Each Broker can support different attributes, depending on the data it holds. Below we list a set of the most common attributes:
Abstract
Brief abstract about the object.
Author
Author(s) of the object.
Description
Brief description about the object.
File-Size
Number of bytes in the object.
Full-Text
Entire contents of the object.
Gatherer-Host
Host on which the Gatherer ran to extract information from the object.
Gatherer-Name
Name of the Gatherer that extracted information from the object. (eg.
Full-Text, Selected-Text, or Terse).
Gatherer-Port
Port number on the Gatherer-Host that serves the Gatherer's information.
Gatherer-Version
Version number of the Gatherer.
Update-Time
The time that Gatherer updated the content summary for the object.
Keywords
Searchable keywords extracted from the object.
Last-Modification-Time
The time that the object was last modified.
MD5
MD5 16-byte checksum of the object.
Refresh-Rate
The number of seconds after Update-Time when the summary object is to
be re-generated. Defaults to 1 month.
Time-to-Live
The number of seconds after Update-Time when the summary object is
no longer valid. Defaults to 6 months.
Title
Title of the object.
Type
The object's type. Some example types are:
Archive
Audio
Awk
Backup
Binary
C
CHeader
Command
Compressed
CompressedTar
Configuration
Data
Directory
DotFile
Dvi
FAQ
FYI
Font
FormattedText
GDBM
GNUCompressed
GNUCompressedTar
HTML
Image
Internet-Draft
MacCompressed
Mail
Makefile
ManPage
Object
OtherCode
PCCompressed
Patch
Perl
PostScript
RCS
README
RFC
SCCS
ShellArchive
Tar
Tcl
Tex
Text
Troff
Uuencoded
WaisSource
Update-Time
The time that the summary object was last updated.
REQUIRED field, no default.
URL-References
Any URL references present within HTML objects.