update pod
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=encoding utf8 |
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added DBIx::Custom::Guides
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=head1 NAME |
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update pod
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DBIx::Custom::Guide - DBIx::Custom Guide |
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pod fix
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=head1 GUIDE |
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B<This guide is now writing.> |
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L<DBIx::Custom> is the class to make easy to execute SQL. |
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This is L<DBI> wrapper class like L<DBIx::Class> or L<DBIx::Simple>. |
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You can do thing more easy than L<DBIx::Class>, more flexible |
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than L<DBIx::Simple>. |
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L<DBIx::Custom> is B<not< O/R mapper, O/R mapper is usefule, but |
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you must learn many things. Created SQL is sometimes inefficient, |
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and in many cases you create raw SQL because |
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O/R mapper can't make complex SQL |
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L<DBIx::Custom> is opposit of O/R mapper. |
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The main purpose is that we respect SQL |
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and make easy difficult works if you use only L<DBI>. |
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If you already learn SQL, it is easy to use L<DBIx::Custom>. |
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I explain L<DBIx::Custom> a little in this section. |
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In L<DBIx::Custom>, you embbed tag in SQL. |
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select * from book where {= title} and {=author}; |
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The part arround {} is tag. |
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This SQL is converted to the one which contains place holder. |
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select * from book where title = ? and author = ?; |
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Maybe you ask me that this conversion is meaningful. |
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On the top of this, usuful features is implemented. |
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See the following descriptions. |
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=over 4 |
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=item 1. Specify place holder binding value as hash refernce |
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If you use L<DBI>, you must specify place holder binding value |
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as array. |
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$sth->execute(@bind); |
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If you use L<DBIx::Custom>, you specify it as hash reference. |
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my $param = {title => 'Perl', author => 'Ken'}; |
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$dbi->execute($sql, $param); |
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=item 2. Filtering |
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L<DBIx::Custom> provides filtering system. |
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For example, You think that about date value you want to |
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manipulate it as date object like L<Time::Piece> in Perl, |
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and want to convert it to database DATE format. |
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and want to do reverse. |
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You can use filtering system. |
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At first, register filter. |
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$dbi->register_filter( |
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tp_to_date => sub { |
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... |
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}, |
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date_to_tp => sub { |
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... |
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} |
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); |
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next, apply this filter to each column. |
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$dbi->apply_filter('book', |
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'issue_date' => {out => 'tp_to_date', in => 'date_to_tp'} |
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); |
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C<out> is perl-to-database way. C<in> is perl-from-database way. |
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This filter is automatically enabled in many method. |
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$dbi->insert(table => 'book', param => {issue_date => $tp}); |
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=item 3. Selective search condition |
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It is difficult to create selective where clause in L<DBI>. |
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For example, If C<title> and C<author> is specified, we create |
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the following SQL. |
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select * from book where title = ? and author = ?; |
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If only C<title> is specified, the following one |
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select * from book where title = ?; |
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If only C<author> is specified, the following one, |
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select * from book where author = ?; |
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This is hard work. Generally we use modules like L<SQL::Abstract>. |
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L<DBIx::Custom> prepare the way to make it easy. |
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# Where object |
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my $where = $dbi->where; |
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# Search condition |
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$where->clause( |
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['and', '{= title}', {'= author'}] |
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); |
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# Setting to automatically select needed column |
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$where->param({title => 'Perl'}); |
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# Embbed where clause to SQL |
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my $sql = "select * from book $where"; |
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You can create where clause which has selected search condition. |
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You can write nesting of where clause and C<or> condition |
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=item 4. Methods for insert, update, delete, select |
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L<DBIx::Custom> provides methods for insert, update, delete, select |
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There are C<insert()>, C<update()>, C<delete()>,C<select()>. |
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my $param = {title => 'Perl', author => 'Ken'}; |
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$dbi->insert(table => 'book', param => $param); |
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=item 5. Register method for table. |
