file_xml_database_exporter Class Reference

XML format exporter class to file storage. More...

Inheritance diagram for file_xml_database_exporter:

Public Member Functions
	__construct ($filepath, moodle_database $mdb, $check_schema=true)
	Object constructor.
	begin_database_export ($version, $release, $timestamp, $description)
	Callback function.
	begin_table_export (xmldb_table $table)
	Callback function.
	export_database ($description=null)
	Specific implementation for file exporting the database: it opens output stream, calls superclass.
	export_table_data (xmldb_table $table, $data)
	Callback function.
	finish_database_export ()
	Callback function.
	finish_table_export (xmldb_table $table)
	Callback function.

Protected Member Functions
	output ($text)
	Specific output method for the file XML sink.

Protected Attributes
bool	$check_schema
	Boolean flag - whether or not to check that XML database schema matches the RDBMS database schema before exporting (used by.
resource	$file
	File descriptor for the output file.
string	$filepath
	Path to the XML data file.
database_manager	$manager
	Database manager of the source database (a.
moodle_database	$mdb
	Connection to the source database (a.
xmldb_structure	$schema
	Source database schema in XMLDB format (a.

Detailed Description

XML format exporter class to file storage.

Constructor & Destructor Documentation

__construct()

file_xml_database_exporter::__construct	(		$filepath,
		moodle_database	$mdb,
			$check_schema = true )

Object constructor.

Parameters

string	$filepath	- path to the XML data file. Use 'php://output' for PHP output stream.
moodle_database	$mdb	Connection to the source database

See also

xml_database_exporter\__construct()

Parameters

boolean

$check_schema

- whether or not to check that XML database

See also

xml_database_exporter\__construct()

Member Function Documentation

begin_database_export()

xml_database_exporter::begin_database_export ( $version, $release, $timestamp, $description )

inherited

Callback function.

Outputs open XML PI and moodle_database opening tag.

Parameters

float	$version	the version of the system which generating the data
string	$release	moodle release info
string	$timestamp	the timestamp of the data (in ISO 8601) format.
string	$description	a user description of the data.

Return values

void

Reimplemented from database_exporter.

begin_table_export()

xml_database_exporter::begin_table_export ( xmldb_table $table )

inherited

Callback function.

Outputs table opening tag.

Parameters

xmldb_table

$table

- XMLDB object for the exported table

Return values

void

Reimplemented from database_exporter.

export_database()

file_xml_database_exporter::export_database

(

$description = null

)

Specific implementation for file exporting the database: it opens output stream, calls superclass.

See also

database_exporter\export_database() and closes output stream.

Exceptions

dbtransfer_exception

if any checking (e.g. database schema) fails

Parameters

string

$description

a user description of the data.

Reimplemented from database_exporter.

export_table_data()

xml_database_exporter::export_table_data ( xmldb_table $table, $data )

inherited

Callback function.

Outputs record tag with field subtags and data.

Parameters

xmldb_table	$table	- XMLDB object of the table from which data was retrieved
object	$data	- data object (fields and values from record)

Return values

void

Reimplemented from database_exporter.

finish_database_export()

xml_database_exporter::finish_database_export ( )

inherited

Callback function.

Outputs moodle_database closing tag.

Reimplemented from database_exporter.

finish_table_export()

xml_database_exporter::finish_table_export ( xmldb_table $table )

inherited

Callback function.

Outputs table closing tag.

Parameters

xmldb_table

$table

- XMLDB object for the exported table

Reimplemented from database_exporter.

output()

file_xml_database_exporter::output ( $text )

protected

Specific output method for the file XML sink.

Parameters

string

$text

Reimplemented from xml_database_exporter.

Member Data Documentation

$check_schema

bool database_exporter::$check_schema

protectedinherited

Boolean flag - whether or not to check that XML database schema matches the RDBMS database schema before exporting (used by.

See also

export_database).

$manager

database_manager database_exporter::$manager

protectedinherited

Database manager of the source database (a.

See also

database_manager object).

$mdb

moodle_database database_exporter::$mdb

protectedinherited

Connection to the source database (a.

See also

moodle_database object).

$schema

xmldb_structure database_exporter::$schema

protectedinherited

Source database schema in XMLDB format (a.

See also

xmldb_structure object).

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The documentation for this class was generated from the following file:

• lib/dtl/file_xml_database_exporter.php