Add selectValue method

.github/workflows/build-and-publish.yaml

@@ -8,7 +8,7 @@ on:
 jobs:
   build-and-publish:
     name: Java Gradle
-    uses: bakdata/ci-templates/.github/workflows/java-gradle-library.yaml@1.40.6
+    uses: bakdata/ci-templates/.github/workflows/java-gradle-library.yaml@1.41.0
     with:
       java-version: 17
     secrets:

.github/workflows/release.yaml

@@ -16,7 +16,7 @@ on:
 jobs:
   java-gradle-release:
     name: Java Gradle
-    uses: bakdata/ci-templates/.github/workflows/java-gradle-release.yaml@1.40.6
+    uses: bakdata/ci-templates/.github/workflows/java-gradle-release.yaml@1.41.0
     with:
       java-version: 17
       release-type: "${{ inputs.release-type }}"

build.gradle.kts

@@ -5,7 +5,7 @@ plugins {
     `java-library`
     id("net.researchgate.release") version "3.0.2"
     id("com.bakdata.sonar") version "1.1.17"
-    id("com.bakdata.sonatype") version "1.1.14"
+    id("com.bakdata.sonatype") version "1.2.1"
     id("org.hildan.github.changelog") version "2.2.0"
     id("io.freefair.lombok") version "8.4"
 }

src/main/java/com/bakdata/util/seq2/Seq2.java

@@ -1064,6 +1064,15 @@ default <K> PairSeq<K, T> selectKey(final Function<? super T, ? extends K> keyMa
         return this.mapToPair(keyMapper, Function.identity());
     }
 
+    /**
+     * Map a {@code Seq2} to a {@code PairSeq}
+     *
+     * @see Seq#map(Function)
+     */
+    default <V> PairSeq<T, V> selectValue(final Function<? super T, ? extends V> valueMapper) {
+        return this.mapToPair(Function.identity(), valueMapper);
+    }
+
     @Override
     default Seq2<T> sequential() {
         return seq(this.toSeq().sequential());

src/test/java/com/bakdata/util/seq2/Seq2Test.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c), 2023 bakdata GmbH
+ * Copyright (c), 2024 bakdata GmbH
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -67,6 +67,14 @@ void shouldSelectKey() {
                 .containsExactlyInAnyOrder(new Tuple2<>(2, 1), new Tuple2<>(3, 2));
     }
 
+    @Test
+    void shouldSelectValue() {
+        assertThat((Stream<Tuple2<Integer, Integer>>) Seq2.seq(List.of(1, 2))
+                .selectValue(i -> i + 1))
+                .hasSize(2)
+                .containsExactlyInAnyOrder(new Tuple2<>(1, 2), new Tuple2<>(2, 3));
+    }
+
     @Test
     void shouldFlatMapToOptionalPair() {
         assertThat((Stream<Tuple2<Integer, Integer>>) Seq2.seq(List.of(1, 2))