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You can register method for table. |
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$dbi->table('book')->method( |
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list => sub { |
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... |
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}, |
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something => sub { |
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... |
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} |
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); |
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use the mehtod. |
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$dbi->table('book')->list; |
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Many O/R mapper must create class for table, |
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but L<DBIx::Custom> make it easy. |
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=back |
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L<DBIx::Custom> is very useful. |
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See the following if you are interested in it. |
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=head2 1. Connect to database |
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Load L<DBIx::Custom>. |
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use DBIx::Custom; |
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use C<connect()> to connect to database. |
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Return value is L<DBIx::Custom> object. |
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my $dbi = DBIx::Custom->connect( |
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data_source => "dbi:mysql:database=bookstore", |
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user => 'ken', |
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password => '!LFKD%$&', |
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dbi_options => {mysql_enable_utf8 => 1} |
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); |
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C<data_source> must be one corresponding to the database system. |
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The following ones are data source example. |
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B<MySQL> |
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"dbi:mysql:database=$database" |
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"dbi:mysql:database=$database;host=$hostname;port=$port" |
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B<SQLite> |
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"dbi:SQLite:dbname=$database" |
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"dbi:SQLite:dbname=:memory:" |
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B<PostgreSQL> |
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"dbi:Pg:dbname=$dbname" |
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B<Oracle> |
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"dbi:Oracle:$dbname" |
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"dbi:Oracle:host=$host;sid=$sid" |
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B<ODBC(Microsoft Access)> |
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"dbi:ODBC:driver=Microsoft Access Driver (*.mdb);dbq=hoge.mdb" |
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B<ODBC(SQL Server)> |
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"dbi:ODBC:driver={SQL Server};Server=(local);database=test;Trusted_Connection=yes;AutoTranslate=No;" |
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If authentication is needed, you can specify C<user> and C<password> |
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L<DBIx::Custom> is wrapper class of L<DBI>. |
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You can use all methods of L<DBI> from L<DBIx::Custom> object. |
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$dbi->do(...); |
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$dbi->begin_work; |
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use C<dhb()> to get database handle of L<DBI> |
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my $dbh = $dbi->dbh; |
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By default, the following ones is set to database handle attributes. |
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RaiseError -> 1 |
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PrintError -> 0 |
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AutoCommit -> 1 |
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If fatal error occuer, program terminate. |
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If SQL is executed, commit is executed automatically. |
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=head2 2. Methods for insert, update, delete, or insert |
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There are following methods. |
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=head3 C<insert()> |
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use C<insert()> to insert row into database |
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$dbi->insert(table => 'book', |
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param => {title => 'Perl', author => 'Ken'}); |
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C<table> is table name, C<param> is insert data. |
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Following SQL is executed. |
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insert into (title, author) values (?, ?); |
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=head3 C<update()> |
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use C<update()> to update row in database. |
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$dbi->update(table => 'book', |
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param => {title => 'Perl', author => 'Ken'}, |
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where => {id => 5}); |
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C<table> is table name, C<param> is update data, C<where> is condition. |
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Following SQL is executed. |
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update book set title = ?, author = ?; |
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You can't execute C<update()> without C<where> for safety. |
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use C<update_all()> if you want to update all rows. |
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$dbi->update_all(table => 'book', |
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param => {title => 'Perl', author => 'Ken'}); |
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=head3 C<delete()> |
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use C<delete()> to delete rows from database. |
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remove DBIx::Custom::Model
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$dbi->delete(table => 'book', |
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where => {author => 'Ken'}); |
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C<table> is table name, C<where> is condition. |
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Following SQL is executed. |
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delete from book where id = ?; |
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You can't execute C<delete()> without C<where> for safety. |
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use C<delete_all()> if you want to delete all rows. |
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$dbi->delete_all(table => 'book'); |
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=head3 C<select()> |
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use C<select()> to select rows from database |
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remove DBIx::Custom::Model
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my $result = $dbi->select(table => 'book'); |
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Following SQL is executed. |
