schema.py

_ = unicode
from yams.buildobjs import EntityType, String, RichString

class Link(EntityType):
    """a link to an external internet resource"""
    title = String(required=True, fulltextindexed=True, maxsize=256)
    url = String(required=True, fulltextindexed=True, maxsize=512,
                 description=_("link's url"))
    description = RichString(fulltextindexed=True,
                             description=_("description of the linked page's content"))