Class Migration

Class Migration definition.

Abstract
Namespace: Core\Modules\DB
Located at modules/db/migration.php

Methods summary

`public`	# `__construct( string $version )` Init actions. Init actions. Parameters `$version` Version string.
`public`	# `runUp( )` Executes next migration. Executes next migration.
`public`	# `runDown( )` Executes previous migration. Executes previous migration.
`private`	# `afterUp( )` After next migration execution hook. After next migration execution hook.
`private`	# `afterDown( )` After previous migration execution hook. After previous migration execution hook.
`private`	# `beforeUp( )` Before next migration execution hook. Before next migration execution hook.
`private`	# `beforeDown( )` Before previous migration execution hook. Before previous migration execution hook.
`abstract protected`	# `up( )` Up (next) method definition. Up (next) method definition.
`abstract protected`	# `down( )` Down (previous) method definition. Down (previous) method definition.
`protected`	# `createTable( string $tableName, array $columns, string $engine = 'MyISAM' )` Creates a table. Creates a table. Parameters `$tableName` Table name. `$columns` Array of column names. `$engine` Storage engine type.
`protected`	# `dropTable( string $tableName )` Drops a table. Drops a table. Parameters `$tableName` Table name.
`protected`	# `createColumns( string $tableName, array $columns )` Creates columns. Creates columns. Parameters `$tableName` Table name. `$columns` Array of column names.
`protected`	# `dropColumns( string $tableName, array $columns )` Drop columns. Drop columns. Parameters `$tableName` Table name. `$columns` Array of column names.
`protected`	# `createIndex( )` Creation of index method. Creation of index method.
`protected`	# `dropIndex( )` Removal of index method. Removal of index method.
`private array`	# `parseColumn( string $options )` Parses a column options. Parses a column options. Parameters `$options` Options to parse. Returns array

Properties summary

`public string`	`$version` Verison number container. Verison number container.	#
`private boolean`	`$skip` Whether to skip execution flag. Whether to skip execution flag.	# `false`