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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.