9.2.6. Pipeline¶

Pipeline components.

class junifer.pipeline.PipelineStepMixin¶

Mixin class for a pipeline step.

fit_transform(input, **kwargs)¶

Fit and transform.

Parameters:

inputdict: The Junifer Data object.
**kwargsdict: Extra keyword arguments passed to the concrete class’ _fit_transform().

Returns:

dict: The processed output of the pipeline step.

get_output_type(input_type)¶

Get output type.

Parameters:

input_typestr: The data type input to the marker.

Returns:

str: The storage type output by the marker.

validate(input)¶

Validate the the pipeline step.

Parameters:

inputlist of str: The input to the pipeline step.

Returns:

list of str: The output of the pipeline step.

validate_input(input)¶

Validate the input to the pipeline step.

Parameters:

inputlist of str: The input to the pipeline step. The list must contain the available Junifer Data dictionary keys.

Returns:

list of str: The actual elements of the input that will be processed by this pipeline step.

Raises:

ValueError: If the input does not have the required data.

class junifer.pipeline.UpdateMetaMixin¶

Mixin class for updating meta.

update_meta(input, step_name)¶

Update metadata.

Parameters:

inputdict: The data object to update.
step_namestr: The name of the pipeline step.

junifer.pipeline.WorkDirManager(*args, **kwargs)¶

Get the only instance for a class.

Parameters:

*argstuple: The positional arguments to pass to the class.
**kwargsdict: The keyword arguments to pass to the class.

Returns:

class: The only instance of the class.

9.2.7. Registry¶

Provide functions for registry.

junifer.pipeline.registry.build(step, name, baseclass, init_params=None)¶

Ensure that the given object is an instance of the given class.

Parameters:

stepstr: Name of the step.
namestr: Name of the function.
baseclassclass: Class to be checked against.
init_paramsdict or None, optional: Parameters to pass to the base class constructor (default None).

Returns:

object: An instance of the given base class.

Raises:

RuntimeError: If there is a problem creating the instance.
ValueError: If the created object with the given name is not an instance of the base class.

junifer.pipeline.registry.get_class(step, name)¶

Get the class of the registered function for a given step.

Parameters:

stepstr: Name of the step.
namestr: Name of the function.

Returns:

class: Registered function class.

Raises:

ValueError: If the step or name is invalid.

junifer.pipeline.registry.get_step_names(step)¶

Get the names of the registered functions for a given step.

Parameters:

stepstr: Name of the step.

Returns:

list: List of registered function names.

Raises:

ValueError: If the step is invalid.

junifer.pipeline.registry.register(step, name, klass)¶

Parameters:

stepstr: Name of the step.
namestr: Name of the function.
klassclass: Class to be registered.

Raises:

ValueError: If the step is invalid.