From 219400614a78ede5c143752d8e64d9876fff39ee Mon Sep 17 00:00:00 2001
From: Anton Romanov <romanov73@gmail.com>
Date: Tue, 16 Mar 2021 16:30:11 +0400
Subject: [PATCH] #4 -- Add database connection and repository example

---
 build.gradle                                  |  2 +
 .../ulstu/extractor/db/CommitRepository.java  | 42 +++++++++++++++++++
 src/main/resources/application.properties     |  7 +++-
 3 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/ru/ulstu/extractor/db/CommitRepository.java

diff --git a/build.gradle b/build.gradle
index 227b6d5..cd5160e 100644
--- a/build.gradle
+++ b/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'
 
diff --git a/src/main/java/ru/ulstu/extractor/db/CommitRepository.java b/src/main/java/ru/ulstu/extractor/db/CommitRepository.java
new file mode 100644
index 0000000..71b100d
--- /dev/null
+++ b/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());
+    }
+}
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index c5d4c5d..7b5190f 100644
--- a/src/main/resources/application.properties
+++ b/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=
\ No newline at end of file
+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
\ No newline at end of file