Cloud Firestore V1 Client - Class StructuredQuery (1.40.0)

Reference documentation and code samples for the Cloud Firestore V1 Client class StructuredQuery.

A Firestore query.

Generated from protobuf message google.firestore.v1.StructuredQuery

Namespace

Google \ Cloud \ Firestore \ V1

Methods

__construct

Constructor.

Parameters
Name	Description
`data`	`array` Optional. Data for populating the Message object.
`↳ select`	`Google\Cloud\Firestore\V1\StructuredQuery\Projection` Optional sub-set of the fields to return. This acts as a DocumentMask over the documents returned from a query. When not set, assumes that the caller wants all fields returned.
`↳ from`	`array<Google\Cloud\Firestore\V1\StructuredQuery\CollectionSelector>` The collections to query.
`↳ where`	`Google\Cloud\Firestore\V1\StructuredQuery\Filter` The filter to apply.
`↳ order_by`	`array<Google\Cloud\Firestore\V1\StructuredQuery\Order>` The order to apply to the query results. Firestore allows callers to provide a full ordering, a partial ordering, or no ordering at all. In all cases, Firestore guarantees a stable ordering through the following rules: * The `order_by` is required to reference all fields used with an inequality filter. * All fields that are required to be in the `order_by` but are not already present are appended in lexicographical ordering of the field name. * If an order on `__name__` is not specified, it is appended by default. Fields are appended with the same sort direction as the last order specified, or 'ASCENDING' if no order was specified. For example: * `ORDER BY a` becomes `ORDER BY a ASC, __name__ ASC` * `ORDER BY a DESC` becomes `ORDER BY a DESC, __name__ DESC` * `WHERE a > 1` becomes `WHERE a > 1 ORDER BY a ASC, __name__ ASC` * `WHERE __name__ > ... AND a > 1` becomes `WHERE __name__ > ... AND a > 1 ORDER BY a ASC, __name__ ASC`
`↳ start_at`	`Google\Cloud\Firestore\V1\Cursor` A potential prefix of a position in the result set to start the query at. The ordering of the result set is based on the `ORDER BY` clause of the original query. `SELECT * FROM k WHERE a = 1 AND b > 2 ORDER BY b ASC, __name__ ASC;` This query's results are ordered by `(b ASC, __name__ ASC)`. Cursors can reference either the full ordering or a prefix of the location, though it cannot reference more fields than what are in the provided `ORDER BY`. Continuing off the example above, attaching the following start cursors will have varying impact: - `START BEFORE (2, /k/123)`: start the query right before `a = 1 AND b > 2 AND __name__ > /k/123`. - `START AFTER (10)`: start the query right after `a = 1 AND b > 10`. Unlike `OFFSET` which requires scanning over the first N results to skip, a start cursor allows the query to begin at a logical position. This position is not required to match an actual result, it will scan forward from this position to find the next document. Requires: * The number of values cannot be greater than the number of fields specified in the `ORDER BY` clause.
`↳ end_at`	`Google\Cloud\Firestore\V1\Cursor` A potential prefix of a position in the result set to end the query at. This is similar to `START_AT` but with it controlling the end position rather than the start position. Requires: * The number of values cannot be greater than the number of fields specified in the `ORDER BY` clause.
`↳ offset`	`int` The number of documents to skip before returning the first result. This applies after the constraints specified by the `WHERE`, `START AT`, & `END AT` but before the `LIMIT` clause. Requires: * The value must be greater than or equal to zero if specified.
`↳ limit`	`Google\Protobuf\Int32Value` The maximum number of results to return. Applies after all other constraints. Requires: * The value must be greater than or equal to zero if specified.

getSelect

Optional sub-set of the fields to return.

This acts as a DocumentMask over the documents returned from a query. When not set, assumes that the caller wants all fields returned.

Returns
Type	Description
`Google\Cloud\Firestore\V1\StructuredQuery\Projection\|null`

hasSelect

clearSelect

setSelect

Optional sub-set of the fields to return.

This acts as a DocumentMask over the documents returned from a query. When not set, assumes that the caller wants all fields returned.

Parameter
Name	Description
`var`	`Google\Cloud\Firestore\V1\StructuredQuery\Projection`

Returns
Type	Description
`$this`

getFrom

The collections to query.

Returns
Type	Description
`Google\Protobuf\Internal\RepeatedField`

setFrom

The collections to query.

Parameter
Name	Description
`var`	`array<Google\Cloud\Firestore\V1\StructuredQuery\CollectionSelector>`

Returns
Type	Description
`$this`

getWhere

The filter to apply.

Returns
Type	Description
`Google\Cloud\Firestore\V1\StructuredQuery\Filter\|null`

hasWhere

clearWhere

setWhere

The filter to apply.

Parameter
Name	Description
`var`	`Google\Cloud\Firestore\V1\StructuredQuery\Filter`

Returns
Type	Description
`$this`

getOrderBy

The order to apply to the query results.

Firestore allows callers to provide a full ordering, a partial ordering, or no ordering at all. In all cases, Firestore guarantees a stable ordering through the following rules:

The order_by is required to reference all fields used with an inequality filter.
All fields that are required to be in the order_by but are not already present are appended in lexicographical ordering of the field name.
If an order on __name__ is not specified, it is appended by default. Fields are appended with the same sort direction as the last order specified, or 'ASCENDING' if no order was specified. For example:
ORDER BY a becomes ORDER BY a ASC, __name__ ASC
ORDER BY a DESC becomes ORDER BY a DESC, __name__ DESC
WHERE a > 1 becomes WHERE a > 1 ORDER BY a ASC, __name__ ASC
WHERE __name__ > ... AND a > 1 becomes WHERE __name__ > ... AND a > 1 ORDER BY a ASC, __name__ ASC

Returns
Type	Description
`Google\Protobuf\Internal\RepeatedField`

setOrderBy

The order to apply to the query results.

