Manual Reference Pages - GENEZZO::INDEX::BTHASH (3)
Genezzo::Index::btHash - btree Hash tied hash class. Makes a persistent
btree based upon Genezzo::Block::RDBlock look like a conventional
my %tied_hash = ();
my $tie_val =
tie %tied_hash, Genezzo::Index::btHash;
btHash is a wrapper for <B>Genezzo::Index::bt2B>, a btree class based upon
<B>Genezzo::Block::RDBlockB>. The tied hash is functionally complete, but
not particularly efficient in some cases due to the impedance
mismatch between the hash, btree and underlying RDBlock
figure out whether should be a pushhash, hash, or rowsource
SQLPrepare/Execute/Fetch: clean up. Shouldnt need to manage a distinction between using btHash as a row source and the old bt2 api. bt2 is wrong - should only have one Fetch style. Should be able to use the index start/stop key vs filtering.
NEXTKEY: broken in dump tsidx for case where create 2 tables, insert some rows, then drop the first table (and dont COMMIT) and call dump tsidx. Loops in NEXTKEY - never terminates for allfileused index.
Add ReadOnly mode so can view indexes, but not insert/update/delete.
Jeffrey I. Cohen, email@example.com
Copyright (c) 2003, 2004 Jeffrey I Cohen. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Address bug reports and comments to: firstname.lastname@example.org
For more information, please visit the Genezzo homepage
|perl v5.20.3 ||GENEZZO::INDEX::BTHASH (3) ||2005-07-19 |
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