DBIx::DBSchema::ForeignKey3pm

Usage

  use DBIx::DBSchema::ForeignKey;
  $foreign_key = new DBIx::DBSchema::ForeignKey (
    { 'columns' => [ 'column_name' ],
      'table'   => 'foreign_table',
    }
  );
  $foreign_key = new DBIx::DBSchema::ForeignKey (
    {
      'constraint' => 'constraint_name',
      'columns'    => [ 'column_name', 'column2' ],
      'table'      => 'foreign_table',
      'references' => [ 'foreign_column', 'foreign_column2' ],
      'match'      => 'MATCH FULL', # or MATCH SIMPLE
      'on_delete'  => 'NO ACTION', # on clauses: NO ACTION / RESTRICT /
      'on_update'  => 'RESTRICT',  #           CASCADE / SET NULL / SET DEFAULT
    }
  );

Overview

DBIx::DBSchema::ForeignKey objects represent a foreign key.

Methods

new HASHREF | OPTION, VALUE, ...

Creates a new DBIx::DBschema::ForeignKey object.

Accepts either a hashref or a list of options and values.

Options are:

constraint - constraint name

columns - List reference of column names

table - Foreign table name

references - List reference of column names in foreign table

match -

on_delete -

on_update -

constraint [ CONSTRAINT_NAME ]

Returns or sets the constraint name

table [ TABLE_NAME ]

Returns or sets the foreign table name

columns [ LISTREF ]

Returns or sets the columns.

columns_sql

Returns a comma-joined list of columns, suitable for an SQL statement.

references [ LISTREF ]

Returns or sets the referenced columns.

references_sql

Returns a comma-joined list of referenced columns, suitable for an SQL statement.

match [ TABLE_NAME ]

Returns or sets the MATCH clause

on_delete [ ACTION ]

Returns or sets the ON DELETE clause

on_update [ ACTION ]

Returns or sets the ON UPDATE clause

sql_foreign_key

Returns an SQL FOREIGN KEY statement.

cmp OTHER_INDEX_OBJECT

Compares this object to another supplied object. Returns true if they are have the same table, columns and references.