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remove DBIx::Custom::Model
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select * from book; |
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Return value is L<DBIx::Custom::Result> object. |
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use C<fetch()> to fetch row. |
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while (my $row = $result->fetch) { |
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my $title = $row->[0]; |
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my $author = $row->[1]; |
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} |
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See L<3. Fetch row/"3. Fetch row"> about L<DBIx::Custom::Result>. |
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Continue more examples. |
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my $result = $dbi->select( |
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table => 'book', |
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column => ['author', 'title'], |
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where => {author => 'Ken'} |
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); |
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C<column> is column names, C<where> is condition. |
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Following SQL is executed. |
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select author, title from book where author = ?; |
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Next example. |
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my $result = $dbi->select( |
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table => ['book', 'rental'], |
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where => {'book.name' => 'Perl'}, |
remove DBIx::Custom::Model
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relation => {'book.id' => 'rental.book_id'} |
added DBIx::Custom::Guides
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); |
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C<relation> is relation of tables. This is inner join. |
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Following SQL is executed. |
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select * from book, rental where book.name = ? and book.id = rental.book_id; |
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Next example. |
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my $result = $dbi->select( |
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table => 'book', |
added DBIx::Custom::Guides
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where => {author => 'Ken'}, |
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append => 'for update', |
added DBIx::Custom::Guides
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); |
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C<append> is string appending to end of SQL. |
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Following SQL is executed. |
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update pod
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select * book where author = ? for update; |
added DBIx::Custom::Guides
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C<appned> is also used at C<insert()>, C<update()>, C<update_all()> |
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C<delete()>, C<delete_all()>, and C<select()>. |
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=head3 C<execute()> SQL |
added DBIx::Custom::Guides
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update pod
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use C<execute()> to execute SQL |
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348 |
$dbi->execute("select * from book;"); |
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Process tag and execute SQL. |
update pod
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$dbi->execute( |
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"select * from book {= title} and {= author};" |
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param => {title => 'Perl', author => 'Ken'} |
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); |
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update pod
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357 |
Following SQL is executed. |
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359 |
select * from book title = ? and author = ?; |
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update pod
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Values of title and author is embbdeded into placeholder. |
update pod
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update pod
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See L<5. Tag/"5. Tag"> about tag. |
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You don't have to wirte last semicolon in C<execute()>. |
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$dbi->execute('select * from book'); |
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=head2 3. �s�̃t�F�b�` |
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C<select()>���\�b�h�̖߂�l��L<DBIx::Custom::Result>�I�u�W�F�N�g�ł��B |
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372 |
L<DBIx::Custom::Result>�ɂ͍s��t�F�b�`���邽�߂̂��܂��܂ȃ��\�b�h�� |
|
373 |
�p�ӂ���Ă��܂��B |
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375 |
=head3 1�s�Ât�F�b�`(�z��) C<fetch()> |
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��s�t�F�b�`���Ĕz��̃��t�@�����X�Ɋi�[����ɂ�C<fetch()>��g�p���܂��B |
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378 | |
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while (my $row = $result->fetch) { |
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my $title = $row->[0]; |
381 |
my $author = $row->[1]; |
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added DBIx::Custom::Guides
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382 |
} |
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update pod
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384 |
while���[�v��g��āA���ׂĂ̍s��擾���邱�Ƃ��ł��܂��B |
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386 |
=head3 �ŏ��̍s�����t�F�b�`(�z��) C<fetch_first()> |
|
387 | ||
388 |
��s�����t�F�b�`���Ĕz��̃��t�@�����X�Ɋi�[����ɂ�C<fetch_first()> |
|
389 |
��g�p���܂��B |
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added DBIx::Custom::Guides
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391 |
my $row = $result->fetch_first; |
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update pod
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��s�̃t�F�b�`���I������͂���ȏ�t�F�b�`�ł��Ȃ��Ȃ�܂��B |
394 |
���I�ɂ�1�s�̃t�F�b�`���I������� |
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395 |
�X�e�[�g�����g�n���h����C<finish()>����s����܂��B |
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added DBIx::Custom::Guides
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update pod
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=head3 �����s��Ƀt�F�b�`(�z��) C<fetch_multi()> |
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399 |
�����s��t�F�b�`���Ĕz��̃��t�@�����X��v�f�Ɏ��� |
|
400 |
�z��̃��t�@�����X�Ɋi�[����ɂ�C<fetch_multi()>��g�p���܂��B |
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402 |
while (my $rows = $result->fetch_multi(2)) { |
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403 |
my $title0 = $rows->[0][0]; |
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my $author0 = $rows->[0][1]; |
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my $title1 = $rows->[1][0]; |
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407 |
my $author1 = $rows->[1][1]; |
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added DBIx::Custom::Guides
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408 |
} |
update pod
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��ɂ͎��o�������s����w�肵�܂��B |
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�w�肵���s��i�[�������̂悤�ȃf�[�^��擾�ł��܂��B |
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[ |
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415 |
['Perl', 'Ken'], |
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416 |
['Ruby', 'Mark'] |
