##############################################################################
#
# Copyright (c) 2002 Zope Corporation and Contributors. All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE
#
##############################################################################
""" ZCatalog product

$Id: ZCatalog.py 94458 2009-01-02 19:29:55Z tseaver $
"""

import logging
import sys
import string
import time
import urllib
from warnings import warn

from AccessControl.DTML import RestrictedDTML
from AccessControl.Permission import name_trans
from AccessControl.Permissions import manage_zcatalog_entries
from AccessControl.Permissions import manage_zcatalog_indexes
from AccessControl.Permissions import search_zcatalog
from AccessControl.SecurityInfo import ClassSecurityInfo
from Acquisition import Implicit
from App.class_init import InitializeClass
from App.Dialogs import MessageDialog
from App.special_dtml import DTMLFile
from DateTime.DateTime import DateTime
from DocumentTemplate.DT_Util import InstanceDict
from DocumentTemplate.DT_Util import TemplateDict
from DocumentTemplate.DT_Util import Eval
from OFS.Folder import Folder
from OFS.ObjectManager import ObjectManager
from Persistence import Persistent
from Products.PluginIndexes.interfaces import IPluggableIndex
import transaction
from ZODB.POSException import ConflictError
from zope.interface import implements

from Products.ZCatalog.Catalog import Catalog, CatalogError
from Products.ZCatalog.interfaces import IZCatalog
from Products.ZCatalog.ProgressHandler import ZLogHandler
from Products.ZCatalog.ZCatalogIndexes import ZCatalogIndexes

LOG = logging.getLogger('Zope.ZCatalog')

manage_addZCatalogForm = DTMLFile('dtml/addZCatalog', globals())

def manage_addZCatalog(self, id, title,
                       vocab_id=None, # Deprecated
                       REQUEST=None):
    """Add a ZCatalog object
    """
    id=str(id)
    title=str(title)
    c=ZCatalog(id, title, vocab_id, self)
    self._setObject(id, c)
    if REQUEST is not None:
        return self.manage_main(self, REQUEST,update_menu=1)


class ZCatalog(Folder, Persistent, Implicit):
    """ZCatalog object

    A ZCatalog contains arbirary index like references to Zope
    objects.  ZCatalog's can index either 'Field' values of object, or
    'Text' values.

    ZCatalog does not store references to the objects themselves, but
    rather to a unique identifier that defines how to get to the
    object.  In Zope, this unique idenfier is the object's relative
    path to the ZCatalog (since two Zope object's cannot have the same
    URL, this is an excellent unique qualifier in Zope).

    Most of the dirty work is done in the _catalog object, which is an
    instance of the Catalog class.  An interesting feature of this
    class is that it is not Zope specific.  You can use it in any
    Python program to catalog objects.
    """

    implements(IZCatalog)

    security = ClassSecurityInfo()
    security.setPermissionDefault(manage_zcatalog_entries, ('Manager',))
    security.setPermissionDefault(manage_zcatalog_indexes, ('Manager',))
    security.setPermissionDefault(search_zcatalog, ('Anonymous', 'Manager'))

    meta_type = "ZCatalog"
    icon='misc_/ZCatalog/ZCatalog.gif'

    manage_options = (
        {'label': 'Contents',           # TAB: Contents
         'action': 'manage_main',
         'help': ('OFSP','ObjectManager_Contents.stx')},
        {'label': 'Catalog',            # TAB: Cataloged Objects
         'action': 'manage_catalogView',
         'help':('ZCatalog','ZCatalog_Cataloged-Objects.stx')},
        {'label': 'Properties',         # TAB: Properties
         'action': 'manage_propertiesForm',
         'help': ('OFSP','Properties.stx')},
        {'label': 'Indexes',            # TAB: Indexes
         'action': 'manage_catalogIndexes',
         'help': ('ZCatalog','ZCatalog_Indexes.stx')},
        {'label': 'Metadata',           # TAB: Metadata
         'action': 'manage_catalogSchema',
         'help':('ZCatalog','ZCatalog_MetaData-Table.stx')},
        {'label': 'Find Objects',       # TAB: Find Objects
         'action': 'manage_catalogFind',
         'help':('ZCatalog','ZCatalog_Find-Items-to-ZCatalog.stx')},
        {'label': 'Advanced',           # TAB: Advanced
         'action': 'manage_catalogAdvanced',
         'help':('ZCatalog','ZCatalog_Advanced.stx')},
        {'label': 'Undo',               # TAB: Undo
         'action': 'manage_UndoForm',
         'help': ('OFSP','Undo.stx')},
        {'label': 'Security',           # TAB: Security
         'action': 'manage_access',
         'help': ('OFSP','Security.stx')},
        {'label': 'Ownership',          # TAB: Ownership
         'action': 'manage_owner',
         'help': ('OFSP','Ownership.stx'),}
        )

