DBD::Excel.3pm

Langue: en

Autres versions - même langue

Version: 2008-05-15 (ubuntu - 08/07/09)

Section: 3 (Bibliothèques de fonctions)

NAME

DBD::Excel - A class for DBI drivers that act on Excel File.

This is still alpha version.

SYNOPSIS

     use DBI;
     $hDb = DBI->connect("DBI:Excel:file=test.xls")
         or die "Cannot connect: " . $DBI::errstr;
     $hSt = $hDb->prepare("CREATE TABLE a (id INTEGER, name CHAR(10))")
         or die "Cannot prepare: " . $hDb->errstr();
     $hSt->execute() or die "Cannot execute: " . $hSt->errstr();
     $hSt->finish();
     $hDb->disconnect();
 
 

DESCRIPTION

This is still alpha version.

The DBD::Excel module is a DBI driver. The module is based on these modules:

Spreadsheet::ParseExcel

reads Excel files.

Spreadsheet::WriteExcel

writes Excel files.

SQL::Statement

a simple SQL engine.

DBI

Of course. :-)

This module assumes TABLE = Worksheet. The contents of first row of each worksheet as column name.

Adding that, this module accept temporary table definition at ``connect'' method with ``xl_vtbl''.

ex.
    my $hDb = DBI->connect(
            ``DBI:Excel:file=dbdtest.xls'', undef, undef, 
                        {xl_vtbl => 
                            {TESTV => 
                                {
                                    sheetName => 'TEST_V',
                                    ttlRow    => 5,
                                    startCol  => 1,
                                    colCnt    => 4,
                                    datRow    => 6,
                                    datLmt    => 4,
                                }
                            }
                        });

For more information please refer sample/tex.pl included in this distribution.

Metadata

The following attributes are handled by DBI itself and not by DBD::Excel, thus they all work like expected:

     Active
     ActiveKids
     CachedKids
     CompatMode             (Not used)
     InactiveDestroy
     Kids
     PrintError
     RaiseError
     Warn                   (Not used)
 
 

The following DBI attributes are handled by DBD::Excel:

AutoCommit
Always on
ChopBlanks
Works
NUM_OF_FIELDS
Valid after "$hSt->execute"
NUM_OF_PARAMS
Valid after "$hSt->prepare"
NAME
Valid after "$hSt->execute"; undef for Non-Select statements.
NULLABLE
Not really working, always returns an array ref of one's. Valid after "$hSt->execute"; undef for Non-Select statements.

These attributes and methods are not supported:

     bind_param_inout
     CursorName
     LongReadLen
     LongTruncOk
 
 

Additional to the DBI attributes, you can use the following dbh attribute:

xl_fmt
This attribute is used for setting the formatter class for parsing.
xl_dir
This attribute is used only with "data_sources" on setting the directory where Excel files ('*.xls') are searched. It defaults to the current directory (``.'').
xl_vtbl
assumes specified area as a table. See sample/tex.pl.
xl_skiphidden
skip hidden rows(=row height is 0) and hidden columns(=column width is 0). See sample/thidden.pl.
xl_ignorecase
set casesensitive or not about table name and columns. Default is sensitive (maybe as SQL::Statement). See sample/thidden.pl.

Driver private methods

data_sources
The "data_sources" method returns a list of '*.xls' files of the current directory in the form ``DBI:Excel:xl_dir=$dirname''.

If you want to read the subdirectories of another directory, use

     my($hDr) = DBI->install_driver("Excel");
     my(@list) = $hDr->data_sources( 
                     { xl_dir => '/usr/local/xl_data' } );
 
 
list_tables
This method returns a list of sheet names contained in the $hDb->{file}. Example:
     my $hDb = DBI->connect("DBI:Excel:file=test.xls");
     my @list = $hDb->func('list_tables');
 
 

TODO

More tests
First of all...
Type and Format
The current version not support date/time and text formating.
Joins
The current version of the module works with single table SELECT's only, although the basic design of the SQL::Statement module allows joins and the likes.

KNOWN BUGS

There are too many TODO things. So I can't determind what is BUG. :-)

AUTHOR

Kawai Takanori (Hippo2000) kwitknr@cpan.org
   Homepage:
     http://member.nifty.ne.jp/hippo2000/            (Japanese)
     http://member.nifty.ne.jp/hippo2000/index_e.htm (English)
 
   Wiki:
     http://www.hippo2000.net/cgi-bin/KbWiki/KbWiki.pl  (Japanese)
     http://www.hippo2000.net/cgi-bin/KbWikiE/KbWiki.pl (English)
 
 

SEE ALSO

DBI, Spreadsheet::WriteExcel, Spreadsheet::ParseExcel, SQL::Statement Copyright (c) 2001 KAWAI,Takanori All rights reserved.

You may distribute under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl README file.

POD ERRORS

Hey! The above document had some coding errors, which are explained below:
Around line 102:
Unknown directive: =cmmt