1. interface
  2. Drupal
  3. \
  4. Core
  5. \
  6. Entity
  7. \
  8. Query
  9. \
  10. QueryInterface

QueryInterface

interface QueryInterface implements AlterableInterface (View source)

Interface for entity queries.

Never instantiate classes implementing this interface directly. Always use the QueryFactory class.

Methods

$this
addTag($tag)

Adds a tag to a query.

from  AlterableInterface
true
hasTag($tag)

Determines if a given query has a given tag.

from  AlterableInterface
true
hasAllTags()

Determines if a given query has all specified tags.

from  AlterableInterface
true
hasAnyTag()

Determines if a given query has any specified tag.

from  AlterableInterface
$this
addMetaData($key, $object)

Adds additional metadata to the query.

from  AlterableInterface
The
getMetaData($key)

Retrieves a given piece of metadata.

from  AlterableInterface
string
getEntityTypeId()

Gets the ID of the entity type for this query.

$this
condition($field, $value = NULL, $operator = NULL, $langcode = NULL)

Add a condition to the query or a condition group.

$this
exists($field, $langcode = NULL)

Queries for a non-empty value on a field.

$this
notExists($field, $langcode = NULL)

Queries for an empty field.

$this
pager($limit = 10, $element = NULL)

Enables a pager for the query.

$this
range(null $start = NULL, null $length = NULL)

No description

$this
sort($field, string $direction = 'ASC', $langcode = NULL)

No description

$this
count()

Makes this a count query.

$this
tableSort($headers)

Enables sortable tables for this query.

$this
accessCheck($access_check = TRUE)

No description

int|array
execute()

Execute the query.

ConditionInterface
andConditionGroup()

Creates a new group of conditions ANDed together.

ConditionInterface
orConditionGroup()

Creates a new group of conditions ORed together.

$this
currentRevision()

Queries the current revision.

$this
latestRevision()

Queries the latest revision.

$this
allRevisions()

Queries all the revisions.

Details

in AlterableInterface at line 25
$this addTag($tag)

Adds a tag to a query.

Tags are strings that identify a query. A query may have any number of tags. Tags are used to mark a query so that alter hooks may decide if they wish to take action. Tags should be all lower-case and contain only letters, numbers, and underscore, and start with a letter. That is, they should follow the same rules as PHP identifiers in general.

Parameters

$tag

The tag to add.

Return Value

$this

The called object.

in AlterableInterface at line 36
true hasTag($tag)

Determines if a given query has a given tag.

Parameters

$tag

The tag to check.

Return Value

true

if this query has been marked with this tag, FALSE otherwise.

in AlterableInterface at line 50
true hasAllTags()

Determines if a given query has all specified tags.

Each tag to check should be supplied as a separate argument.

Restore PHPDoc of variadic argument in Drupal 8.8, see https://www.drupal.org/project/drupal/issues/3029729

Return Value

true

if this query has been marked with all specified tags, FALSE otherwise.

in AlterableInterface at line 64
true hasAnyTag()

Determines if a given query has any specified tag.

Each tag to check should be supplied as a separate argument.

Restore PHPDoc of variadic argument in Drupal 8.8, see https://www.drupal.org/project/drupal/issues/3029729

Return Value

true

if this query has been marked with at least one of the specified tags, FALSE otherwise.

in AlterableInterface at line 82
$this addMetaData($key, $object)

Adds additional metadata to the query.

Often, a query may need to provide additional contextual data to alter hooks. Alter hooks may then use that information to decide if and how to take action.

Parameters

$key

The unique identifier for this piece of metadata. Must be a string that follows the same rules as any other PHP identifier.
$object

The additional data to add to the query. May be any valid PHP variable.

Return Value

$this

The called object.

in AlterableInterface at line 93
The getMetaData($key)

Retrieves a given piece of metadata.

Parameters

$key

The unique identifier for the piece of metadata to retrieve.

Return Value

The

previously attached metadata object, or NULL if one doesn't exist.

at line 22
string getEntityTypeId()

Gets the ID of the entity type for this query.

Return Value

string

at line 101
$this condition($field, $value = NULL, $operator = NULL, $langcode = NULL)

Add a condition to the query or a condition group.

