repo.internal_session() |
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170 |
try: |
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171 |
for etype, extid in modified: |
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|
172 |
try: |
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173 |
eid = self.extid2eid(extid, etype, session) |
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174 |
rset = session.eid_rset(eid, etype) |
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175 |
entity = rset.get_entity(0, 0) |
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|
176 |
entity.complete(entity.e_schema.indexable_attributes()) |
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177 |
repo.index_entity(session, entity) |
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|
178 |
except: |
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|
179 |
self.exception('while updating %s with external id %s of source %s', |
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|
180 |
etype, extid, self.uri) |
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|
181 |
continue |
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182 |
for etype, extid in deleted: |
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|
183 |
try: |
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|
184 |
eid = self.extid2eid(extid, etype, session, insert=False) |
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|
185 |
# entity has been deleted from external repository but is not known here |
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|
186 |
if eid is not None: |
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|
187 |
repo.delete_info(session, eid) |
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|
188 |
except: |
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|
189 |
self.exception('while updating %s with external id %s of source %s', |
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|
190 |
etype, extid, self.uri) |
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|
191 |
continue |
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|
192 |
session.execute('SET X value %(v)s WHERE X pkey %(k)s', |
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|
193 |
{'k': u'sources.%s.latest-update-time' % self.uri, |
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|
194 |
'v': unicode(int(updatetime.ticks()))}) |
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|
195 |
session.commit() |
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|
196 |
finally: |
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|
197 |
session.close() |
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|
198 |
|
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|
199 |
def _get_connection(self): |
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|
200 |
"""open and return a connection to the source""" |
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|
201 |
nshost = self.config.get('pyro-ns-host') or self.repo.config['pyro-ns-host'] |
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|
202 |
nsport = self.config.get('pyro-ns-port') or self.repo.config['pyro-ns-port'] |
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|
203 |
nsgroup = self.config.get('pyro-ns-group') or self.repo.config['pyro-ns-group'] |
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|
204 |
#cnxprops = ConnectionProperties(cnxtype=self.config['cnx-type']) |
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|
205 |
return dbapi.connect(database=self.config['pyro-ns-id'], |
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|
206 |
user=self.config['cubicweb-user'], |
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|
207 |
password=self.config['cubicweb-password'], |
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208 |
host=nshost, port=nsport, group=nsgroup, |
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|
209 |
setvreg=False) #cnxprops=cnxprops) |
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|
210 |
|
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|
211 |
def get_connection(self): |
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212 |
try: |
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213 |
return self._get_connection() |
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214 |
except (ConnectionError, PyroError): |
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|
215 |
self.critical("can't get connection to source %s", self.uri, |
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216 |
exc_info=1) |
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|
217 |
return ConnectionWrapper() |
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|
218 |
|
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|
219 |
def check_connection(self, cnx): |
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220 |
"""check connection validity, return None if the connection is still valid |
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|
221 |
else a new connection |
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|
222 |
""" |
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|
223 |
# we have to transfer manually thread ownership. This can be done safely |
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|
224 |
# since the pool to which belong the connection is affected to one |
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|
225 |
# session/thread and can't be called simultaneously |
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|
226 |
try: |
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|
227 |
cnx._repo._transferThread(threading.currentThread()) |
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|
228 |
except AttributeError: |
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|
229 |
# inmemory connection |
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230 |
pass |
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|
231 |
if not isinstance(cnx, ConnectionWrapper): |
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|
232 |
try: |
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|
233 |
cnx.check() |
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|
234 |
return # ok |
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|
235 |
except (BadConnectionId, ConnectionClosedError): |
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|
236 |
pass |
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|
237 |
# try to reconnect |
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|
238 |
return self.get_connection() |
