patrick@actrix.co.nz (Pat Cain) (05/25/90)
In article <> Doug Kerr <doug@cis.ohio-state.edu> writes: >In article <> patrick@actrix.co.nz (Pat Cain) writes: >>I am in need of full source code to implement the B-tree data structure >>in Modula 2. Does anyone know where I can obtain this (preferably for >>free). >Me too. My alternative is to interface to a C implementation that was >posted to comp.sources.misc. I've located some B-tree source in a book by Niklaus Wirth (?sp). IT all works fine, but may need to be altered for your application. If you want a copy then e-mail me: cs200cap@st1.vuw.ac.nz (don't reply to this article as it costs me $$$ to receive mail at this address!). I understand some source for B-trees was posted last year in this newsgroup - does anyone still have a copy of this? -- pat cain e-mail: snarky@st1.vuw.ac.nz or patrick@actrix.co.nz bbs: +64 4 661231, Sideways BBS [BBC & Archimedes].
a665@mindlink.UUCP (Anthon Pang) (05/28/90)
> patrick@actrix.co.nz writes: > I am in need of full source code to implement the B-tree data structure > in Modula 2. Does anyone know where I can obtain this (preferably for > free). If so, please e-mail me at cs200cap@st1.vuw.ac.nz rather than > replying to this article. Actually, b+ tree sources (especially in M2) would be quite useful to others. However, the one posted to comp.sources.misc is very large, is written in C, and consists of several files...making it harder (but not impossible) to port to M2. However, I have some much more compact B+ tree source (alas, still in C), which I hope to finish translating...probably August...you're not in a hurry, are you ? :)
doug@bear.cis.ohio-state.edu (Doug Kerr) (05/28/90)
In article <1990May25.122659.23212@actrix.co.nz> patrick@actrix.co.nz (Pat Cain) writes: > . . . >I understand some source for B-trees was posted last year in this newsgroup >- does anyone still have a copy of this? >-- I don't know anything about Modula-2 sources for B-trees, but C sources were posted to comp.sources.misc in January. I've included the header information below. >From: mjr@umiacs.UMD.EDU (Marcus J. Ranum) Newsgroups: comp.sources.misc Subject: v10i027: B+tree library, part01 of 5 Message-ID: <77162@uunet.UU.NET> Date: 20 Jan 90 01:19:23 GMT Sender: allbery@uunet.UU.NET Lines: 2482 Approved: allbery@uunet.UU.NET (Brandon S. Allbery - comp.sources.misc) Posting-number: Volume 10, Issue 27 Submitted-by: mjr@umiacs.UMD.EDU (Marcus J. Ranum) Archive-name: b+tree_mjr/part01 This is the source code for a variable-length key variable page size b+tree library. Also included is source for a variety of test programs, a semi-useable record manager, and a dbm-lookalike library built on top of the record manager and b+tree. (dbm(3) will blow it away performance-wise, of course). This software has been tested (and works) on the following: Pyramid/OSx, Sun4/SunOs, Sun3/SunOs, Digital Vax/BSD4.3, Digital DECstation3100/Ultrix This software has been tested and found NOT to work on the following: SCO Xenix - I have no idea why because I don't have one -=- Douglas S. Kerr, Department of Computer and Information Science The Ohio State University; 2036 Neil Ave. Columbus OH USA 43210-1277 doug@cis.ohio-state.edu 614/292-1519 ...!{pyramid,killer}!osu-cis!cis.ohio-state.edu!doug
vixie@decwrl.dec.com (Paul A Vixie) (05/30/90)
There are some B-tree routines in Wirth's "Algorythms and Data Structures" (second version, source code in M2 rather than P). I converted them to C and posted them to comp.sources.unix a few years back, but the originals are still in the book :-).. -- Paul Vixie DEC Western Research Lab <vixie@wrl.dec.com> Palo Alto, California ...!decwrl!vixie
Chris.Bolduc@f216.n229.z1.fidonet.org (Chris Bolduc) (06/02/90)
I do have B+ tree source code in M2, ready to run. It is not as a
library but rather as some kind of stand alone application. I had to do
this to test the algorithm before bringing the B+ tree algorithm one
step further in sofistication, but that part is mine to keep. The
regular routines I can post them on this BBS for you to request. This
will take a couple of weeks for me to dig it out of archive.
Let me know if you are interested
Chris
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