    security.declareProtected(manage_zcatalog_entries, 'manage_main')

    security.declareProtected(search_zcatalog, 'all_meta_types')

    manage_catalogAddRowForm = DTMLFile('dtml/catalogAddRowForm', globals())

    security.declareProtected(manage_zcatalog_entries, 'manage_catalogView')
    manage_catalogView = DTMLFile('dtml/catalogView',globals())

    security.declareProtected(manage_zcatalog_entries, 'manage_catalogFind')
    manage_catalogFind = DTMLFile('dtml/catalogFind',globals())

    security.declareProtected(manage_zcatalog_entries, 'manage_catalogSchema')
    manage_catalogSchema = DTMLFile('dtml/catalogSchema', globals())

    security.declareProtected(manage_zcatalog_entries, 'manage_catalogIndexes')
    manage_catalogIndexes = DTMLFile('dtml/catalogIndexes', globals())

    security.declareProtected(manage_zcatalog_entries,
                              'manage_catalogAdvanced')
    manage_catalogAdvanced = DTMLFile('dtml/catalogAdvanced', globals())

    security.declareProtected(manage_zcatalog_entries,
                              'manage_objectInformation')
    manage_objectInformation = DTMLFile('dtml/catalogObjectInformation',
                                        globals())

    Indexes = ZCatalogIndexes()

    threshold=10000
    _v_total=0
    _v_transaction = None

    def __init__(self, id, title='', vocab_id=None, container=None):
        # ZCatalog no longer cares about vocabularies
        # so the vocab_id argument is ignored (Casey)

        if container is not None:
            self=self.__of__(container)
        self.id=id
        self.title=title

        # vocabulary and vocab_id are left for backwards
        # compatibility only, they are not used anymore
        self.vocabulary = None
        self.vocab_id = ''

        self.threshold = 10000
        self._v_total = 0

        self._catalog = Catalog()
        self._migrated_280 = True

    def __len__(self):
        # Perform a migration of _catalog.__len__ to _catalog._length
        # to avoid with new-style class caching issues (see #1332)
        self._catalog.migrate__len__()
        return len(self._catalog)


    # getVocabulary method is no longer supported
    # def getVocabulary(self):
    #   """ more ack! """
    #   return getattr(self, self.vocab_id)


    def manage_edit(self, RESPONSE, URL1, threshold=1000, REQUEST=None):
        """ edit the catalog """
        if type(threshold) is not type(1):
            threshold=int(threshold)
        self.threshold = threshold

        RESPONSE.redirect(
            URL1 + '/manage_main?manage_tabs_message=Catalog%20Changed')


    def manage_subbingToggle(self, REQUEST, RESPONSE, URL1):
        """ toggle subtransactions """
        if self.threshold:
            self.threshold = None
        else:
            self.threshold = 10000

        RESPONSE.redirect(
            URL1 +
            '/manage_catalogAdvanced?manage_tabs_message=Catalog%20Changed')

    security.declareProtected(manage_zcatalog_entries, 'manage_catalogObject')
    def manage_catalogObject(self, REQUEST, RESPONSE, URL1, urls=None):
        """ index Zope object(s) that 'urls' point to """
        if urls:
            if isinstance(urls, str):
                urls=(urls,)

            for url in urls:
                obj = self.resolve_path(url)
                if obj is None and hasattr(self, 'REQUEST'):
                    obj = self.resolve_url(url, REQUEST)
                if obj is not None:
                    self.catalog_object(obj, url)

        RESPONSE.redirect(
            URL1 +
            '/manage_catalogView?manage_tabs_message=Object%20Cataloged')


    security.declareProtected(manage_zcatalog_entries,
                              'manage_uncatalogObject')
    def manage_uncatalogObject(self, REQUEST, RESPONSE, URL1, urls=None):
        """ removes Zope object(s) 'urls' from catalog """

        if urls:
            if isinstance(urls, str):
                urls=(urls,)

            for url in urls:
                self.uncatalog_object(url)

