NAME

DBIx::Custom - DBI extension to execute insert, update, delete, and select easily

SYNOPSIS

  use DBIx::Custom;
  
  # Connect
  my $dbi = DBIx::Custom->connect(
    dsn => "dbi:mysql:database=dbname",
    user => 'ken',
    password => '!LFKD%$&',
    option => {mysql_enable_utf8 => 1}
  );

  # Insert 
  $dbi->insert({title => 'Perl', author => 'Ken'}, table  => 'book');
  
  # Update 
  $dbi->update({title => 'Perl', author => 'Ken'}, table  => 'book',
    where  => {id => 5});
  
  # Delete
  $dbi->delete(table  => 'book', where => {author => 'Ken'});

  # Select
  #   select title, author from book where author = ?
  my $result = $dbi->select(
    ['title', 'author'],
    table  => 'book',
    where  => {author => 'Ken'}
  );

  # Select, more complex
  #   select book.title as book.title,
  #     book.author as book.author,
  #     comnapy.name as company.name
  #   form book
  #     left outer join company on book.company_id = company.id
  #   where book.author = ?
  #   order by id limit 0, 5
  my $result = $dbi->select(
    [
      {book => [qw/title author/]},
      {company => ['name']}
    ],
    table  => 'book',
    where  => {'book.author' => 'Ken'},
    join => ['left outer join company on book.company_id = company.id'],
    append => 'order by id limit 0, 5'
  );
  
  # Get all rows or only one row
  my $rows = $result->all;
  my $row = $result->one;
  
  # Execute SQL.
  my $result = $dbi->execute(
    "select id from book where author = :author and title like :title",
    {author => 'ken', title => '%Perl%'}
  );

DESCRIPTION

DBIx::Custom is DBI wrapper module to execute SQL easily. This module have the following features.

Execute insert, update, delete, or select statement easily
Create where clause flexibly
Named place holder support
Model support
Connection manager support
Choice your favorite relational database management system, MySQL, SQLite, PostgreSQL, Oracle, Microsoft SQL Server, Microsoft Access, DB2 or anything,
Filtering by data type or column name
Create order by clause flexibly

WEB SITE

DBIx::Custom - Perl O/R Mapper

DOCUMENTS

DBIx::Custom Documents

DBIx::Custom API reference

ATTRIBUTES

async_conf EXPERIMENTAL

  my $async_conf = $dbi->async_conf;
  $dbi = $dbi->async_conf($conf);

Setting when async option is used.

  # MySQL
  $dbi->async_conf({
    prepare_attr => {async => 1},
    fh => sub { shift->dbh->mysql_fd }
    my $dbi = shift;
  });

prepare_attr is DBI's prepare method second argument, fh is callback that return file handle to watch.

connector

  my $connector = $dbi->connector;
  $dbi = $dbi->connector($connector);

Connection manager object. if connector is set, you can get dbh through connection manager. Conection manager object must have dbh method.

This is DBIx::Connector example. Please pass default_option to DBIx::Connector new method.

  my $connector = DBIx::Connector->new(
    "dbi:mysql:database=$database",
    $user,
    $password,
    DBIx::Custom->new->default_option
  );
  
  my $dbi = DBIx::Custom->connect(connector => $connector);

If connector is set to 1 when connect method is called, DBIx::Connector is automatically set to connector

  my $dbi = DBIx::Custom->connect(
    dsn => $dsn, user => $user, password => $password, connector => 1);
  
  my $connector = $dbi->connector; # DBIx::Connector

Note that DBIx::Connector must be installed.

default_schema EXPERIMETNAL

  my $default_schema = $self->default_schema;
  $dbi = $self->default_schema('public');

schema name. if database has multiple schema, type_rule->{into} filter don't work well.

If you set default_schema, type_rule->{into} filter work well.

dsn

  my $dsn = $dbi->dsn;
  $dbi = $dbi->dsn("DBI:mysql:database=dbname");

Data source name, used when connect method is executed.

default_option

  my $default_option = $dbi->default_option;
  $dbi = $dbi->default_option($default_option);

DBI default option, used when connect method is executed, default to the following values.

  {
    RaiseError => 1,
    PrintError => 0,
    AutoCommit => 1,
  }

exclude_table

  my $exclude_table = $dbi->exclude_table;
  $dbi = $dbi->exclude_table(qr/pg_/);

Excluded table regex. each_column, each_table, type_rule, and setup_model methods ignore matching tables.

filters

  my $filters = $dbi->filters;
  $dbi = $dbi->filters(\%filters);

Filters, registered by register_filter method.

last_sql

  my $last_sql = $dbi->last_sql;
  $dbi = $dbi->last_sql($last_sql);

Get last succeeded SQL executed by execute method.

now

  my $now = $dbi->now;
  $dbi = $dbi->now($now);

Code reference which return current time, default to the following code reference.

  sub {
    my ($sec, $min, $hour, $mday, $mon, $year) = localtime;
    $mon++;
    $year += 1900;
    return sprintf("%04d-%02d-%02d %02d:%02d:%02d");
  }

This return the time like 2011-10-14 05:05:27.

