`spinedb_api.filters.value_transformer`

Provides a database query manipulator that applies mathematical transformations to parameter values.

Module Contents

`apply_value_transform_to_parameter_value_sq`(db_map, ...)	Applies renaming to parameter definition subquery.
`value_transformer_config`(instructions)	Creates a config dict for transformer.
`value_transformer_from_dict`(db_map, config)	Applies value transformer manipulator to given database map.
`value_transformer_config_to_shorthand`(config)	Makes a shorthand string from transformer configuration.
`value_transformer_shorthand_to_config`(shorthand)	Makes configuration dictionary out of a shorthand string.

spinedb_api.filters.value_transformer.apply_value_transform_to_parameter_value_sq(db_map, instructions)[source]

Applies renaming to parameter definition subquery.

Parameters:

db_map (DatabaseMapping) – a database map
instructions (dict) – mapping from entity class name to mapping from parameter name to list of instructions

spinedb_api.filters.value_transformer.value_transformer_config(instructions)[source]

Creates a config dict for transformer.

Parameters:: instructions (dict) – mapping from entity class name to mapping from parameter name to list of instructions
Returns:: transformer configuration
Return type:: dict

spinedb_api.filters.value_transformer.value_transformer_from_dict(db_map, config)[source]

Applies value transformer manipulator to given database map.

Parameters:

spinedb_api.filters.value_transformer.value_transformer_config_to_shorthand(config)[source]

Makes a shorthand string from transformer configuration.

spinedb_api.filters.value_transformer.value_transformer_shorthand_to_config(shorthand)[source]

Makes configuration dictionary out of a shorthand string.