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|
239 |
|
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|
240 |
|
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|
241 |
def syntax_tree_search(self, session, union, args=None, cachekey=None, |
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|
242 |
varmap=None): |
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|
243 |
"""return result from this source for a rql query (actually from a rql |
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|
244 |
syntax tree and a solution dictionary mapping each used variable to a |
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|
245 |
possible type). If cachekey is given, the query necessary to fetch the |
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|
246 |
results (but not the results themselves) may be cached using this key. |
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|
247 |
""" |
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|
248 |
if not args is None: |
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|
249 |
args = args.copy() |
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|
250 |
if server.DEBUG: |
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|
251 |
print 'RQL FOR PYRO SOURCE', self.uri |
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|
252 |
print union.as_string() |
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|
253 |
if args: print 'ARGS', args |
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|
254 |
print 'SOLUTIONS', ','.join(str(s.solutions) for s in union.children) |
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|
255 |
# get cached cursor anyway |
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|
256 |
cu = session.pool[self.uri] |
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|
257 |
if cu is None: |
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|
258 |
# this is a ConnectionWrapper instance |
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|
259 |
msg = session._("can't connect to source %s, some data may be missing") |
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|
260 |
session.set_shared_data('sources_error', msg % self.uri) |
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|
261 |
return [] |
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|
262 |
try: |
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|
263 |
rql, cachekey = RQL2RQL(self).generate(session, union, args) |
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|
264 |
except UnknownEid, ex: |
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|
265 |
if server.DEBUG: |
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|
266 |
print 'unknown eid', ex, 'no results' |
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|
267 |
return [] |
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|
268 |
if server.DEBUG: |
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|
269 |
print 'TRANSLATED RQL', rql |
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|
270 |
try: |
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|
271 |
rset = cu.execute(rql, args, cachekey) |
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|
272 |
except Exception, ex: |
4c7d3af7e94d
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|
273 |
self.exception(str(ex)) |
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|
274 |
msg = session._("error while querying source %s, some data may be missing") |
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|
275 |
session.set_shared_data('sources_error', msg % self.uri) |
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|
276 |
return [] |
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|
277 |
descr = rset.description |
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|
278 |
if rset: |
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parents:
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|
279 |
needtranslation = [] |
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|
280 |
for i, etype in enumerate(descr[0]): |
4c7d3af7e94d
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|
281 |
if (etype is None or not self.schema.eschema(etype).is_final() or |
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parents:
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|
282 |
getattr(union.locate_subquery(i, etype, args).selection[i], 'uidtype', None)): |
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|
283 |
needtranslation.append(i) |
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parents:
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changeset
|
284 |
if needtranslation: |
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parents:
diff
changeset
|
285 |
for rowindex, row in enumerate(rset): |
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parents:
diff
changeset
|
286 |
for colindex in needtranslation: |
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parents:
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changeset
|
287 |
if row[colindex] is not None: # optional variable |
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parents:
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changeset
|
288 |
etype = descr[rowindex][colindex] |
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parents:
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changeset
|
289 |
eid = self.extid2eid(row[colindex], etype, session) |
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|
290 |
row[colindex] = eid |
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changeset
|
291 |
results = rset.rows |
4c7d3af7e94d
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changeset
|
292 |
else: |
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parents:
diff
changeset
|
293 |
results = [] |
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|
294 |
if server.DEBUG: |
4c7d3af7e94d
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parents:
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changeset
|
295 |
if len(results)>10: |
4c7d3af7e94d
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parents:
diff
changeset
|
296 |
print '--------------->', results[:10], '...', len(results) |
4c7d3af7e94d
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parents:
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changeset
|
297 |
else: |
4c7d3af7e94d
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parents:
diff
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|
298 |
print '--------------->', results |
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|
299 |