This is used by insert method's created_at option and updated_at option, and update method's updated_at option.

models

  my $models = $dbi->models;
  $dbi = $dbi->models(\%models);

Models, included by include_model method.

mytable_symbol

Symbol to specify own columns in select method column option, default to '__MY__'.

  $dbi->table('book')->select({__MY__ => '*'});

option

  my $option = $dbi->option;
  $dbi = $dbi->option($option);

DBI option, used when connect method is executed. Each value in option override the value of default_option.

password

  my $password = $dbi->password;
  $dbi = $dbi->password('lkj&le`@s');

Password, used when connect method is executed.

query_builder

  my $builder = $dbi->query_builder;

Creat query builder. This is DBIx::Custom::QueryBuilder.

quote

  my quote = $dbi->quote;
  $dbi = $dbi->quote('"');

Reserved word quote. Default to double quote '"' except for mysql. In mysql, default to back quote '`'

You can set quote pair.

  $dbi->quote('[]');

result_class

  my $result_class = $dbi->result_class;
  $dbi = $dbi->result_class('DBIx::Custom::Result');

Result class, default to DBIx::Custom::Result.

safety_character

  my $safety_character = $dbi->safety_character;
  $dbi = $dbi->safety_character($character);

Regex of safety character for table and column name, default to 'a-zA-Z_'. Note that you don't have to specify like '[a-zA-Z_]'.

separator

  my $separator = $dbi->separator;
  $dbi = $dbi->separator('-');

Separator which join table name and column name. This have effect to column and mycolumn method, and select method's column option.

Default to ..

tag_parse

  my $tag_parse = $dbi->tag_parse(0);
  $dbi = $dbi->tag_parse;

Enable DEPRECATED tag parsing functionality, default to 1. If you want to disable tag parsing functionality, set to 0.

user

  my $user = $dbi->user;
  $dbi = $dbi->user('Ken');

User name, used when connect method is executed.

user_column_info

  my $user_column_info = $dbi->user_column_info;
  $dbi = $dbi->user_column_info($user_column_info);

You can set the date like the following one.

  [
    {table => 'book', column => 'title', info => {...}},
    {table => 'author', column => 'name', info => {...}}
  ]

Usually, you set return value of get_column_info.

  my $user_column_info
    = $dbi->get_column_info(exclude_table => qr/^system/);
  $dbi->user_column_info($user_column_info);

If user_column_info is set, each_column use user_column_info to find column info. this is very fast.

user_table_info

  my $user_table_info = $dbi->user_table_info;
  $dbi = $dbi->user_table_info($user_table_info);

You can set the following data.

  [
    {table => 'book', info => {...}},
    {table => 'author', info => {...}}
  ]

Usually, you can set return value of get_table_info.

  my $user_table_info = $dbi->get_table_info(exclude => qr/^system/);
  $dbi->user_table_info($user_table_info);

If user_table_info is set, each_table use user_table_info to find table info.

METHODS

DBIx::Custom inherits all methods from Object::Simple and use all methods of DBI and implements the following new ones.

available_datatype

  print $dbi->available_datatype;

Get available data types. You can use these data types in type rule's from1 and from2 section.

available_typename

  print $dbi->available_typename;

Get available type names. You can use these type names in type_rule's into1 and into2 section.

assign_clause

  my $assign_clause = $dbi->assign_clause({title => 'a', age => 2});

Create assign clause

  title = :title, author = :author

This is used to create update clause.

  "update book set " . $dbi->assign_clause({title => 'a', age => 2});

async EXPERIMENTAL (Currently, Only work in MySQL)

  async => sub {
    my ($dbi, $result) = @_;
    ...
  };

Database async access. AnyEvent is required.

