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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Provide a mechanism to create a new delta from an existing delta without caring about its type","articleBody":"I am writing a method that needs to break a delta into pieces (e.g. two deltas that result in the same patch as the original delta). The current design is problematic because:\r\n\r\n1. I don't want my method to know/care what the delta type is.\r\n2. The `AbstractDelta` class is abstract, so I cannot simply invoke its constructor.\r\n3. The `AbstractDelta` subtypes do not provide `with()` methods.\r\n4. Some of your code (e.g. `DiffRowGenerator`) check the class type instance (e.g. `if (delta instanceof InsertDelta)` instead of using `AbstractDelta.getType()` so I cannot subclass `AbstractDelta` myself.\r\n\r\nProbably the easiest way to resolve this is to add an abstract `withChunks(Chunk\u003cT\u003e original, Chunk\u003cT\u003e revised)` method to `AbstractDelta`.","author":{"url":"https://github.com/cowwoc","@type":"Person","name":"cowwoc"},"datePublished":"2020-04-10T04:21:37.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/75/java-diff-utils/issues/75"}