server/sources/native.py
author sylvain.thenault@logilab.fr
Wed, 11 Feb 2009 14:57:24 +0100
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child 973 da20ea051d6b
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update copyright
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"""Adapters for native cubicweb sources.
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:organization: Logilab
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:copyright: 2001-2008 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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from threading import Lock
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from mx.DateTime import now
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from logilab.common.cache import Cache
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from logilab.common.configuration import REQUIRED
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from logilab.common.adbh import get_adv_func_helper
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from indexer import get_indexer
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from cubicweb import UnknownEid, AuthenticationError, Binary, server
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from cubicweb.server.utils import crypt_password
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from cubicweb.server.sqlutils import SQLAdapterMixIn
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from cubicweb.server.rqlannotation import set_qdata
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from cubicweb.server.sources import AbstractSource
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from cubicweb.server.sources.rql2sql import SQLGenerator
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NONSYSTEM_ETYPES = set()
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NONSYSTEM_RELATIONS = set()
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class LogCursor(object):
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    def __init__(self, cursor):
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        self.cu = cursor
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    def execute(self, query, args=None):
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        """Execute a query.
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        it's a function just so that it shows up in profiling
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        """
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        if server.DEBUG:
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            print 'exec', query, args
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        try:
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            self.cu.execute(str(query), args)
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        except Exception, ex:
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            print "sql: %r\n args: %s\ndbms message: %r" % (
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                query, args, ex.args[0])
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            raise
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    def fetchall(self):
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        return self.cu.fetchall()
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    def fetchone(self):
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        return self.cu.fetchone()
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def make_schema(selected, solution, table, typemap):
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    """return a sql schema to store RQL query result"""
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    sql = []
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    varmap = {}
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    for i, term in enumerate(selected):
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        name = 'C%s' % i
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        key = term.as_string()
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        varmap[key] = '%s.%s' % (table, name)
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        ttype = term.get_type(solution)
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        try:
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            sql.append('%s %s' % (name, typemap[ttype]))
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        except KeyError:
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            # assert not schema(ttype).is_final()
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            sql.append('%s %s' % (name, typemap['Int']))
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    return ','.join(sql), varmap
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def _modified_sql(table, etypes):
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    # XXX protect against sql injection
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    if len(etypes) > 1:
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        restr = 'type IN (%s)' % ','.join("'%s'" % etype for etype in etypes)
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    else:
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        restr = "type='%s'" % etypes[0]
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    if table == 'entities':
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        attr = 'mtime'
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    else:
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        attr = 'dtime'
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    return 'SELECT type, eid FROM %s WHERE %s AND %s > %%(time)s' % (
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        table, restr, attr)
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class NativeSQLSource(SQLAdapterMixIn, AbstractSource):
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    """adapter for source using the native cubicweb schema (see below)
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    """
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    # need default value on class since migration doesn't call init method
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    has_deleted_entitites_table = True
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    passwd_rql = "Any P WHERE X is EUser, X login %(login)s, X upassword P"
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    auth_rql = "Any X WHERE X is EUser, X login %(login)s, X upassword %(pwd)s"
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    _sols = ({'X': 'EUser', 'P': 'Password'},)
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    options = (
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        ('db-driver',
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         {'type' : 'string',
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          'default': 'postgres',
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          'help': 'database driver (postgres or sqlite)',
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          'group': 'native-source', 'inputlevel': 1,
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          }),
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        ('db-host',
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         {'type' : 'string',
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          'default': '',
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          'help': 'database host',
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          'group': 'native-source', 'inputlevel': 1,
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          }),
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        ('db-name',
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         {'type' : 'string',
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          'default': REQUIRED,
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          'help': 'database name',
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          'group': 'native-source', 'inputlevel': 0,
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          }),
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        ('db-user',
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         {'type' : 'string',
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          'default': 'cubicweb',
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          'help': 'database user',
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          'group': 'native-source', 'inputlevel': 0,
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          }),
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        ('db-password',
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         {'type' : 'password',
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          'default': '',
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          'help': 'database password',
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          'group': 'native-source', 'inputlevel': 0,
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          }),
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        ('db-encoding',
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         {'type' : 'string',
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          'default': 'utf8',
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          'help': 'database encoding',
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          'group': 'native-source', 'inputlevel': 1,
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          }),
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    )
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    def __init__(self, repo, appschema, source_config, *args, **kwargs):
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        SQLAdapterMixIn.__init__(self, source_config)
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        AbstractSource.__init__(self, repo, appschema, source_config,
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                                *args, **kwargs)
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        # sql generator
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        self._rql_sqlgen = SQLGenerator(appschema, self.dbhelper,
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                                        self.encoding)
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        # full text index helper
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        self.indexer = get_indexer(self.dbdriver, self.encoding)