This is mysql async access example.

  use AnyEvent;

  my $cond = AnyEvent->condvar;

  my $timer = AnyEvent->timer(
    interval => 1,
    cb => sub { 1 }
  );

  my $count = 0;

  $dbi->execute('SELECT SLEEP(1), 3', undef,
    prepare_attr => {async => 1}, statement => 'select',
    async => sub {
      my ($dbi, $result) = @_;
      my $row = $result->fetch_one;
      is($row->[1], 3, 'before');
      $cond->send if ++$count == 2;
    }
  );

  $dbi->select('key1', table => 'table1', prepare_attr => {async => 1},
    async => sub {
      my ($dbi, $result) = @_;
      my $row = $result->fetch_one;
      is($row->[0], 1, 'after1');
      $dbi->select('key1', table => 'table1', prepare_attr => {async => 1},
        async => sub {
          my ($dbi, $result) = @_;
          my $row = $result->fetch_one;
          is($row->[0], 1, 'after2');
          $cond->send if ++$count == 2;
        }
      )
    }
  );

  $cond->recv;

column

  my $column = $dbi->column(book => ['author', 'title']);

Create column clause. The following column clause is created.

  book.author as "book.author",
  book.title as "book.title"

You can change separator by separator attribute.

  # Separator is hyphen
  $dbi->separator('-');
  
  book.author as "book-author",
  book.title as "book-title"

connect

  my $dbi = DBIx::Custom->connect(
    dsn => "dbi:mysql:database=dbname",
    user => 'ken',
    password => '!LFKD%$&',
    option => {mysql_enable_utf8 => 1}
  );

Connect to the database and create a new DBIx::Custom object.

DBIx::Custom is a wrapper of DBI. AutoCommit and RaiseError options are true, and PrintError option is false by default.

count

  my $count = $dbi->count(table => 'book');

Get rows count.

Options is same as select method's ones.

create_model

  my $model = $dbi->create_model(
    table => 'book',
    primary_key => 'id',
    join => [
      'inner join company on book.comparny_id = company.id'
    ],
  );

Create DBIx::Custom::Model object and initialize model. the module is also used from model method.

 $dbi->model('book')->select(...);

dbh

  my $dbh = $dbi->dbh;

Get DBI database handle. if connector is set, you can get database handle through connector object.

delete

  $dbi->delete(table => 'book', where => {title => 'Perl'});

Execute delete statement.

The following options are available.

OPTIONS

delete method use all of execute method's options, and use the following new ones.

id

  id => 4
  id => [4, 5]

ID corresponding to primary_key. You can delete rows by id and primary_key.

  $dbi->delete(
    primary_key => ['id1', 'id2'],
    id => [4, 5],
    table => 'book',
  );

The above is same as the following one.

  $dbi->delete(where => {id1 => 4, id2 => 5}, table => 'book');

prefix

  prefix => 'some'

prefix before table name section.

  delete some from book

table

  table => 'book'

Table name.

where

Same as select method's where option.

delete_all

  $dbi->delete_all(table => $table);

Execute delete statement for all rows. Options is same as delete.

each_column

  $dbi->each_column(
    sub {
      my ($dbi, $table, $column, $column_info) = @_;
      
      my $type = $column_info->{TYPE_NAME};
      
      if ($type eq 'DATE') {
          # ...
      }
    }
  );

Iterate all column informations in database. Argument is callback which is executed when one column is found. Callback receive four arguments. DBIx::Custom object, table name, column name, and column information.

If user_column_info is set, each_column method use user_column_info information, you can improve the performance of each_column in the following way.

  my $column_infos = $dbi->get_column_info(exclude_table => qr/^system_/);
  $dbi->user_column_info($column_info);
  $dbi->each_column(sub { ... });

each_table

  $dbi->each_table(
    sub {
      my ($dbi, $table, $table_info) = @_;
      
      my $table_name = $table_info->{TABLE_NAME};
    }
  );

Iterate all table information from in database. Argument is callback which is executed when one table is found. Callback receive three arguments, DBIx::Custom object, table name, table information.

If user_table_info is set, each_table method use user_table_info information, you can improve the performance of each_table in the following way.

  my $table_infos = $dbi->get_table_info(exclude => qr/^system_/);
  $dbi->user_table_info($table_info);
  $dbi->each_table(sub { ... });

execute

  my $result = $dbi->execute(
    "select * from book where title = :title and author like :author",
    {title => 'Perl', author => '%Ken%'}
  );

  my $result = $dbi->execute(
    "select * from book where title = :book.title and author like :book.author",
    {'book.title' => 'Perl', 'book.author' => '%Ken%'}
  );

Execute SQL. SQL can contain column parameter such as :author and :title. You can append table name to column name such as :book.title and :book.author. Second argument is data, embedded into column parameter. Return value is DBIx::Custom::Result object when select statement is executed, or the count of affected rows when insert, update, delete statement is executed.

Named placeholder such as :title is replaced by placeholder ?.

  # Original
  select * from book where title = :title and author like :author
  
  # Replaced
  select * from where title = ? and author like ?;

You can specify operator with named placeholder by name{operator} syntax.