        RESPONSE.redirect(
            URL1 +
            '/manage_catalogView?manage_tabs_message=Object%20Uncataloged')


    security.declareProtected(manage_zcatalog_entries, 'manage_catalogReindex')
    def manage_catalogReindex(self, REQUEST, RESPONSE, URL1):
        """ clear the catalog, then re-index everything """

        elapse = time.time()
        c_elapse = time.clock()

        pgthreshold = self._getProgressThreshold()
        handler = (pgthreshold > 0) and ZLogHandler(pgthreshold) or None
        self.refreshCatalog(clear=1, pghandler=handler)

        elapse = time.time() - elapse
        c_elapse = time.clock() - c_elapse

        RESPONSE.redirect(
            URL1 +
            '/manage_catalogAdvanced?manage_tabs_message=' +
            urllib.quote('Catalog Updated \n'
                         'Total time: %s\n'
                         'Total CPU time: %s' % (`elapse`, `c_elapse`)))


    security.declareProtected(manage_zcatalog_entries, 'refreshCatalog')
    def refreshCatalog(self, clear=0, pghandler=None):
        """ re-index everything we can find """

        cat = self._catalog
        paths = cat.paths.values()
        if clear:
            paths = tuple(paths)
            cat.clear()

        num_objects = len(paths)
        if pghandler:
            pghandler.init('Refreshing catalog: %s' % self.absolute_url(1), num_objects)

        for i in xrange(num_objects):
            if pghandler: pghandler.report(i)

            p = paths[i]
            obj = self.resolve_path(p)
            if obj is None:
                obj = self.resolve_url(p, self.REQUEST)
            if obj is not None:
                try:
                    self.catalog_object(obj, p, pghandler=pghandler)
                except ConflictError:
                    raise
                except:
                    LOG.error('Recataloging object at %s failed' % p,
                              exc_info=sys.exc_info())

        if pghandler: pghandler.finish()

    security.declareProtected(manage_zcatalog_entries, 'manage_catalogClear')
    def manage_catalogClear(self, REQUEST=None, RESPONSE=None, URL1=None):
        """ clears the whole enchilada """
        self._catalog.clear()

        if REQUEST and RESPONSE:
            RESPONSE.redirect(
              URL1 +
              '/manage_catalogAdvanced?manage_tabs_message=Catalog%20Cleared')


    security.declareProtected(manage_zcatalog_entries,
                              'manage_catalogFoundItems')
    def manage_catalogFoundItems(self, REQUEST, RESPONSE, URL2, URL1,
                                 obj_metatypes=None,
                                 obj_ids=None, obj_searchterm=None,
                                 obj_expr=None, obj_mtime=None,
                                 obj_mspec=None, obj_roles=None,
                                 obj_permission=None):

        """ Find object according to search criteria and Catalog them
        """

        elapse = time.time()
        c_elapse = time.clock()

        words = 0
        obj = REQUEST.PARENTS[1]
        path = '/'.join(obj.getPhysicalPath())


        results = self.ZopeFindAndApply(obj,
                                        obj_metatypes=obj_metatypes,
                                        obj_ids=obj_ids,
                                        obj_searchterm=obj_searchterm,
                                        obj_expr=obj_expr,
                                        obj_mtime=obj_mtime,
                                        obj_mspec=obj_mspec,
                                        obj_permission=obj_permission,
                                        obj_roles=obj_roles,
                                        search_sub=1,
                                        REQUEST=REQUEST,
                                        apply_func=self.catalog_object,
                                        apply_path=path)

        elapse = time.time() - elapse
        c_elapse = time.clock() - c_elapse

        RESPONSE.redirect(
            URL1 +
            '/manage_catalogView?manage_tabs_message=' +
            urllib.quote('Catalog Updated\n'
                         'Total time: %s\n'
                         'Total CPU time: %s'
                         % (`elapse`, `c_elapse`))
            )


    security.declareProtected(manage_zcatalog_entries, 'manage_addColumn')
    def manage_addColumn(self, name, REQUEST=None, RESPONSE=None, URL1=None):
        """ add a column """
        self.addColumn(name)

