Add method to copy graph operation to new graph or eager operation builder

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
25/100
Issue type
Feature
Clarity
Needs clarification
Activity status
Stale
Tech stack
java
Domain
backend-api-design, machine-learning

Research direction

Begin by reviewing the Java graph and eager operation APIs, then read the dependencies in issue #302 and tensorflow/tensorflow#50816. Done means defining and implementing a way to copy an operation between graphs or into an eager operation builder, including possible input substitution, with tests covering the supported cases.

Written by the indexing model from the issue text.

Description

There are a number of situations that I have ran into where I need to copy a graph operation to another graph operation, or an eager operation, sometimes substituting inputs. The most important is lifting things to init scopes in functions (it's graph -> eager). This depends on being able to access attributes and input lists (#302) and being able to set them (tensorflow/tensorflow#50816, not 100% necessary but makes things much easier). I plan on implementing it myself once those are both merged, this is a reminder and documentation if someone else ends up doing it.

Dominant language
Java
Stars
928
Forks
227
No merged PRs in 30d

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