  # Original
  select * from book where :title{=} and :author{like}
  
  # Replaced
  select * from where title = ? and author like ?;

Note that colons in time format such as 12:13:15 is an exception, it is not parsed as named placeholder. If you want to use colon generally, you must escape it by \\

  select * from where title = "aa\\:bb";

OPTIONS

The following options are available.

after_build_sql

You can filter sql after the sql is build.

  after_build_sql => $code_ref

The following one is one example.

  $dbi->select(
    table => 'book',
    column => 'distinct(name)',
    after_build_sql => sub {
      "select count(*) from ($_[0]) as t1"
    }
  );

The following SQL is executed.

  select count(*) from (select distinct(name) from book) as t1;

append

  append => 'order by name'

Append some statement after SQL.

prepare_attr EXPERIMENTAL

  prepare_attr => {async => 1}

Statemend handle attributes, this is DBI's prepare method second argument.

bind_type

Specify database bind data type.

  bind_type => [image => DBI::SQL_BLOB]
  bind_type => [[qw/image audio/] => DBI::SQL_BLOB]

This is used to bind parameter by bind_param of statement handle.

  $sth->bind_param($pos, $value, DBI::SQL_BLOB);

filter

  filter => {
    title  => sub { uc $_[0] }
    author => sub { uc $_[0] }
  }

  # Filter name
  filter => {
    title  => 'upper_case',
    author => 'upper_case'
  }
      
  # At once
  filter => [
    [qw/title author/]  => sub { uc $_[0] }
  ]

Filter. You can set subroutine or filter name registered by register_filter. This filter is executed before data is saved into database. and before type rule filter is executed.

query

  query => 1

execute method return hash reference which contain SQL and column information

  my $sql = $query->{sql};
  my $columns = $query->{columns};

reuse

  reuse => $hash_ref

Reuse query object if the hash reference variable is set.

  my $queries = {};
  $dbi->execute($sql, $param, reuse => $queries);

This will improved performance when you want to execute same query repeatedly because generally creating query object is slow.

primary_key

  primary_key => 'id'
  primary_key => ['id1', 'id2']

Priamry key. This is used for id option.

select EXPERIMETAL

  select => 1

If you set select to 1, this statement become select statement and return value is always DBIx::Custom::Result object.

table

  table => 'author'

If you want to omit table name in column name and enable into1 and into2 type filter, You must set table option.

  $dbi->execute("select * from book where title = :title and author = :author",
    {title => 'Perl', author => 'Ken', table => 'book');

  # Same
  $dbi->execute(
    "select * from book where title = :book.title and author = :book.author",
    {title => 'Perl', author => 'Ken');

table_alias

  table_alias => {worker => 'user'} # {ALIAS => TABLE}

Table alias. Key is alias table name, value is real table name, . If you set table_alias, you can enable into1 and into2 type rule on alias table name.

type_rule_off

  type_rule_off => 1

Turn into1 and into2 type rule off.

type_rule1_off

  type_rule1_off => 1

Turn into1 type rule off.

type_rule2_off

  type_rule2_off => 1

Turn into2 type rule off.

get_column_info

  my $column_infos = $dbi->get_column_info(exclude_table => qr/^system_/);

get column information except for one which match exclude_table pattern.

  [
    {table => 'book', column => 'title', info => {...}},
    {table => 'author', column => 'name' info => {...}}
  ]

get_table_info

  my $table_infos = $dbi->get_table_info(exclude => qr/^system_/);

get table information except for one which match exclude pattern.

  [
    {table => 'book', info => {...}},
    {table => 'author', info => {...}}
  ]

You can set this value to user_table_info.

helper

  $dbi->helper(
    find_or_create   => sub {
      my $self = shift;
      
      # Process
    },
    ...
  );

  $dbi->find_or_create;

insert

  $dbi->insert({title => 'Perl', author => 'Ken'}, table  => 'book');

Execute insert statement. First argument is row data. Return value is affected row count.

If you want to set constant value to row data, use scalar reference as parameter value.

  {date => \"NOW()"}

You can pass multiple parameters, this is very fast.

  $dbi->insert(
    [
      {title => 'Perl', author => 'Ken'},
      {title => 'Ruby', author => 'Tom'}
    ],
    table  => 'book'
  );

In multiple insert, you can't use id option. and only first parameter is used to create sql.

options

insert method use all of execute method's options, and use the following new ones.

bulk_insert

  bulk_insert => 1

bulk insert is executed if database support bulk insert and multiple parameters is passed to insert. The SQL like the following one is executed.

  insert into book (id, title) values (?, ?), (?, ?);

ctime

  ctime => 'created_time'

Created time column name. time when row is created is set to the column. default time format is "YYYY-mm-dd HH:MM:SS", which can be changed by now attribute.

id

  id => 4
  id => [4, 5]

ID corresponding to primary_key. You can insert a row by id and primary_key.

