DBIx-Custom / DBIx-Custom-0.0501 / blib / libdoc / DBIx::Custom::SQL::Template.3pm /
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.\" ========================================================================
.\"
.IX Title "DBIx::Custom::SQL::Template 3"
.TH DBIx::Custom::SQL::Template 3 "2009-11-16" "perl v5.8.8" "User Contributed Perl Documentation"
.SH "NAME"
DBIx::Custom::SQL::Template \- Custamizable SQL Template for DBIx::Custom
.SH "VERSION"
.IX Header "VERSION"
Version 0.0101
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&    my $sql_tmpl = DBIx::Custom::SQL::Template->new;
.Ve
.PP
.Vb 2
\&    my $tmpl   = "select from table {= k1} && {<> k2} || {like k3}";
\&    my $param = {k1 => 1, k2 => 2, k3 => 3};
.Ve
.PP
.Vb 1
\&    my $query = $sql_template->create_query($tmpl);
.Ve
.PP
.Vb 8
\&    # Using query from DBIx::Custom
\&    use DBIx::Custom;
\&    my $dbi = DBI->new(
\&       data_source => $data_source,
\&       user        => $user,
\&       password    => $password, 
\&       dbi_options => {PrintError => 0, RaiseError => 1}
\&    );
.Ve
.PP
.Vb 2
\&    $query = $dbi->create_query($tmpl); # This is SQL::Template create_query
\&    $dbi->query($query, $param);
.Ve
.SH "CLASS-OBJECT ACCESSORS"
.IX Header "CLASS-OBJECT ACCESSORS"
Class-Object accessor is used from both object and class
.PP
.Vb 2
\&    $class->$accessor # call from class
\&    $self->$accessor  # call form object
.Ve
.Sh "tag_processors"
.IX Subsection "tag_processors"
.Vb 3
\&    # Set and get
\&    $self           = $sql_tmpl->tag_processors($tag_processors);
\&    $tag_processors = $sql_tmpl->tag_processors;
.Ve
.PP
.Vb 5
\&    # Sample
\&    $sql_tmpl->tag_processors(
\&        '?' => \e&expand_question,
\&        '=' => \e&expand_equel
\&    );
.Ve
.PP
You can use add_tag_processor to add tag processor
.Sh "tag_start"
.IX Subsection "tag_start"
.Vb 3
\&    # Set and get
\&    $self      = $sql_tmpl->tag_start($tag_start);
\&    $tag_start = $sql_tmpl->tag_start;
.Ve
.PP
.Vb 2
\&    # Sample
\&    $sql_tmpl->tag_start('{');
.Ve
.PP
Default is '{'
.Sh "tag_end"
.IX Subsection "tag_end"
.Vb 3
\&    # Set and get
\&    $self    = $sql_tmpl->tag_start($tag_end);
\&    $tag_end = $sql_tmpl->tag_start;
.Ve
.PP
.Vb 2
\&    # Sample
\&    $sql_tmpl->tag_start('}');
.Ve
.PP
Default is '}'
.Sh "tag_syntax"
.IX Subsection "tag_syntax"
.Vb 3
\&    # Set and get
\&    $self       = $sql_tmpl->tag_syntax($tag_syntax);
\&    $tag_syntax = $sql_tmpl->tag_syntax;
.Ve
.PP
.Vb 7
\&    # Sample
\&    $sql_tmpl->tag_syntax(
\&        "[Tag]            [Expand]\en" .
\&        "{? name}         ?\en" .
\&        "{= name}         name = ?\en" .
\&        "{<> name}        name <> ?\en"
\&    );
.Ve
.SH "METHODS"
.IX Header "METHODS"
.Sh "create_query"
.IX Subsection "create_query"
.Vb 2
\&    # Create SQL form SQL template
\&    $query = $sql_tmpl->create_query($tmpl);
.Ve
.PP
.Vb 3
\&    # Sample
\&    $query = $sql_tmpl->create_sql(
\&         "select * from table where {= title} && {like author} || {<= price}")
.Ve
.PP
.Vb 3
\&    # Result
\&    $qeury->{sql} : "select * from table where title = ? && author like ? price <= ?;"
\&    $query->{key_infos} : [['title'], ['author'], ['price']]
.Ve
.PP
.Vb 5
\&    # Sample2 (with table name)
\&    ($sql, @bind_values) = $sql_tmpl->create_sql(
\&            "select * from table where {= table.title} && {like table.author}",
\&            {table => {title => 'Perl', author => '%Taro%'}}
\&        )
.Ve
.PP
.Vb 4
\&    # Result2
\&    $query->{sql} : "select * from table where table.title = ? && table.title like ?;"
\&    $query->{key_infos} :[ [['table.title'],['table', 'title']],
\&                           [['table.author'],['table', 'author']] ]
.Ve
.PP
This method create query using by DBIx::Custom.