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        # advanced functionality helper
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        self.dbhelper.fti_uid_attr = self.indexer.uid_attr
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        self.dbhelper.fti_table = self.indexer.table
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        self.dbhelper.fti_restriction_sql = self.indexer.restriction_sql
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        self.dbhelper.fti_need_distinct_query = self.indexer.need_distinct
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        # sql queries cache
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        self._cache = Cache(repo.config['rql-cache-size'])
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        self._temp_table_data = {}
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        self._eid_creation_lock = Lock()
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    def reset_caches(self):
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        """method called during test to reset potential source caches"""
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        self._cache = Cache(self.repo.config['rql-cache-size'])
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    def clear_eid_cache(self, eid, etype):
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        """clear potential caches for the given eid"""
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        self._cache.pop('%s X WHERE X eid %s' % (etype, eid), None)
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        self._cache.pop('Any X WHERE X eid %s' % eid, None)
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    def sqlexec(self, session, sql, args=None):
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        """execute the query and return its result"""
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        cursor = session.pool[self.uri]
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        self.doexec(cursor, sql, args)
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        return self.process_result(cursor)
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   165
    
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    def init_creating(self):
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        # check full text index availibility
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        pool = self.repo._get_pool()
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        if not self.indexer.has_fti_table(pool['system']):
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            self.error('no text index table')
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            self.indexer = None
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        self.repo._free_pool(pool)
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    def init(self):
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        self.init_creating() 
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        pool = self.repo._get_pool()
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        # XXX cubicweb < 2.42 compat
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        if 'deleted_entities' in self.dbhelper.list_tables(pool['system']):
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            self.has_deleted_entitites_table = True
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        else:
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            self.has_deleted_entitites_table = False
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        self.repo._free_pool(pool)
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    # ISource interface #######################################################
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    def compile_rql(self, rql):
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        rqlst = self.repo.querier._rqlhelper.parse(rql)
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        rqlst.restricted_vars = ()
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        rqlst.children[0].solutions = self._sols
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        self.repo.querier.sqlgen_annotate(rqlst)
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        set_qdata(self.schema.rschema, rqlst, ())
0
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        return rqlst
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   193
    
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    def set_schema(self, schema):
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        """set the application'schema"""
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        self._cache = Cache(self.repo.config['rql-cache-size'])
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        self.cache_hit, self.cache_miss, self.no_cache = 0, 0, 0
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        self.schema = schema
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        try:
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            self._rql_sqlgen.schema = schema
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        except AttributeError:
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            pass # __init__
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        if 'EUser' in schema: # probably an empty schema if not true...
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            # rql syntax trees used to authenticate users
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            self._passwd_rqlst = self.compile_rql(self.passwd_rql)
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            self._auth_rqlst = self.compile_rql(self.auth_rql)
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   207
                
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    def support_entity(self, etype, write=False):
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        """return true if the given entity's type is handled by this adapter
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        if write is true, return true only if it's a RW support
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        """
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        return not etype in NONSYSTEM_ETYPES
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   213
    
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    def support_relation(self, rtype, write=False):
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        """return true if the given relation's type is handled by this adapter
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        if write is true, return true only if it's a RW support
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        """
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        if write:
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            return not rtype in NONSYSTEM_RELATIONS
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        # due to current multi-sources implementation, the system source
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        # can't claim not supporting a relation            
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        return True #not rtype == 'content_for'
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   223
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    def authenticate(self, session, login, password):
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        """return EUser eid for the given login/password if this account is
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        defined in this source, else raise `AuthenticationError`
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   227
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        two queries are needed since passwords are stored crypted, so we have
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        to fetch the salt first
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        """
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        args = {'login': login, 'pwd' : password}
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   232
        if password is not None:
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            rset = self.syntax_tree_search(session, self._passwd_rqlst, args)
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            try:
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   235
                pwd = rset[0][0]
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   236
            except IndexError:
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   237
                raise AuthenticationError('bad login')
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   238
            # passwords are stored using the bytea type, so we get a StringIO
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   239
            if pwd is not None:
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                args['pwd'] = crypt_password(password, pwd.getvalue()[:2])
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   241
        # get eid from login and (crypted) password
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   242
        rset = self.syntax_tree_search(session, self._auth_rqlst, args)
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diff changeset
   243
        try:
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   244
            return rset[0][0]
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   245
        except IndexError:
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   246
            raise AuthenticationError('bad password')
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diff changeset
   247
    
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   248
    def syntax_tree_search(self, session, union, args=None, cachekey=None, 
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   249
                           varmap=None):
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        """return result from this source for a rql query (actually from
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   251
        a rql syntax tree and a solution dictionary mapping each used
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   252
        variable to a possible type). If cachekey is given, the query
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   253
        necessary to fetch the results (but not the results themselves)
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   254
        may be cached using this key.