  $dbi->insert(
    {title => 'Perl', author => 'Ken'}
    primary_key => ['id1', 'id2'],
    id => [4, 5],
    table => 'book'
  );

The above is same as the following one.

  $dbi->insert(
    {id1 => 4, id2 => 5, title => 'Perl', author => 'Ken'},
    table => 'book'
  );

prefix

  prefix => 'or replace'

prefix before table name section

  insert or replace into book

table

  table => 'book'

Table name.

mtime

This option is same as update method mtime option.

wrap

  wrap => {price => sub { "max($_[0])" }}

placeholder wrapped string.

If the following statement

  $dbi->insert({price => 100}, table => 'book',
    {price => sub { "$_[0] + 5" }});

is executed, the following SQL is executed.

  insert into book price values ( ? + 5 );

include_model

  $dbi->include_model('MyModel');

Include models from specified namespace, the following layout is needed to include models.

  lib / MyModel.pm
      / MyModel / book.pm
                / company.pm

Name space module, extending DBIx::Custom::Model.

MyModel.pm

  package MyModel;
  use DBIx::Custom::Model -base;
  
  1;

Model modules, extending name space module.

MyModel/book.pm

  package MyModel::book;
  use MyModel -base;
  
  1;

MyModel/company.pm

  package MyModel::company;
  use MyModel -base;
  
  1;

MyModel::book and MyModel::company is included by include_model.

You can get model object by model.

  my $book_model = $dbi->model('book');
  my $company_model = $dbi->model('company');

You can include full-qualified table name like main.book

  lib / MyModel.pm
      / MyModel / main / book.pm
                       / company.pm

  my $main_book = $self->model('main.book');

See DBIx::Custom::Model to know model features.

like_value

  my $like_value = $dbi->like_value

Code reference which return a value for the like value.

  sub { "%$_[0]%" }

mapper

  my $mapper = $dbi->mapper(param => $param);

Create a new DBIx::Custom::Mapper object.

merge_param

  my $param = $dbi->merge_param({key1 => 1}, {key1 => 1, key2 => 2});

Merge parameters. The following new parameter is created.

  {key1 => [1, 1], key2 => 2}

If same keys contains, the value is converted to array reference.

model

  my $model = $dbi->model('book');

Get a DBIx::Custom::Model object create by create_model or include_model

mycolumn

  my $column = $dbi->mycolumn(book => ['author', 'title']);

Create column clause for myself. The following column clause is created.

  book.author as author,
  book.title as title

new

  my $dbi = DBIx::Custom->new(
    dsn => "dbi:mysql:database=dbname",
    user => 'ken',
    password => '!LFKD%$&',
    option => {mysql_enable_utf8 => 1}
  );

Create a new DBIx::Custom object.

not_exists

  my $not_exists = $dbi->not_exists;

DBIx::Custom::NotExists object, indicating the column is not exists. This is used in param of DBIx::Custom::Where .

order

  my $order = $dbi->order;

Create a new DBIx::Custom::Order object.

q

  my $quooted = $dbi->q("title");

Quote string by value of quote.

register_filter

  $dbi->register_filter(
    # Time::Piece object to database DATE format
    tp_to_date => sub {
      my $tp = shift;
      return $tp->strftime('%Y-%m-%d');
    },
    # database DATE format to Time::Piece object
    date_to_tp => sub {
      my $date = shift;
      return Time::Piece->strptime($date, '%Y-%m-%d');
    }
  );

select

  my $result = $dbi->select(
    column => ['author', 'title'],
    table  => 'book',
    where  => {author => 'Ken'},
  );

Execute select statement.

You can pass odd number arguments. first argument is column.

  my $result = $dbi->select(['author', 'title'], table => 'book');

OPTIONS

select method use all of execute method's options, and use the following new ones.

column

  column => 'author'
  column => ['author', 'title']

Column clause.

if column is not specified, '*' is set.

  column => '*'

You can specify hash of array reference.

  column => [
    {book => [qw/author title/]},
    {person => [qw/name age/]}
  ]

This is expanded to the following one by using colomn method.

  book.author as "book.author",
  book.title as "book.title",
  person.name as "person.name",
  person.age as "person.age"

You can specify own column by __MY__.

  column => [
    {__MY__ => [qw/author title/]},
  ]

This is expanded to the following one by using mycolomn method.

  book.author as "author",
  book.title as "title",

__MY__ can be changed by mytable_symbol attribute.

id

  id => 4
  id => [4, 5]

ID corresponding to primary_key. You can select rows by id and primary_key.

