server/schemaserial.py
author Alexandre Fayolle <alexandre.fayolle@logilab.fr>
Sat, 29 May 2010 09:58:23 +0000
branchstable
changeset 5603 d8d9f4ec252d
parent 5426 0d4853a6e5ee
child 5558 afd1face1faf
permissions -rw-r--r--
ldap source logging Added some extra logging statement to understand what happens in the ldap source.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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# copyright 2003-2010 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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# This file is part of CubicWeb.
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#
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# CubicWeb is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
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"""functions for schema / permissions (de)serialization using RQL
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"""
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__docformat__ = "restructuredtext en"
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import os
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from itertools import chain
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from logilab.common.shellutils import ProgressBar
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from yams import schema as schemamod, buildobjs as ybo
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from cubicweb.schema import CONSTRAINTS, ETYPE_NAME_MAP, VIRTUAL_RTYPES
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from cubicweb.server import sqlutils
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def group_mapping(cursor, interactive=True):
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    """create a group mapping from an rql cursor
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    A group mapping has standard group names as key (managers, owners at least)
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    and the actual CWGroup entity's eid as associated value.
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    In interactive mode (the default), missing groups'eid will be prompted
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    from the user.
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    """
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    res = {}
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    for eid, name in cursor.execute('Any G, N WHERE G is CWGroup, G name N',
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                                    build_descr=False):
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        res[name] = eid
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    if not interactive:
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        return res
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    missing = [g for g in ('owners', 'managers', 'users', 'guests') if not g in res]
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    if missing:
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        print 'some native groups are missing but the following groups have been found:'
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        print '\n'.join('* %s (%s)' % (n, eid) for n, eid in res.items())
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        print
0
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        print 'enter the eid of a to group to map to each missing native group'
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        print 'or just type enter to skip permissions granted to a group'
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        for group in missing:
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            while True:
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                value = raw_input('eid for group %s: ' % group).strip()
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                if not value:
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                    continue
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                try:
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                    res[group] = int(value)
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                except ValueError:
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                    print 'eid should be an integer'
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                    continue
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    return res
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def cstrtype_mapping(cursor):
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    """cached constraint types mapping"""
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    map = dict(cursor.execute('Any T, X WHERE X is CWConstraintType, X name T'))
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    if not 'BoundConstraint' in map:
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        map['BoundConstraint'] = map['BoundaryConstraint']
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    return map
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# schema / perms deserialization ##############################################
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def deserialize_schema(schema, session):
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    """return a schema according to information stored in an rql database
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    as CWRType and CWEType entities
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    """
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    repo = session.repo
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    dbhelper = repo.system_source.dbhelper
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    # 3.6 migration
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    sqlcu = session.pool['system']
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    sqlcu.execute("SELECT * FROM cw_CWRType WHERE cw_name='symetric'")
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    if sqlcu.fetchall():
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        sql = dbhelper.sql_rename_col('cw_CWRType', 'cw_symetric', 'cw_symmetric',
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                                      dbhelper.TYPE_MAPPING['Boolean'], True)
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        sqlcu.execute(sql)
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        sqlcu.execute("UPDATE cw_CWRType SET cw_name='symmetric' WHERE cw_name='symetric'")
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    sidx = {}
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    permsdict = deserialize_ertype_permissions(session)
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    schema.reading_from_database = True
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    for eid, etype, desc in session.execute(
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        'Any X, N, D WHERE X is CWEType, X name N, X description D',
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        build_descr=False):
0
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        # base types are already in the schema, skip them
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        if etype in schemamod.BASE_TYPES:
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            # just set the eid
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            eschema = schema.eschema(etype)
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            eschema.eid = eid
