Reimplement in Java

pom.xml

@@ -9,12 +9,11 @@
     <version>0.1.0-SNAPSHOT</version>
 
     <properties>
-        <scala-library.version>2.12.6</scala-library.version>
-        <scala-maven-plugin.version>3.3.2</scala-maven-plugin.version>
+        <java.version>8</java.version>
+        <lombok.version>1.16.20</lombok.version>
+        <jgit.version>4.11.0.201803080745-r</jgit.version>
         <junit.version>5.2.0</junit.version>
         <assertj.version>3.9.1</assertj.version>
-        <jgit.version>4.11.0.201803080745-r</jgit.version>
-        <java.version>8</java.version>
     </properties>
 
     <dependencies>
@@ -30,9 +29,10 @@
         </dependency>
 
         <dependency>
-            <groupId>org.scala-lang</groupId>
-            <artifactId>scala-library</artifactId>
-            <version>${scala-library.version}</version>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>${lombok.version}</version>
+            <optional>true</optional>
         </dependency>
 
         <dependency>
@@ -66,11 +66,6 @@
     </dependencyManagement>
     <build>
         <plugins>
-            <plugin>
-                <groupId>net.alchim31.maven</groupId>
-                <artifactId>scala-maven-plugin</artifactId>
-                <version>${scala-maven-plugin.version}</version>
-            </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>

src/main/java/net/kemitix/gitdb/GitDB.java

@@ -0,0 +1,19 @@
+package net.kemitix.gitdb;
+
+import org.eclipse.jgit.api.errors.GitAPIException;
+import org.eclipse.jgit.lib.Repository;
+
+import java.nio.file.Path;
+
+public interface GitDB {
+
+    static GitDB local(Path dbDir) throws GitAPIException {
+        return new GitDBLocal(dbDir);
+    }
+
+    void close();
+
+    Repository getRepository();
+
+    Path getGitDir();
+}

src/main/java/net/kemitix/gitdb/GitDBLocal.java

@@ -0,0 +1,32 @@
+package net.kemitix.gitdb;
+
+import lombok.Getter;
+import org.eclipse.jgit.api.Git;
+import org.eclipse.jgit.api.errors.GitAPIException;
+import org.eclipse.jgit.lib.Repository;
+
+import java.nio.file.Path;
+
+class GitDBLocal implements GitDB {
+
+    @Getter
+    private final Repository repository;
+
+    @Getter
+    private final Path gitDir;
+
+    GitDBLocal(final Path gitDir) throws GitAPIException {
+        this.gitDir = gitDir;
+        this.repository = Git
+                .init()
+                .setBare(true)
+                .setGitDir(gitDir.toFile())
+                .call()
+                .getRepository();
+    }
+
+    @Override
+    public void close() {
+        repository.close();
+    }
+}

src/main/scala/net/kemitix/gitdb/GitDB.scala

@@ -1,27 +0,0 @@
-package net.kemitix.gitdb
-
-import java.nio.file.Path
-
-import org.eclipse.jgit.lib.Repository
-import org.eclipse.jgit.storage.file.FileRepositoryBuilder
-
-import scala.beans.BeanProperty
-
-class GitDB (val dir: Path) {
-
-  @BeanProperty
-  val repository: Repository = {
-    val fileRepositoryBuilder = new FileRepositoryBuilder
-    fileRepositoryBuilder.setGitDir(dir.toFile)
-    fileRepositoryBuilder.build()
-  }
-
-  def close: Unit = repository.close()
-
-}
-
-object GitDB {
-  def init(dir: Path): GitDB = {
-    new GitDB(dir)
-  }
-}

src/test/java/net/kemitix/gitdb/GitDBTest.java

@@ -1,5 +1,6 @@
 package net.kemitix.gitdb;
 
+import org.eclipse.jgit.api.errors.GitAPIException;
 import org.eclipse.jgit.lib.Repository;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Test;
@@ -15,21 +16,25 @@ import static org.assertj.core.api.Assertions.assertThat;
 class GitDBTest {
 
     private final Path dbDir = Files.createTempDirectory("gitdb");
-    private final GitDB gitDB = GitDB.init(dbDir);
+    private final GitDB gitDB = GitDB.local(dbDir);
 
-    GitDBTest() throws IOException {
+    GitDBTest() throws IOException, GitAPIException {
     }
 
     @Test
     void shouldInitialiseGitDB() {
         //then
         assertThat(gitDB).isNotNull();
-        assertThat(gitDB.dir()).isDirectory()
+        assertThat(gitDB.getGitDir()).isDirectory()
                 .isEqualTo(dbDir);
         final Repository repository = gitDB.getRepository();
         assertThat(repository.isBare()).isTrue();
+        assertThat(repository.getObjectDatabase().exists()).isTrue();
+        assertThat(repository.getRefDatabase()).isNotNull();
     }
 
+
+
     @AfterEach
     void tearDown() throws IOException {
         gitDB.close();