NAME Perinci::Sub::Gen::AccessTable::DBI - Generate function (and its Rinci metadata) to access DBI table data VERSION version 0.06 SYNOPSIS Your database table "countries": | id | eng_name | ind_name | |----+--------------------------+-----------------| | cn | China | Cina | | id | Indonesia | Indonesia | | sg | Singapore | Singapura | | us | United States of America | Amerika Serikat | In list_countries.pl: #!perl use strict; use warnings; use Perinci::CmdLine; use Perinci::Sub::Gen::AccessTable::DBI qw(gen_read_dbi_table_func); our %SPEC; my $res = gen_read_dbi_table_func( name => 'list_countries', summary => 'func summary', # opt description => 'func description', # opt dbh => ..., table_name => 'countries', table_spec => { summary => 'List of countries', fields => { id => { schema => 'str*', summary => 'ISO 2-letter code for the country', index => 0, sortable => 1, }, eng_name => { schema => 'str*', summary => 'English name', index => 1, sortable => 1, }, ind_name => { schema => 'str*', summary => 'Indonesian name', index => 2, sortable => 1, }, }, pk => 'id', }, ); die "Can't generate function: $res->[0] - $res->[1]" unless $res->[0] == 200; Perinci::CmdLine->new(url=>'/main/list_countries')->run; Now you can do: # list all countries, by default only PK field is shown $ list_countries.pl --format=text-simple cn id sg us # show as json, randomize order $ list_countries.pl --format=json --random ["id","us","sg","cn"] # only list countries which contain 'Sin', show all fields (--detail) $ list_countries.pl --q=Sin --detail .----------------------------. | eng_name | id | ind_name | +-----------+----+-----------+ | Singapore | sg | Singapura | '-----------+----+-----------+ # show only certain fields, limit number of records, return in YAML format $ list_countries.pl --fields '[id, eng_name]' --result-limit 2 --format=yaml - 200 - OK - - id: cn eng_name: China - id: id eng_name: Indonesia DESCRIPTION This module is just like Perinci::Sub::Gen::AccessTable, except that table data source is from DBI. gen_read_dbi_table_func() accept mostly the same arguments as gen_read_table_func(), except: 'table_name' instead of 'table_data', and 'dbh'. Supported databases: SQLite, MySQL, PostgreSQL. Early versions tested on: SQLite. CAVEATS It is often not a good idea to expose your database schema directly as API. TODO * Generate table_spec from database schema, if unspecified FAQ SEE ALSO Perinci::Sub::Gen::AccessTable FUNCTIONS gen_read_dbi_table_func(%args) -> [status, msg, result, meta] Generate function (and its metadata) to read DBI table. The generated function acts like a simple single table SQL SELECT query, featuring filtering, ordering, and paging, but using arguments as the 'query language'. The generated function is suitable for exposing a table data from an API function. Please see Perinci::Sub::Gen::AccessTable's documentation for more details on what arguments the generated function will accept. Arguments ('*' denotes required arguments): * case_insensitive_search => *bool* (default: 1) Decide whether generated function will perform case-insensitive search. * custom_filters => *hash* Supply custom filters. A hash of filter name and definitions. Filter name will be used as generated function's argument and must not clash with other arguments. Filter definition is a hash containing these keys: meta (hash, argument metadata), code, fields (array, list of table fields related to this field). Code will be called for each record to be filtered and will be supplied ($r, $v, $opts) where $v is the filter value (from the function argument) and $r the hashref record value. $opts is currently empty. Code should return true if record satisfies the filter. * custom_search => *code* Supply custom searching for generated function. Code will be supplied ($r, $q, $opts) where $r is the record (hashref), $q is the search term (from the function argument 'q'), and $opts is {ci=>0|1}. Code should return true if record matches search term. * dbh* => *obj* DBI database handle. * default_arg_values => *hash* Specify defaults for generated function's arguments. Can be used to supply default filters, e.g. # limit years for credit card expiration date { "year.min" => $curyear, "year.max" => $curyear+10, } * default_detail => *bool* Supply default 'detail' value for function arg spec. * default_fields => *str* Supply default 'fields' value for function arg spec. * default_random => *bool* Supply default 'random' value in generated function's metadata. * default_result_limit => *int* Supply default 'result_limit' value in generated function's metadata. * default_sort => *str* Supply default 'sort' value in generated function's metadata. * default_with_field_names => *bool* Supply default 'with_field_names' value in generated function's metadata. * description* => *str* Generated function's description. * enable_search => *bool* (default: 1) Decide whether generated function will support searching (argument q). * install => *bool* (default: 1) Whether to install generated function (and metadata). By default, generated function will be installed to the specified (or caller's) package, as well as its generated metadata into %SPEC. Set this argument to false to skip installing. * langs => *array* (default: ["en_US"]) Choose language for function metadata. This function can generate metadata containing text from one or more languages. For example if you set 'langs' to ['enUS', 'idID'] then the generated function metadata might look something like this: { v => 1.1, args => { random => { summary => 'Random order of results', # English "summary.alt.lang.id_ID" => "Acak urutan hasil", # Indonesian ... }, ... }, ... } * name* => *str* Generated function's name, e.g. `myfunc`. * package* => *str* Generated function's package, e.g. `My::Package`. This is needed mostly for installing the function. You usually don't need to supply this if you set "install" to false. If not specified, caller's package will be used by default. * summary* => *str* Generated function's summary. * table_name* => *str* DBI table name. * table_spec* => *hash* Table specification. Just like Perinci::Sub::Gen::AccessTable's tablespec, except that each field specification can have a key called "db_field" to specify the database field (if different). Currently this is required. Future version will be able to generate tablespec from table schema if table_spec is not specified. * word_search => *bool* (default: 0) Decide whether generated function will perform word searching instead of string searching. For example, if search term is 'pine' and field value is 'green pineapple', search will match if wordsearch=false, but won't match under wordsearch. This will not have effect under 'custom_search'. Return value: Returns an enveloped result (an array). First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information. AUTHOR Steven Haryanto COPYRIGHT AND LICENSE This software is copyright (c) 2012 by Steven Haryanto. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.