#4 -- Add database connection and repository example

build.gradle

@@ -50,6 +50,8 @@ dependencies {
     compile group: 'org.springframework.boot', name: 'spring-boot-starter-jetty'
     compile group: 'com.fasterxml.jackson.module', name: 'jackson-module-afterburner'
     compile group: 'com.fasterxml.jackson.datatype', name: 'jackson-datatype-hibernate5'
+    compile group: 'org.springframework.boot', name: 'spring-boot-starter-jdbc'
+    compile group: 'org.postgresql', name: 'postgresql', version: '9.4.1212'
 
     compile group: 'io.springfox', name: 'springfox-boot-starter', version: '3.0.0'
 

src/main/java/ru/ulstu/extractor/db/CommitRepository.java

@@ -0,0 +1,42 @@
+package ru.ulstu.extractor.db;
+
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.RowMapper;
+import org.springframework.stereotype.Repository;
+import ru.ulstu.extractor.Commit;
+
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.List;
+
+@Repository
+public class CommitRepository {
+    private final static String SQL_SELECT_COMMITS = "SELECT * FROM commit";
+    private final static String SQL_INSERT_COMMITS = "INSERT INTO commit (hash, date, author, message) " +
+            "VALUES (?, ?, ?, ?)";
+    private final JdbcTemplate jdbcTemplate;
+
+    public CommitRepository(JdbcTemplate jdbcTemplate) {
+        this.jdbcTemplate = jdbcTemplate;
+    }
+
+    private static class CommitRowMapper implements RowMapper<Commit> {
+
+        @Override
+        public Commit mapRow(ResultSet rs, int rowNum) throws SQLException {
+            return new Commit(rs.getString("message"),
+                    rs.getString("author"),
+                    rs.getDate("date"));
+        }
+    }
+
+    public List<Commit> getCommits() {
+        return jdbcTemplate.query(SQL_SELECT_COMMITS, new CommitRowMapper());
+    }
+
+    public void saveCommit(Commit commit) {
+        jdbcTemplate.update(SQL_INSERT_COMMITS, "", commit.getDate(),
+                commit.getAuthor(),
+                commit.getMessage());
+    }
+}

src/main/resources/application.properties

@@ -2,4 +2,9 @@ spring.main.banner-mode=off
 server.port=8080
 # Available levels are: TRACE, DEBUG, INFO, WARN, ERROR, FATAL, OFF
 logging.level.ru.ulstu=DEBUG
-extractor.custom-projects-dir=
+extractor.custom-projects-dir=
+# JPA Settings
+spring.datasource.url=jdbc:postgresql://localhost:5432/repo
+spring.datasource.username=postgres
+spring.datasource.password=postgres
+spring.datasource.driverclassName=org.postgresql.Driver