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Genezzo::Index::btHashUser Contributed Perl DocumentaGenezzo::Index::btHash(3)

NAME
       Genezzo::Index::btHash -	btree Hash tied	hash class.  Makes a
       persistent btree	based upon Genezzo::Block::RDBlock look	like a
       conventional hash.

SYNOPSIS
	use Genezzo::Index::btHash;

	my %tied_hash =	();

	my $tie_val =
	    tie	%tied_hash, 'Genezzo::Index::btHash';

DESCRIPTION
       btHash is a wrapper for Genezzo::Index::bt2, a btree class based	upon
       Genezzo::Block::RDBlock.	 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
       implementation.

FUNCTIONS
   EXPORT
TODO
       figure out whether should be a pushhash,	hash, or rowsource
       SQLPrepare/Execute/Fetch:  clean	up.  Shouldn't 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 don't 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.

AUTHOR
       Jeffrey I. Cohen, jcohen@genezzo.com

SEE ALSO
       perl(1).

       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: jcohen@genezzo.com

       For more	information, please visit the Genezzo homepage at
       <http://www.genezzo.com>

perl v5.32.0			  2005-07-19	     Genezzo::Index::btHash(3)

NAME | SYNOPSIS | DESCRIPTION | FUNCTIONS | TODO | AUTHOR | SEE ALSO

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