        if REQUEST and RESPONSE:
            RESPONSE.redirect(
                URL1 +
                '/manage_catalogSchema?manage_tabs_message=Column%20Added')


    security.declareProtected(manage_zcatalog_entries, 'manage_delColumn')
    def manage_delColumn(self, names, REQUEST=None, RESPONSE=None, URL1=None):
        """ delete a column or some columns """
        if isinstance(names, str):
            names = (names,)

        for name in names:
            self.delColumn(name)

        if REQUEST and RESPONSE:
            RESPONSE.redirect(
                URL1 +
                '/manage_catalogSchema?manage_tabs_message=Column%20Deleted')


    security.declareProtected(manage_zcatalog_entries, 'manage_addIndex')
    def manage_addIndex(self, name, type, extra=None,
                        REQUEST=None, RESPONSE=None, URL1=None):
        """add an index """
        self.addIndex(name, type,extra)

        if REQUEST and RESPONSE:
            RESPONSE.redirect(
                URL1 +
                '/manage_catalogIndexes?manage_tabs_message=Index%20Added')


    security.declareProtected(manage_zcatalog_entries, 'manage_delIndex')
    def manage_delIndex(self, ids=None, REQUEST=None, RESPONSE=None,
        URL1=None):
        """ delete an index or some indexes """
        if not ids:
            return MessageDialog(title='No items specified',
                message='No items were specified!',
                action = "./manage_catalogIndexes",)

        if isinstance(ids, str):
            ids = (ids,)

        for name in ids:
            self.delIndex(name)

        if REQUEST and RESPONSE:
            RESPONSE.redirect(
                URL1 +
                '/manage_catalogIndexes?manage_tabs_message=Index%20Deleted')


    security.declareProtected(manage_zcatalog_entries, 'manage_clearIndex')
    def manage_clearIndex(self, ids=None, REQUEST=None, RESPONSE=None,
        URL1=None):
        """ clear an index or some indexes """
        if not ids:
            return MessageDialog(title='No items specified',
                message='No items were specified!',
                action = "./manage_catalogIndexes",)

        if isinstance(ids, str):
            ids = (ids,)

        for name in ids:
            self.clearIndex(name)

        if REQUEST and RESPONSE:
            RESPONSE.redirect(
                URL1 +
                '/manage_catalogIndexes?manage_tabs_message=Index%20Cleared')


    def reindexIndex(self, name, REQUEST, pghandler=None):
        if isinstance(name, str):
            name = (name,)

        paths = self._catalog.uids.keys()

        i = 0
        if pghandler:
            pghandler.init('reindexing %s' % name, len(paths))

        for p in paths:
            i+=1
            if pghandler: pghandler.report(i)

            obj = self.resolve_path(p)
            if obj is None:
                obj = self.resolve_url(p, REQUEST)
            if obj is None:
                LOG.error('reindexIndex could not resolve '
                          'an object from the uid %r.' % p)
            else:
                # don't update metadata when only reindexing a single
                # index via the UI
                try:
                    self.catalog_object(obj, p, idxs=name,
                                        update_metadata=0, pghandler=pghandler)
                except TypeError:
                    # Fall back to Zope 2.6.2 interface. This is necessary for
                    # products like CMF 1.4.2 and earlier that subclass from
                    # ZCatalog and don't support the update_metadata argument.
                    # May be removed some day.
                    warn('catalog_object interface of %s not up to date'
                         % self.__class__.__name__,
                         DeprecationWarning)
                    try:
                        self.catalog_object(obj, p, idxs=name, pghandler=pghandler)
                    except TypeError:
                        # Fall back to pre-Zope 2.8 interface where there is no
                        # 'pghandler' argument.
                        warn('catalog_object interface of %s not up to date'
                             % self.__class__.__name__,
                             DeprecationWarning)
                        self.catalog_object(obj, p, idxs=name)

        if pghandler:
            pghandler.finish()

    security.declareProtected(manage_zcatalog_entries, 'manage_reindexIndex')
    def manage_reindexIndex(self, ids=None, REQUEST=None, RESPONSE=None,
                            URL1=None):
        """Reindex indexe(s) from a ZCatalog"""
        if not ids:
            return MessageDialog(title='No items specified',
                message='No items were specified!',
                action = "./manage_catalogIndexes",)