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            sidx[eid] = eschema
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            continue
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        if etype in ETYPE_NAME_MAP:
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            netype = ETYPE_NAME_MAP[etype]
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            # can't use write rql queries at this point, use raw sql
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            session.system_sql('UPDATE %(p)sCWEType SET %(p)sname=%%(n)s WHERE %(p)seid=%%(x)s'
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                               % {'p': sqlutils.SQL_PREFIX},
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                               {'x': eid, 'n': netype})
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            session.system_sql('UPDATE entities SET type=%(n)s WHERE type=%(x)s',
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                               {'x': etype, 'n': netype})
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            session.commit(False)
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            try:
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                session.system_sql('UPDATE deleted_entities SET type=%(n)s WHERE type=%(x)s',
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                                   {'x': etype, 'n': netype})
0
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            except:
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                pass
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            tocleanup = [eid]
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            tocleanup += (eid for eid, (eidetype, uri, extid) in repo._type_source_cache.items()
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                          if etype == eidetype)
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            repo.clear_caches(tocleanup)
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            session.commit(False)
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            etype = netype
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        etype = ybo.EntityType(name=etype, description=desc, eid=eid)
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        eschema = schema.add_entity_type(etype)
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        sidx[eid] = eschema
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        set_perms(eschema, permsdict)
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    for etype, stype in session.execute(
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        'Any XN, ETN WHERE X is CWEType, X name XN, X specializes ET, ET name ETN',
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        build_descr=False):
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        schema.eschema(etype)._specialized_type = stype
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        schema.eschema(stype)._specialized_by.append(etype)
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    for eid, rtype, desc, sym, il, ftc in session.execute(
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        'Any X,N,D,S,I,FTC WHERE X is CWRType, X name N, X description D, '
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        'X symmetric S, X inlined I, X fulltext_container FTC', build_descr=False):
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        rtype = ybo.RelationType(name=rtype, description=desc,
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                                 symmetric=bool(sym), inlined=bool(il),
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                                 fulltext_container=ftc, eid=eid)
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        rschema = schema.add_relation_type(rtype)
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        sidx[eid] = rschema
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    cstrsdict = deserialize_rdef_constraints(session)
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    for values in session.execute(
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        'Any X,SE,RT,OE,CARD,ORD,DESC,IDX,FTIDX,I18N,DFLT WHERE X is CWAttribute,'
0
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        'X relation_type RT, X cardinality CARD, X ordernum ORD, X indexed IDX,'
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        'X description DESC, X internationalizable I18N, X defaultval DFLT,'
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        'X fulltextindexed FTIDX, X from_entity SE, X to_entity OE',
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        build_descr=False):
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        rdefeid, seid, reid, teid, card, ord, desc, idx, ftidx, i18n, default = values
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        rdef = ybo.RelationDefinition(sidx[seid].type, sidx[reid].type, sidx[teid].type,
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                                      cardinality=card,
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                                      constraints=cstrsdict.get(rdefeid, ()),
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                                      order=ord, description=desc,
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                                      indexed=idx, fulltextindexed=ftidx,
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                                      internationalizable=i18n,
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                                      default=default, eid=rdefeid)
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        rdefs = schema.add_relation_def(rdef)
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        # rdefs can be None on duplicated relation definitions (e.g. symmetrics)
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        if rdefs is not None:
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            set_perms(rdefs, permsdict)
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    for values in session.execute(
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        'Any X,SE,RT,OE,CARD,ORD,DESC,C WHERE X is CWRelation, X relation_type RT,'
0
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        'X cardinality CARD, X ordernum ORD, X description DESC, '
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        'X from_entity SE, X to_entity OE, X composite C', build_descr=False):
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        rdefeid, seid, reid, teid, card, ord, desc, c = values
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        rdef = ybo.RelationDefinition(sidx[seid].type, sidx[reid].type, sidx[teid].type,
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                                      constraints=cstrsdict.get(rdefeid, ()),
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                                      cardinality=card, order=ord, description=desc,
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                                      composite=c,  eid=rdefeid)
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        rdefs = schema.add_relation_def(rdef)
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        # rdefs can be None on duplicated relation definitions (e.g. symmetrics)
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        if rdefs is not None:
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            set_perms(rdefs, permsdict)