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417 |
] |
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=head3 ���ׂĂ̍s��t�F�b�`(�z��) C<fetch_all> |
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421 |
���ׂĂ̍s��t�F�b�`���Ĕz��̃��t�@�����X��v�f�Ɏ��� |
|
422 |
�z��̃��t�@�����X�Ɋi�[����ɂ�C<fetch_all()>��g�p���܂��B |
|
added DBIx::Custom::Guides
|
423 | |
424 |
my $rows = $result->fetch_all; |
|
425 | ||
update pod
|
426 |
���ׂĂ̍s��i�[�������̂悤�ȃf�[�^��擾�ł��܂��B |
427 | ||
428 |
[ |
|
429 |
['Perl', 'Ken'], |
|
430 |
['Ruby', 'Mark'] |
|
431 |
] |
|
432 | ||
433 |
=head3 1�s�Ât�F�b�`(�n�b�V��) C<fetch_hash()> |
|
434 | ||
435 |
��s�t�F�b�`���ăn�b�V���̃��t�@�����X�Ɋi�[����ɂ�C<fetch_hash()>��g�p���܂��B |
|
added DBIx::Custom::Guides
|
436 | |
437 |
while (my $row = $result->fetch_hash) { |
|
438 |
my $title = $row->{title}; |
|
439 |
my $author = $row->{author}; |
|
440 |
} |
|
441 | ||
update pod
|
442 |
=head3 �ŏ��̍s�����t�F�b�`(�n�b�V��) C<fetch_hash_first()> |
443 | ||
444 |
��s�����t�F�b�`���ăn�b�V���̃��t�@�����X�Ɋi�[����ɂ� |
|
445 |
C<fetch_hash_first()>��g�p���܂��B |
|
added DBIx::Custom::Guides
|
446 | |
447 |
my $row = $result->fetch_hash_first; |
|
update pod
|
448 | |
449 |
��s�̃t�F�b�`���I������͂���ȏ�t�F�b�`�ł��Ȃ��Ȃ�܂��B |
|
450 |
���I�ɂ�1�s�̃t�F�b�`���I������� |
|
451 |
�X�e�[�g�����g�n���h����C<finish()>����s����܂��B |
|
452 | ||
453 |
=head3 �����s��Ƀt�F�b�`(�n�b�V��) C<fetch_hash_multi()> |
|
454 | ||
455 |
�����s��t�F�b�`���ăn�b�V���̃��t�@�����X��v�f�Ɏ��� |
|
456 |
�z��̃��t�@�����X�Ɋi�[����ɂ�C<fetch_hash_multi()> |
|
457 |
��g�p���܂��B |
|
added DBIx::Custom::Guides
|
458 | |
459 |
while (my $rows = $result->fetch_hash_multi(5)) { |
|
update pod
|
460 |
my $title0 = $rows->[0]{title}; |
461 |
my $author0 = $rows->[0]{author}; |
|
462 |
my $title1 = $rows->[1]{title}; |
|
463 |
my $author1 = $rows->[1]{author}; |
|
added DBIx::Custom::Guides
|
464 |
} |
update pod
|
465 | |
466 |
��ɂ͎��o�������s����w�肵�܂��B |
|
467 | ||
468 |
�w�肵���s��i�[�������̂悤�ȃf�[�^��擾�ł��܂��B |
|
469 | ||
470 |
[ |
|
471 |
{title => 'Perl', author => 'Ken'}, |
|
472 |
{title => 'Ruby', author => 'Mark'} |
|
473 |
] |
|
474 | ||
475 |
=head3 ���ׂĂ̍s��t�F�b�`(�n�b�V��) C<fetch_hash_all()> |
|
476 | ||
477 |
���ׂĂ̍s��t�F�b�`���ăn�b�V���̃��t�@�����X��v�f�Ɏ��� |
|
478 |
�z��̃��t�@�����X�Ɋi�[����ɂ�C<fetch_hash_all()> |
|
479 |
��g�p���܂��B |
|
added DBIx::Custom::Guides
|
480 | |
481 |
my $rows = $result->fetch_hash_all; |
|
482 | ||
update pod
|
483 |
���ׂĂ̍s��i�[�������̂悤�ȃf�[�^��擾�ł��܂��B |
484 | ||
485 |
[ |
|
486 |
{title => 'Perl', author => 'Ken'}, |
|
487 |
{title => 'Ruby', author => 'Mark'} |
|
488 |
] |
|
489 | ||
490 |
=head3 �X�e�[�g�����g�n���h�� C<sth()> |
|
491 | ||
492 |
�X�e�[�g�����g�n���h���ɒ��ڃA�N�Z�X�������ꍇ�� |
|
493 |
<sth>�Ŏ擾���邱�Ƃ��ł��܂��B |
|
added DBIx::Custom::Guides
|
494 | |
495 |
my $sth = $result->sth; |
|
496 | ||
update pod
|
497 |
�t�F�b�`�̃p�t�H�[�}���X���p�������Ȃ��Ƃ��ɂ́A |
498 |
�X�e�[�g�����g�n���h������ |
|
499 |
���p�ł��鑬�x�̑������\�b�h�𗘗p���邱�Ƃ��ł��܂��B |
|
500 | ||
501 |
=head2 4. �t�B���^�����O |
|
502 | ||
503 |
�f�[�^�x�[�X�Ƀf�[�^��o�^����Ƃ���f�[�^�x�[�X����f�[�^��擾���� |
|
504 |
�Ƃ��Ɏ����I�ɒl�̕ϊ���s�������ꍇ�������Ǝv���܂��B |
|
505 |
���Ƃ��A��t��\�������̏ꍇ�́A |
|
506 |
�f�[�^�x�[�X�ɓo�^����ꍇ��L<Time::Piece>�I�u�W�F�N�g���� |
|
507 |
�f�[�^�x�[�X�̓�t�̃t�H�[�}�b�g�ɁA |
|
508 |
�f�[�^�x�[�X����f�[�^��擾����Ƃ��́A���̋t��s����ƕ֗��ł��B |
|
509 | ||
510 |
=head3 �t�B���^�̓o�^ C<register_filter()> |
|
511 | ||
512 |
�t�B���^��o�^����ɂ�C<register_filter()>��g�p���܂��B |
|
513 | ||
514 |
$dbi->register_filter( |
|
515 |
# Time::Piece object to DATE format |
|
516 |
tp_to_date => sub { |
|
517 |
my $date = shift; |
|
518 | ||
519 |
return '0000-00-00' unless $tp; |
|
520 |
return $tp->strftime('%Y-%m-%d'); |
|
521 |
}, |
|
522 |
|
|
523 |
# DATE to Time::Piece object |
|
524 |
date_to_tp => sub { |
|
525 |
my $date = shift; |
|
526 | ||
527 |
return if $date eq '0000-00-00'; |
|
528 |
return Time::Piece->strptime($date, '%Y-%m-%d'); |
|
529 |
}, |
|
530 |
); |
|
added DBIx::Custom::Guides
|
531 | |
update pod
|
532 |
�o�^�����t�B���^��C<apply_filter()>�Ȃǂŗ��p���邱�Ƃ��ł��܂��B |
added DBIx::Custom::Guides
|
533 | |
update pod
|
534 |
=head3 �t�B���^�̓K�p C<apply_filter()> |
added DBIx::Custom::Guides
|
535 | |
update pod
|
536 |
�쐬�����t�B���^��K�p����ɂ́AC<apply_filter()>��g�p���܂��B |
537 | ||
538 |
$dbi->apply_filter('book', |
|
539 |
issue_date => {out => 'tp_to_date', in => 'date_to_tp'}, |
|
540 |
first_issue_date => {out => 'tp_to_date', in => 'date_to_tp'} |
|
added DBIx::Custom::Guides
|
541 |
); |
542 | ||
update pod
|
543 |
����̓e�[�u�����ł��B����ȍ~�́A�ƃt�B���^���[���̃y�A��L�q���܂��B |
544 |
�t�B���^���[����out�ɂ́A�f�[�^�x�[�X�Ƀf�[�^�𑗐M����Ƃ��ɓK�p����t�B���^��A |
|
545 |
�t�B���^���[����in�ɂ́A�f�[�^�x�[�X����f�[�^��擾����Ƃ��ɓK�p����t�B���^�� |
|
546 |
�L�q���܂��Bout���f�[�^�x�[�X�ɑ��M������Ain���f�[�^�x�[�X������o�����ł��B |
|
547 |
�t�B���^�ɂ́AC<register_filter>�œo�^�����t�B���^���̑��ɁA�R�[�h���t�@�����X�� |
|
548 |
�w�肷�邱�Ƃ�ł��܂��B |
|
549 | ||
550 |
issue_date => {out => sub { ... }, in => sub { ... }} |
|
551 | ||
552 |
�K�p���ꂽ�t�B���^��C<insert()>�AC<update()>�AC<update_all()>�AC<delete()>�A |
|
553 |
C<delete_all()>�AC<select()>�ŗL��ɂȂ�܂��B |
|
554 | ||
555 |
my $tp = Time::Piece->strptime('2010/10/14', '%Y/%m/%d'); |
|
556 |
my $result = $dbi->select(table => 'book', where => {issu_date => $tp}); |
|
557 | ||
558 |
�f�[�^�x�[�X�Ƀf�[�^�����M�����Ƃ��ɁAL<Time::Piece>�I�u�W�F�N�g�� |
|
559 |
�f�[�^�x�[�X�̓�t�̃t�H�[�}�b�g�u2010-10-14�v�ɕϊ�����܂��B |
|
560 | ||
561 |
�܂��t�Ƀf�[�^��t�F�b�`����Ƃ��ɂ́A�f�[�^�x�[�X�̓�t�̃t�H�[�}�b�g�� |
|
562 |
�^�C���s�[�X�I�u�W�F�N�g�ɕϊ�����܂��B |
|
563 | ||
564 |
my $row = $resutl->fetch_hash_first; |
|
565 |
my $tp = $row->{issue_date}; |
|
566 | ||
567 |
���̂悤�Ȏ����I�Ɏ�s�����t�B���^��o�^�ł��邱�Ƃ�L<DBIx::Custom>�� |
|
568 |
����̂ЂƂł��B |
|
added DBIx::Custom::Guides
|
569 | |
update pod
|
570 |
C<apply_filter()>�œK�p���ꂽ�t�B���^�̓e�[�u�������܂ޗɑ��Ă�L��ł��B |
571 | ||
572 |
$dbi->select( |
|
573 |
table => 'book', |
|
574 |
where => {'book.title' => 'Perl', 'book.author' => 'Ken'} |
|
575 |
); |
|
576 | ||
577 |
�e�[�u�����ʂ���K�v������Ƃ��ɕ֗��ȋ@�\�ł��B |
|
578 | ||
579 |
=head3 �ʂ̃t�B���^�̓K�p C<filter> |
|
580 | ||
581 |
C<apply_filter()>��g��čŏ��ɂ��ׂẴe�[�u���̗�ɂ��� |
|
582 |
�t�B���^���`���邱�Ƃ�ł��܂����A |
|
583 |
�ʂɃt�B���^��K�p���邱�Ƃ�ł��܂��B |
|
584 |
�ʂ̃t�B���^��C<apply_filter()>�œK�p�����t�B���^��㏑���܂��B |
|
585 |
�ʂ̃t�B���^��SQL��as��g��āA��̕ʖ���쐬����K�v������ꍇ�Ɋ��܂��B |
|
586 | ||
587 |
�f�[�^�x�[�X�ɑ��M����ꍇ�ɁA�ʂ̃t�B���^��K�p����ɂ́A�e���\�b�h�� |
|
588 |
C<filter>�I�v�V������g�p���܂��B�ʂ̃t�B���^�́AC<insert()>�AC<update()>�A |
|
589 |
C<update_all()>�AC<delete()>�AC<delete_all()>�AC<select()>�AC<execute()> |
|
590 |
�Ŏg�p���邱�Ƃ��ł��܂��B |
|
591 | ||
592 |
C<insert()>�̗����܂��B |
|
593 | ||
594 |
$dbi->insert( |
|
595 |
table => 'book', |
|
596 |
param => {issue_date => $tp, first_issue_date => $tp}, |
|
597 |
filter => {issue_date => 'tp_to_date', first_issue_date => 'tp_to_date'} |
|
598 |
); |
|
added DBIx::Custom::Guides
|
599 | |
update pod
|
600 |
C<execute()>�̗����܂��B |
601 | ||
602 |
my $sql = <<"EOS"; |
|
603 |
select YEAR(issue_date) as issue_year |
|
604 |
from book |
|
605 |
where YEAR(issue_date) = {? issue_year} |
|
606 |
EOS |
|
607 |
|
|
added DBIx::Custom::Guides
|
608 |
my $result = $dbi->execute( |
update pod
|
609 |
$sql, |
610 |
param => {issue_year => '2010'}, |
|
611 |
filter => {issue_year => 'tp_to_year'} |
|
added DBIx::Custom::Guides
|
612 |
); |
613 | ||
update pod
|
614 |
�����C<filter>��g���ǂ������ł��Bissue_date�̕ϊ��ɂ��Ă�C<apply_filter()> |
615 |
�œo�^���Ă���̂ł����A�V�����쐬������ł���issue_year�ɂ��ẮA |
|
616 |
���̕ϊ���o�^����Ă��܂���B�ł��̂ŁA�ʂɃt�B���^��ݒ肵�Ă��܂��B |
|
added DBIx::Custom::Guides
|
617 | |
update pod
|
618 |
�܂����ɍs��t�F�b�`����Ƃ��ɂ�ʂ̃t�B���^��K�p���邱�Ƃ��ł��܂��B |
619 |
�t�B���^��K�p����ɂ́A |
|
620 |
C<DBIx::Custom::Result>�N���X��C<filter>���\�b�h��g�p���܂��B |
|
added DBIx::Custom::Guides
|
621 | |
update pod
|
622 |
$result->filter(issue_year => 'year_to_tp'); |
added DBIx::Custom::Guides
|
623 | |
update pod
|
624 |
�p�ɂɗ��p����̂ł���A�ʂɓo�^�������C<apply_filter()>�œo�^ |
625 |
���Ă������ق����֗��ł��傤�BC<apply_filter()>�͑��݂��Ȃ���ɑ��Ă� |