        pgthreshold = self._getProgressThreshold()
        handler = (pgthreshold > 0) and ZLogHandler(pgthreshold) or None
        self.reindexIndex(ids, REQUEST, handler)

        if REQUEST and RESPONSE:
            RESPONSE.redirect(
                URL1 +
                '/manage_catalogIndexes'
                '?manage_tabs_message=Reindexing%20Performed')


    security.declareProtected(manage_zcatalog_entries, 'catalog_object')
    def catalog_object(self, obj, uid=None, idxs=None, update_metadata=1, pghandler=None):
        """ wrapper around catalog """

        if uid is None:
            try: uid = obj.getPhysicalPath
            except AttributeError:
                raise CatalogError(
                    "A cataloged object must support the 'getPhysicalPath' "
                    "method if no unique id is provided when cataloging"
                    )
            else: uid='/'.join(uid())
        elif not isinstance(uid,str):
            raise CatalogError('The object unique id must be a string.')

        self._catalog.catalogObject(obj, uid, None, idxs,
                                    update_metadata=update_metadata)
        # None passed in to catalogObject as third argument indicates
        # that we shouldn't try to commit subtransactions within any
        # indexing code.  We throw away the result of the call to
        # catalogObject (which is a word count), because it's
        # worthless to us here.

        if self.threshold is not None:
            # figure out whether or not to commit a subtransaction.
            t = id(transaction.get())
            if t != self._v_transaction:
                self._v_total = 0
            self._v_transaction = t
            self._v_total = self._v_total + 1
            # increment the _v_total counter for this thread only and get
            # a reference to the current transaction.
            # the _v_total counter is zeroed if we notice that we're in
            # a different transaction than the last one that came by.
            # self.threshold represents the number of times that
            # catalog_object needs to be called in order for the catalog
            # to commit a subtransaction.  The semantics here mean that
            # we should commit a subtransaction if our threshhold is
            # exceeded within the boundaries of the current transaction.
            if self._v_total > self.threshold:
                transaction.savepoint(optimistic=True)
                self._p_jar.cacheGC()
                self._v_total = 0
                if pghandler:
                    pghandler.info('commiting subtransaction')

    security.declareProtected(manage_zcatalog_entries, 'uncatalog_object')
    def uncatalog_object(self, uid):
        """Wrapper around catalog """
        self._catalog.uncatalogObject(uid)

    security.declareProtected(search_zcatalog, 'uniqueValuesFor')
    def uniqueValuesFor(self, name):
        """Return the unique values for a given FieldIndex """
        return self._catalog.uniqueValuesFor(name)

    security.declareProtected(search_zcatalog, 'getpath')
    def getpath(self, rid):
        """Return the path to a cataloged object given a 'data_record_id_'
        """
        return self._catalog.paths[rid]

    def getrid(self, path, default=None):
        """Return 'data_record_id_' the to a cataloged object given a 'path'
        """
        return self._catalog.uids.get(path, default)

    security.declareProtected(search_zcatalog, 'getobject')
    def getobject(self, rid, REQUEST=None):
        """Return a cataloged object given a 'data_record_id_'
        """
        return self.aq_parent.unrestrictedTraverse(self.getpath(rid))

    def getMetadataForUID(self, uid):
        """return the correct metadata given the uid, usually the path"""
        rid = self._catalog.uids[uid]
        return self._catalog.getMetadataForRID(rid)

    def getIndexDataForUID(self, uid):
        """return the current index contents given the uid, usually the path"""
        rid = self._catalog.uids[uid]
        return self._catalog.getIndexDataForRID(rid)

    def getMetadataForRID(self, rid):
        """return the correct metadata for the cataloged record id"""
        return self._catalog.getMetadataForRID(int(rid))

    def getIndexDataForRID(self, rid):
        """return the current index contents for the specific rid"""
        return self._catalog.getIndexDataForRID(rid)

    security.declareProtected(search_zcatalog, 'schema')
    def schema(self):
        return self._catalog.schema.keys()

    security.declareProtected(search_zcatalog, 'indexes')
    def indexes(self):
        return self._catalog.indexes.keys()

    security.declareProtected(search_zcatalog, 'index_objects')
    def index_objects(self):
        # This method returns unwrapped indexes!
        # You should probably use getIndexObjects instead
        return self._catalog.indexes.values()

