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DBIx::Class::Storage::DBI::Oracle::Generic(3) User Contributed Perl Documentation DBIx::Class::Storage::DBI::Oracle::Generic(3) NAME
DBIx::Class::Storage::DBI::Oracle::Generic - Oracle Support for DBIx::Class SYNOPSIS
# In your result (table) classes use base 'DBIx::Class::Core'; __PACKAGE__->add_columns({ id => { sequence => 'mysequence', auto_nextval => 1 } }); __PACKAGE__->set_primary_key('id'); # Somewhere in your Code # add some data to a table with a hierarchical relationship $schema->resultset('Person')->create ({ firstname => 'foo', lastname => 'bar', children => [ { firstname => 'child1', lastname => 'bar', children => [ { firstname => 'grandchild', lastname => 'bar', } ], }, { firstname => 'child2', lastname => 'bar', }, ], }); # select from the hierarchical relationship my $rs = $schema->resultset('Person')->search({}, { 'start_with' => { 'firstname' => 'foo', 'lastname' => 'bar' }, 'connect_by' => { 'parentid' => { '-prior' => { -ident => 'personid' } }, 'order_siblings_by' => { -asc => 'name' }, }; ); # this will select the whole tree starting from person "foo bar", creating # following query: # SELECT # me.persionid me.firstname, me.lastname, me.parentid # FROM # person me # START WITH # firstname = 'foo' and lastname = 'bar' # CONNECT BY # parentid = prior personid # ORDER SIBLINGS BY # firstname ASC DESCRIPTION
This class implements base Oracle support. The subclass DBIx::Class::Storage::DBI::Oracle::WhereJoins is for "(+)" joins in Oracle versions before 9.0. METHODS
get_autoinc_seq Returns the sequence name for an autoincrement column datetime_parser_type This sets the proper DateTime::Format module for use with DBIx::Class::InflateColumn::DateTime. connect_call_datetime_setup Used as: on_connect_call => 'datetime_setup' In connect_info to set the session nls date, and timestamp values for use with DBIx::Class::InflateColumn::DateTime and the necessary environment variables for DateTime::Format::Oracle, which is used by it. Maximum allowable precision is used, unless the environment variables have already been set. These are the defaults used: $ENV{NLS_DATE_FORMAT} ||= 'YYYY-MM-DD HH24:MI:SS'; $ENV{NLS_TIMESTAMP_FORMAT} ||= 'YYYY-MM-DD HH24:MI:SS.FF'; $ENV{NLS_TIMESTAMP_TZ_FORMAT} ||= 'YYYY-MM-DD HH24:MI:SS.FF TZHTZM'; To get more than second precision with DBIx::Class::InflateColumn::DateTime for your timestamps, use something like this: use Time::HiRes 'time'; my $ts = DateTime->from_epoch(epoch => time); relname_to_table_alias DBIx::Class uses DBIx::Class::Relationship names as table aliases in queries. Unfortunately, Oracle doesn't support identifiers over 30 chars in length, so the DBIx::Class::Relationship name is shortened and appended with half of an MD5 hash. See "relname_to_table_alias" in DBIx::Class::Storage. with_deferred_fk_checks Runs a coderef between: alter session set constraints = deferred ... alter session set constraints = immediate to defer foreign key checks. Constraints must be declared "DEFERRABLE" for this to work. ATTRIBUTES
Following additional attributes can be used in resultsets. connect_by or connect_by_nocycle Value: \%connect_by A hashref of conditions used to specify the relationship between parent rows and child rows of the hierarchy. connect_by => { parentid => 'prior personid' } # adds a connect by statement to the query: # SELECT # me.persionid me.firstname, me.lastname, me.parentid # FROM # person me # CONNECT BY # parentid = prior persionid connect_by_nocycle => { parentid => 'prior personid' } # adds a connect by statement to the query: # SELECT # me.persionid me.firstname, me.lastname, me.parentid # FROM # person me # CONNECT BY NOCYCLE # parentid = prior persionid start_with Value: \%condition A hashref of conditions which specify the root row(s) of the hierarchy. It uses the same syntax as "search" in DBIx::Class::ResultSet start_with => { firstname => 'Foo', lastname => 'Bar' } # SELECT # me.persionid me.firstname, me.lastname, me.parentid # FROM # person me # START WITH # firstname = 'foo' and lastname = 'bar' # CONNECT BY # parentid = prior persionid order_siblings_by Value: ($order_siblings_by | @order_siblings_by) Which column(s) to order the siblings by. It uses the same syntax as "order_by" in DBIx::Class::ResultSet 'order_siblings_by' => 'firstname ASC' # SELECT # me.persionid me.firstname, me.lastname, me.parentid # FROM # person me # CONNECT BY # parentid = prior persionid # ORDER SIBLINGS BY # firstname ASC AUTHOR
See "AUTHOR" in DBIx::Class and "CONTRIBUTORS" in DBIx::Class. LICENSE
You may distribute this code under the same terms as Perl itself. perl v5.16.2 2012-08-16 DBIx::Class::Storage::DBI::Oracle::Generic(3)
