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What changes were proposed in this pull request?
Add a test-scoped demo that converts an Iceberg 1.11 expression JSON string into the
read-restrictions.required-row-filtershape proposed in apache/iceberg#13879. Document the input, output, and supported case.Why are the changes needed?
Iceberg 1.11 parses the older
term/valuepredicate form, while the proposal usesleft/rightand field ID references. This demo shows the conversion for equality on a string column.Does this PR introduce any user-facing change?
No. It adds test code and developer documentation only.
How was this patch tested?
All four test methods passed through direct compilation and execution.
git diff --checkpassed. The standard Gradle test and Spotless runs could not complete because the root filesystem is full.