| Providers |
ASF (U.S. Government departments and commercial partners.) Details
Product
Download
Community support is available via the asf@cni.org mailing list.
Some of the packages included have conflicting copyright;
additional code written by the ASF group has no copyright
assignment. |
| Purpose |
Provides a set of components to provide capabilities for
making a set of documents searchable. The documents can be
internal or located at remote sites. Documents can be made
searchable through the web. The freeware distribution contains
all the components necessary to provide at least the minimal
service. Based on the ASF interoperability framework for
(predominantly) government information. |
| Approach |
Integrates freeware components. The distribution combines
components in a way which is compatible with the ASF
architectural model. The individual components themselves may be
interchanged with other ASF-compatible software or upgraded to
commercial implementations. The components included in the ASF
Freeware distribution are a web server for enabling web-based
searches; a Z39.50 server for serving out documents; a search
engine for indexing; a web-crawler for gathering information from
remote web sites; a web to Z39.50 gateway; |
| Platform and requirements |
The Freeware ASF distribution runs on a unix or Linux
platform. Requires Perl and C/C++ compiler. |
| Components and their
technology |
|
| Server |
An Apache web server comes with the distribution; A YAZ-based Z39.50 database server (ASFserv); |
| Database |
The database being searched is constructed using ASFcrawl,
which performs HTTP based traversal and indexing starting at a
nominated URL. The ASF database is normally accessed via the
Z39.50 search and retrieval protocol, but experimental WHOIS++
access is also available. |
| Search tools/clients |
The end user interacts via HTTP with an Apache module
mod_zap. |
| API |
The software implements the ASF framework - the components
should be well-isolated with well-defined interfaces, so that
they can be replaced by third-party components written to use the
same interface. |
| Metadata Formats |
GILS records encoded in XML are the standard metadata
format. |
| Extras/Other features |
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