Database abstraction query builder. More...

Inheritance diagram for Elgg\Database\QueryBuilder:

Public Member Functions
	subquery ($table, $alias=null)
	Creates a new SelectQueryBuilder for join/where subqueries using the DB connection of the primary QueryBuilder. More...

	addClause (Clause $clause, $alias=null)
	Apply clause to this instance. More...

	prefix ($table)
	Prefixes the table name with installation DB prefix. More...

	getTableName ()
	Returns the name of the primary table. More...

	getTableAlias ()
	Returns the alias of the primary table. More...

	param ($value, $type=null, $key=null)
	Sets a new parameter assigning it a unique parameter key/name if none provided Returns the name of the new parameter. More...

	execute (bool $track_query=true)

	from ($from, $alias=null)
	{} More...

	insert ($insert=null)
	{} More...

	update ($update=null, $alias=null)
	{} More...

	delete ($delete=null, $alias=null)
	{} More...

	join ($fromAlias, $join, $alias, $condition=null)
	{} More...

	innerJoin ($fromAlias, $join, $alias, $condition=null)
	{} More...

	leftJoin ($fromAlias, $join, $alias, $condition=null)
	{} More...

	rightJoin ($fromAlias, $join, $alias, $condition=null)
	{} More...

	merge ($parts=null, $boolean= 'AND')
	Merges multiple composite expressions with a boolean. More...

	compare ($x, $comparison, $y=null, $type=null, $case_sensitive=null)
	Build value comparison clause. More...

	between ($x, $lower=null, $upper=null, $type=null)
	Build a between clause. More...

	getNextJoinAlias ()
	Get an index of the next available join alias. More...

	joinEntitiesTable ($from_alias= '', $from_column= 'guid', $join_type= 'inner', $joined_alias=null)
	Join entity table from alias and return joined table alias. More...

	joinMetadataTable ($from_alias= '', $from_column= 'guid', $name=null, $join_type= 'inner', $joined_alias=null)
	Join metadata table from alias and return joined table alias. More...

	joinAnnotationTable ($from_alias= '', $from_column= 'guid', $name=null, $join_type= 'inner', $joined_alias=null)
	Join annotations table from alias and return joined table alias. More...

	joinRelationshipTable ($from_alias= '', $from_column= 'guid', $name=null, $inverse=false, $join_type= 'inner', $joined_alias=null)
	Join relationship table from alias and return joined table alias. More...

Public Attributes
const	CALCULATIONS

const	TABLE_ANNOTATIONS = 'annotations'

const	TABLE_ENTITIES = 'entities'

const	TABLE_METADATA = 'metadata'

const	TABLE_RELATIONSHIPS = 'entity_relationships'

Protected Attributes
array	$joins = []

int	$join_index = 0

string	$table_name

string	$table_alias

Detailed Description

Database abstraction query builder.

Definition at line 18 of file QueryBuilder.php.

Member Function Documentation

Elgg\Database\QueryBuilder::addClause	(	Clause	$clause,
			$alias = `null`
	)

Apply clause to this instance.

Parameters

Clause	$clause	Clause
string	$alias	Table alias

Returns: static

Definition at line 65 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::between	(	$x,
		$lower = `null`,
		$upper = `null`,
		$type = `null`
	)

Build a between clause.

Parameters

string	$x	Comparison value (e.g. prefixed column name)
mixed	$lower	Lower bound
mixed	$upper	Upper bound
string	$type	Value type for sanitization/casting

Returns: CompositeExpression|null|string

Definition at line 351 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::compare	(	$x,
		$comparison,
		$y = `null`,
		$type = `null`,
		$case_sensitive = `null`
	)

Build value comparison clause.

Parameters

string	$x	Comparison value (e.g. prefixed column name)
string	$comparison	Comparison operator
mixed	$y	Value to compare against If the value is an array, comparisons will be performed in such as a way as to ensure that either all or none of the elements of the array meet the criteria, e.g. in case of LIKE will return results where at least one element matches the criteria, where as with NOT LIKE will return results where none of the criteria are met
string	$type	Value type for sanitization/casting
bool	$case_sensitive	Use case sensitive comparison for strings

Returns: CompositeExpression|null|string

Definition at line 337 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::delete	(	$delete = `null`,
		$alias = `null`
	)

{}

Definition at line 242 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::execute ( bool $track_query = true )

Parameters

bool $track_query should the query be tracked by timers and loggers

Definition at line 183 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::from	(	$from,
		$alias = `null`
	)

{}

Definition at line 207 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::getNextJoinAlias ( )

Get an index of the next available join alias.

Returns: string

Definition at line 368 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::getTableAlias ( )

Returns the alias of the primary table.

Returns: string

Definition at line 111 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::getTableName ( )

Returns the name of the primary table.

Returns: string

Definition at line 103 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::innerJoin	(	$fromAlias,
		$join,
		$alias,
		$condition = `null`
	)

{}

Definition at line 259 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::insert ( $insert = null )

{}

Definition at line 219 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::join	(	$fromAlias,
		$join,
		$alias,
		$condition = `null`
	)

{}

Definition at line 252 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::joinAnnotationTable	(	$from_alias = `''`,
		$from_column = `'guid'`,
		$name = `null`,
		$join_type = `'inner'`,
		$joined_alias = `null`
	)

Join annotations table from alias and return joined table alias.

Parameters

string	$from_alias	Main table alias
string	$from_column	Guid column name in the main table
	string\|string[]	$name Annotation name
string	$join_type	JOIN type
string	$joined_alias	Joined table alias

Returns: string

Definition at line 473 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::joinEntitiesTable	(	$from_alias = `''`,
		$from_column = `'guid'`,
		$join_type = `'inner'`,
		$joined_alias = `null`
	)

Join entity table from alias and return joined table alias.

Parameters

string	$from_alias	Main table alias
string	$from_column	Guid column name in the main table
string	$join_type	JOIN type
string	$joined_alias	Joined table alias

Returns: string

Definition at line 384 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::joinMetadataTable	(	$from_alias = `''`,
		$from_column = `'guid'`,
		$name = `null`,
		$join_type = `'inner'`,
		$joined_alias = `null`
	)

Join metadata table from alias and return joined table alias.

Parameters

string	$from_alias	Alias of the main table
string	$from_column	Guid column name in the main table
	string\|string[]	$name Metadata name(s)
string	$join_type	JOIN type
string	$joined_alias	Joined table alias

Returns: string

Definition at line 426 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::joinRelationshipTable	(	$from_alias = `''`,
		$from_column = `'guid'`,
		$name = `null`,
		$inverse = `false`,
		$join_type = `'inner'`,
		$joined_alias = `null`
	)

Join relationship table from alias and return joined table alias.

Parameters

string	$from_alias	Main table alias
string	$from_column	Guid column name in the main table
string	$name	Relationship name
bool	$inverse	Join on guid_two column
string	$join_type	JOIN type
string	$joined_alias	Joined table alias

Returns: string

Definition at line 521 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::leftJoin	(	$fromAlias,
		$join,
		$alias,
		$condition = `null`
	)

{}

Definition at line 266 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::merge	(	$parts = `null`,
		$boolean = `'AND'`
	)

Merges multiple composite expressions with a boolean.

Parameters

mixed	$parts	Composite expression(s) or string(s)
string	$boolean	AND\|OR

Returns: CompositeExpression|string

Definition at line 285 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::param	(	$value,
		$type = `null`,
		$key = `null`
	)

Sets a new parameter assigning it a unique parameter key/name if none provided Returns the name of the new parameter.

Parameters

mixed	$value	Parameter value
string	$type	Parameter type
string	$key	Parameter key/index

Returns: string

Definition at line 125 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::prefix ( $table )

Prefixes the table name with installation DB prefix.

Parameters

string $table the table to prefix

Returns: string

Definition at line 85 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::rightJoin	(	$fromAlias,
		$join,
		$alias,
		$condition = `null`
	)

{}

Definition at line 273 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::subquery	(	$table,
		$alias = `null`
	)

Creates a new SelectQueryBuilder for join/where subqueries using the DB connection of the primary QueryBuilder.

Parameters

string	$table	Main table name
string	$alias	Select alias

Returns: Select

Definition at line 50 of file QueryBuilder.php.

Elgg\Database\QueryBuilder::update	(	$update = `null`,
		$alias = `null`
	)

{}

Definition at line 230 of file QueryBuilder.php.

Member Data Documentation

int Elgg\Database\QueryBuilder::$join_index = 0

protected

Definition at line 36 of file QueryBuilder.php.

array Elgg\Database\QueryBuilder::$joins = []

protected

Definition at line 34 of file QueryBuilder.php.

string Elgg\Database\QueryBuilder::$table_alias

protected

Definition at line 40 of file QueryBuilder.php.

string Elgg\Database\QueryBuilder::$table_name

protected

Definition at line 38 of file QueryBuilder.php.

const Elgg\Database\QueryBuilder::CALCULATIONS

Initial value:

= [
        'avg',
        'count',
        'greatest',
        'least',
        'max',
        'min',
        'sum',
    ]

Definition at line 20 of file QueryBuilder.php.

const Elgg\Database\QueryBuilder::TABLE_ANNOTATIONS = 'annotations'

Definition at line 29 of file QueryBuilder.php.

const Elgg\Database\QueryBuilder::TABLE_ENTITIES = 'entities'

Definition at line 30 of file QueryBuilder.php.

const Elgg\Database\QueryBuilder::TABLE_METADATA = 'metadata'

Definition at line 31 of file QueryBuilder.php.

const Elgg\Database\QueryBuilder::TABLE_RELATIONSHIPS = 'entity_relationships'

Definition at line 32 of file QueryBuilder.php.

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

engine/classes/Elgg/Database/QueryBuilder.php

Public Member Functions

Public Attributes

Protected Attributes

Detailed Description

Member Function Documentation

Member Data Documentation