  $dbi->select(
    primary_key => ['id1', 'id2'],
    id => [4, 5],
    table => 'book'
  );

The above is same as the following one.

  $dbi->select(
    where => {id1 => 4, id2 => 5},
    table => 'book'
  );

param

  param => {'table2.key3' => 5}

Parameter shown before where clause.

For example, if you want to contain named placeholder in join clause, you can pass parameter by param option.

  join  => ['inner join (select * from table2 where table2.key3 = :table2.key3)' . 
            ' as table2 on table1.key1 = table2.key1']

prefix

  prefix => 'SQL_CALC_FOUND_ROWS'

Prefix of column clause

  select SQL_CALC_FOUND_ROWS title, author from book;

join

  join => [
    'left outer join company on book.company_id = company_id',
    'left outer join location on company.location_id = location.id'
  ]

Join clause. If column clause or where clause contain table name like "company.name", join clauses needed when SQL is created is used automatically.

  $dbi->select(
    table => 'book',
    column => ['company.location_id as location_id'],
    where => {'company.name' => 'Orange'},
    join => [
      'left outer join company on book.company_id = company.id',
      'left outer join location on company.location_id = location.id'
    ]
  );

In above select, column and where clause contain "company" table, the following SQL is created

  select company.location_id as location_id
  from book
    left outer join company on book.company_id = company.id
  where company.name = ?;

You can specify two table by yourself. This is useful when join parser can't parse the join clause correctly.

  $dbi->select(
    table => 'book',
    column => ['company.location_id as location_id'],
    where => {'company.name' => 'Orange'},
    join => [
      {
        clause => 'left outer join location on company.location_id = location.id',
        table => ['company', 'location']
      }
    ]
  );

table

  table => 'book'

Table name.

where

  # (1) Hash reference
  where => {author => 'Ken', 'title' => ['Perl', 'Ruby']}
  # -> where author = 'Ken' and title in ('Perl', 'Ruby')
  
  # (2) DBIx::Custom::Where object
  where => $dbi->where(
    clause => ['and', ':author{=}', ':title{like}'],
    param  => {author => 'Ken', title => '%Perl%'}
  )
  # -> where author = 'Ken' and title like '%Perl%'
  
  # (3) Array reference[Array refenrece, Hash reference]
  where => [
    ['and', ':author{=}', ':title{like}'],
    {author => 'Ken', title => '%Perl%'}
  ]
  # -> where author = 'Ken' and title like '%Perl%'
  
  # (4) Array reference[String, Hash reference]
  where => [
    ':author{=} and :title{like}',
    {author => 'Ken', title => '%Perl%'}
  ]
  #  -> where author = 'Ken' and title like '%Perl%'
  
  # (5) String
  where => 'title is null'
  #  -> where title is null

Where clause. See also DBIx::Custom::Where to know how to create where clause.

setup_model

  $dbi->setup_model;

Setup all model objects. columns of model object is automatically set, parsing database information.

type_rule

  $dbi->type_rule(
    into1 => {
      date => sub { ... },
      datetime => sub { ... }
    },
    into2 => {
      date => sub { ... },
      datetime => sub { ... }
    },
    from1 => {
      # DATE
      9 => sub { ... },
      # DATETIME or TIMESTAMP
      11 => sub { ... },
    }
    from2 => {
      # DATE
      9 => sub { ... },
      # DATETIME or TIMESTAMP
      11 => sub { ... },
    }
  );

Filtering rule when data is send into and get from database. This has a little complex problem.

In into1 and into2 you can specify type name as same as type name defined by create table, such as DATETIME or DATE.

Note that type name and data type don't contain upper case. If these contain upper case character, you convert it to lower case.

into2 is executed after into1.

Type rule of into1 and into2 is enabled on the following column name.

1. column name

  issue_date
  issue_datetime

This need table option in each method.

2. table name and column name, separator is dot

  book.issue_date
  book.issue_datetime

You get all type name used in database by available_typename.

  print $dbi->available_typename;

In from1 and from2 you specify data type, not type name. from2 is executed after from1. You get all data type by available_datatype.

  print $dbi->available_datatype;

You can also specify multiple types at once.

  $dbi->type_rule(
    into1 => [
      [qw/DATE DATETIME/] => sub { ... },
    ],
  );

update

  $dbi->update({title => 'Perl'}, table  => 'book', where  => {id => 4});

Execute update statement. First argument is update row data.

If you want to set constant value to row data, use scalar reference as parameter value.

  {date => \"NOW()"}

OPTIONS

update method use all of execute method's options, and use the following new ones.

id

  id => 4
  id => [4, 5]

ID corresponding to primary_key. You can update rows by id and primary_key.

  $dbi->update(
    {title => 'Perl', author => 'Ken'}
    primary_key => ['id1', 'id2'],
    id => [4, 5],
    table => 'book'
  );

The above is same as the following one.

  $dbi->update(
    {title => 'Perl', author => 'Ken'}
    where => {id1 => 4, id2 => 5},
    table => 'book'
  );

prefix

  prefix => 'or replace'

prefix before table name section

  update or replace book

table

  table => 'book'

Table name.

where

Same as select method's where option.

wrap

  wrap => {price => sub { "max($_[0])" }}

placeholder wrapped string.

If the following statement

  $dbi->update({price => 100}, table => 'book',
    {price => sub { "$_[0] + 5" }});

is executed, the following SQL is executed.

  update book set price =  ? + 5;

mtime

  mtime => 'modified_time'

Modified time column name. time row is updated is set to the column. default time format is YYYY-mm-dd HH:MM:SS, which can be changed by now attribute.

update_all

  $dbi->update_all({title => 'Perl'}, table => 'book', );

Execute update statement for all rows. Options is same as update method.

update_or_insert

  # ID
  $dbi->update_or_insert(
    {title => 'Perl'},
    table => 'book',
    id => 1,
    primary_key => 'id',
    option => {
      select => {
         append => 'for update'
      }
    }
  );

Update or insert.

update_or_insert method execute select method first to find row. If the row is exists, update is executed. If not, insert is executed.

OPTIONS

update_or_insert method use all common option in select, update, delete, and has the following new ones.

option

  option => {
    select => {
      append => '...'
    },
    insert => {
      prefix => '...'
    },
    update => {
      filter => {}
    }
  }

If you want to pass option to each method, you can use option option.

select_option

  select_option => {append => 'for update'}

select method option, select method is used to check the row is already exists.

show_datatype

  $dbi->show_datatype($table);

Show data type of the columns of specified table.

  book
  title: 5
  issue_date: 91

This data type is used in type_rule's from1 and from2.

show_tables

  $dbi->show_tables;

Show tables.

show_typename

  $dbi->show_typename($table);

Show type name of the columns of specified table.

  book
  title: varchar
  issue_date: date

This type name is used in type_rule's into1 and into2.

values_clause

  my $values_clause = $dbi->values_clause({title => 'a', age => 2});

Create values clause.

  (title, author) values (title = :title, age = :age);

You can use this in insert statement.

  my $insert_sql = "insert into book $values_clause";

where

  my $where = $dbi->where;
  $where->clause(['and', 'title = :title', 'author = :author']);
  $where->param({title => 'Perl', author => 'Ken'});
  $where->join(['left join author on book.author = author.id]);

Create a new DBIx::Custom::Where object. See DBIx::Custom::Where to know how to create where clause.

ENVIRONMENTAL VARIABLES

DBIX_CUSTOM_DEBUG

If environment variable DBIX_CUSTOM_DEBUG is set to true, executed SQL and bind values are printed to STDERR.

DBIX_CUSTOM_DEBUG_ENCODING

DEBUG output encoding. Default to UTF-8.

DBIX_CUSTOM_DISABLE_MODEL_EXECUTE

If you set DBIX_CUSTOM_DISABLE_MODEL_EXECUTE to 1, DBIx::Custom::Model execute method call DBIx::Custom execute.

DBIX_CUSTOM_SUPPRESS_DEPRECATION

  $ENV{DBIX_CUSTOM_SUPPRESS_DEPRECATION} = '0.25';

Suppress deprecation warnings before specified version.

DBIX_CUSTOM_TAG_PARSE

If you set DBIX_CUSTOM_TAG_PARSE to 0, tag parsing is off.

DEPRECATED FUNCTIONALITY

DBIx::Custom

  # Attribute methods
  tag_parse # will be removed 2017/1/1
  default_dbi_option # will be removed 2017/1/1
  dbi_option # will be removed 2017/1/1
  data_source # will be removed at 2017/1/1
  dbi_options # will be removed at 2017/1/1
  filter_check # will be removed at 2017/1/1
  reserved_word_quote # will be removed at 2017/1/1
  cache_method # will be removed at 2017/1/1
  
  # Methods
  update_timestamp # will be removed at 2017/1/1
  insert_timestamp # will be removed at 2017/1/1
  method # will be removed at 2017/1/1
  assign_param # will be removed at 2017/1/1
  update_param # will be removed at 2017/1/1
  insert_param # will be removed at 2017/1/1
  create_query # will be removed at 2017/1/1
  apply_filter # will be removed at 2017/1/1
  select_at # will be removed at 2017/1/1
  delete_at # will be removed at 2017/1/1
  update_at # will be removed at 2017/1/1
  insert_at # will be removed at 2017/1/1
  register_tag # will be removed at 2017/1/1
  default_bind_filter # will be removed at 2017/1/1
  default_fetch_filter # will be removed at 2017/1/1
  insert_param_tag # will be removed at 2017/1/1
  register_tag # will be removed at 2017/1/1
  register_tag_processor # will be removed at 2017/1/1
  update_param_tag # will be removed at 2017/1/1
  
