_google_appengine_ext_db.py 文件源码

def getGAEObjects(context):
    """
    Returns a reference to the C{gae_objects} on the context. If it doesn't
    exist then it is created.

    @param context: The context to load the C{gae_objects} index from.
    @return: The C{gae_objects} index reference.
    @rtype: Instance of L{GAEReferenceCollection}
    @since: 0.4.1
    """
    ref_collection = context.get(XDB_CONTEXT_NAME, None)

    if ref_collection:
        return ref_collection

    ret = context[XDB_CONTEXT_NAME] = XDBReferenceCollection()

    return ret