Question

我正在尝试从plone 3.3.5迁移到plone 4.0.7并且我坚持将所有FileFields转换为BlobFields的步骤。

Plone升级脚本成功转换所有本机FileField但我有几个自定义的基于AT的类，必须手动转换。我尝试了两种方法进行转换，这导致了同样的错误。

使用Plone migration guide和a source code example

将所有FileField重命名为blob字段，然后运行此脚本：

from AccessControl.SecurityManagement import newSecurityManager
from AccessControl import getSecurityManager

from Products.CMFCore.utils import getToolByName
from zope.app.component.hooks import setSite

from Products.contentmigration.migrator import BaseInlineMigrator
from Products.contentmigration.walker import CustomQueryWalker

from plone.app.blob.field import BlobField


admin=app.acl_users.getUserById("admin")
newSecurityManager(None, admin)

portal = app.plone
setSite(portal)


def find_all_types_fields(portal_catalog, type_instance_to_search):
    output = {}
    searched = []
    for k in catalog():
        kobj = k.getObject()
        if kobj.__class__.__name__ in searched:
            continue
        searched.append(kobj.__class__.__name__)
        for field in kobj.schema.fields():
            if isinstance(field, type_instance_to_search):
                if kobj.__class__.__name__ in output:
                    output[kobj.__class__.__name__].append(field.__name__)
                else:
                    output[kobj.__class__.__name__] = [field.__name__]
    return output

def produce_migrator(field_map):
    source_class = field_map.keys()[0]
    fields = {}
    for x in field_map.values()[0]: fields[x] = None

    class FileBlobMigrator(BaseInlineMigrator):
        '''Migrating ExtensionBlobField (which is still a FileField) to BlobField'''
        src_portal_type = source_class
        src_meta_type = source_class
        fields_map = fields
        def migrate_data(self):
            '''Unfinished'''
            for k in self.fields_map.keys():
                #print "examining attributes"
                #import pdb; pdb.set_trace()
                #if hasattr(self.obj, k):
                if k in self.obj.schema.keys():
                    print("***converting attribute:", k)
                    field = self.obj.getField(k).get(self.obj)
                    mutator = self.obj.getField(k).getMutator(self.obj)
                    mutator(field)
        def last_migrate_reindex(self):
            '''Unfinished'''
            self.obj.reindexObject()
    return FileBlobMigrator

def consume_migrator(portal_catalog, migrator):
    walker = CustomQueryWalker(portal_catalog, migrator, full_transaction=True)
    transaction.savepoint(optimistic=True)
    walker_status = walker.go()
    return walker.getOutput()

def migrate_blobs(catalog, migrate_type):
    all_fields = find_all_types_fields(catalog, migrate_type)
    import pdb; pdb.set_trace()
    for k in [ {k : all_fields[k]} for k in all_fields]:
        migrator = produce_migrator(k)
        print consume_migrator(catalog, migrator)


catalog = getToolByName(portal, 'portal_catalog')

migrate_blobs(catalog, BlobField)

问题发生在self.obj.reindexObject（）行，我收到以下回溯：

    2011-08-09 17:21:12 ERROR Zope.UnIndex KeywordIndex: unindex_object could not remove documentId -1945041983 from index object_provides.  This should not happen.
    Traceback (most recent call last):
    File "/home/alex/projects/plone4/eggs/Zope2-2.12.18-py2.6-linux-x86_64.egg/Products/PluginIndexes/common/UnIndex.py", line 166, in removeForwardIndexEntry indexRow.remove(documentId)
    KeyError: -1945041983
    > /home/alex/projects/plone4/eggs/Zope2-2.12.18-py2.6-linux-x86_64.egg/Products/PluginIndexes/common/UnIndex.py(192)removeForwardIndexEntry()
        191                            str(documentId), str(self.id)),
    --> 192                            exc_info=sys.exc_info())
        193         else:

如果我删除触发重建索引的行，转换成功完成，但如果我稍后尝试手动重新编制目录，则无法再找到已转换的每个对象，而且我有点不知所措现在

该网站安装了LinguaPlone，可能与此有关吗？

Answer 1

一种选择是在没有reindexObject（）调用的情况下运行迁移，并在迁移后在目录ZMI Advanced选项卡中执行“Clear and Rebuild”。

在Plone 4.0.7中，FileField到BlobField迁移期间reindexObject失败

1 个答案: