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Technical Article: Querying JPA Entities with JPQL and Native SQL


 
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Old 09-30-2008
Technical Article: Querying JPA Entities with JPQL and Native SQL

Learn how to take advantage of the Java Persistence query language and native SQL when querying over Java Persistence API entities.

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SQL::Translator::Schema::View(3pm)			User Contributed Perl Documentation			SQL::Translator::Schema::View(3pm)

NAME
SQL::Translator::Schema::View - SQL::Translator view object SYNOPSIS
use SQL::Translator::Schema::View; my $view = SQL::Translator::Schema::View->new( name => 'foo', # name, required sql => 'select id, name from foo', # SQL for view fields => 'id, name', # field names in view ); DESCRIPTION
"SQL::Translator::Schema::View" is the view object. METHODS
new Object constructor. my $view = SQL::Translator::Schema::View->new; fields Gets and set the fields the constraint is on. Accepts a string, list or arrayref; returns an array or array reference. Will unique the field names and keep them in order by the first occurrence of a field name. $view->fields('id'); $view->fields('id', 'name'); $view->fields( 'id, name' ); $view->fields( [ 'id', 'name' ] ); $view->fields( qw[ id name ] ); my @fields = $view->fields; tables Gets and set the tables the SELECT mentions. Accepts a string, list or arrayref; returns an array or array reference. Will unique the table names and keep them in order by the first occurrence of a field name. $view->tables('foo'); $view->tables('foo', 'bar'); $view->tables( 'foo, bar' ); $view->tables( [ 'foo', 'bar' ] ); $view->tables( qw[ foo bar ] ); my @tables = $view->tables; options Gets and sets a list of options on the view. $view->options('ALGORITHM=UNDEFINED'); my @options = $view->options; is_valid Determine whether the view is valid or not. my $ok = $view->is_valid; name Get or set the view's name. my $name = $view->name('foo'); order Get or set the view's order. my $order = $view->order(3); sql Get or set the view's SQL. my $sql = $view->sql('select * from foo'); schema Get or set the view's schema object. $view->schema( $schema ); my $schema = $view->schema; equals Determines if this view is the same as another my $isIdentical = $view1->equals( $view2 ); AUTHOR
Ken Youens-Clark <kclark@cpan.org>. perl v5.14.2 2012-05-01 SQL::Translator::Schema::View(3pm)