Firestore allows callers to provide a full ordering, a partial ordering, or no ordering at all. In all cases, Firestore guarantees a stable ordering through the following rules:

The order_by is required to reference all fields used with an inequality filter.
All fields that are required to be in the order_by but are not already present are appended in lexicographical ordering of the field name.
If an order on __name__ is not specified, it is appended by default. Fields are appended with the same sort direction as the last order specified, or 'ASCENDING' if no order was specified. For example:
ORDER BY a becomes ORDER BY a ASC, __name__ ASC
ORDER BY a DESC becomes ORDER BY a DESC, __name__ DESC
WHERE a > 1 becomes WHERE a > 1 ORDER BY a ASC, __name__ ASC
WHERE __name__ > ... AND a > 1 becomes WHERE __name__ > ... AND a > 1 ORDER BY a ASC, __name__ ASC

Parameter
Name	Description
`var`	`array<Google\Cloud\Firestore\V1\StructuredQuery\Order>`

Returns
Type	Description
`$this`

getStartAt

A potential prefix of a position in the result set to start the query at.

The ordering of the result set is based on the ORDER BY clause of the original query.

SELECT * FROM k WHERE a = 1 AND b > 2 ORDER BY b ASC, __name__ ASC;

This query's results are ordered by (b ASC, __name__ ASC). Cursors can reference either the full ordering or a prefix of the location, though it cannot reference more fields than what are in the provided ORDER BY. Continuing off the example above, attaching the following start cursors will have varying impact:

START BEFORE (2, /k/123): start the query right before a = 1 AND b > 2 AND __name__ > /k/123.
START AFTER (10): start the query right after a = 1 AND b > 10. Unlike OFFSET which requires scanning over the first N results to skip, a start cursor allows the query to begin at a logical position. This position is not required to match an actual result, it will scan forward from this position to find the next document. Requires:
The number of values cannot be greater than the number of fields specified in the ORDER BY clause.

Returns
Type	Description
`Google\Cloud\Firestore\V1\Cursor\|null`

hasStartAt

clearStartAt

setStartAt

A potential prefix of a position in the result set to start the query at.

The ordering of the result set is based on the ORDER BY clause of the original query.

SELECT * FROM k WHERE a = 1 AND b > 2 ORDER BY b ASC, __name__ ASC;

START BEFORE (2, /k/123): start the query right before a = 1 AND b > 2 AND __name__ > /k/123.
START AFTER (10): start the query right after a = 1 AND b > 10. Unlike OFFSET which requires scanning over the first N results to skip, a start cursor allows the query to begin at a logical position. This position is not required to match an actual result, it will scan forward from this position to find the next document. Requires:
The number of values cannot be greater than the number of fields specified in the ORDER BY clause.

Parameter
Name	Description
`var`	`Google\Cloud\Firestore\V1\Cursor`

Returns
Type	Description
`$this`

getEndAt

A potential prefix of a position in the result set to end the query at.

This is similar to START_AT but with it controlling the end position rather than the start position. Requires:

The number of values cannot be greater than the number of fields specified in the ORDER BY clause.

Returns
Type	Description
`Google\Cloud\Firestore\V1\Cursor\|null`

hasEndAt

clearEndAt

setEndAt

A potential prefix of a position in the result set to end the query at.

This is similar to START_AT but with it controlling the end position rather than the start position. Requires:

The number of values cannot be greater than the number of fields specified in the ORDER BY clause.

Parameter
Name	Description
`var`	`Google\Cloud\Firestore\V1\Cursor`

Returns
Type	Description
`$this`

getOffset

The number of documents to skip before returning the first result.

This applies after the constraints specified by the WHERE, START AT, & END AT but before the LIMIT clause. Requires:

The value must be greater than or equal to zero if specified.

Returns
Type	Description
`int`

setOffset

The number of documents to skip before returning the first result.

This applies after the constraints specified by the WHERE, START AT, & END AT but before the LIMIT clause. Requires:

The value must be greater than or equal to zero if specified.

Parameter
Name	Description
`var`	`int`

Returns
Type	Description
`$this`

getLimit

The maximum number of results to return.

Applies after all other constraints. Requires:

The value must be greater than or equal to zero if specified.

Returns
Type	Description
`Google\Protobuf\Int32Value\|null`

hasLimit

clearLimit

getLimitValue

Returns the unboxed value from getLimit()

The maximum number of results to return. Applies after all other constraints. Requires:

The value must be greater than or equal to zero if specified.

Returns
Type	Description
`int\|null`

setLimit

The maximum number of results to return.

Applies after all other constraints. Requires:

The value must be greater than or equal to zero if specified.

Parameter
Name	Description
`var`	`Google\Protobuf\Int32Value`

Returns
Type	Description
`$this`

setLimitValue

Sets the field by wrapping a primitive type in a Google\Protobuf\Int32Value object.

The maximum number of results to return. Applies after all other constraints. Requires:

The value must be greater than or equal to zero if specified.

Parameter
Name	Description
`var`	`int\|null`

Returns
Type	Description
`$this`