query is two infomation
.PP
.Vb 2
\&    1.sql       : SQL
\&    2.key_infos : Parameter access key information
.Ve
.Sh "add_tag_processor"
.IX Subsection "add_tag_processor"
Add tag processor
.PP
.Vb 2
\&    # Add
\&    $self = $sql_tmpl->add_tag_processor($tag_processor);
.Ve
.PP
.Vb 4
\&    # Sample
\&    $sql_tmpl->add_tag_processor(
\&        '?' => sub {
\&            my ($tag_name, $tag_args) = @_;
.Ve
.PP
.Vb 2
\&            my $key1 = $tag_args->[0];
\&            my $key2 = $tag_args->[1];
.Ve
.PP
.Vb 1
\&            my $key_infos = [];
.Ve
.PP
.Vb 1
\&            # Expand tag and create key informations
.Ve
.PP
.Vb 4
\&            # Return expand tags and key informations
\&            return ($expand, $key_infos);
\&        }
\&    );
.Ve
.PP
Tag processor recieve 2 argument
.PP
.Vb 2
\&    1. Tag name            (?, =, <>, or etc)
\&    2. Tag arguments       (arg1 and arg2 in {tag_name arg1 arg2})
.Ve
.PP
Tag processor return 2 value
.PP
.Vb 2
\&    1. Expanded Tag (For exsample, '{= title}' is expanded to 'title = ?')
\&    2. Key infomations
.Ve
.PP
You must be return expanded tag and key infomations.
.PP
Key information is a little complex. so I will explan this in future.
.PP
If you want to know more, Please see DBIx::Custom::SQL::Template source code.
.Sh "clone"
.IX Subsection "clone"
.Vb 2
\&    # Clone DBIx::Custom::SQL::Template object
\&    $clone = $self->clone;
.Ve
.SH "Available Tags"
.IX Header "Available Tags"
.Vb 5
\&    # Available Tags
\&    [tag]            [expand]
\&    {? name}         ?
\&    {= name}         name = ?
\&    {<> name}        name <> ?
.Ve
.PP
.Vb 4
\&    {< name}         name < ?
\&    {> name}         name > ?
\&    {>= name}        name >= ?
\&    {<= name}        name <= ?
.Ve
.PP
.Vb 2
\&    {like name}      name like ?
\&    {in name}        name in [?, ?, ..]
.Ve
.PP
.Vb 2
\&    {insert}  (key1, key2, key3) values (?, ?, ?)
\&    {update}     set key1 = ?, key2 = ?, key3 = ?
.Ve
.PP
.Vb 6
\&    # Sample1
\&    $query = $sql_tmpl->create_sql(
\&        "insert into table {insert key1 key2}"
\&    );
\&    # Result1
\&    $sql : "insert into table (key1, key2) values (?, ?)"
.Ve
.PP
.Vb 4
\&    # Sample2
\&    $query = $sql_tmpl->create_sql(
\&        "update table {update key1 key2} where {= key3}"
\&    );
.Ve
.PP
.Vb 2
\&    # Result2
\&    $query->{sql} : "update table set key1 = ?, key2 = ? where key3 = ?;"
.Ve
.SH "AUTHOR"
.IX Header "AUTHOR"
Yuki Kimoto, \f(CW\*(C`<kimoto.yuki at gmail.com>\*(C'\fR
.PP
Github 
<http://github.com/yuki\-kimoto>
<http://github.com/yuki\-kimoto/DBIx\-Custom\-SQL\-Template>
.PP
Please let know me bag if you find
Please request me if you want to do something
.SH "COPYRIGHT & LICENSE"
.IX Header "COPYRIGHT & LICENSE"
Copyright 2009 Yuki Kimoto, all rights reserved.
.PP
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.