    security.declareProtected(manage_zcatalog_indexes, 'getIndexObjects')
    def getIndexObjects(self):
        # Return a list of wrapped(!) indexes
        getIndex = self._catalog.getIndex
        return [getIndex(name) for name in self.indexes()]

    def _searchable_arguments(self):
        r = {}
        n={'optional':1}
        for name in self._catalog.indexes.keys():
            r[name]=n
        return r

    def _searchable_result_columns(self):
        r = []
        for name in self._catalog.schema.keys():
            i = {}
            i['name'] = name
            i['type'] = 's'
            i['parser'] = str
            i['width'] = 8
            r.append(i)
        r.append({'name': 'data_record_id_',
                  'type': 's',
                  'parser': str,
                  'width': 8})
        return r

    security.declareProtected(search_zcatalog, 'searchResults')
    def searchResults(self, REQUEST=None, used=None, **kw):
        """Search the catalog

        Search terms can be passed in the REQUEST or as keyword
        arguments.

        The used argument is now deprecated and ignored
        """

        return self._catalog.searchResults(REQUEST, used, **kw)

    security.declareProtected(search_zcatalog, '__call__')
    __call__=searchResults

    security.declareProtected(search_zcatalog, 'search')
    def search(
        self, query_request, sort_index=None, reverse=0, limit=None, merge=1):
        """Programmatic search interface, use for searching the catalog from
        scripts.

        query_request: Dictionary containing catalog query
        sort_index:    Name of sort index
        reverse:       Reverse sort order?
        limit:         Limit sorted result count (optimization hint)
        merge:         Return merged results (like searchResults) or raw
                       results for later merging.
        """
        if sort_index is not None:
            sort_index = self._catalog.indexes[sort_index]
        return self._catalog.search(
            query_request, sort_index, reverse, limit, merge)

## this stuff is so the find machinery works

    meta_types=() # Sub-object types that are specific to this object

    # Dont need this anymore -- we inherit from object manager
    #def all_meta_types(self):
    #    pmt=()
    #    if hasattr(self, '_product_meta_types'): pmt=self._product_meta_types
    #    elif hasattr(self, 'aq_acquire'):
    #        try: pmt=self.aq_acquire('_product_meta_types')
    #        except AttributeError:  pass
    #    return self.meta_types+Products.meta_types+pmt

    security.declareProtected(search_zcatalog, 'valid_roles')
    def valid_roles(self):
        "Return list of valid roles"
        obj=self
        dict={}
        dup =dict.has_key
        x=0
        while x < 100:
            if hasattr(obj, '__ac_roles__'):
                roles=obj.__ac_roles__
                for role in roles:
                    if not dup(role):
                        dict[role]=1
            if not hasattr(obj, 'aq_parent'):
                break
            obj=obj.aq_parent
            x=x+1
        roles=dict.keys()
        roles.sort()
        return roles

    def ZopeFindAndApply(self, obj, obj_ids=None, obj_metatypes=None,
                         obj_searchterm=None, obj_expr=None,
                         obj_mtime=None, obj_mspec=None,
                         obj_permission=None, obj_roles=None,
                         search_sub=0,
                         REQUEST=None, result=None, pre='',
                         apply_func=None, apply_path=''):
        """Zope Find interface and apply

        This is a *great* hack.  Zope find just doesn't do what we
        need here; the ability to apply a method to all the objects
        *as they're found* and the need to pass the object's path into
        that method.

        """

        if result is None:
            result=[]

            if obj_metatypes and 'all' in obj_metatypes:
                obj_metatypes=None

            if obj_mtime and type(obj_mtime)==type('s'):
                obj_mtime=DateTime(obj_mtime).timeTime()

            if obj_permission:
                obj_permission=p_name(obj_permission)

            if obj_roles and type(obj_roles) is type('s'):
                obj_roles=[obj_roles]

            if obj_expr:
                # Setup expr machinations
                md=td()
                obj_expr=(Eval(obj_expr), md, md._push, md._pop)

        base=obj
        if hasattr(obj, 'aq_base'):
            base=obj.aq_base

        if not hasattr(base, 'objectItems'):
            return result
        try:    items=obj.objectItems()
        except: return result

        try: add_result=result.append
        except:
            raise AttributeError, `result`

