Metadata repository contains methods for fetching metadata from database or performing calculations on entity properties. More...

Inheritance diagram for Elgg\Database\Metadata:

Public Member Functions
	count ()
	{} More...

	calculate ($function, $property, $property_type=null)
	Performs a mathematical calculation on metadata or metadata entity's properties. More...

	get ($limit=null, $offset=null, $callback=null)
	Fetch metadata. More...

	execute ()
	Execute the query resolving calculation, count and/or batch options. More...

Public Member Functions inherited from Elgg\Database\Repository
	__construct (array $options=[])
	Constructor. More...

	__get ($name)
	{} More...

	__set ($name, $value)
	{} More...

	__unset ($name)
	{} More...

	__isset ($name)
	{} More...

	count ()
	Count rows. More...

	calculate ($function, $property, $property_type=null)
	Apply numeric calculation to a column. More...

	get ($limit=null, $offset=null, $callback=null)
	Fetch rows. More...

	batch ($limit=null, $offset=null, $callback=null)
	Fetch rows as an ElggBatch. More...

	execute ()
	Apply correct execution method based on calculation, count or other criteria. More...

	filter (\Closure $closure)
	Filter query prior to execution Callback function will receive QueryBuilder as the first argument and table alias as a second Callback function can either mutate the instance of the QueryBuilder or return a composition expression that will be appended to AND where statements. More...

	select ($expression)
	Add SELECT. More...

	join ($joined_table, $joined_alias=null, $x=null, $comparison=null, $y=null, $type=null, $case_sensitive=null)
	Add JOIN clause Join a database table on an $x to $y comparison. More...

	groupBy ($expression)
	Add GROUP BY. More...

	having ($expression)
	Add HAVING. More...

	orderBy ($expression, $direction)
	Add ORDER BY. More...

	expandInto (QueryBuilder $qb, $table_alias=null)
	Extend query builder with select, group_by, having and order_by clauses from $options. More...

Protected Member Functions
	buildQuery (QueryBuilder $qb)
	Build a database query. More...

	buildEntityWhereClause (QueryBuilder $qb)
	Process entity attribute wheres Joins entities table on entity guid in metadata table and applies where clauses. More...

	buildPairedMetadataClause (QueryBuilder $qb, $clauses, $boolean= 'AND')
	Process metadata name value pairs Applies where clauses to the selected metadata table. More...

	buildPairedAnnotationClause (QueryBuilder $qb, $clauses, $boolean= 'AND')
	Process annotation name value pairs Joins annotation table on entity_guid in the metadata table and applies where clauses. More...

	buildPairedRelationshipClause (QueryBuilder $qb, $clauses, $boolean= 'AND')
	Process relationship name value pairs Joins relationship table on entity_guid in the metadata table and applies where clauses. More...

Additional Inherited Members
Static Public Member Functions inherited from Elgg\Database\Repository
static	with (array $options=[])
	Constructs a new. More...

static	find (array $options=[])
	Build and execute a new query from an array of legacy options. More...

Protected Attributes inherited from Elgg\Database\Repository
QueryOptions	$options

Detailed Description

Metadata repository contains methods for fetching metadata from database or performing calculations on entity properties.

Definition at line 20 of file Metadata.php.

Member Function Documentation

Elgg\Database\Metadata::buildEntityWhereClause ( QueryBuilder $qb )

protected

Process entity attribute wheres Joins entities table on entity guid in metadata table and applies where clauses.

Parameters

QueryBuilder $qb Query builder

Returns: |CompositeExpression|mixed|null|string

Definition at line 214 of file Metadata.php.

Elgg\Database\Metadata::buildPairedAnnotationClause	(	QueryBuilder	$qb,
			$clauses,
			$boolean = `'AND'`
	)

protected

Process annotation name value pairs Joins annotation table on entity_guid in the metadata table and applies where clauses.

Parameters

QueryBuilder	$qb	Query builder
	AnnotationWhereClause[]	$clauses Where clauses
string	$boolean	Merge boolean

Returns: CompositeExpression|string

Definition at line 251 of file Metadata.php.

Elgg\Database\Metadata::buildPairedMetadataClause	(	QueryBuilder	$qb,
			$clauses,
			$boolean = `'AND'`
	)

protected

Process metadata name value pairs Applies where clauses to the selected metadata table.

Parameters

QueryBuilder	$qb	Query builder
	MetadataWhereClause[]	$clauses Where clauses
string	$boolean	Merge boolean

Returns: CompositeExpression|string

Definition at line 231 of file Metadata.php.

Elgg\Database\Metadata::buildPairedRelationshipClause	(	QueryBuilder	$qb,
			$clauses,
			$boolean = `'AND'`
	)

protected

Process relationship name value pairs Joins relationship table on entity_guid in the metadata table and applies where clauses.

Note: Note that $relationship_join_on does not apply here, as there is only one guid column in the metadata table

Parameters

QueryBuilder	$qb	Query builder
	RelationshipWhereClause[]	$clauses Where clauses
string	$boolean	Merge boolean

Returns: CompositeExpression|string

Definition at line 279 of file Metadata.php.

Elgg\Database\Metadata::buildQuery ( QueryBuilder $qb )

protected

Build a database query.

Parameters

QueryBuilder $qb the Elgg QueryBuilder

Returns: QueryBuilder

Definition at line 180 of file Metadata.php.

Elgg\Database\Metadata::calculate	(	$function,
		$property,
		$property_type = `null`
	)

Performs a mathematical calculation on metadata or metadata entity's properties.

Parameters

string	$function	Valid numeric function
string	$property	Property name
string	$property_type	'attribute'\|'metadata'\|'annotation'

Returns: int|float

Exceptions

DomainException

Definition at line 52 of file Metadata.php.

Elgg\Database\Metadata::count ( )

{}

Definition at line 25 of file Metadata.php.

Elgg\Database\Metadata::execute ( )

Execute the query resolving calculation, count and/or batch options.

Returns: array|[]|[]|false|int

Exceptions

LogicException

Definition at line 145 of file Metadata.php.

Elgg\Database\Metadata::get	(	$limit = `null`,
		$offset = `null`,
		$callback = `null`
	)

Fetch metadata.

Parameters

int	$limit	Limit
int	$offset	Offset
callable	$callback	Custom callback

Returns: []

Definition at line 107 of file Metadata.php.

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

engine/classes/Elgg/Database/Metadata.php

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation