This is the TripleDB, a way of persistently remembering "triples" of data.
Each entry is kind of a "subject-verb-object" set. For example, some
entries might be:
Noun Verb Object
=========================================
File1 Length 1253254
File1 MimeType text/html
File1 Author Ralph
File2 Length 32542
File2 MimeType image/gif
File2 Author Bertha
This API is about storing, deleting, and querying such triples to a
database. Each member of a triple can be a string, integer, or date.
For more details, read the API, in tdbapi.h.
Note that TripleDB now depends on the Sleepycat Berkeley DB, version
3.1.11 or greater. For more information on that, see
http://www.sleepycat.com.
FAQ:
Q: "Hey! There's no Makefile!"
A: Yeah, yeah, I know. This is developed as part of a project at
work, and our Makefiles are all messed up. If you have one that fits in well
with other stuff at mozilla.org, please feel free to contribute it.
Q: Um, so nobody else here uses this?
A: That's right. But this maps in pretty well to RDF, I believe. I wouldn't
be surprised if someone decides to use it to store a biggish RDF database,
and adds it to mozilla for that purpose.
- Terry Weissman terry@mozilla.org
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