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/usr/share/perl5/vendor_perl/CPANPLUS/Internals/Source

File/Folder	Size	Actions
Memory.pm	10.17 KB
SQLite	-
SQLite.pm	9.51 KB

Edit: SQLite.pm

package CPANPLUS::Internals::Source::SQLite;

use strict;
use warnings;

use base 'CPANPLUS::Internals::Source';

use CPANPLUS::Error;
use CPANPLUS::Internals::Constants;
use CPANPLUS::Internals::Source::SQLite::Tie;

use Data::Dumper;
use DBIx::Simple;
use DBD::SQLite;

use Params::Check               qw[allow check];
use Locale::Maketext::Simple    Class => 'CPANPLUS', Style => 'gettext';

use vars qw[$VERSION];
$VERSION = "0.9138";

use constant TXN_COMMIT => 1000;

=head1 NAME

CPANPLUS::Internals::Source::SQLite - SQLite implementation

=cut

{   my $Dbh;
    my $DbFile;

sub __sqlite_file {
        return $DbFile if $DbFile;

my $self = shift;
        my $conf = $self->configure_object;

$DbFile = File::Spec->catdir(
                        $conf->get_conf('base'),
                        SOURCE_SQLITE_DB
            );

return $DbFile;
    };

sub __sqlite_dbh {
        return $Dbh if $Dbh;

my $self = shift;
        $Dbh     = DBIx::Simple->connect(
                        "dbi:SQLite:dbname=" . $self->__sqlite_file,
                        '', '',
                        { AutoCommit => 1 }
                    );
        #$Dbh->dbh->trace(1);
        $Dbh->query(qq{PRAGMA synchronous = OFF});

return $Dbh;
    };

sub __sqlite_disconnect {
      return unless $Dbh;
      $Dbh->disconnect;
      $Dbh = undef;
      return;
    }
}

{   my $used_old_copy = 0;

sub _init_trees {
        my $self = shift;
        my $conf = $self->configure_object;
        my %hash = @_;

my($path,$uptodate,$verbose,$use_stored);
        my $tmpl = {
            path        => { default => $conf->get_conf('base'), store => \$path },
            verbose     => { default => $conf->get_conf('verbose'), store => \$verbose },
            uptodate    => { required => 1, store => \$uptodate },
            use_stored  => { default  => 1, store => \$use_stored },
        };

check( $tmpl, \%hash ) or return;

### if it's not uptodate, or the file doesn't exist, we need to create
        ### a new sqlite db
        if( not $uptodate or not -e $self->__sqlite_file ) {
            $used_old_copy = 0;

### chuck the file
            $self->__sqlite_disconnect;
            1 while unlink $self->__sqlite_file;

### and create a new one
            $self->__sqlite_create_db or do {
                error(loc("Could not create new SQLite DB"));
                return;
            }
        } else {
            $used_old_copy = 1;
        }

### set up the author tree
        {   my %at;
            tie %at, 'CPANPLUS::Internals::Source::SQLite::Tie',
                dbh => $self->__sqlite_dbh, table => 'author',
                key => 'cpanid',            cb => $self;

$self->_atree( \%at  );
        }

### set up the author tree
        {   my %mt;
            tie %mt, 'CPANPLUS::Internals::Source::SQLite::Tie',
                dbh => $self->__sqlite_dbh, table => 'module',
                key => 'module',            cb => $self;

$self->_mtree( \%mt  );
        }

### start a transaction
        $self->__sqlite_dbh->query('BEGIN');

return 1;

}

sub _standard_trees_completed   { return $used_old_copy }
    sub _custom_trees_completed     { return }
    ### finish transaction
    sub _finalize_trees             { $_[0]->__sqlite_dbh->commit; return 1 }

### saves current memory state, but not implemented in sqlite
    sub _save_state                 {
        error(loc("%1 has not implemented writing state to disk", __PACKAGE__));
        return;
    }
}

{   my $txn_count = 0;

### XXX move this outside the sub, so we only compute it once
    my $class;
    my @keys    = qw[ author cpanid email ];
    my $tmpl    = {
        class   => { default => 'CPANPLUS::Module::Author', store => \$class },
        map { $_ => { required => 1 } } @keys
     };

