When to use CursorJoiner / MatrixCursor / MergeCursor?

MergeCursor, as you indicate, is designed to concatenate two data sets “vertically”, adding more rows. CursorJoiner is designed to concatenate two data sets “horizontally”, adding more columns. You can think of this as akin to implementing a simple SQL JOIN. MatrixCursor allows you to build something that implements the Cursor interface out of pure data, … Read more

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