Remove support for Java and Scala (#530)

.github/workflows/publish-development-version.yml

@@ -34,7 +34,7 @@ jobs:
       - name: Assemble
         uses: gradle/gradle-build-action@v2
         with:
-          arguments: assemble -x:xef-java-examples:assemble -x:xef-scala:assemble -x:xef-scala-examples:assemble
+          arguments: assemble
 
       - name: Upload reports
         if: failure()
@@ -46,36 +46,4 @@ jobs:
       - name: Publish development version
         uses: gradle/gradle-build-action@v2
         with:
-          arguments: publishToSonatype -x:xef-scala:publishToSonatype closeAndReleaseSonatypeStagingRepository
-
-  publish-modules-with-loom:
-    timeout-minutes: 30
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-          ref: ${{ github.ref_name }}
-
-      - name: Set up Java
-        uses: actions/setup-java@v3
-        with:
-          distribution: 'zulu'
-          java-version: 20
-
-      - name: assemble
-        uses: gradle/gradle-build-action@v2
-        with:
-          arguments: :xef-scala:assemble :xef-java-examples:assemble
-
-      - name: Upload reports
-        if: failure()
-        uses: actions/upload-artifact@v3
-        with:
-          name: 'reports-${{ matrix.os }}'
-          path: '**/build/reports/**'
-
-      - name: Publish development version
-        uses: gradle/gradle-build-action@v2
-        with:
-          arguments: :xef-scala:publishToSonatype closeAndReleaseSonatypeStagingRepository
+          arguments: publishToSonatype closeAndReleaseSonatypeStagingRepository

.github/workflows/publish.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Assemble
         uses: gradle/gradle-build-action@v2
         with:
-          arguments: assemble -x:xef-java-examples:assemble -x:xef-scala:assemble -x:xef-scala-examples:assemble
+          arguments: assemble
 
       - name: Upload reports
         if: failure()
@@ -44,36 +44,4 @@ jobs:
       - name: Publish final version
         uses: gradle/gradle-build-action@v2
         with:
-          arguments: publishToSonatype -x:xef-scala:publishToSonatype closeSonatypeStagingRepository
-
-  publish-modules-with-loom:
-    timeout-minutes: 30
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-          ref: ${{ github.ref_name }}
-
-      - name: Set up Java
-        uses: actions/setup-java@v3
-        with:
-          distribution: 'zulu'
-          java-version: 20
-
-      - name: assemble
-        uses: gradle/gradle-build-action@v2
-        with:
-          arguments: :xef-scala:assemble :xef-java-examples:assemble
-
-      - name: Upload reports
-        if: failure()
-        uses: actions/upload-artifact@v3
-        with:
-          name: 'reports-${{ matrix.os }}'
-          path: '**/build/reports/**'
-
-      - name: Publish final version
-        uses: gradle/gradle-build-action@v2
-        with:
-          arguments: :xef-scala:publishToSonatype closeSonatypeStagingRepository
+          arguments: publishToSonatype closeSonatypeStagingRepository

README.md

@@ -8,7 +8,7 @@ Our goal is to make the move to this new world as simple as possible for the dev
 xef.ai is packaged in two layers:
 1. Core libraries bringing integration with the basic services in an AI application. 
    These libraries expose an _idiomatic_ interface, so there's one per programming language.
-   At this moment we support Kotlin and Scala.
+   At this moment we support Kotlin.
 2. Integrations with other libraries which complement the core mission of xef.ai.
 
 xef.ai draws inspiration from libraries like [LangChain](https://docs.langchain.com/docs/)
@@ -47,11 +47,9 @@ strategies.
 
 Libraries are published in Maven Central, under the `com.xebia` group.
 
-1. `xef-kotlin` for Kotlin support, `xef-scala` for Scala, `xef-java` for Java.
+1. `xef-kotlin` for Kotlin support.
 2. The name of a library we provide integration for, like `xef-lucene`.
 
-<details>
-<summary><img src="https://upload.wikimedia.org/wikipedia/commons/3/37/Kotlin_Icon_2021.svg" height="15px" alt="Kotlin logo"> Gradle (Kotlin DSL)</summary>
 
 Libraries are published in Maven Central. You may need to  add that repository explicitly
 in your build, if you haven't done it before.
@@ -73,51 +71,10 @@ We publish all libraries at once under the same version, so
 [version catalogs](https://docs.gradle.org/current/userguide/platforms.html#sec:sharing-catalogs)
 could be useful.
 
