Hydra.Workflow

A model for Hydra transformation workflows

Documentation

data HydraSchemaSpec

The specification of a Hydra schema, provided as a set of modules and a distinguished type

Constructors

HydraSchemaSpec

Fields

• hydraSchemaSpecModules :: [Module]

  The modules to include in the schema graph

• hydraSchemaSpecTypeName :: Name

  The name of the top-level type; all data which passes through the workflow will be instances of this type

Instances

Read HydraSchemaSpec

Defined in Hydra.Workflow

Methods

readsPrec :: Int -> ReadS HydraSchemaSpec

readList :: ReadS [HydraSchemaSpec]

readPrec :: ReadPrec HydraSchemaSpec

readListPrec :: ReadPrec [HydraSchemaSpec]

Show HydraSchemaSpec

Defined in Hydra.Workflow

Methods

showsPrec :: Int -> HydraSchemaSpec -> ShowS

show :: HydraSchemaSpec -> String

showList :: [HydraSchemaSpec] -> ShowS

Eq HydraSchemaSpec

Defined in Hydra.Workflow

Methods

(==) :: HydraSchemaSpec -> HydraSchemaSpec -> Bool

(/=) :: HydraSchemaSpec -> HydraSchemaSpec -> Bool

Ord HydraSchemaSpec

Defined in Hydra.Workflow

Methods

compare :: HydraSchemaSpec -> HydraSchemaSpec -> Ordering

(<) :: HydraSchemaSpec -> HydraSchemaSpec -> Bool

(<=) :: HydraSchemaSpec -> HydraSchemaSpec -> Bool

(>) :: HydraSchemaSpec -> HydraSchemaSpec -> Bool

(>=) :: HydraSchemaSpec -> HydraSchemaSpec -> Bool

max :: HydraSchemaSpec -> HydraSchemaSpec -> HydraSchemaSpec

min :: HydraSchemaSpec -> HydraSchemaSpec -> HydraSchemaSpec

_HydraSchemaSpec :: Name

_HydraSchemaSpec_modules :: Name

_HydraSchemaSpec_typeName :: Name

data LastMile s a

The last mile of a transformation, which encodes and serializes terms to a file

Constructors

LastMile

Fields

• lastMileEncoder :: Type -> Flow s (Term -> Graph -> Flow s [a])

  An encoder for terms to a list of output objects

• lastMileSerializer :: [a] -> Flow s String

  A function which serializes a list of output objects to a string representation

• lastMileFileExtension :: String

  A file extension for the generated file(s)

_LastMile :: Name

_LastMile_encoder :: Name

_LastMile_serializer :: Name

_LastMile_fileExtension :: Name

data SchemaSpec

The specification of a schema at the source end of a workflow

Constructors

SchemaSpecHydra HydraSchemaSpec

A native Hydra schema

SchemaSpecFile String

A schema provided as a file, available at the given file path

SchemaSpecProvided

A schema which will be provided within the workflow

Instances

Read SchemaSpec

Defined in Hydra.Workflow

Methods

readsPrec :: Int -> ReadS SchemaSpec

readList :: ReadS [SchemaSpec]

readPrec :: ReadPrec SchemaSpec

readListPrec :: ReadPrec [SchemaSpec]

Show SchemaSpec

Defined in Hydra.Workflow

Methods

showsPrec :: Int -> SchemaSpec -> ShowS

show :: SchemaSpec -> String

showList :: [SchemaSpec] -> ShowS

Eq SchemaSpec

Defined in Hydra.Workflow

Methods

(==) :: SchemaSpec -> SchemaSpec -> Bool

(/=) :: SchemaSpec -> SchemaSpec -> Bool

Ord SchemaSpec

Defined in Hydra.Workflow

Methods

compare :: SchemaSpec -> SchemaSpec -> Ordering

(<) :: SchemaSpec -> SchemaSpec -> Bool

(<=) :: SchemaSpec -> SchemaSpec -> Bool

(>) :: SchemaSpec -> SchemaSpec -> Bool

(>=) :: SchemaSpec -> SchemaSpec -> Bool

max :: SchemaSpec -> SchemaSpec -> SchemaSpec

min :: SchemaSpec -> SchemaSpec -> SchemaSpec

_SchemaSpec :: Name

_SchemaSpec_hydra :: Name

_SchemaSpec_file :: Name

_SchemaSpec_provided :: Name

data TransformWorkflow

The specification of a workflow which takes a schema specification, reads data from a directory, and writes data to another directory

Constructors

TransformWorkflow

Fields

• transformWorkflowName :: String

  A descriptive name for the workflow

• transformWorkflowSchemaSpec :: SchemaSpec

  The schema specification

• transformWorkflowSrcDir :: String

  The source directory

• transformWorkflowDestDir :: String

  The destination directory

Instances

Read TransformWorkflow

Defined in Hydra.Workflow

Methods

readsPrec :: Int -> ReadS TransformWorkflow

readList :: ReadS [TransformWorkflow]

readPrec :: ReadPrec TransformWorkflow

readListPrec :: ReadPrec [TransformWorkflow]

Show TransformWorkflow

Defined in Hydra.Workflow

Methods

showsPrec :: Int -> TransformWorkflow -> ShowS

show :: TransformWorkflow -> String

showList :: [TransformWorkflow] -> ShowS

Eq TransformWorkflow

Defined in Hydra.Workflow

Methods

(==) :: TransformWorkflow -> TransformWorkflow -> Bool

(/=) :: TransformWorkflow -> TransformWorkflow -> Bool

Ord TransformWorkflow

Defined in Hydra.Workflow

Methods

compare :: TransformWorkflow -> TransformWorkflow -> Ordering

(<) :: TransformWorkflow -> TransformWorkflow -> Bool

(<=) :: TransformWorkflow -> TransformWorkflow -> Bool

(>) :: TransformWorkflow -> TransformWorkflow -> Bool

(>=) :: TransformWorkflow -> TransformWorkflow -> Bool

max :: TransformWorkflow -> TransformWorkflow -> TransformWorkflow

min :: TransformWorkflow -> TransformWorkflow -> TransformWorkflow

_TransformWorkflow :: Name

_TransformWorkflow_name :: Name

_TransformWorkflow_schemaSpec :: Name

_TransformWorkflow_srcDir :: Name

_TransformWorkflow_destDir :: Name