|
626 |
�t�B���^��K�p�ł��邩��ł��B |
|
627 | ||
628 |
$dbi->apply_filter('book', |
|
629 |
'issue_year' => {out => 'tp_to_year', in => 'year_to_tp'} |
|
630 |
); |
|
631 | ||
632 |
=head3 �ŏI�o�͂̂��߂̃t�B���^�����O C<end_filter()> |
|
633 | ||
634 |
C<DBIx::Custom::Result>�ł͂���ɍŌ�ɂ���x�A�t�B���^��lj�� |
|
635 |
�o�^���邱�Ƃ��ł��܂��B���Ƃ���HTML�ɏo�͂������ꍇ�ɁATime::Piece |
|
636 |
�I�u�W�F�N�g����ǂ݂₷���L�q�ɕϊ����邱�Ƃ��ł��܂��B |
|
637 |
�Ō�̃t�B���^��o�^����ɂ́AC<end_filter()>��g�p���܂��B |
|
638 | ||
639 |
$result->end_filter(issue_date => sub { |
|
640 |
my $tp = shift; |
|
641 |
|
|
642 |
return '' unless $tp; |
|
643 |
return $tp->strftime('%Y/%m/%d %h:%m:%s (%a)'); |
|
644 |
}); |
|
645 | ||
646 |
��t��₷���`�Ƀt�H�[�}�b�g���邱�Ƃ��ł��܂��B |
|
647 | ||
648 |
�t�B���^�̓t�F�b�`��s���O�ɓo�^���Ă����K�v�����邱�Ƃ� |
|
649 |
���ӂ��Ă��������B |
|
650 | ||
651 |
$result->filter(...); |
|
652 |
$result->end_filter(...); |
|
653 |
my $row = $result->fetch_hash_first; |
|
654 | ||
655 |
=head3 ��̏���Ƀt�B���^��K�p���� C<each_column()> |
|
656 | ||
657 |
��t�^�̗�͎蓮�Őݒ肵�Ȃ��Ă�A�����I�ɐݒ�ł���ƕ֗��ł��B |
|
658 |
���̂��߂Ƀf�[�^�x�[�X�̃e�[�u���̗�̂��ׂĂ̏��� |
|
659 |
���Ԃɏ������邽�߂�C<each_column()>������܂��B |
|
660 | ||
661 |
$dbi->each_column( |
|
662 |
sub { |
|
663 |
my ($self, $table, $column, $info) = @_; |
|
664 |
|
|
665 |
my $type = $info->{TYPE_NAME}; |
|
666 |
|
|
667 |
my $filter = $type eq 'DATE' ? {out => 'tp_to_date', in => 'date_to_tp'} |
|
668 |
: $type eq 'DATETIME' ? {out => 'tp_to_datetime', in => 'datetime_to_tp'} |
|
669 |
: undef; |
|
670 |
|
|
671 |
$self->apply_filter($table, $column, $filter) |
|
672 |
if $filter; |
|
673 |
} |
|
674 |
); |
|
675 | ||
676 |
each_column�̓R�[���o�b�N����܂��B�R�[���o�b�N�̈�� |
|
677 |
���Ԃ�L<DBIx::Custom>�I�u�W�F�N�g�A�e�[�u�����A�A��̏��ł��B |
|
678 |
��̌^���̏����ƂɎ����I�ɁA�t�B���^��K�p���Ă��܂��B |
|
679 | ||
680 |
�ЂƂ̒��ӓ_�Ƃ��ăR�[���o�b�N�̒�����A�R�[���o�b�N�̊O�� |
|
681 |
�̕ϐ���Q�Ƃ��Ȃ��悤�ɒ��ӂ��Ă��������Beach_column�� |
|
682 |
���X1����s����邾���Ȃ̂ŁA�قƂ�ǂ̏ꍇ��肠��܂��A |
|
683 |
�z�Q�Ƃɂ�郁�������[�N���������Ă��܂��\�����Ă��邩��ł��B |
|
684 | ||
685 |
=head2 5. �^�O |
|
686 | ||
687 |
=head3 �^�O�̋@�\ |
|
688 | ||
689 |
L<DBIx::Custom>��SQL�̒��Ƀ^�O�ߍ��ދ@�\���Ă��܂��B |
|
690 | ||
691 |
select * from book where {= title} and {like author}; |
|
692 | ||
693 |
{= title}��{like author}�̕������^�O�ł��B�^�O�͎��̂悤�Ȍ`�� |
|
694 |
����܂��B |
|
695 | ||
696 |
{�^�O�� ��1 ��2 ...} |
|
added DBIx::Custom::Guides
|
697 |
|
update pod
|
698 |
�^�O��C<{>�Ŏn�܂�AC<}>�ŏI���܂��B�ŏ���C<{>�ƃ^�O���̊� |
699 |
�ɂ͋�}��Ȃ��悤���ӂ��Ă��������B |
|
700 | ||
701 |
�^�O�̋@�\�̂��߂�C<{>��C<}>�͗\���ɂȂ�Ă��܂��B |
|
702 |
�����p�������ꍇ�͒��O��\����ăG�X�P�[�v��s���K�v������܂��B |
|
703 | ||
704 |
select from book \\{ ... \\} |
|
705 | ||
706 |
C<\>���̂�Perl�̃G�X�P�[�v�����ł��̂ŁA |
|
707 |
�G�X�P�[�v����ꍇ��C<\>����K�v�ɂȂ�Ƃ����_�ɒ��ӂ��Ă��������B |
|
708 | ||
709 |
��L�̃^�O��SQL����s�����O�Ɏ���SQL�ɓW�J����܂��B |
|
710 | ||
711 |
select * from book where title = ? and author like ?; |
|
712 | ||
713 |
�^�O��܂�SQL���s����ɂ�C<execute()>��g�p���܂��B |
|
714 | ||
715 |
my $sql = "select * from book where {= author} and {like title};" |
|
716 |
$dbi->execute($sql, param => {title => 'Perl', author => '%Ken%'}); |
|
717 | ||
718 |
C<param>�I�v�V������g��āA�v���[�X�z���_�ɖ��ߍ��݂����l�� |
|
719 |
�n�b�V�����t�@�����X�Ŏw�肷�邱�Ƃ��ł��܂��B |
|
720 | ||
721 |
���̃��\�b�h�Ɠ��l��C<execute()>�ɂ����Ă�C<filter>��w�肷�邱�Ƃ��ł��܂��B |
|
722 | ||
723 |
$dbi->execute($sql, param => {title => 'Perl', author => '%Ken%'} |
|
724 |
filter => {title => 'to_something'); |
|
725 | ||
726 |
C<execute>�̂ЂƂ̒��ӓ_�Ƃ��Ă�C<apply_filter()>�œK�p���ꂽ�t�B���^ |
|
727 |
�̓f�t�H���g�ł͗L��ł͂Ȃ��Ƃ������Ƃɒ��ӂ��Ă��������B |
|
728 |
C<apply_filter()>�œK�p���ꂽ�t�B���^��L��ɂ���ɂ́A |
|
729 |
C<table>��w�肷��K�v������܂��B |
|
730 | ||
731 |
$dbi->execute($sql, param => {title => 'Perl', author => '%Ken%'} |
|
732 |
table => ['book']); |
|
733 | ||
update pod
|
734 |
=head3 �^�O�ꗗ |
update pod
|
735 | |
736 |
L<DBIx::Custom>�ł͎��̃^�O���g�p�\�ł��B |
|
737 | ||
738 |
���̂悤�Ƀ^�O��g���SQL����\������̂�L<DBIx::Custom>�� |
|
739 |
����ł��B�ȉ��̃^�O�����p�\�ł��B |
|
740 | ||
update pod
|
741 |
=head4 C<?> |
update pod
|
742 | |
743 |
C<?>�^�O�͈ȉ��̂悤�ɓW�J����܂��B |
|
744 | ||
745 |
{? NAME} -> ? |
|
746 | ||
update pod
|
747 |
=head4 C<=> |
update pod
|
748 | |
749 |
C<=>�^�O�͈ȉ��̂悤�ɓW�J����܂��B |
|
750 | ||
751 |
{= NAME} -> NAME = ? |
|
752 | ||
update pod
|
753 |
=head4 C<E<lt>E<gt>> |
update pod
|
754 | |
755 |
C<E<lt>E<gt>>�^�O�͈ȉ��̂悤�ɓW�J����܂��B |
|
756 | ||
757 |
{<> NAME} -> NAME <> ? |
|
758 | ||
update pod
|
759 |
=head4 C<E<lt>> |
update pod
|
760 | |
761 |
C<E<lt>>�^�O�͈ȉ��̂悤�ɓW�J����܂��B |
|
762 | ||
763 |
{< NAME} -> NAME < ? |
|
764 | ||
update pod
|
765 |
=head4 C<E<gt>> |
update pod
|
766 | |
767 |
C<E<gt>>�^�O�͈ȉ��̂悤�ɓW�J����܂��B |
|
768 | ||
769 |
{> NAME} -> NAME > ? |
|
770 | ||
update pod
|
771 |
=head4 C<E<gt>=> |
update pod
|
772 | |
773 |
C<E<gt>=>�^�O�͈ȉ��̂悤�ɓW�J����܂��B |
|
774 | ||
775 |
{>= NAME} -> NAME >= ? |
|
776 | ||
update pod
|
777 |
=head4 C<E<lt>=> |
update pod
|
778 | |
779 |
C<E<lt>=>�^�O�͈ȉ��̂悤�ɓW�J����܂��B |
|
780 | ||
781 |
{<= NAME} -> NAME <= ? |
|
782 | ||
update pod
|
783 |
=head4 C<like> |
update pod
|
784 | |
785 |
C<like>�^�O�͈ȉ��̂悤�ɓW�J����܂��B |
|
786 | ||
787 |
{like NAME} -> NAME like ? |
|
788 | ||
update pod
|
789 |
=head4 C<in> |
update pod
|
790 | |
791 |
C<in>�^�O�͈ȉ��̂悤�ɓW�J����܂��B�v���[�X�z���_�� |
|
792 |
�����Ŏw�肷��K�v�����邱�Ƃɒ��ӂ��Ă��������B |
|
793 | ||
794 |
{in NAME COUNT} -> NAME in [?, ?, ..] |
|
795 | ||
update pod
|
796 |
=head4 C<insert_param> |
update pod
|
797 | |
798 |
C<insert_param>�^�O�͈ȉ��̂悤�ɓW�J����܂��B |
|
799 | ||
added DBIx::Custom::Guides
|
800 |
{insert_param NAME1 NAME2} -> (NAME1, NAME2) values (?, ?) |
update pod
|
801 | |
update pod
|
802 |
=head4 C<update_param> |
update pod
|
803 | |
804 |
C<update_param>�^�O�͈ȉ��̂悤�ɓW�J����܂��B |
|
805 | ||
added DBIx::Custom::Guides
|
806 |
{update_param NAME1 NAME2} -> set NAME1 = ?, NAME2 = ? |
807 | ||
update pod
|
808 |
=head3 �����̗�̈��� |
added DBIx::Custom::Guides
|
809 | |
update pod
|
810 |
�����̗��܂ރ^�O������ꍇ�ɂ�ASQL���s���邱�Ƃ��ł��܂��B |
811 |
���Ƃ��A��̓�t�Ŕ�r���Ȃ���Ȃ�Ȃ��ꍇ�� |
|
812 |
�l���Č��܂��傤�B |
|
added DBIx::Custom::Guides
|
813 | |
update pod
|
814 |
my $sql = "select * from table where {> date} and {< date};"; |
added DBIx::Custom::Guides
|
815 | |
update pod
|
816 |
���̂悤�ȏꍇ�͑Ή�����p�����[�^�̒l��z��̃��t�@�����X�ɂ��܂��B |
added DBIx::Custom::Guides
|
817 | |
update pod
|
818 |
my $dbi->execute($sql, param => {date => ['2010-10-01', '2012-02-10']}); |
added DBIx::Custom::Guides
|
819 | |
update pod
|
820 |
=head3 �^�O�̒lj� C<register_tag()> |
update pod
|
821 | |
822 |
L<DBIx::Custom>�ł̓^�O��Ǝ��ɒlj���邱�Ƃ��ł��܂��B |
|
823 |
�^�O��lj����ɂ�C<register_tag()>��g�p���܂��B |
|
824 | ||
825 |
$dbi->register_tag( |
|
826 |
'=' => sub { |
|
827 |
my $column = shift; |
|
828 |
|
|
829 |
return ["$column = ?", [$column]]; |
|
added DBIx::Custom::Guides
|
830 |
} |
831 |
); |
|
832 | ||
update pod
|
833 |
�����ł̓f�t�H���g��C<=>�^�O���ǂ̂悤�Ɏ������Ă��邩����Ă��܂��B |
834 |
�^�O��o�^������̈�̓^�O�̒��ɏ����ꂽ��ɂȂ�܂��B |
|
added experimental DBIx::Cus...
|
835 | |
update pod
|
836 |
{�^�O�� ��1 ��2} |
added experimental DBIx::Cus...
|
837 | |
update pod
|
838 |
C<=>�^�O�̏ꍇ�� |
cleanup
|
839 | |
update pod
|
840 |
{= title} |
added experimental DBIx::Cus...
|
841 | |
update pod
|
842 |
�Ƃ����`���ł�����A�T�u���[�`���ɂ�title�Ƃ����ЂƂ̗��킽��Ă��܂��B |
added experimental DBIx::Cus...
|
843 | |
update pod
|
844 |
�T�u���[�`���̖߂�l�ɂ͎��̌`���̔z��̃��t�@�����X��Ԃ��K�v������܂��B |
845 | ||
846 |
[ |
|
847 |
�W�J��̕�����, |
|
848 |
[�v���[�X�z���_�ɖ��ߍ��݂ɗ��p�����1, ��2, ...] |
|
849 |
] |
|
850 | ||
851 |
��ڂ̗v�f�͓W�J��̕�����ł��B���̗�ł� |
|
852 | ||
853 |
'title = ?' |
|
854 | ||
855 |
��Ԃ��K�v������܂��B |
|
856 | ||
857 |
��ڂ̗v�f�̓v���[�X�z���_�ɖ��ߍ��݂ɗ��p�����܂ޔz��� |
|
858 |
���t�@�����X�ł��B����̗�ł� |
|
859 | ||
860 |
['title'] |
|
861 | ||
862 |
��Ԃ��K�v������܂��B�����̃v���[�X�z���_��܂ޏꍇ�́A���̕����� |
|
863 |
�����ɂȂ�܂��BC<insert_param>�^�O��C<update_param>�^�O�� |
|
864 |
���̕�������ە����ɂȂ�Ă��܂��B |
|
865 | ||
866 |
��L��킹��� |
|
867 | ||
868 |
['title = ?', ['title']] |
|
added experimental DBIx::Cus...