0
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    schema.infer_specialization_rules()
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    session.commit()
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    schema.reading_from_database = False
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def deserialize_ertype_permissions(session):
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    """return sect action:groups associations for the given
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    entity or relation schema with its eid, according to schema's
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    permissions stored in the database as [read|add|delete|update]_permission
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    relations between CWEType/CWRType and CWGroup entities
0
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    """
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    res = {}
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    for action in ('read', 'add', 'update', 'delete'):
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        rql = 'Any E,N WHERE G is CWGroup, G name N, E %s_permission G' % action
0
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        for eid, gname in session.execute(rql, build_descr=False):
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            res.setdefault(eid, {}).setdefault(action, []).append(gname)
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        rql = ('Any E,X,EXPR,V WHERE X is RQLExpression, X expression EXPR, '
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               'E %s_permission X, X mainvars V' % action)
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        for eid, expreid, expr, mainvars in session.execute(rql, build_descr=False):
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            # we don't know yet if it's a rql expr for an entity or a relation,
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            # so append a tuple to differentiate from groups and so we'll be
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            # able to instantiate it later
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            res.setdefault(eid, {}).setdefault(action, []).append( (expr, mainvars, expreid) )
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    return res
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def deserialize_rdef_constraints(session):
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    """return the list of relation definition's constraints as instances"""
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    res = {}
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    for rdefeid, ceid, ct, val in session.execute(
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        'Any E, X,TN,V WHERE E constrained_by X, X is CWConstraint, '
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        'X cstrtype T, T name TN, X value V', build_descr=False):
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        cstr = CONSTRAINTS[ct].deserialize(val)
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        cstr.eid = ceid
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        res.setdefault(rdefeid, []).append(cstr)
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    return res
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0
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def set_perms(erschema, permsdict):
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    """set permissions on the given erschema according to the permission
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    definition dictionary as built by deserialize_ertype_permissions for a
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    given erschema's eid
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    """
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    # reset erschema permissions here to avoid getting yams default anyway
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    erschema.permissions = dict((action, ()) for action in erschema.ACTIONS)
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    try:
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        thispermsdict = permsdict[erschema.eid]
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    except KeyError:
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        return
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    for action, somethings in thispermsdict.iteritems():
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        # XXX cw < 3.6.1 bw compat
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        if isinstance(erschema, schemamod.RelationDefinitionSchema) and erschema.final and action == 'add':
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            action = 'update'
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        erschema.permissions[action] = tuple(
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   223
            isinstance(p, tuple) and erschema.rql_expression(*p) or p
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   224
            for p in somethings)
0
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# schema / perms serialization ################################################
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def serialize_schema(cursor, schema):
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    """synchronize schema and permissions in the database according to
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    current schema
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    """
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    quiet = os.environ.get('APYCOT_ROOT')
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    if not quiet:
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        _title = '-> storing the schema in the database '
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        print _title,
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    execute = cursor.execute
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    eschemas = schema.entities()
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    if not quiet:
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        pb_size = (len(eschemas + schema.relations())
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                   + len(CONSTRAINTS)
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                   + len([x for x in eschemas if x.specializes()]))
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        pb = ProgressBar(pb_size, title=_title)
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    else:
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        pb = None
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    groupmap = group_mapping(cursor, interactive=False)
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    # serialize all entity types, assuring CWEType is serialized first for proper
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    # is / is_instance_of insertion
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    eschemas.remove(schema.eschema('CWEType'))
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    eschemas.insert(0, schema.eschema('CWEType'))
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    for eschema in eschemas:
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        execschemarql(execute, eschema, eschema2rql(eschema, groupmap))
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        if pb is not None:
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            pb.update()
