Joomla! API

Contains a set of JSchemaChange objects for a particular instance of Joomla.

Each of these objects contains a DDL query that should have been run against the database when this database was created or updated. This enables the Installation Manager to check that the current database schema is up to date.

since	2.5
package	Joomla CMS

Methods

Constructor: builds array of $changeItems by processing the .sql files in a folder.

__construct(\Joomla\Database\DatabaseDriver db, string folder = null) : mixed

The folder for the Joomla core updates is administrator/components/com_admin/sql/updates/<database>.

since	2.5

Arguments

db: \Joomla\Database\DatabaseDriverThe current database object
folder: stringThe full path to the folder containing the update queries

Response

mixed

Checks the database and returns an array of any errors found.

check() : array

Note these are not database errors but rather situations where the current schema is not up to date.

since	2.5

Response

arrayArray of errors if any.

Runs the update query to apply the change to the database

fix() : void

since	2.5

Returns a reference to the ChangeSet object, only creating it if it doesn't already exist.

getInstance(\Joomla\Database\DatabaseDriver db, string folder = null) : \Joomla\CMS\Schema\ChangeSet

static

since	2.5

Arguments

db: \Joomla\Database\DatabaseDriverThe current database object
folder: stringThe full path to the folder containing the update queries

Response

\Joomla\CMS\Schema\ChangeSet

Gets the current database schema, based on the highest version number.

getSchema() : string

Note that the .sql files are named based on the version and date, so the file name of the last file should match the database schema version in the #__schemas table.

since	2.5

Response

stringthe schema version for the database

Returns an array of results for this set

getStatus() : array

since	2.5

Response

arrayassociative array of changeitems grouped by unchecked, ok, error, and skipped

Get list of SQL update files for this database

getUpdateFiles() : array|bool

since	2.5

Response

array|boollist of sql update full-path names. False if directory doesn't exist

Get array of SQL queries

getUpdateQueries(array sqlfiles) : array

since	2.5

Arguments

sqlfiles: arrayArray of .sql update filenames.

Response

arrayArray of \stdClass objects where: file=filename, update_query = text of SQL update query

Properties

Array of ChangeItem objects

since	2.5

Type(s)

ChangeItem[]

DatabaseDriver object

since	2.5

Type(s)

\Joomla\Database\DatabaseDriver

Folder where SQL update files will be found

since	2.5

Type(s)

string

The singleton instance of this object

static

since	3.5.1

Type(s)

ChangeSet