|
869 |
|
update pod
|
870 |
��Ԃ��K�v������Ƃ������Ƃł��B |
added DBIx::Custom::Guides
|
871 | |
update pod
|
872 |
�^�O�̎���̑��̃T���v����L<DBIx::Custom::Tag>�̃\�[�X�R�[�h |
873 |
����ɂȂ�Ă݂Ă��������B |
|
added DBIx::Custom::Guides
|
874 | |
update pod
|
875 |
=head2 6. Where��̓��I�Ȑ��� |
876 | ||
877 |
=head3 Where��̓��I�Ȑ��� where() |
|
878 | ||
879 |
�����̌�����w�肵�āA�����s�������ꍇ������܂��B |
|
880 |
����3�̃P�[�X��where���l���Ă݂܂��傤�B |
|
881 |
���L�̂悤��where�傪�K�v�ɂȂ�܂��B |
|
882 | ||
883 |
title�̒l�����Ō�������ꍇ |
|
884 | ||
885 |
where {= title} |
|
886 | ||
887 |
author�̒l�����Ō�������ꍇ |
|
888 | ||
889 |
where {= author} |
|
890 | ||
891 |
title��author�̗���̒l�Ō�������ꍇ |
|
892 | ||
893 |
where {= title} and {=author} |
|
894 | ||
895 |
L<DBIx::Custom>�ł͓��I��Where��̐�����T�|�[�g���Ă��܂��B |
|
896 |
�܂�C<where()>��L<DBIx::Custom::Where>�I�u�W�F�N�g�����܂��B |
|
897 | ||
898 |
my $where = $dbi->where; |
|
899 | ||
900 |
����C<clause()>��g�p����where���L�q���܂��B |
|
901 | ||
902 |
$where->clause( |
|
903 |
['and', '{= title'}, '{= author}'] |
|
added DBIx::Custom::Guides
|
904 |
); |
905 | ||
update pod
|
906 |
clause�̎w���@�͎��̂悤�ɂȂ�܂��B |
907 | ||
908 |
['or' ���邢�� 'and', �^�O1, �^�O2, �^�O3] |
|
added DBIx::Custom::Guides
|
909 | |
update pod
|
910 |
����ɂ�or���邢��and��w�肵�܂��B����ȍ~�ɂ� |
911 |
������^�O��g��ċL�q���܂��B |
|
912 | ||
913 |
C<clause>�̎w��͓��q�ɂ��邱�Ƃ�ł��A����ɕ��G�ȏ� |
|
914 |
��L�q���邱�Ƃ�ł��܂��B |
|
915 | ||
916 |
['and', |
|
917 |
'{= title}', |
|
918 |
['or', '{= author}', '{like date}'] |
|
919 |
] |
|
920 | ||
921 |
���̂悤��C<clause>��ݒ肵�����C<param>�Ƀp�����[�^��w�肵�܂��B |
|
added DBIx::Custom::Guides
|
922 |
|
update pod
|
923 |
my $param => {title => 'Perl'}; |
924 |
$where->param($param); |
|
added DBIx::Custom::Guides
|
925 | |
update pod
|
926 |
���̗�ł�title�������p�����[�^�Ɋ܂܂�Ă��܂��B |
added DBIx::Custom::Guides
|
927 | |
update pod
|
928 |
���̌�C<to_string()>���s�����$param�Ɋ܂܂��p�����[�^���� |
929 |
where������邱�Ƃ��ł��܂��B |
|
930 | ||
931 |
my $where_clause = $where->to_string; |
|
932 | ||
933 |
�p�����[�^��title�����ł��̂ŁA���̂悤��where�傪��������܂��B |
|
934 | ||
935 |
where {= title} |
|
936 | ||
937 |
�܂�L<DBIx::Custom>�͕�����̕]����I�[�o�[���[�h���āAC<to_string()> |
|
938 |
��Ăяo���悤�ɂ��Ă��܂��̂ŁA���̂悤�ɂ���where������邱�Ƃ� |
|
939 |
�ł��܂��B |
|
940 | ||
941 |
my $where_clause = "$where"; |
|
942 | ||
943 |
�����SQL�̒���where��ߍ��ނƂ��ɂƂĂ�𗧂@�\�ł��B |
|
added DBIx::Custom::Guides
|
944 | |
update pod
|
945 |
=head3 ����̗�܂ޏꍇ |
check arguments of connect m...
|
946 | |
update pod
|
947 |
�^�O�̒��ɓ���̖��O���̂����݂����ꍇ�ł��I�� |
948 |
where���쐬���邱�Ƃ��ł��܂��B |
|
added experimental DBIx::Cus...
|
949 | |
update pod
|
950 |
���Ƃ��A�p�����[�^�Ƃ��ĊJ�n��t�ƏI����t��������Ƃ� |
951 |
�l���Ă݂Ă��������B |
|
added experimental DBIx::Cus...
|
952 | |
update pod
|
953 |
my $param = {start_date => '2010-11-15', end_date => '2011-11-21'}; |
added experimental DBIx::Cus...
|
954 | |
update pod
|
955 |
�܂��J�n��t�ƏI����t�̕Е���A�ǂ������Ȃ��ꍇ���邩����܂���B |
added experimental DBIx::Cus...
|
956 | |
update pod
|
957 |
���̏ꍇ�͎��̂悤�ȃp�����[�^�ɕϊ����邱�ƂőΉ����邱�Ƃ��ł��܂��B |
958 | ||
959 |
my $p = {date => ['2010-11-15', '2011-11-21']}; |
|
960 | ||
961 |
�l���z��̃��t�@�����X�ɂȂ�Ă��邱�Ƃɒ��ڂ��Ă��������B���̂悤�ɂ���� |
|
962 |
�����̗��܂ރ^�O�ɏ��Ԃɖ��ߍ��ނ��Ƃ��ł��܂��B |
|
963 | ||
964 |
$where->clause( |
|
965 |
['and', '{> date}', '{< date}'] |
|
added experimental DBIx::Cus...
|
966 |
); |
update pod
|
967 |
$where->param($p); |
968 | ||
969 |
�܂��J�n��t�����݂��Ȃ��ꍇ�͎��̂悤�ȃf�[�^��쐬���܂��B |
|
970 | ||
971 |
my $p = {date => [$dbi->not_exists, '2011-11-21']}; |
|
972 | ||
973 |
L<DBIx::Custom>��C<not_exists>��DBIx::Custom::NotExists�I�u�W�F�N�g�� |
|
974 |
�擾�ł��܂��B����͑Ή�����l�����݂��Ȃ����Ƃ�����߂̂�̂ł��B |
|
975 | ||
976 |
�܂��I����t�����݂��Ȃ��ꍇ�͎��̂悤�ȃf�[�^��쐬���܂��B |
|
977 | ||
978 |
my $p = {date => ['2010-11-15']}; |
|
979 | ||
980 |
�ǂ�����݂��Ȃ��ꍇ�͎��̂悤�ȃf�[�^��쐬���܂��B |
|
981 | ||
982 |
my $p = {date => []}; |
|
983 | ||
984 |
��������̂ň�ԊȒP�ɍ쐬�ł��郍�W�b�N����Ă����܂��B |
|
985 | ||
986 |
my @date; |
|
987 |
push @date, exists $param->{start_date} ? $param->{start_date} |
|
988 |
: $dbi->not_exists; |
|
989 |
push @date, $param->{end_date} if exists $param->{end_date}; |
|
990 |
my $p = {date => \@date}; |
|
991 | ||
992 |
=head3 C<select()>�Ƃ̘A�g |
|
993 | ||
994 |
L<DBIx::Custom::Where>�I�u�W�F�N�g�� |
|
995 |
C<select()>��C<where>�ɒ��ړn�����Ƃ� |
|
996 |
�ł��܂��B |
|
997 |
|
|
998 |
my $where = $dbi->where; |
|
999 |
$where->clause(...); |
|
1000 |
$where->param($param); |
|
1001 |
my $result = $dbi->select(table => 'book', where => $where); |
|
1002 | ||
1003 |
���邢��C<update()>�AC<delete()>��where�Ɏw�肷�邱�Ƃ�\�ł��B |
|
1004 | ||
1005 |
=head3 C<execute()>�Ƃ̘A�g |
|
1006 | ||
1007 |
C<execute()>�Ƃ̘A�g�ł��BSQL��쐬����Ƃ��ɖ��ߍ��ނ��Ƃ��ł��܂��B |
|
added experimental DBIx::Cus...
