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Trace field lineage

Recipe IDio.moderne.mainframe.lineage.FindFieldLineage

Artifactio.moderne.recipe:recipes-mainframe

Trace where a field's value comes from and where it goes, following it through moves, computations and the records that carry it, out to the files, queues, maps, IMS segments and screens on the program's boundary. This answers the question impact analysis and regulatory reporting both ask: what feeds this value, and where does it end up. Each answer carries the route it took, so it can be checked rather than trusted.

Single recipeOpenRewriteModerne Proprietary License

Try in PlatformTry this recipe in the Moderne platform. Not a user yet? You’ll get a no-setup demo environment, with nothing to install or configure.

Options

2 parameters

1 required1 optional

Parameter	Example	Type	Required
fieldName	WS-SSN	String	Required
The field to trace, matched against the declared name. Accepts a regular expression, so a family of fields can be traced at once.
direction	—	String	Optional
SINK for where the field's value ends up, SOURCE for where it came from, BOTH for each. Defaults to BOTH.

Usage

Run this recipe

You will need to have configured the Moderne CLI on your machine before you can run the following command.

shell

mod run . --recipe FindFieldLineage --recipe-option "fieldName=WS-SSN"

If the recipe is not available locally, then you can install it using:

RELEASE resolves to the newest release and LATEST to the newest build of any kind, including snapshots. Either one lets mod config recipes upgrade pull in later versions without editing this command; a pinned version stays where you put it.

RELEASE

mod config recipes jar install io.moderne.recipe:recipes-mainframe:RELEASE

LATEST

mod config recipes jar install io.moderne.recipe:recipes-mainframe:LATEST

Pinned version

mod config recipes jar install io.moderne.recipe:recipes-mainframe:0.1.0

Data tables

Field lineage

io.moderne.mainframe.analysis.table.FieldLineage

Where a field's value comes from and where it goes, with the route it takes.

Export after a run

mod study . --last-recipe-run \
  --data-table io.moderne.mainframe.analysis.table.FieldLineage

Column	Description
Program	The COBOL program.
Field	The field the trace started from, qualified by the records containing it.
Direction	SOURCE for where the value came from, SINK for where it goes.
Endpoint kind	What the value crosses the program boundary through: a file, a queue, a map, an IMS segment, the terminal, or a called program.
Endpoint	The resource name, where the statement names one.
Steps	How many assignments separate the field from the endpoint. Zero means the field is read or written directly.
Path	The route the value takes, statement by statement. This is what makes the answer reviewable rather than something to be taken on trust.

Source files that had results

org.openrewrite.table.SourcesFileResults

Source files that were modified by the recipe run.

Export after a run

mod study . --last-recipe-run \
  --data-table org.openrewrite.table.SourcesFileResults

Column	Description
Source path before the run	The source path of the file before the run. null when a source file was created during the run.
Source path after the run	A recipe may modify the source path. This is the path after the run. null when a source file was deleted during the run.
Parent of the recipe that made changes	In a hierarchical recipe, the parent of the recipe that made a change. Empty if this is the root of a hierarchy or if the recipe is not hierarchical at all.
Recipe that made changes	The specific recipe that made a change.
Estimated time saving	An estimated effort that a developer to fix manually instead of using this recipe, in unit of seconds.
Cycle	The recipe cycle in which the change was made.

Source files that had search results

org.openrewrite.table.SearchResults

Search results that were found during the recipe run.

Export after a run

mod study . --last-recipe-run \
  --data-table org.openrewrite.table.SearchResults

Column	Description
Source path of search result before the run	The source path of the file with the search result markers present.
Source path of search result after run the run	A recipe may modify the source path. This is the path after the run. null when a source file was deleted during the run.
Result	The trimmed printed tree of the LST element that the marker is attached to.
Description	The content of the description of the marker.
Recipe that added the search marker	The specific recipe that added the Search marker.

Source files that errored on a recipe

org.openrewrite.table.SourcesFileErrors

The details of all errors produced by a recipe run.

Export after a run

mod study . --last-recipe-run \
  --data-table org.openrewrite.table.SourcesFileErrors

Column	Description
Source path	The file that failed to parse.
Recipe that made changes	The specific recipe that made a change.
Stack trace	The stack trace of the failure.

Recipe performance

org.openrewrite.table.RecipeRunStats

Statistics used in analyzing the performance of recipes.

Export after a run

mod study . --last-recipe-run \
  --data-table org.openrewrite.table.RecipeRunStats

Column	Description
The recipe	The recipe whose stats are being measured both individually and cumulatively.
Source file count	The number of source files the recipe ran over.
Source file changed count	The number of source files which were changed in the recipe run. Includes files created, deleted, and edited.
Cumulative scanning time (ns)	The total time spent across the scanning phase of this recipe.
Max scanning time (ns)	The max time scanning any one source file.
Cumulative edit time (ns)	The total time spent across the editing phase of this recipe.
Max edit time (ns)	The max time editing any one source file.