  # Options
  insert method created_at option # will be removed 2017/3/1
  update method updated_at option # will be removed 2017/3/1
  select column option [COLUMN => ALIAS] syntax # will be removed 2017/1/1
  execute method id option # will be removed 2017/1/1
  update timestamp option # will be removed 2017/1/1
  insert timestamp option # will be removed 2017/1/1
  select method where_param option # will be removed 2017/1/1
  delete method where_param option # will be removed 2017/1/1
  update method where_param option # will be removed 2017/1/1
  insert method param option # will be removed at 2017/1/1
  insert method id option # will be removed at 2017/1/1
  select method relation option # will be removed at 2017/1/1
  select method column option [COLUMN, as => ALIAS] format
    # will be removed at 2017/1/1
  execute method's sqlfilter option # will be removed at 2017/1/1
  
  # Others
  execute($query, ...) # execute method receiving query object.
                       # this is removed at 2017/1/1
  execute("select * from {= title}"); # execute method's
                                      # tag parsing functionality
                                      # will be removed at 2017/1/1
  Query caching # will be removed at 2017/1/1

DBIx::Custom::Model

  # Attribute methods
  execute # will be removed at 2017/1/1
  method # will be removed at 2017/1/1
  filter # will be removed at 2017/1/1
  name # will be removed at 2017/1/1
  type # will be removed at 2017/1/1

DBIx::Custom::Query

This module is DEPRECATED! # will be removed at 2017/1/1

  # Attribute methods
  default_filter # will be removed at 2017/1/1
  table # will be removed at 2017/1/1
  filters # will be removed at 2017/1/1
  
  # Methods
  filter # will be removed at 2017/1/1

DBIx::Custom::QueryBuilder

This module is DEPRECATED! # will be removed at 2017/1/1

  # Attribute methods
  tags # will be removed at 2017/1/1
  tag_processors # will be removed at 2017/1/1
  
  # Methods
  register_tag # will be removed at 2017/1/1
  register_tag_processor # will be removed at 2017/1/1
  
  # Others
  build_query("select * from {= title}"); # tag parsing functionality
                                          # will be removed at 2017/1/1

DBIx::Custom::Result

  # Attribute methods
  filter_check # will be removed at 2017/1/1
  
  # Methods
  column (from 0.25) # will be removed at 2017/2/1
  fetch_first # will be removed at 2017/2/1
  fetch_hash_first # will be removed 2017/2/1
  filter_on # will be removed at 2017/1/1
  filter_off # will be removed at 2017/1/1
  end_filter # will be removed at 2017/1/1
  remove_end_filter # will be removed at 2017/1/1
  remove_filter # will be removed at 2017/1/1
  default_filter # will be removed at 2017/1/1
  
  # Options
  kv method's multi option (from 0.28) # will be removed at 2018/3/1

DBIx::Custom::Tag

  This module is DEPRECATED! # will be removed at 2017/1/1

DBIx::Custom::Order

  # Other
  prepend method array reference receiving
    $order->prepend(['book', 'desc']); # will be removed 2017/1/1

BACKWARDS COMPATIBILITY POLICY

If a feature is DEPRECATED, you can know it by DEPRECATED warnings. DEPRECATED feature is removed after five years, but if at least one person use the feature and tell me that thing I extend one year each time he tell me it.

DEPRECATION warnings can be suppressed by DBIX_CUSTOM_SUPPRESS_DEPRECATION environment variable.

EXPERIMENTAL features will be changed without warnings.

BUGS

Please tell me bugs if you find bug.

<kimoto.yuki at gmail.com>

http://github.com/yuki-kimoto/DBIx-Custom

AUTHOR

Yuki Kimoto, <kimoto.yuki at gmail.com>

COPYRIGHT & LICENSE

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

2 POD Errors

The following errors were encountered while parsing the POD:

Around line 3184:

You forgot a '=back' before '=head2'

Around line 3735:

You forgot a '=back' before '=head2'

To install DBIx::Custom, copy and paste the appropriate command in to your terminal.

cpanm

cpanm DBIx::Custom

CPAN shell

perl -MCPAN -e shell
install DBIx::Custom

For more information on module installation, please visit the detailed CPAN module installation guide.

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