|
1008 | |
1009 | ||
update pod
|
1010 |
my $where = $dbi->where; |
1011 |
$where->clause(...); |
|
1012 |
$where->param($param); |
|
1013 | ||
1014 |
my $sql = <<"EOS" |
|
1015 |
select * from book; |
|
1016 |
$where |
|
1017 |
EOS |
|
1018 | ||
1019 |
$dbi->execute($sql, param => $param); |
|
1020 | ||
1021 |
=head2 7. �e�[�u�����f�� |
|
1022 | ||
1023 |
=head3 �e�[�u���I�u�W�F�N�g�̍쐬 C<table()> |
|
1024 | ||
1025 |
L<DBIx::Custom>�̓��W�b�N�Ƃ��ăe�[�u���𒆐S�ɂ����� |
|
1026 |
���f���̍쐬��x�����܂��B |
|
1027 | ||
1028 |
�A�v���P�[�V�����̃��W�b�N��L�q����Ƃ��ɁA���̃��W�b�N�� |
|
1029 |
�f�[�^�x�[�X�̃e�[�u���ɂ����邱�Ƃ́ARDBMS�𗘗p���� |
|
1030 |
���f���ł���A�R�[�h�̏d�����Ȃ� |
|
1031 |
�킩��₷����̂ɂȂ�܂��B |
|
1032 | ||
1033 |
�e�[�u���I�u�W�F�N�g������ɂ�C<table()>��g�p���܂��B |
|
1034 | ||
1035 |
my $table = $dbi->table('book'); |
|
1036 | ||
1037 |
��ۂɃf�[�^�x�[�X�Ƀe�[�u���͑��݂��Ă���K�v�͂���܂���B |
|
1038 |
����͉��z�I�ȃe�[�u���I�u�W�F�N�g�ł��B����� |
|
1039 |
L<DBIx::Customm::Table>�I�u�W�F�N�g�ɂȂ�܂��B |
|
1040 | ||
1041 |
�e�[�u���I�u�W�F�N�g�����C<insert()>�AC<update()>�AC<update_all()>�A |
|
1042 |
C<delete()>�AC<delete_all()>�AC<select()>�Ȃǂ̃��\�b�h�Ăяo�����Ƃ��ł��܂��B |
|
1043 |
L<DBIx::Custom>�ƈقȂ�Ƃ���́AC<table>��K������w�肷��K�v�� |
|
1044 |
�Ȃ��Ƃ������Ƃł��B |
|
1045 | ||
1046 |
$table->insert(param => $param); |
|
1047 | ||
1048 |
C<table���̒l�͎����I��book�ɐݒ肳��܂��B |
|
1049 | ||
1050 |
�܂��e�[�u���I�u�W�F�N�g�ɂ͓Ǝ��̃��\�b�h��lj���邱�Ƃ��ł��܂��B |
|
1051 | ||
1052 |
$table->method( |
|
1053 |
register => sub { |
|
added experimental DBIx::Cus...
|
1054 |
my $self = shift; |
update pod
|
1055 |
my $table_name = $self->name; |
1056 |
# something |
|
added experimental DBIx::Cus...
|
1057 |
}, |
update pod
|
1058 |
list => sub { |
1059 |
my $self = shift; |
|
1060 |
my $table_name = $self->name; |
|
1061 |
# something |
|
1062 |
} |
|
1063 |
); |
|
1064 | ||
1065 |
���\�b�h�ɓn���������L<DBIx::Custom::Table>�I�u�W�F�N�g�ł��B |
|
1066 |
C<name()>��g�p���āA�e�[�u������擾���邱�Ƃ��ł��܂��B |
|
1067 | ||
1068 |
���̂悤�ɂ��ēo�^�������\�b�h�͒��ڌĂяo�����Ƃ��ł��܂��B |
|
1069 | ||
1070 |
$table->register(...); |
|
1071 |
$table->list(...); |
|
1072 | ||
1073 |
�܂��e�[�u����p�̃��\�b�h��I�[�o�[���C�h���č쐬���邱�Ƃ�ł��܂��B |
|
1074 | ||
1075 |
$table->method( |
|
1076 |
insert => sub { |
|
added experimental DBIx::Cus...
|
1077 |
my $self = shift; |
1078 |
|
|
update pod
|
1079 |
$self->base_insert(...); |
1080 |
|
|
1081 |
# something |
|
added experimental DBIx::Cus...
|
1082 |
} |
1083 |
); |
|
1084 | ||
update pod
|
1085 |
��Ƃ�Ƒ��݂��Ă���C<insert()>��ĂԂɂ�C<base_$method>�Ƃ��܂��BL<DBIx::Custom::Table> |
1086 |
�̃I�[�o�[���C�h�̋@�\�͊ȈՓI�Ȃ�̂ł����A�ƂĂ�֗��ł��B |
|
added experimental DBIx::Cus...
|
1087 | |
update pod
|
1088 |
=head2 �e�[�u���ŋ��L�̃��\�b�h�̓o�^ |
added experimental DBIx::Cus...
|
1089 | |
update pod
|
1090 |
���ׂẴe�[�u���Ń��\�b�h��L����ɂ�C<table>���\�b�h�Ńe�[�u����쐬����O�ɁA |
1091 |
C<base_table>�Ƀ��\�b�h��o�^���Ă����܂��B |
|
added experimental DBIx::Cus...
|
1092 | |
update pod
|
1093 |
$dbi->base_table->method( |
1094 |
count => sub { |
|
1095 |
my $self = shift; |
|
1096 |
return $self->select(column => ['count(*)']); |
|
1097 |
} |
|
1098 |
); |
|
added DBIx::Custom::Guides
|
1099 | |
update pod
|
1100 |
�܂��e�[�u�������L<DBIx::Custom>��L<DBI>�̂��ׂẴ��\�b�h��Ăяo�����Ƃ��ł��܂��B |
added DBIx::Custom::Guides
|
1101 | |
update pod
|
1102 |
# DBIx::Custom method |
1103 |
$table->execute($sql); |
|
1104 |
|
|
1105 |
# DBI method |
|
1106 |
$table->begin_work; |
|
1107 |
$table->commit; |
|
1108 | ||
1109 |
=head2 ��ʓI�ȃ��f���̍\�� |
|
added DBIx::Custom::Guides
|
1110 | |
update pod
|
1111 |
��ʓI�ɂ́AL<DBIx::Custom>��p�����ăR���X�g���N�^�̒��ɁA���f����쐬 |
1112 |
����̂��悢�ł��傤�B |
|
added DBIx::Custom::Guides
|
1113 | |
update pod
|
1114 |
package MyDBI; |
1115 |
|
|
1116 |
use base 'DBIx::Custom'; |
|
added DBIx::Custom::Guides
|
1117 |
|
update pod
|
1118 |
sub connect { |
1119 |
my $self = shift->SUPER::connect(@_); |
|
1120 |
|
|
1121 |
$self->base_table->method( |
|
1122 |
... => sub { ... } |
|
1123 |
); |
|
1124 |
|
|
1125 |
$self->table('book')->method( |
|
1126 |
insert_multi => sub { ... }, |
|
1127 |
... => sub { ... } |
|
1128 |
); |
|
1129 |
|
|
1130 |
$self->table('company')->method( |
|
1131 |
... => sub { ... }, |
|
1132 |
); |
|
1133 |
} |
|
1134 | ||
1135 |
���̂悤�ɂ��Ē�`���Ă����A���̂悤�ɗ��p���邱�Ƃ��ł��܂��B |
|
1136 | ||
1137 |
my $dbi = MyDBI->connect(...); |
|
1138 |
$dbi->table('book')->insert_multi(...); |
|
1139 | ||
1140 |
=head2 8. �p�t�H�[�}���X�̉�P |
|
1141 | ||
1142 |
=head3 �N�G���̍쐬 |
|
1143 | ||
1144 |
��C<insert()>���\�b�h��g�p���ăC���T�[�g���s�����ꍇ�A |
|
1145 |
�K�v�ȃp�t�H�[�}���X���Ȃ��ꍇ�����邩����܂���B |
|
1146 |
C<insert()>���\�b�h�́ASQL���ƃX�e�[�g�����g�n���h���� |
|
1147 |
����쐬���邽�߂ł��B |
|
1148 | ||
1149 |
���̂悤�ȏꍇ�́AC<query>�I�v�V������w�肷�邱�ƂŁA |
|
1150 |
�N�G����擾���邱�Ƃ��ł��܂��B |
|
1151 | ||
1152 |