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   255
        """
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diff changeset
   256
        if server.DEBUG:
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diff changeset
   257
            print 'RQL FOR NATIVE SOURCE', self.uri, cachekey
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diff changeset
   258
            if varmap:
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   259
                print 'USING VARMAP', varmap
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diff changeset
   260
            print union.as_string()
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diff changeset
   261
            if args: print 'ARGS', args
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diff changeset
   262
            print 'SOLUTIONS', ','.join(str(s.solutions) for s in union.children)
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parents:
diff changeset
   263
        # remember number of actually selected term (sql generation may append some)
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parents:
diff changeset
   264
        if cachekey is None:
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parents:
diff changeset
   265
            self.no_cache += 1
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parents:
diff changeset
   266
            # generate sql query if we are able to do so (not supported types...)
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parents:
diff changeset
   267
            sql, query_args = self._rql_sqlgen.generate(union, args, varmap)
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parents:
diff changeset
   268
        else:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   269
            # sql may be cached
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parents:
diff changeset
   270
            try:
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diff changeset
   271
                sql, query_args = self._cache[cachekey]
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parents:
diff changeset
   272
                self.cache_hit += 1
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parents:
diff changeset
   273
            except KeyError:
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parents:
diff changeset
   274
                self.cache_miss += 1
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   275
                sql, query_args = self._rql_sqlgen.generate(union, args, varmap)
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parents:
diff changeset
   276
                self._cache[cachekey] = sql, query_args
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parents:
diff changeset
   277
        args = self.merge_args(args, query_args)
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parents:
diff changeset
   278
        cursor = session.pool[self.uri]
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   279
        assert isinstance(sql, basestring), repr(sql)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   280
        try:
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parents:
diff changeset
   281
            self.doexec(cursor, sql, args)
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parents:
diff changeset
   282
        except (self.dbapi_module.OperationalError,
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   283
                self.dbapi_module.InterfaceError):
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   284
            # FIXME: better detection of deconnection pb
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parents:
diff changeset
   285
            self.info("request failed '%s' ... retry with a new cursor", sql)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   286
            session.pool.reconnect(self)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   287
            cursor = session.pool[self.uri]
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   288
            self.doexec(cursor, sql, args)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   289
        res = self.process_result(cursor)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   290
        if server.DEBUG:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   291
            print '------>', res
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   292
        return res
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   293
                
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parents:
diff changeset
   294
    def flying_insert(self, table, session, union, args=None, varmap=None):
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parents:
diff changeset
   295
        """similar as .syntax_tree_search, but inserts data in the
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   296
        temporary table (on-the-fly if possible, eg for the system
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parents:
diff changeset
   297
        source whose the given cursor come from). If not possible,
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parents:
diff changeset
   298
        inserts all data by calling .executemany().