return results |
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changeset
|
300 |
|
4c7d3af7e94d
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diff
changeset
|
301 |
def _entity_relations_and_kwargs(self, session, entity): |
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|
302 |
relations = [] |
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|
303 |
kwargs = {'x': self.eid2extid(entity.eid, session)} |
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parents:
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changeset
|
304 |
for key, val in entity.iteritems(): |
4c7d3af7e94d
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parents:
diff
changeset
|
305 |
relations.append('X %s %%(%s)s' % (key, key)) |
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parents:
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changeset
|
306 |
kwargs[key] = val |
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parents:
diff
changeset
|
307 |
return relations, kwargs |
4c7d3af7e94d
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parents:
diff
changeset
|
308 |
|
4c7d3af7e94d
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parents:
diff
changeset
|
309 |
def add_entity(self, session, entity): |
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parents:
diff
changeset
|
310 |
"""add a new entity to the source""" |
4c7d3af7e94d
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parents:
diff
changeset
|
311 |
raise NotImplementedError() |
4c7d3af7e94d
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parents:
diff
changeset
|
312 |
|
4c7d3af7e94d
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parents:
diff
changeset
|
313 |
def update_entity(self, session, entity): |
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parents:
diff
changeset
|
314 |
"""update an entity in the source""" |
4c7d3af7e94d
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parents:
diff
changeset
|
315 |
relations, kwargs = self._entity_relations_and_kwargs(session, entity) |
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parents:
diff
changeset
|
316 |
cu = session.pool[self.uri] |
4c7d3af7e94d
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parents:
diff
changeset
|
317 |
cu.execute('SET %s WHERE X eid %%(x)s' % ','.join(relations), |
4c7d3af7e94d
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parents:
diff
changeset
|
318 |
kwargs, 'x') |
4c7d3af7e94d
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parents:
diff
changeset
|
319 |
|
4c7d3af7e94d
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Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
320 |
def delete_entity(self, session, etype, eid): |
4c7d3af7e94d
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parents:
diff
changeset
|
321 |
"""delete an entity from the source""" |
4c7d3af7e94d
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Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
322 |
cu = session.pool[self.uri] |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
323 |
cu.execute('DELETE %s X WHERE X eid %%(x)s' % etype, |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
324 |
{'x': self.eid2extid(eid, session)}, 'x') |
4c7d3af7e94d
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Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
325 |
|
4c7d3af7e94d
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Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
326 |
def add_relation(self, session, subject, rtype, object): |
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parents:
diff
changeset
|
327 |
"""add a relation to the source""" |
4c7d3af7e94d
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Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
328 |
cu = session.pool[self.uri] |
4c7d3af7e94d
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Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
329 |
cu.execute('SET X %s Y WHERE X eid %%(x)s, Y eid %%(y)s' % rtype, |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
330 |
{'x': self.eid2extid(subject, session), |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
331 |
'y': self.eid2extid(object, session)}, ('x', 'y')) |
4c7d3af7e94d
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Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
332 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
333 |
def delete_relation(self, session, subject, rtype, object): |
4c7d3af7e94d
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parents:
diff
changeset
|
334 |
"""delete a relation from the source""" |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
335 |
cu = session.pool[self.uri] |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
336 |
cu.execute('DELETE X %s Y WHERE X eid %%(x)s, Y eid %%(y)s' % rtype, |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
337 |
{'x': self.eid2extid(subject, session), |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
338 |
'y': self.eid2extid(object, session)}, ('x', 'y')) |
4c7d3af7e94d
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parents:
diff
changeset
|
339 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
340 |
|
4c7d3af7e94d
restore multi-sources capabilities
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parents:
diff
changeset
|
341 |
class RQL2RQL(object): |
4c7d3af7e94d
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parents:
diff
changeset
|
342 |
"""translate a local rql query to be executed on a distant repository""" |
4c7d3af7e94d
restore multi-sources capabilities
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parents:
diff
changeset
|
343 |
def __init__(self, source): |
4c7d3af7e94d
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parents:
diff
changeset
|
344 |
self.source = source |
390
739d12586b9d
avoid potentialy mis-interpreted attribute error
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257
diff
changeset
|
345 |
self.current_operator = None |
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parents:
257
diff
changeset
|
346 |
|
257
4c7d3af7e94d
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parents:
diff
changeset
|
347 |
def _accept_children(self, node): |
4c7d3af7e94d
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parents:
diff
changeset
|
348 |
res = [] |
4c7d3af7e94d
restore multi-sources capabilities
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parents:
diff
changeset
|
349 |
for child in node.children: |
4c7d3af7e94d
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parents:
diff
changeset
|
350 |
rql = child.accept(self) |
4c7d3af7e94d