        for id, ob in items:
            if pre: p="%s/%s" % (pre, id)
            else:   p=id

            dflag=0
            if hasattr(ob, '_p_changed') and (ob._p_changed == None):
                dflag=1

            if hasattr(ob, 'aq_base'):
                bs=ob.aq_base
            else: bs=ob

            if (
                (not obj_ids or absattr(bs.id) in obj_ids)
                and
                (not obj_metatypes or (hasattr(bs, 'meta_type') and
                 bs.meta_type in obj_metatypes))
                and
                (not obj_searchterm or
                 (hasattr(ob, 'PrincipiaSearchSource') and
                  ob.PrincipiaSearchSource().find(obj_searchterm) >= 0
                  ))
                and
                (not obj_expr or expr_match(ob, obj_expr))
                and
                (not obj_mtime or mtime_match(ob, obj_mtime, obj_mspec))
                and
                ( (not obj_permission or not obj_roles) or \
                   role_match(ob, obj_permission, obj_roles)
                )
                ):
                if apply_func:
                    apply_func(ob, (apply_path+'/'+p))
                else:
                    add_result((p, ob))
                    dflag=0

            if search_sub and hasattr(bs, 'objectItems'):
                self.ZopeFindAndApply(ob, obj_ids, obj_metatypes,
                                      obj_searchterm, obj_expr,
                                      obj_mtime, obj_mspec,
                                      obj_permission, obj_roles,
                                      search_sub,
                                      REQUEST, result, p,
                                      apply_func, apply_path)
            if dflag: ob._p_deactivate()

        return result

    security.declareProtected(search_zcatalog, 'resolve_url')
    def resolve_url(self, path, REQUEST):
        """
        Attempt to resolve a url into an object in the Zope
        namespace. The url may be absolute or a catalog path
        style url. If no object is found, None is returned.
        No exceptions are raised.
        """
        if REQUEST:
            script=REQUEST.script
            if path.find(script) != 0:
                path='%s/%s' % (script, path)
            try: return REQUEST.resolve_url(path)
            except: pass

    def resolve_path(self, path):
        """
        Attempt to resolve a url into an object in the Zope
        namespace. The url may be absolute or a catalog path
        style url. If no object is found, None is returned.
        No exceptions are raised.
        """
        try: return self.unrestrictedTraverse(path)
        except: pass

    def manage_normalize_paths(self, REQUEST):
        """Ensure that all catalog paths are full physical paths

        This should only be used with ZCatalogs in which all paths can
        be resolved with unrestrictedTraverse."""

        paths = self._catalog.paths
        uids = self._catalog.uids
        unchanged = 0
        fixed = []
        removed = []

        for path, rid in uids.items():
            ob = None
            if path[:1] == '/':
                ob = self.resolve_url(path[1:],REQUEST)
            if ob is None:
                ob = self.resolve_url(path, REQUEST)
                if ob is None:
                    removed.append(path)
                    continue
            ppath = '/'.join(ob.getPhysicalPath())
            if path != ppath:
                fixed.append((path, ppath))
            else:
                unchanged = unchanged + 1

        for path, ppath in fixed:
            rid = uids[path]
            del uids[path]
            paths[rid] = ppath
            uids[ppath] = rid
        for path in removed:
            self.uncatalog_object(path)

        return MessageDialog(title='Done Normalizing Paths',
          message='%s paths normalized, %s paths removed, and '
                  '%s unchanged.' % (len(fixed), len(removed), unchanged),
          action='./manage_main')

    security.declareProtected(manage_zcatalog_entries, 'manage_setProgress')
    def manage_setProgress(self, pgthreshold=0, RESPONSE=None, URL1=None):
        """Set parameter to perform logging of reindexing operations very 
           'pgthreshold' objects
        """

        self.pgthreshold = pgthreshold
        if RESPONSE:
            RESPONSE.redirect(
                URL1 + '/manage_catalogAdvanced?manage_tabs_message=Catalog%20Changed')

    def _getProgressThreshold(self):
        if not hasattr(self, 'pgthreshold'):
            self.pgthreshold = 0
        return self.pgthreshold

    def manage_convertIndexes(self, REQUEST=None, RESPONSE=None, URL1=None):
        """Recreate indexes derived from UnIndex because the implementation of
           __len__ changed in Zope 2.8. Pre-Zope 2.7 installation used to implement
           __len__ as persistent attribute of the index instance which is totally
           incompatible with the new extension class implementation based on new-style
           classes. 
        """