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parents:
diff changeset
   299
        """
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parents:
diff changeset
   300
        if self.uri == 'system':
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   301
            if server.DEBUG:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   302
                print 'FLYING RQL FOR SOURCE', self.uri
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   303
                if varmap:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   304
                    print 'USING VARMAP', varmap
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   305
                print union.as_string()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   306
                print 'SOLUTIONS', ','.join(str(s.solutions) for s in union.children)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   307
            # generate sql queries if we are able to do so
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   308
            sql, query_args = self._rql_sqlgen.generate(union, args, varmap)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   309
            query = 'INSERT INTO %s %s' % (table, sql.encode(self.encoding))
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   310
            self.doexec(session.pool[self.uri], query,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   311
                        self.merge_args(args, query_args))
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   312
# XXX commented until it's proved to be necessary
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   313
#             # XXX probably inefficient
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parents:
diff changeset
   314
#             tempdata = self._temp_table_data.setdefault(table, set())
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   315
#             cursor = session.pool[self.uri]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   316
#             cursor.execute('select * from %s' % table)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   317
#             for row in cursor.fetchall():
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   318
#                 print 'data', row
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   319
#                 tempdata.add(tuple(row))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   320
        else:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   321
            super(NativeSQLSource, self).flying_insert(table, session, union,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   322
                                                       args, varmap)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   323
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   324
    def _manual_insert(self, results, table, session):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   325
        """insert given result into a temporary table on the system source"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   326
        #print 'manual insert', table, results
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   327
        if not results:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   328
            return
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   329
        #cursor.execute('select * from %s'%table)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   330
        #assert len(cursor.fetchall())== 0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   331
        encoding = self.encoding
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   332
        # added chr to be sqlite compatible
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   333
        query_args = ['%%(%s)s' % i for i in xrange(len(results[0]))]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   334
        query = 'INSERT INTO %s VALUES(%s)' % (table, ','.join(query_args))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   335
        kwargs_list = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   336
#        tempdata = self._temp_table_data.setdefault(table, set())
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   337
        for row in results:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   338
            kwargs = {}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   339
            row = tuple(row)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   340
# XXX commented until it's proved to be necessary
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   341
#             if row in tempdata:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   342
#                 continue
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   343
#             tempdata.add(row)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   344
            for index, cell in enumerate(row):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   345
                if type(cell) is unicode:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   346
                    cell = cell.encode(encoding)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   347
                elif isinstance(cell, Binary):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   348
                    cell = self.binary(cell.getvalue())
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   349
                kwargs[str(index)] = cell
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   350
            kwargs_list.append(kwargs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   351
        self.doexecmany(session.pool[self.uri], query, kwargs_list)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   352
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   353
    def clean_temp_data(self, session, temptables):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   354
        """remove temporary data, usually associated to temporary tables"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   355
        if temptables:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   356
            cursor = session.pool[self.uri]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   357
            for table in temptables:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   358
                try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   359
                    self.doexec(cursor,'DROP TABLE %s' % table)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   360
                except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   361
                    pass
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   362
                try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   363
                    del self._temp_table_data[table]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   364
                except KeyError:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   365
                    continue
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   366
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   367
    def add_entity(self, session, entity):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   368
        """add a new entity to the source"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   369
        attrs = self.preprocess_entity(entity)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   370
        sql = self.sqlgen.insert(str(entity.e_schema), attrs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   371
        self.doexec(session.pool[self.uri], sql, attrs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   372
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   373
    def update_entity(self, session, entity):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   374
        """replace an entity in the source"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   375
        attrs = self.preprocess_entity(entity)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   376
        sql = self.sqlgen.update(str(entity.e_schema), attrs, ['eid'])
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   377
        self.doexec(session.pool[self.uri], sql, attrs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   378
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   379
    def delete_entity(self, session, etype, eid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   380
        """delete an entity from the source"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   381
        attrs = {'eid': eid}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   382
        sql = self.sqlgen.delete(etype, attrs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   383
        self.doexec(session.pool[self.uri], sql, attrs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   384
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   385
    def add_relation(self, session, subject, rtype, object):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   386
        """add a relation to the source"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   387
        attrs = {'eid_from': subject, 'eid_to': object}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   388
        sql = self.sqlgen.insert('%s_relation' % rtype, attrs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   389
        self.doexec(session.pool[self.uri], sql, attrs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   390
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   391
    def delete_relation(self, session, subject, rtype, object):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   392
        """delete a relation from the source"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   393
        rschema = self.schema.rschema(rtype)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   394
        if rschema.inlined:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   395
            etype = session.describe(subject)[0]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   396
            sql = 'UPDATE %s SET %s=NULL WHERE eid=%%(eid)s' % (etype, rtype)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   397