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    # serialize constraint types
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    cstrtypemap = {}
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    rql = 'INSERT CWConstraintType X: X name %(ct)s'
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    for cstrtype in CONSTRAINTS:
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        if cstrtype == 'BoundConstraint':
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            continue # XXX deprecated in yams 0.29 / cw 3.8.1
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        cstrtypemap[cstrtype] = execute(rql, {'ct': unicode(cstrtype)},
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                                        build_descr=False)[0][0]
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        if pb is not None:
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            pb.update()
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    cstrtypemap['BoundConstraint'] = cstrtypemap['BoundaryConstraint']
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    # serialize relations
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    for rschema in schema.relations():
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        # skip virtual relations such as eid, has_text and identity
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        if rschema in VIRTUAL_RTYPES:
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            if pb is not None:
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                pb.update()
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            continue
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        execschemarql(execute, rschema, rschema2rql(rschema, addrdef=False))
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        if rschema.symmetric:
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            rdefs = [rdef for k, rdef in rschema.rdefs.iteritems()
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                     if (rdef.subject, rdef.object) == k]
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        else:
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            rdefs = rschema.rdefs.itervalues()
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        for rdef in rdefs:
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            execschemarql(execute, rdef,
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                          rdef2rql(rdef, cstrtypemap, groupmap))
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        if pb is not None:
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            pb.update()
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    for rql, kwargs in specialize2rql(schema):
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        execute(rql, kwargs, build_descr=False)
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        if pb is not None:
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            pb.update()
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    if not quiet:
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        print
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# high level serialization functions
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def execschemarql(execute, schema, rqls):
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    for rql, kwargs in rqls:
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        kwargs['x'] = schema.eid
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        rset = execute(rql, kwargs, build_descr=False)
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        if schema.eid is None:
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            schema.eid = rset[0][0]
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        else:
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            assert rset
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def erschema2rql(erschema, groupmap):
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    if isinstance(erschema, schemamod.EntitySchema):
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        return eschema2rql(erschema, groupmap=groupmap)
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    return rschema2rql(erschema, groupmap=groupmap)
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def specialize2rql(schema):
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    for eschema in schema.entities():
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        if eschema.final:
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            continue
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        for rql, kwargs in eschemaspecialize2rql(eschema):
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            yield rql, kwargs
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   314
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   315
# etype serialization
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   316
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   317
def eschema2rql(eschema, groupmap=None):
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    """return a list of rql insert statements to enter an entity schema
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   319
    in the database as an CWEType entity
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   320
    """
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   321
    relations, values = eschema_relations_values(eschema)
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   322
    # NOTE: 'specializes' relation can't be inserted here since there's no
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   323
    # way to make sure the parent type is inserted before the child type
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   324
    yield 'INSERT CWEType X: %s' % ','.join(relations) , values
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   325
    # entity permissions
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   326
    if groupmap is not None:
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   327
        for rql, args in _erperms2rql(eschema, groupmap):
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   328
            yield rql, args
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   329
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   330
def eschema_relations_values(eschema):
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   331
    values = _ervalues(eschema)
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   332
    relations = ['X %s %%(%s)s' % (attr, attr) for attr in sorted(values)]
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   333
    return relations, values
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   334
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   335
def eschemaspecialize2rql(eschema):
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   336
    specialized_type = eschema.specializes()
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   337
    if specialized_type:
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   338
        values = {'x': eschema.eid, 'et': specialized_type.eid}
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   339
        yield 'SET X specializes ET WHERE X eid %(x)s, ET eid %(et)s', values
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   340
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   341
def _ervalues(erschema):
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   342