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parents:
diff
changeset
|
351 |
if rql is not None: |
4c7d3af7e94d
restore multi-sources capabilities
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parents:
diff
changeset
|
352 |
res.append(rql) |
4c7d3af7e94d
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parents:
diff
changeset
|
353 |
return res |
4c7d3af7e94d
restore multi-sources capabilities
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parents:
diff
changeset
|
354 |
|
4c7d3af7e94d
restore multi-sources capabilities
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parents:
diff
changeset
|
355 |
def generate(self, session, rqlst, args): |
4c7d3af7e94d
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parents:
diff
changeset
|
356 |
self._session = session |
4c7d3af7e94d
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parents:
diff
changeset
|
357 |
self.kwargs = args |
4c7d3af7e94d
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parents:
diff
changeset
|
358 |
self.cachekey = [] |
4c7d3af7e94d
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parents:
diff
changeset
|
359 |
self.need_translation = False |
4c7d3af7e94d
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parents:
diff
changeset
|
360 |
return self.visit_union(rqlst), self.cachekey |
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restore multi-sources capabilities
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parents:
diff
changeset
|
361 |
|
4c7d3af7e94d
restore multi-sources capabilities
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parents:
diff
changeset
|
362 |
def visit_union(self, node): |
4c7d3af7e94d
restore multi-sources capabilities
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parents:
diff
changeset
|
363 |
s = self._accept_children(node) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
364 |
if len(s) > 1: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
365 |
return ' UNION '.join('(%s)' % q for q in s) |
4c7d3af7e94d
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parents:
diff
changeset
|
366 |
return s[0] |
4c7d3af7e94d
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parents:
diff
changeset
|
367 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
368 |
def visit_select(self, node): |
4c7d3af7e94d
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parents:
diff
changeset
|
369 |
"""return the tree as an encoded rql string""" |
4c7d3af7e94d
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parents:
diff
changeset
|
370 |
self._varmaker = rqlvar_maker(defined=node.defined_vars.copy()) |
4c7d3af7e94d
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parents:
diff
changeset
|
371 |
self._const_var = {} |
4c7d3af7e94d
restore multi-sources capabilities
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parents:
diff
changeset
|
372 |
if node.distinct: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
373 |
base = 'DISTINCT Any' |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
374 |
else: |
4c7d3af7e94d
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Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
375 |
base = 'Any' |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
376 |
s = ['%s %s' % (base, ','.join(v.accept(self) for v in node.selection))] |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
377 |
if node.groupby: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
378 |
s.append('GROUPBY %s' % ', '.join(group.accept(self) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
379 |
for group in node.groupby)) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
380 |
if node.orderby: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
381 |
s.append('ORDERBY %s' % ', '.join(self.visit_sortterm(term) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
382 |
for term in node.orderby)) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
383 |
if node.limit is not None: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
384 |
s.append('LIMIT %s' % node.limit) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
385 |
if node.offset: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
386 |
s.append('OFFSET %s' % node.offset) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
387 |
restrictions = [] |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
388 |
if node.where is not None: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
389 |
nr = node.where.accept(self) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
390 |
if nr is not None: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
391 |
restrictions.append(nr) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
392 |
if restrictions: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
393 |
s.append('WHERE %s' % ','.join(restrictions)) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
394 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
395 |
if node.having: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
396 |
s.append('HAVING %s' % ', '.join(term.accept(self) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
397 |
for term in node.having)) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
398 |
subqueries = [] |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
399 |
for subquery in node.with_: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
400 |
subqueries.append('%s BEING (%s)' % (','.join(ca.name for ca in subquery.aliases), |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
401 |
self.visit_union(subquery.query))) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
402 |
if subqueries: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
403 |
s.append('WITH %s' % (','.join(subqueries))) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
404 |
return ' '.join(s) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
405 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
406 |
def visit_and(self, node): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
407 |
res = self._accept_children(node) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
408 |
if res: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
409 |
return ', '.join(res) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
410 |
return |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
411 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
412 |
def visit_or(self, node): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
413 |
res = self._accept_children(node) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
414 |
if len(res) > 1: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