            attrs = {'eid' : subject}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   398
        else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   399
            attrs = {'eid_from': subject, 'eid_to': object}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   400
            sql = self.sqlgen.delete('%s_relation' % rtype, attrs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   401
        self.doexec(session.pool[self.uri], sql, attrs)    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   402
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   403
    def doexec(self, cursor, query, args=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   404
        """Execute a query.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   405
        it's a function just so that it shows up in profiling
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   406
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   407
        #t1 = time()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   408
        if server.DEBUG:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   409
            print 'exec', query, args
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   410
        #import sys
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   411
        #sys.stdout.flush()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   412
        # str(query) to avoid error if it's an unicode string
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   413
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   414
            cursor.execute(str(query), args)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   415
        except Exception, ex:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   416
            self.critical("sql: %r\n args: %s\ndbms message: %r",
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   417
                          query, args, ex.args[0])
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   418
            raise
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   419
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   420
    def doexecmany(self, cursor, query, args):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   421
        """Execute a query.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   422
        it's a function just so that it shows up in profiling
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   423
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   424
        #t1 = time()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   425
        if server.DEBUG:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   426
            print 'execmany', query, 'with', len(args), 'arguments'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   427
        #import sys
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   428
        #sys.stdout.flush()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   429
        # str(query) to avoid error if it's an unicode string
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   430
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   431
            cursor.executemany(str(query), args)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   432
        except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   433
            self.critical("sql many: %r\n args: %s", query, args)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   434
            raise
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   435
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   436
    # short cut to method requiring advanced db helper usage ##################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   437
            
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   438
    def create_index(self, session, table, column, unique=False):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   439
        cursor = LogCursor(session.pool[self.uri])
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   440
        self.dbhelper.create_index(cursor, table, column, unique)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   441
            
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   442
    def drop_index(self, session, table, column, unique=False):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   443
        cursor = LogCursor(session.pool[self.uri])
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   444
        self.dbhelper.drop_index(cursor, table, column, unique)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   445
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   446
    # system source interface #################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   447
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   448
    def eid_type_source(self, session, eid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   449
        """return a tuple (type, source, extid) for the entity with id <eid>"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   450
        sql = 'SELECT type, source, extid FROM entities WHERE eid=%s' % eid
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   451
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   452
            res = session.system_sql(sql).fetchone()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   453
        except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   454
            raise UnknownEid(eid)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   455
        if res is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   456
            raise UnknownEid(eid)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   457
        return res
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   458
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   459
    def extid2eid(self, session, source, lid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   460
        """get eid from a local id. An eid is attributed if no record is found"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   461
        cursor = session.system_sql('SELECT eid FROM entities WHERE '
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   462
                                    'extid=%(x)s AND source=%(s)s',
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   463
                                    # str() necessary with pg 8.3
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   464
                                    {'x': str(lid), 's': source.uri})
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   465
        # XXX testing rowcount cause strange bug with sqlite, results are there
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   466
        #     but rowcount is 0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   467
        #if cursor.rowcount > 0: 
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   468
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   469
            result = cursor.fetchone()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   470
            if result:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   471
                eid = result[0]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   472
                return eid            
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   473
        except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   474
            pass
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   475
        return None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   476
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   477
    def temp_table_def(self, selected, sol, table):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   478
        return make_schema(selected, sol, table, self.dbhelper.TYPE_MAPPING)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   479
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   480
    def create_temp_table(self, session, table, schema):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   481
        # we don't want on commit drop, this may cause problem when
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   482
        # running with an ldap source, and table will be deleted manually any way
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   483
        # on commit
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   484
        sql = self.dbhelper.sql_temporary_table(table, schema, False)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   485
        self.doexec(session.pool[self.uri], sql)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   486
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   487
    def create_eid(self, session):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   488
        self._eid_creation_lock.acquire()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   489
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   490
            cursor = session.pool[self.uri]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   491
            for sql in self.dbhelper.sqls_increment_sequence('entities_id_seq'):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   492
                self.doexec(cursor, sql)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   493
            return cursor.fetchone()[0]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   494
        finally:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   495
            self._eid_creation_lock.release()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   496
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   497
    def add_info(self, session, entity, source, extid=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   498
        """add type and source info for an eid into the system table"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   499
        # begin by inserting eid/type/source/extid into the entities table
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   500
        attrs = {'type': str(entity.e_schema), 'eid': entity.eid,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   501