    try:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   343
        type_ = unicode(erschema.type)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   344
    except UnicodeDecodeError, e:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   345
        raise Exception("can't decode %s [was %s]" % (erschema.type, e))
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   346
    try:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   347
        desc = unicode(erschema.description) or u''
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   348
    except UnicodeDecodeError, e:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   349
        raise Exception("can't decode %s [was %s]" % (erschema.description, e))
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   350
    return {
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parents:
diff changeset
   351
        'name': type_,
3689
deb13e88e037 follow yams 0.25 api changes to improve performance
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2955
diff changeset
   352
        'final': erschema.final,
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   353
        'description': desc,
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   354
        }
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   355
4763
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   356
# rtype serialization
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   357
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   358
def rschema2rql(rschema, cstrtypemap=None, addrdef=True, groupmap=None):
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   359
    """return a list of rql insert statements to enter a relation schema
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   360
    in the database as an CWRType entity
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   361
    """
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   362
    if rschema.type == 'has_text':
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   363
        return
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   364
    relations, values = rschema_relations_values(rschema)
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   365
    yield 'INSERT CWRType X: %s' % ','.join(relations), values
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   366
    if addrdef:
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   367
        assert cstrtypemap
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   368
        # sort for testing purpose
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   369
        for rdef in sorted(rschema.rdefs.itervalues(),
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   370
                           key=lambda x: (x.subject, x.object)):
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   371
            for rql, values in rdef2rql(rdef, cstrtypemap, groupmap):
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   372
                yield rql, values
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   373
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   374
def rschema_relations_values(rschema):
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   375
    values = _ervalues(rschema)
3689
deb13e88e037 follow yams 0.25 api changes to improve performance
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2955
diff changeset
   376
    values['final'] = rschema.final
4467
0e73d299730a fix long-waiting symetric typo: should be spelled symmetric. Add auto database migration on schema deserialization
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4312
diff changeset
   377
    values['symmetric'] = rschema.symmetric
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   378
    values['inlined'] = rschema.inlined
4719
aaed3f813ef8 kill dead/useless code as suggested by pylint
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4631
diff changeset
   379
    if isinstance(rschema.fulltext_container, str):
aaed3f813ef8 kill dead/useless code as suggested by pylint
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4631
diff changeset
   380
        values['fulltext_container'] = unicode(rschema.fulltext_container)
aaed3f813ef8 kill dead/useless code as suggested by pylint
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4631
diff changeset
   381
    else:
aaed3f813ef8 kill dead/useless code as suggested by pylint
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4631
diff changeset
   382
        values['fulltext_container'] = rschema.fulltext_container
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   383
    relations = ['X %s %%(%s)s' % (attr, attr) for attr in sorted(values)]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   384
    return relations, values
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   385
4763
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   386
# rdef serialization
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   387
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   388
def rdef2rql(rdef, cstrtypemap, groupmap=None):
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   389
    # don't serialize infered relations
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   390
    if rdef.infered:
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   391
        return
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   392
    relations, values = _rdef_values(rdef)
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   393
    relations.append('X relation_type ER,X from_entity SE,X to_entity OE')
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   394
    values.update({'se': rdef.subject.eid, 'rt': rdef.rtype.eid, 'oe': rdef.object.eid})
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   395
    if rdef.final:
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   396
        etype = 'CWAttribute'
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   397
    else:
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   398
        etype = 'CWRelation'
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   399
    yield 'INSERT %s X: %s WHERE SE eid %%(se)s,ER eid %%(rt)s,OE eid %%(oe)s' % (
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   400
        etype, ','.join(relations), ), values
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   401
    for rql, values in constraints2rql(cstrtypemap, rdef.constraints):
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   402
        yield rql, values
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   403
    # no groupmap means "no security insertion"
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   404
    if groupmap:
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   405
        for rql, args in _erperms2rql(rdef, groupmap):
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   406
            yield rql, args
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   407
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   408
def _rdef_values(rdef):
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   409
    amap = {'order': 'ordernum', 'default': 'defaultval'}
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   410
    values = {}
4763
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   411
    for prop, default in rdef.rproperty_defs(rdef.object).iteritems():
4003
b9436fe77c9e fix bad merge
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents: 3998
diff changeset
   412
        if prop in ('eid', 'constraints', 'uid', 'infered', 'permissions'):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   413
            continue
4763
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   414
        value = getattr(rdef, prop)
