Add support for new operations of BITOP command in Redis Community Edition 8.2

[atakavci]

Redis CE 8.2 supports new operations often required with BITOP command;

DIFF(X, Y1, Y2, …)
members of X that are not members of any of Y1, Y2 ,…
X ∧ ¬(Y1 ∨ Y2 ∨ …)

DIFF1(X, Y1, Y2, …)
members of one or more of Y1, Y2 ,… that are not members of X
¬X ∧ (Y1 ∨ Y2 ∨ …)

ANDOR(X, Y1, Y2, …)
members of X that are also members of one or more of Y1, Y2 ,…
X ∧ (Y1 ∨ Y2 ∨ …)

ONE(X1, X2, …) -
members of exactly one of X1, X2, …
For two bitmaps this is equivalent to XOR(X1, X2) (AKA symmetric difference., X1 ⊕ X2). However, for more than two bitmaps, XOR has little practical use.
In general this is COUNT(X1, X2, …) == 1

See more details here.

[Copilot]

Pull Request Overview

This PR adds support for the new BITOP operations (DIFF, DIFF1, ANDOR, ONE) introduced in Redis Community Edition 8.2.

• Defines new commands in RedisStringCommands, cluster NodeSelectionString*Commands, and their async/reactive variants
• Extends CommandKeyword, RedisCommandBuilder, and test suites (integration and builder unit tests) to handle the added operations

Reviewed Changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/test/java/io/lettuce/core/commands/BitCommandIntegrationTests.java	Added integration tests for DIFF, DIFF1, ANDOR, ONE
src/test/java/io/lettuce/core/RedisCommandBuilderUnitTests.java	Added unit tests for command encoding of new ops
src/main/templates/io/lettuce/core/api/RedisStringCommands.java	Declared new bitopDiff, bitopDiff1, bitopAndor, bitopOne methods
src/main/java/io/lettuce/core/protocol/CommandKeyword.java	Added DIFF, DIFF1, ANDOR, ONE keywords
src/main/java/io/lettuce/core/RedisCommandBuilder.java	Implemented builder methods for new operations
src/main/java/io/lettuce/core/AbstractRedisReactiveCommands.java	Added reactive overrides for new operations
src/main/java/io/lettuce/core/AbstractRedisAsyncCommands.java	Added async overrides for new operations
src/main/java/io/lettuce/core/cluster/api/sync/NodeSelectionStringCommands.java	Declared cluster sync variants of new methods
src/main/java/io/lettuce/core/cluster/api/async/NodeSelectionStringAsyncCommands.java	Declared cluster async variants of new methods

Comments suppressed due to low confidence (1)

src/test/java/io/lettuce/core/commands/BitCommandIntegrationTests.java:512

• [nitpick] The comment is misleading—ANDOR takes one source key and at least one additional key. Consider updating it to reflect that only one comparison key is required.

        // ANDOR requires at least two keys - test with empty second key

[Copilot]

The version check threshold for these new BITOP operations should be updated to Redis 8.2.0 (e.g., "8.2.0") instead of "8.1.240" to align with their official introduction.

Suggested change

	assumeTrue(RedisConditions.of(redis).hasVersionGreaterOrEqualsTo("8.1.240"));
	assumeTrue(RedisConditions.of(redis).hasVersionGreaterOrEqualsTo("8.2.0"));

[uglide]

LGTM. @tishun WDYT?

[tishun]

Awesome work, thanks @atakavci !

[ggivo]

LGTM