For example, to find all entities containing both the Turkish 'merhaba' and the Polish 'siema' within a 'greetings' text field:

Parameters

$field

Name of the field being queried. It must contain a field name, optionally followed by a column name. The column can be the reference property, usually "entity", for reference fields and that can be followed similarly by a field name and so on. Additionally, the target entity type can be specified by appending the ":target_entity_type_id" to "entity". Some examples:

  • nid
  • tags.value
  • tags
  • tags.entity.name
  • tags.entity:taxonomy_term.name
  • uid.entity.name
  • uid.entity:user.name "tags" "is the same as "tags.value" as value is the default column. If two or more conditions have the same field names they apply to the same delta within that field. In order to limit the condition to a specific item a numeric delta should be added between the field name and the column name. @code ->condition('tags.5.value', 'news') @endcode This will require condition to be satisfied on a specific delta of the field. The condition above will require the 6th value of the field to match the provided value. Further, it's possible to create a condition on the delta itself by using '%delta'. For example, @code ->condition('tags.%delta', 5) @endcode will find only entities which have at least six tags. Finally, the condition on the delta itself accompanied with a condition on the value will require the value to appear in the specific delta range. For example, @code ->condition('tags.%delta', 0, '>')) ->condition('tags.%delta.value', 'news')) @endcode will only find the "news" tag if it is not the first value. It should be noted that conditions on specific deltas and delta ranges are only supported when querying content entities.
$value

The value for $field. In most cases, this is a scalar and it's treated as case-insensitive. For more complex operators, it is an array. The meaning of each element in the array is dependent on $operator.
$operator

Possible values:

  • '=', '<>', '>', '>=', '<', '<=', 'STARTS_WITH', 'CONTAINS', 'ENDS_WITH': These operators expect $value to be a literal of the same type as the column.
  • 'IN', 'NOT IN': These operators expect $value to be an array of literals of the same type as the column.
  • 'BETWEEN': This operator expects $value to be an array of two literals of the same type as the column.
$langcode

Language code (optional). If omitted, any translation satisfies the condition. However, if two or more conditions omit the langcode within one condition group then they are presumed to apply to the same translation. If within one condition group one condition has a langcode and another does not they are not presumed to apply to the same translation.

Return Value

$this

See also

andConditionGroup
orConditionGroup

at line 113
$this exists($field, $langcode = NULL)

Queries for a non-empty value on a field.

Parameters

$field

Name of a field.
$langcode

Language code (optional).

Return Value

$this

at line 125
$this notExists($field, $langcode = NULL)

Queries for an empty field.

Parameters

$field

Name of a field.
$langcode

Language code (optional).

Return Value

$this

at line 140
$this pager($limit = 10, $element = NULL)

Enables a pager for the query.

Parameters

$limit

An integer specifying the number of elements per page. If passed a false value (FALSE, 0, NULL), the pager is disabled.
$element

An optional integer to distinguish between multiple pagers on one page. If not provided, one is automatically calculated.

Return Value

$this

The called object.

at line 148
$this range(null $start = NULL, null $length = NULL)

No description

Parameters

null $start
null $length

Return Value

$this

The called object.

at line 159
$this sort($field, string $direction = 'ASC', $langcode = NULL)

No description

Parameters

$field

Name of a field.
string $direction
$langcode

Language code (optional).

Return Value

$this

The called object.

at line 169
$this count()

Makes this a count query.

For count queries, execute() returns the number entities found.

Return Value

$this

The called object.

at line 183
$this tableSort($headers)

Enables sortable tables for this query.

Parameters

$headers

An array of headers of the same structure as described in template_preprocess_table(). Use a 'specifier' in place of a 'field' to specify what to sort on. This can be an entity or a field as described in condition().

Return Value

$this

The called object.

at line 189
$this accessCheck($access_check = TRUE)

No description

Parameters

$access_check

Return Value

$this

The called object.

at line 199
int|array execute()

Execute the query.

Return Value

int|array

Returns an integer for count queries or an array of ids. The values of the array are always entity ids. The keys will be revision ids if the entity supports revision and entity ids if not.

at line 222
ConditionInterface andConditionGroup()

Creates a new group of conditions ANDed together.

For example, consider a drawing entity type with a 'figures' multi-value field containing 'shape' and 'color' columns. To find all drawings containing both a red triangle and a blue circle:

Return Value

ConditionInterface

at line 250
ConditionInterface orConditionGroup()

Creates a new group of conditions ORed together.

For example, consider a map entity with an 'attributes' field containing 'building_type' and 'color' columns. To find all green and red bikesheds:

Return Value

ConditionInterface

at line 257
$this currentRevision()

Queries the current revision.

Return Value

$this

at line 268
$this latestRevision()

Queries the latest revision.

The latest revision is the most recent revision of an entity. This will be either the default revision, or a pending revision if one exists and it is newer than the default.

Return Value

$this

at line 275
$this allRevisions()

Queries all the revisions.

Return Value

$this