### dbix::simple's expansion of (??) is REALLY expensive, so do it manually
    my $ph      = join ',', map { '?' } @keys;

sub _add_author_object {
        my $self = shift;
        my %hash = @_;
        my $dbh  = $self->__sqlite_dbh;

my $href = do {
            local $Params::Check::NO_DUPLICATES         = 1;
            local $Params::Check::SANITY_CHECK_TEMPLATE = 0;
            check( $tmpl, \%hash ) or return;
        };

### keep counting how many we inserted
        unless( ++$txn_count % TXN_COMMIT ) {
            #warn "Committing transaction $txn_count";
            $dbh->commit or error( $dbh->error ); # commit previous transaction
            $dbh->begin_work  or error( $dbh->error ); # and start a new one
        }

$dbh->query(
            "INSERT INTO author (". join(',',keys(%$href)) .") VALUES ($ph)",
            values %$href
        ) or do {
            error( $dbh->error );
            return;
        };

return 1;
     }
}

{   my $txn_count = 0;

### XXX move this outside the sub, so we only compute it once
    my $class;
    my @keys = qw[ module version path comment author package description dslip mtime ];
    my $tmpl = {
        class   => { default => 'CPANPLUS::Module', store => \$class },
        map { $_ => { required => 1 } } @keys
    };

### dbix::simple's expansion of (??) is REALLY expensive, so do it manually
    my $ph      = join ',', map { '?' } @keys;

sub _add_module_object {
        my $self = shift;
        my %hash = @_;
        my $dbh  = $self->__sqlite_dbh;

my $href = do {
            local $Params::Check::NO_DUPLICATES         = 1;
            local $Params::Check::SANITY_CHECK_TEMPLATE = 0;
            check( $tmpl, \%hash ) or return;
        };

### fix up author to be 'plain' string
        $href->{'author'} = $href->{'author'}->cpanid;

$dbh->query(
            "INSERT INTO module (". join(',',keys(%$href)) .") VALUES ($ph)",
            values %$href
        ) or do {
            error( $dbh->error );
            return;
        };

return 1;
    }
}

{   my %map = (
        _source_search_module_tree
            => [ module => module => 'CPANPLUS::Module' ],
        _source_search_author_tree
            => [ author => cpanid => 'CPANPLUS::Module::Author' ],
    );

while( my($sub, $aref) = each %map ) {
        no strict 'refs';

my($table, $key, $class) = @$aref;
        *$sub = sub {
            my $self = shift;
            my %hash = @_;

my($list,$type);
            my $tmpl = {
                allow   => { required   => 1, default   => [ ], strict_type => 1,
                             store      => \$list },
                type    => { required   => 1, allow => [$class->accessors()],
                             store      => \$type },
            };

check( $tmpl, \%hash ) or return;

### we aliased 'module' to 'name', so change that here too
            $type = 'module' if $type eq 'name';

my $meth = $table .'_tree';

{
              my $throw = $self->$meth;
            }

my $dbh  = $self->__sqlite_dbh;
            my $res = $dbh->query( "SELECT * from $table" );

my @rv = map  { $self->$meth( $_->{$key} ) }
                     grep { allow( $_->{$type} => $list ) } $res->hashes;

return @rv;
        }
    }
}

sub __sqlite_create_db {
    my $self = shift;
    my $dbh  = $self->__sqlite_dbh;

### we can ignore the result/error; not all sqlite implementations
    ### support this
    $dbh->query( qq[
        DROP TABLE IF EXISTS author;
        \n]
     ) or do {
        msg( $dbh->error );
    };
    $dbh->query( qq[
        DROP TABLE IF EXISTS module;
        \n]
     ) or do {
        msg( $dbh->error );
    };

$dbh->query( qq[
        /* the author information */
        CREATE TABLE author (
            id INTEGER PRIMARY KEY AUTOINCREMENT,

author  varchar(255),
            email   varchar(255),
            cpanid  varchar(255)
        );
        \n]