-</details>
-
-<details>
-<summary><img src="https://www.scala-lang.org/resources/img/frontpage/scala-spiral.png" height="15px" alt="Scala logo"> SBT</summary>
-
-```sbt
-libraryDependencies += "com.xebia" %% "xef-scala" % "<version>"
-```
-
-> **Warning**
-> `xef-scala` is currently only available for Scala 3, and depends on project [Loom](https://openjdk.org/projects/loom/),
-> so you will need at least Java 20 to use the library.
-
-</details>
-
-<details>
-<summary><img src="https://upload.wikimedia.org/wikipedia/commons/5/52/Apache_Maven_logo.svg" height="15px" alt="Maven logo"> Maven</summary>
-
-Libraries are published in Maven Central. You may need to  add that repository explicitly
-in your build, if you haven't done it before.
-
-```xml
-<dependency>
-   <groupId>com.xebia</groupId>
-   <artifactId>xef-java</artifactId>
-   <version>x.x.x</version>
-   <type>pom</type>
-   <scope>runtime</scope>
-</dependency>
-```
-
-</details>
-
 ## 📖 Quick Introduction
 
-In this small introduction we look at the main features of xef, including the `conversation` function.
-
-- [<img src="https://upload.wikimedia.org/wikipedia/commons/3/37/Kotlin_Icon_2021.svg" height="15px" alt="Kotlin logo"> Kotlin version](https://github.com/xebia-functional/xef/blob/main/docs/intro/kotlin.md)
-- [<img src="https://www.scala-lang.org/resources/img/frontpage/scala-spiral.png" height="15px" alt="Scala logo"> Scala version](https://github.com/xebia-functional/xef/blob/main/docs/intro/scala.md)
-- [<img src="https://upload.wikimedia.org/wikipedia/en/thumb/3/30/Java_programming_language_logo.svg/234px-Java_programming_language_logo.svg.png" height="15px" alt="Java logo"> Java version](https://github.com/xebia-functional/xef/blob/main/docs/intro/java.md)
+In [this](https://github.com/xebia-functional/xef/blob/main/docs/intro.md) small introduction we look at the main features of xef, including the `conversation` function.
 
 ## 🚀 Examples
 
-You can also have a look at the examples to have a feeling of how using the library looks like.
-
-- [<img src="https://upload.wikimedia.org/wikipedia/commons/3/37/Kotlin_Icon_2021.svg" height="15px" alt="Kotlin logo"> Examples in Kotlin](https://github.com/xebia-functional/xef/tree/main/examples/kotlin/src/main/kotlin/com/xebia/functional/xef/conversation)
-- [<img src="https://www.scala-lang.org/resources/img/frontpage/scala-spiral.png" height="15px" alt="Scala logo"> Examples in Scala](https://github.com/xebia-functional/xef/tree/main/examples/scala/src/main/scala/com/xebia/functional/xef/examples/scala)
-- [<img src="https://upload.wikimedia.org/wikipedia/en/thumb/3/30/Java_programming_language_logo.svg/234px-Java_programming_language_logo.svg.png" height="15px" alt="Java logo"> Examples in Java](https://github.com/xebia-functional/xef/tree/main/examples/java/src/main/java/com/xebia/functional/xef/java/auto)
+You can also have a look at the [examples](https://github.com/xebia-functional/xef/tree/main/examples/src/main/kotlin/com/xebia/functional/xef/conversation) to have a feeling of how using the library looks like.

core/TECHNICAL.MD

@@ -14,11 +14,9 @@ The breakdown is only in terms of JVM, since that's where we _mostly_ care about
 
 We include the following dependencies in our _core_ module to implement a _common_ layer to interact with LLMs.
 The dependency on Kotlin Stdlib is unavoidable, since we use Kotlin as our main language.
-We also require KotlinX Coroutines such that we can leverage the `suspend` keyword in our API and expose `Future` to the
-Java/Scala API.
-Additionally, we also have a need for a HTTP client, and a serialization framework. Here we use Ktor and KotlinX
-Serialization respectively,
-and Xef relies on the CIO engine for Ktor, which avoids any additional dependencies.
+We also require KotlinX Coroutines such that we can leverage the `suspend` keyword in our API.
+Additionally, we also have a need for an HTTP client, and a serialization framework. Here we use Ktor and KotlinX
+Serialization respectively, and Xef relies on the CIO engine for Ktor, which avoids any additional dependencies.
 
 - kotlin-stdlib (1810 Kb = 1598 Kb + 212 Kb)
 - kotlinx-coroutines-core (1608 Kb = 1442 Kb + 166 Kb)