ExternalStoreDB Class Reference

DB accessable external objects. More...

List of all members.

Public Member Functions
	__construct ($params=array())
&	fetchBlob ($cluster, $id, $itemID)
	Fetch a blob item out of the database; a cache of the last-loaded blob will be kept so that multiple loads out of a multi-item blob can avoid redundant database access and decompression.
	fetchFromURL ($url)
	Fetch data from given URL.
&	getLoadBalancer ($cluster)
	Get a LoadBalancer for the specified cluster.
&	getMaster ($cluster)
	Get a master database connection for the specified cluster.
&	getSlave ($cluster)
	Get a slave database connection for the specified cluster.
	getTable (&$db)
	Get the 'blobs' table name for this database.
	store ($cluster, $data)
	Insert a data item into a given cluster.

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Detailed Description

DB accessable external objects.

Definition at line 7 of file ExternalStoreDB.php.

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Constructor & Destructor Documentation

ExternalStoreDB::__construct

(

$

params = array()

)

Definition at line 9 of file ExternalStoreDB.php.

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Member Function Documentation

& ExternalStoreDB::fetchBlob	(	$	cluster,
		$	id,
		$	itemID
	)

Fetch a blob item out of the database; a cache of the last-loaded blob will be kept so that multiple loads out of a multi-item blob can avoid redundant database access and decompression.

Parameters:

$cluster
$id
$itemID

Returns:

mixed

Access:

private

Definition at line 105 of file ExternalStoreDB.php.

References $dbr, false, getMaster(), getSlave(), getTable(), wfDebug(), and wfDebugLog().

Referenced by fetchFromURL().

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ExternalStoreDB::fetchFromURL

(

$

url

)

Fetch data from given URL.

Parameters:

$url	String: an url of the form DB://cluster/id or DB://cluster/id/itemid for concatened storage.

Definition at line 77 of file ExternalStoreDB.php.

References $path, $url, and fetchBlob().

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& ExternalStoreDB::getLoadBalancer

(

$

cluster

)

Get a LoadBalancer for the specified cluster.

Parameters:

$cluster

String: cluster name

Returns:

LoadBalancer object

Definition at line 19 of file ExternalStoreDB.php.

References wfGetLBFactory().

Referenced by getMaster(), and getSlave().

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& ExternalStoreDB::getMaster

(

$

cluster

)

Get a master database connection for the specified cluster.

Parameters:

$cluster

String: cluster name

Returns:

DatabaseBase object

Definition at line 53 of file ExternalStoreDB.php.

References $lb, and getLoadBalancer().

Referenced by fetchBlob(), and store().

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& ExternalStoreDB::getSlave

(

$

cluster

)

Get a slave database connection for the specified cluster.

Parameters:

$cluster

String: cluster name

Returns:

DatabaseBase object

Definition at line 31 of file ExternalStoreDB.php.

References $lb, $wgDefaultExternalStore, getLoadBalancer(), and wfDebug().

Referenced by fetchBlob().

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ExternalStoreDB::getTable

(

&$

db

)

Get the 'blobs' table name for this database.

Parameters:

$db	DatabaseBase

Returns:

String: table name ('blobs' by default)

Definition at line 65 of file ExternalStoreDB.php.

Referenced by fetchBlob(), and store().

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ExternalStoreDB::store	(	$	cluster,
		$	data
	)

Insert a data item into a given cluster.

Parameters:

$cluster	String: the cluster name
$data	String: the data item

Returns:

string URL

Definition at line 149 of file ExternalStoreDB.php.

References getMaster(), and getTable().

Referenced by CompressOld\compressPage().

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

• includes/ExternalStoreDB.php