my $query = $dbi->insert(table => 'book', param => $param, query => 1); |
|
1153 | ||
1154 |
�܂�C<create_query()>���\�b�h��g��ĔC�ӂ�SQL�̃N�G����쐬 |
|
1155 |
���邱�Ƃ�ł��܂��B |
|
1156 | ||
added DBIx::Custom::Guides
|
1157 |
my $query = $dbi->create_query( |
update pod
|
1158 |
"insert into book {insert_param title author};"; |
added DBIx::Custom::Guides
|
1159 |
); |
1160 | ||
update pod
|
1161 |
�߂�l��L<DBIx::Custom::Query>�I�u�W�F�N�g�ł��B |
1162 |
���̃I�u�W�F�N�g��SQL���ƃp�����[�^�o�C���h���̗� |
|
1163 |
�ێ����Ă��܂��B�܂��X�e�[�g�����g�n���h����ێ����Ă��܂��B |
|
added DBIx::Custom::Guides
|
1164 | |
1165 |
{ |
|
remove DBIx::Custom::Model
|
1166 |
sql => 'insert into book (title, author) values (?, ?);', |
update pod
|
1167 |
columns => ['title', 'author'], |
1168 |
sth => $sth |
|
added DBIx::Custom::Guides
|
1169 |
} |
1170 | ||
update pod
|
1171 |
�N�G���I�u�W�F�N�g��g��ČJ��Ԃ���s����ɂ�C<execute()>��g�p���܂��B |
added DBIx::Custom::Guides
|
1172 |
|
remove DBIx::Custom::Model
|
1173 |
my $params = [ |
added DBIx::Custom::Guides
|
1174 |
{title => 'Perl', author => 'Ken'}, |
1175 |
{title => 'Good days', author => 'Mike'} |
|
1176 |
]; |
|
1177 |
|
|
update pod
|
1178 |
foreach my $param (@$paramss) { |
1179 |
$dbi->execute($query, table => 'book', param => $input); |
|
added DBIx::Custom::Guides
|
1180 |
} |
1181 | ||
update pod
|
1182 |
C<execute>���\�b�h�̑���ɃN�G���I�u�W�F�g��n�����Ƃ��ł��܂��B |
1183 |
C<insert()>���\�b�h�������ł��B |
|
added DBIx::Custom::Guides
|
1184 | |
update pod
|
1185 |
���ӓ_������������܂��B����̓p�����[�^�̐��͕K�������łȂ��Ă͂Ȃ�Ȃ� |
1186 |
�Ƃ������Ƃł��B�ŏ���3�̃p�����[�^������n�����̂ɁA���̎�s�ł� |
|
1187 |
��̃p�����[�^��n���Ɨ\��Ȃ����ʂɂȂ�܂��B����� |
|
1188 |
���I�ɐ������ꂽSQL�Ɋ܂܂��v���[�X�z���_�̐����قȂ邩��ł��B |
|
1189 |
�܂�C<execute()>�ɂ��Ă͎����I�ɂ̓t�B���^���L��ɂȂ�Ȃ��̂ŁA |
|
1190 |
C<table>��w�肷��K�v�̂��邱�Ƃɒ��ӂ��Ă��������B |
|
1191 |
�{���ɕK�v�ȏꍇ�������p���Ă��������B |
|
added DBIx::Custom::Guides
|
1192 | |
update pod
|
1193 |
=head2 9. ���̑��̋@�\ |
added DBIx::Custom::Guides
|
1194 | |
update pod
|
1195 |
=head3 ���\�b�h�̓o�^ |
added DBIx::Custom::Guides
|
1196 | |
update pod
|
1197 |
���\�b�h��o�^����ɂ�C<method()>��g�p���܂��B |
added DBIx::Custom::Guides
|
1198 | |
update pod
|
1199 |
$dbi->method( |
1200 |
update_or_insert => sub { |
|
1201 |
my $self = shift; |
|
1202 |
# something |
|
1203 |
}, |
|
1204 |
find_or_create => sub { |
|
1205 |
my $self = shift; |
|
1206 |
# something |
|
1207 |
} |
|
1208 |
); |
|
1209 | ||
1210 |
<method()>�œo�^�������\�b�h�� |
|
1211 |
L<DBIx::Custom>�I�u�W�F�N�g���璼�ڌĂяo�����Ƃ��ł��܂��B |
|
1212 | ||
1213 |
$dbi->update_or_insert; |
|
1214 |
$dbi->find_or_create; |
|
1215 | ||
1216 |
=head3 ���ʃN���X�̕ύX |
|
added DBIx::Custom::Guides
|
1217 | |
update pod
|
1218 |
�K�v�Ȃ�Ό��ʃN���X��ύX���邱�Ƃ��ł��܂��B |
added DBIx::Custom::Guides
|
1219 | |
update pod
|
1220 |
package MyResult; |
added DBIx::Custom::Guides
|
1221 |
use base 'DBIx::Custom::Result'; |
1222 |
|
|
1223 |
sub some_method { ... } |
|
1224 | ||
1225 |
1; |
|
1226 |
|
|
1227 |
package main; |
|
1228 |
|
|
update pod
|
1229 |
use MyResult; |
added DBIx::Custom::Guides
|
1230 |
|
1231 |
my $dbi = DBIx::Custom->connect(...); |
|
update pod
|
1232 |
$dbi->result_class('MyResult'); |
added DBIx::Custom::Guides
|
1233 | |
update pod
|
1234 |
=head3 �L���b�V���O |
added DBIx::Custom::Guides
|
1235 | |
update pod
|
1236 |
�^�O�̓W�J���SQL�̓p�t�H�[�}���X�̗��R�̂��߂ɃL���b�V������܂��B |
1237 |
�����C<chace>�Őݒ�ł��A�f�t�H���g�ł̓L���b�V����s���ݒ�ł��B |
|
added DBIx::Custom::Guides
|
1238 | |
update pod
|
1239 |
$dbi->cache(1); |
added DBIx::Custom::Guides
|
1240 | |
update pod
|
1241 |
�L���b�V����@��C<cache_method>�Ƀ��\�b�h��w�肷�邱�Ƃ� |
1242 |
�ύX���邱�Ƃ��ł��܂��B |
|
1243 |
�f�[�^�̕ۑ��Ǝ擾�̂��߂̃��\�b�h���`���܂��B |
|
added DBIx::Custom::Guides
|
1244 | |
update pod
|
1245 |
�f�t�H���g�ł͎��̂悤�Ƀ�������ɃL���b�V����s����̂ɂȂ�Ă��܂��B |
1246 | ||
1247 |
$dbi->cache_method(sub { |
|
1248 |
sub { |
|
added DBIx::Custom::Guides
|
1249 |
my $self = shift; |
update pod
|
1250 |
|
1251 |
$self->{_cached} ||= {}; |
|
1252 |
|
|
1253 |
if (@_ > 1) { |
|
1254 |
# Set |
|
1255 |
$self->{_cached}{$_[0]} = $_[1] |
|
1256 |
} |
|
1257 |
else { |
|
1258 |
# Get |
|
1259 |
return $self->{_cached}{$_[0]} |
|
1260 |
} |
|
added DBIx::Custom::Guides
|
1261 |
} |
update pod
|
1262 |
}); |
1263 |
|
|
1264 |
����L<DBIx::Custom>�I�u�W�F�N�g�ł��B |
|
1265 |
����̓^�O�̓W�J�����O��SQL�ł��B |
|
1266 |
��O��̓^�O�̓W�J���SQL�ł��B |
|
added DBIx::Custom::Guides
|
1267 | |
update pod
|
1268 |
�����ō쐬����ꍇ�͑�O�����݂����ꍇ�̓L���b�V����ݒ肵�A |
1269 |
���݂��Ȃ�����ꍇ�̓L���b�V����擾�������� |
|
1270 |
�����������B |
|
added DBIx::Custom::Guides
|
1271 | |
update pod
|
1272 |
=cut |
added DBIx::Custom::Guides
|
1273 | |
pod fix
|
1274 |
=head1 EXAMPLES |
1275 | ||
1276 |
L<DBIx::Custom Wiki|https://github.com/yuki-kimoto/DBIx-Custom/wiki> - Many useful examples |
|
add examples
|
1277 | |
added DBIx::Custom::Guides
|
1278 |
=cut |