415 |
return ' OR '.join('(%s)' % rql for rql in res) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
416 |
elif res: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
417 |
return res[0] |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
418 |
return |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
419 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
420 |
def visit_not(self, node): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
421 |
rql = node.children[0].accept(self) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
422 |
if rql: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
423 |
return 'NOT (%s)' % rql |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
424 |
return |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
425 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
426 |
def visit_exists(self, node): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
427 |
return 'EXISTS(%s)' % node.children[0].accept(self) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
428 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
429 |
def visit_relation(self, node): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
430 |
try: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
431 |
if isinstance(node.children[0], Constant): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
432 |
# simplified rqlst, reintroduce eid relation |
391
42693fe3ef6f
skip neged relation here as well
sylvain.thenault@logilab.fr
parents:
390
diff
changeset
|
433 |
try: |
42693fe3ef6f
skip neged relation here as well
sylvain.thenault@logilab.fr
parents:
390
diff
changeset
|
434 |
restr, lhs = self.process_eid_const(node.children[0]) |
42693fe3ef6f
skip neged relation here as well
sylvain.thenault@logilab.fr
parents:
390
diff
changeset
|
435 |
except UnknownEid: |
42693fe3ef6f
skip neged relation here as well
sylvain.thenault@logilab.fr
parents:
390
diff
changeset
|
436 |
# can safely skip not relation with an unsupported eid |
42693fe3ef6f
skip neged relation here as well
sylvain.thenault@logilab.fr
parents:
390
diff
changeset
|
437 |
if node.neged(strict=True): |
42693fe3ef6f
skip neged relation here as well
sylvain.thenault@logilab.fr
parents:
390
diff
changeset
|
438 |
return |
42693fe3ef6f
skip neged relation here as well
sylvain.thenault@logilab.fr
parents:
390
diff
changeset
|
439 |
raise |
257
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
440 |
else: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
441 |
lhs = node.children[0].accept(self) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
442 |
restr = None |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
443 |
except UnknownEid: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
444 |
# can safely skip not relation with an unsupported eid |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
445 |
if node.neged(strict=True): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
446 |
return |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
447 |
# XXX what about optional relation or outer NOT EXISTS() |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
448 |
raise |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
449 |
if node.optional in ('left', 'both'): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
450 |
lhs += '?' |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
451 |
if node.r_type == 'eid' or not self.source.schema.rschema(node.r_type).is_final(): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
452 |
self.need_translation = True |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
453 |
self.current_operator = node.operator() |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
454 |
if isinstance(node.children[0], Constant): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
455 |
self.current_etypes = (node.children[0].uidtype,) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
456 |
else: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
457 |
self.current_etypes = node.children[0].variable.stinfo['possibletypes'] |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
458 |
try: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
459 |
rhs = node.children[1].accept(self) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
460 |
except UnknownEid: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
461 |
# can safely skip not relation with an unsupported eid |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
462 |
if node.neged(strict=True): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
463 |
return |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
464 |
# XXX what about optional relation or outer NOT EXISTS() |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
465 |
raise |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
466 |
except ReplaceByInOperator, ex: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
467 |
rhs = 'IN (%s)' % ','.join(str(eid) for eid in ex.eids) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
468 |
self.need_translation = False |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
469 |
self.current_operator = None |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
470 |
if node.optional in ('right', 'both'): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
471 |
rhs += '?' |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
472 |
if restr is not None: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
473 |
return '%s %s %s, %s' % (lhs, node.r_type, rhs, restr) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
474 |
return '%s %s %s' % (lhs, node.r_type, rhs) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
475 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
476 |
def visit_comparison(self, node): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
477 |
if node.operator in ('=', 'IS'): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
478 |
return node.children[0].accept(self) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
479 |
return '%s %s' % (node.operator.encode(), |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
480 |
node.children[0].accept(self)) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
481 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
482 |
def visit_mathexpression(self, node): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
483 |
return '(%s %s %s)' % (node.children[0].accept(self), |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
484 |
node.operator.encode(), |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
485 |
node.children[1].accept(self)) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
