## wiring.build_asset_check_specs()


Return the asset check specs for the schema's rules, plus the column-schema check.


Usage

``` python
wiring.build_asset_check_specs(
    schema,
    *,
    asset,
    partitions_def=None,
    check_granularity=None,
    filter=False
)
```


## Parameters


`schema: type[dy.Schema]`  
The schema whose rules become check specs.

`asset: str | dg.AssetKey`  
The key of the asset the checks report on.

`partitions_def: dg.PartitionsDefinition | None = None`  
The asset's partitions, so each check evaluation records its partition. Dagster does not check that it matches the asset's.

`check_granularity: Granularity | None = None`  
How many checks report the schema's rules. Changing it on an asset that has already run starts a new check history. `None` uses `DAGSTER_DATAFRAMELY_CHECK_GRANULARITY` if set, else `rule`.

`filter: bool = ``False`  
Pass `True` when the asset writes its error rows instead of failing, as `dd.asset(filter=True)` does. With `False`, a check that reports for an `"error"` rule is blocking. With `True`, no rule's check is blocking, because a blocking check that fails at `ERROR` fails the step after the table is written.


## Returns


`list[dg.AssetCheckSpec]`  
The column-schema check's spec first, then one spec per rule set, to pass to `@dg.asset(check_specs=...)`.


## Raises


`InvalidSettingError`  
A setting's argument or environment variable has a value the setting does not allow.

`ReservedColumnError`  
A column name is in the reserved `dy_` namespace.

`InvalidColumnNameError`  
A column name has a character Dagster does not allow in an asset check name.

`CheckNameCollisionError`  
Two rules produce the same asset check name.

`InvalidSeverityError`  
The schema declares a severity this package cannot read.


## Examples


``` python
import dagster_dataframely as dd
from dagster_dataframely.data import OrdersSchema

specs = dd.wiring.build_asset_check_specs(OrdersSchema, asset="orders")
[(spec.name, spec.blocking) for spec in specs][:3]
```


    [('dy_schema__columns', True),
     ('dy_rule__paid_orders_have_amount', True),
     ('dy_rule__line_numbers_are_dense', True)]