                 'extid': extid, 'source': source.uri, 'mtime': now()}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   502
        session.system_sql(self.sqlgen.insert('entities', attrs), attrs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   503
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   504
    def delete_info(self, session, eid, etype, uri, extid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   505
        """delete system information on deletion of an entity by transfering
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   506
        record from the entities table to the deleted_entities table
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   507
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   508
        attrs = {'eid': eid}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   509
        session.system_sql(self.sqlgen.delete('entities', attrs), attrs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   510
        if self.has_deleted_entitites_table:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   511
            attrs = {'type': etype, 'eid': eid, 'extid': extid,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   512
                     'source': uri, 'dtime': now()}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   513
            session.system_sql(self.sqlgen.insert('deleted_entities', attrs), attrs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   514
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   515
    def fti_unindex_entity(self, session, eid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   516
        """remove text content for entity with the given eid from the full text
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   517
        index
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   518
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   519
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   520
            self.indexer.cursor_unindex_object(eid, session.pool['system'])
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   521
        except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   522
            if self.indexer is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   523
                self.exception('error while unindexing %s', eid)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   524
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   525
    def fti_index_entity(self, session, entity):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   526
        """add text content of a created/modified entity to the full text index
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   527
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   528
        self.info('reindexing %r', entity.eid)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   529
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   530
            self.indexer.cursor_reindex_object(entity.eid, entity,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   531
                                               session.pool['system'])
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   532
        except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   533
            if self.indexer is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   534
                self.exception('error while reindexing %s', entity)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   535
        # update entities.mtime
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   536
        attrs = {'eid': entity.eid, 'mtime': now()}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   537
        session.system_sql(self.sqlgen.update('entities', attrs, ['eid']), attrs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   538
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   539
    def modified_entities(self, session, etypes, mtime):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   540
        """return a 2-uple:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   541
        * list of (etype, eid) of entities of the given types which have been
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   542
          modified since the given timestamp (actually entities whose full text
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   543
          index content has changed)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   544
        * list of (etype, eid) of entities of the given types which have been
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   545
          deleted since the given timestamp
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   546
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   547
        modsql = _modified_sql('entities', etypes)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   548
        cursor = session.system_sql(modsql, {'time': mtime})
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   549
        modentities = cursor.fetchall()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   550
        delsql = _modified_sql('deleted_entities', etypes)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   551
        cursor = session.system_sql(delsql, {'time': mtime})
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   552
        delentities = cursor.fetchall()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   553
        return modentities, delentities
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   554
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   555
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   556
def sql_schema(driver):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   557
    helper = get_adv_func_helper(driver)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   558
    schema = """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   559
/* Create the repository's system database */
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   560
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   561
%s
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   562
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   563
CREATE TABLE entities (
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   564
  eid INTEGER PRIMARY KEY NOT NULL,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   565
  type VARCHAR(64) NOT NULL,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   566
  source VARCHAR(64) NOT NULL,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   567
  mtime TIMESTAMP NOT NULL,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   568
  extid VARCHAR(256)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   569
);
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   570
CREATE INDEX entities_type_idx ON entities(type);
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   571
CREATE INDEX entities_mtime_idx ON entities(mtime);
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   572
CREATE INDEX entities_extid_idx ON entities(extid);
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   573
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   574
CREATE TABLE deleted_entities (
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   575
  eid INTEGER PRIMARY KEY NOT NULL,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   576
  type VARCHAR(64) NOT NULL,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   577
  source VARCHAR(64) NOT NULL,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   578
  dtime TIMESTAMP NOT NULL,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   579
  extid VARCHAR(256)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   580
);
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   581
CREATE INDEX deleted_entities_type_idx ON deleted_entities(type);
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   582
CREATE INDEX deleted_entities_dtime_idx ON deleted_entities(dtime);
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   583
CREATE INDEX deleted_entities_extid_idx ON deleted_entities(extid);
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   584
""" % helper.sql_create_sequence('entities_id_seq')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   585
    return schema
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   586
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   587
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   588
def sql_drop_schema(driver):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   589
    helper = get_adv_func_helper(driver)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   590
    return """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   591
%s
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   592
DROP TABLE entities;
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   593
DROP TABLE deleted_entities;
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   594
""" % helper.sql_drop_sequence('entities_id_seq')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   595
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   596
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   597
def grant_schema(user, set_owner=True):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   598
    result = ''
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   599
    if set_owner:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   600
        result = 'ALTER TABLE entities OWNER TO %s;\n' % user
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   601
        result += 'ALTER TABLE deleted_entities OWNER TO %s;\n' % user
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   602
        result += 'ALTER TABLE entities_id_seq OWNER TO %s;\n' % user
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   603
    result += 'GRANT ALL ON entities TO %s;\n' % user
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   604
    result += 'GRANT ALL ON deleted_entities TO %s;\n' % user
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   605
    result += 'GRANT ALL ON entities_id_seq TO %s;\n' % user
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   606
    return result