486 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
487 |
def visit_function(self, node): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
488 |
#if node.name == 'IN': |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
489 |
res = [] |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
490 |
for child in node.children: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
491 |
try: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
492 |
rql = child.accept(self) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
493 |
except UnknownEid, ex: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
494 |
continue |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
495 |
res.append(rql) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
496 |
if not res: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
497 |
raise ex |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
498 |
return '%s(%s)' % (node.name, ', '.join(res)) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
499 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
500 |
def visit_constant(self, node): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
501 |
if self.need_translation or node.uidtype: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
502 |
if node.type == 'Int': |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
503 |
return str(self.eid2extid(node.value)) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
504 |
if node.type == 'Substitute': |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
505 |
key = node.value |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
506 |
# ensure we have not yet translated the value... |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
507 |
if not key in self._const_var: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
508 |
self.kwargs[key] = self.eid2extid(self.kwargs[key]) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
509 |
self.cachekey.append(key) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
510 |
self._const_var[key] = None |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
511 |
return node.as_string() |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
512 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
513 |
def visit_variableref(self, node): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
514 |
"""get the sql name for a variable reference""" |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
515 |
return node.name |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
516 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
517 |
def visit_sortterm(self, node): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
518 |
if node.asc: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
519 |
return node.term.accept(self) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
520 |
return '%s DESC' % node.term.accept(self) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
521 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
522 |
def process_eid_const(self, const): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
523 |
value = const.eval(self.kwargs) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
524 |
try: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
525 |
return None, self._const_var[value] |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
526 |
except: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
527 |
var = self._varmaker.next() |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
528 |
self.need_translation = True |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
529 |
restr = '%s eid %s' % (var, self.visit_constant(const)) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
530 |
self.need_translation = False |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
531 |
self._const_var[value] = var |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
532 |
return restr, var |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
533 |
|
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
534 |
def eid2extid(self, eid): |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
535 |
try: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
536 |
return self.source.eid2extid(eid, self._session) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
537 |
except UnknownEid: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
538 |
operator = self.current_operator |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
539 |
if operator is not None and operator != '=': |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
540 |
# deal with query like X eid > 12 |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
541 |
# |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
542 |
# The problem is |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
543 |
# that eid order in the external source may differ from the |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
544 |
# local source |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
545 |
# |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
546 |
# So search for all eids from this |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
547 |
# source matching the condition locally and then to replace the |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
548 |
# > 12 branch by IN (eids) (XXX we may have to insert a huge |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
549 |
# number of eids...) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
550 |
# planner so that |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
551 |
sql = "SELECT extid FROM entities WHERE source='%s' AND type IN (%s) AND eid%s%s" |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
552 |
etypes = ','.join("'%s'" % etype for etype in self.current_etypes) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
553 |
cu = self._session.system_sql(sql % (self.source.uri, etypes, |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
554 |
operator, eid)) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
555 |
# XXX buggy cu.rowcount which may be zero while there are some |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
556 |
# results |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
557 |
rows = cu.fetchall() |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
558 |
if rows: |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
559 |
raise ReplaceByInOperator((r[0] for r in rows)) |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
560 |
raise |
4c7d3af7e94d
restore multi-sources capabilities
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
561 |