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   415
        # XXX type cast really necessary?
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   416
        if prop in ('indexed', 'fulltextindexed', 'internationalizable'):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   417
            value = bool(value)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   418
        elif prop == 'ordernum':
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   419
            value = int(value)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   420
        elif isinstance(value, str):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   421
            value = unicode(value)
4763
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   422
        if value is not None and prop == 'default':
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   423
            if value is False:
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   424
                value = u''
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   425
            if not isinstance(value, unicode):
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   426
                value = unicode(value)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   427
        values[amap.get(prop, prop)] = value
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   428
    relations = ['X %s %%(%s)s' % (attr, attr) for attr in sorted(values)]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   429
    return relations, values
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   430
4763
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   431
def constraints2rql(cstrtypemap, constraints, rdefeid=None):
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   432
    for constraint in constraints:
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   433
        values = {'ct': cstrtypemap[constraint.type()],
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   434
                  'value': unicode(constraint.serialize()),
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   435
                  'x': rdefeid} # when not specified, will have to be set by the caller
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   436
        yield 'INSERT CWConstraint X: X value %(value)s, X cstrtype CT, EDEF constrained_by X WHERE \
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4760
diff changeset
   437
CT eid %(ct)s, EDEF eid %(x)s', values
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   438
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   439
4011
394f853bb653 [migration] write migration instructions for permissions handling on relation definition
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 4010
diff changeset
   440
def _erperms2rql(erschema, groupmap):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   441
    """return rql insert statements to enter the entity or relation
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   442
    schema's permissions in the database as
1398
5fe84a5f7035 rename internal entity types to have CW prefix instead of E
sylvain.thenault@logilab.fr
parents: 0
diff changeset
   443
    [read|add|delete|update]_permission relations between CWEType/CWRType
5fe84a5f7035 rename internal entity types to have CW prefix instead of E
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    and CWGroup entities
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    """
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    for action in erschema.ACTIONS:
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        try:
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            grantedto = erschema.action_permissions(action)
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   449
        except KeyError:
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            # may occurs when modifying persistent schema
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            continue
457160bc8cfe when modifying a persistent schema, erschema may miss some permissions which wil trigger a key error, but we don't want to crash on such cases
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   452
        for group_or_rqlexpr in grantedto:
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   453
            if isinstance(group_or_rqlexpr, basestring):
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   454
                # group
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                try:
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                    yield ('SET X %s_permission Y WHERE Y eid %%(g)s, X eid %%(x)s' % action,
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394f853bb653 [migration] write migration instructions for permissions handling on relation definition
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   457
                           {'g': groupmap[group_or_rqlexpr]})
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   458
                except KeyError:
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   459
                    continue
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   460
            else:
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   461
                # rqlexpr
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   462
                rqlexpr = group_or_rqlexpr
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   463
                yield ('INSERT RQLExpression E: E expression %%(e)s, E exprtype %%(t)s, '
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                       'E mainvars %%(v)s, X %s_permission E WHERE X eid %%(x)s' % action,
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   465
                       {'e': unicode(rqlexpr.expression),
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   466
                        'v': unicode(rqlexpr.mainvars),
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   467
                        't': unicode(rqlexpr.__class__.__name__)})
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   469
# update functions
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   471
def updateeschema2rql(eschema, eid):
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    relations, values = eschema_relations_values(eschema)
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   473
    values['x'] = eid
81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
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   474
    yield 'SET %s WHERE X eid %%(x)s' % ','.join(relations), values
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diff changeset
   475
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81b0df087375 schema serialization optimization by using eids instead of type names. Heavy refactoring/cleanup on the way
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def updaterschema2rql(rschema, eid):
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   477
    relations, values = rschema_relations_values(rschema)
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   478
    values['x'] = eid
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   479
    yield 'SET %s WHERE X eid %%(x)s' % ','.join(relations), values
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   481
def updaterdef2rql(rdef, eid):
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   482
    relations, values = _rdef_values(rdef)
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diff changeset
   483
    values['x'] = eid
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diff changeset
   484
    yield 'SET %s WHERE X eid %%(x)s' % ','.join(relations), values