        LOG.info('Start migration of indexes for %s' % self.absolute_url(1))

        for idx in self.Indexes.objectValues():
            bases = [str(name) for name in idx.__class__.__bases__]
            found = False

            if idx.meta_type == 'PathIndex':
                found = True
            else:
                for base in bases:
                    if 'UnIndex' in base:
                        found = True
                        break

            if found:
                idx_type = idx.meta_type
                idx_id = idx.getId()
                LOG.info('processing index %s' % idx_id)

                indexed_attrs = getattr(idx, 'indexed_attrs', None)

                if idx.meta_type == 'DateRangeIndex':
                    since_field = getattr(idx, '_since_field', None)
                    until_field = getattr(idx, '_until_field', None)

                self.delIndex(idx.getId())
                self.addIndex(idx_id, idx_type)
                new_idx = self.Indexes[idx_id]

                if indexed_attrs:
                    setattr(new_idx, 'indexed_attrs', indexed_attrs)

                if idx.meta_type == 'DateRangeIndex':
                    setattr(new_idx, '_since_field',  since_field)
                    setattr(new_idx, '_until_field', until_field)

                self.manage_reindexIndex(idx_id, REQUEST)

        self._migrated_280 = True
        LOG.info('Finished migration of indexes for %s' % self.absolute_url(1))

        if RESPONSE:
            RESPONSE.redirect( URL1 +
            '/manage_main?manage_tabs_message=Indexes%20converted%20and%20reindexed')


    #
    # Indexing methods
    #

    def addIndex(self, name, type,extra=None):
        # Convert the type by finding an appropriate product which supports
        # this interface by that name.  Bleah

        products = ObjectManager.all_meta_types(self,
                                                interfaces=(IPluggableIndex,))

        p = None

        for prod in products:
            if prod['name'] == type:
                p = prod
                break

        if p is None:
            raise ValueError, "Index of type %s not found" % type

        base = p['instance']

        if base is None:
            raise ValueError, "Index type %s does not support addIndex" % type

        # This code is *really* lame but every index type has its own
        # function signature *sigh* and there is no common way to pass
        # additional parameters to the constructor. The suggested way
        # for new index types is to use an "extra" record.

        if 'extra' in base.__init__.func_code.co_varnames:
            index = base(name, extra=extra, caller=self)
        elif 'caller' in base.__init__.func_code.co_varnames:
            index = base(name, caller=self)
        else:
            index = base(name)

        self._catalog.addIndex(name,index)


    def delIndex(self, name ):
        self._catalog.delIndex(name)

    def clearIndex(self, name):
        self._catalog.getIndex(name).clear()


    def addColumn(self, name, default_value=None):
        return self._catalog.addColumn(name, default_value)

    def delColumn(self, name):
        return self._catalog.delColumn(name)


InitializeClass(ZCatalog)


def p_name(name):
    return '_' + string.translate(name, name_trans) + '_Permission'

def absattr(attr):
    if callable(attr): return attr()
    return attr


class td(RestrictedDTML, TemplateDict):
    pass

def expr_match(ob, ed, c=InstanceDict, r=0):
    e, md, push, pop=ed
    push(c(ob, md))
    try: r=e.eval(md)
    finally:
        pop()
        return r

def mtime_match(ob, t, q, fn=hasattr):
    if not fn(ob, '_p_mtime'):
        return 0
    return q=='<' and (ob._p_mtime < t) or (ob._p_mtime > t)

def role_match(ob, permission, roles, lt=type([]), tt=type(())):
    pr=[]
    fn=pr.append

    while 1:
        if hasattr(ob, permission):
            p=getattr(ob, permission)
            if type(p) is lt:
                map(fn, p)
                if hasattr(ob, 'aq_parent'):
                    ob=ob.aq_parent
                    continue
                break
            if type(p) is tt:
                map(fn, p)
                break
            if p is None:
                map(fn, ('Manager', 'Anonymous'))
                break

        if hasattr(ob, 'aq_parent'):
            ob=ob.aq_parent
            continue
        break

    for role in roles:
        if not (role in pr):
            return 0
    return 1
