Implements database, adds profiles

h2/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>ch.gtache.fro</groupId>
+        <artifactId>fro</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>fro-h2</artifactId>
+
+    <properties>
+        <h2.version>2.4.240</h2.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>ch.gtache.fro</groupId>
+            <artifactId>fro-database</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <version>${h2.version}</version>
+        </dependency>
+    </dependencies>
+</project>

h2/src/main/java/ch/gtache/fro/h2/H2ConfigurationManager.java

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+package ch.gtache.fro.h2;
+
+public class H2ConfigurationManager {
+}

h2/src/main/java/ch/gtache/fro/modules/h2/H2Module.java

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+package ch.gtache.fro.modules.h2;
+
+import dagger.Module;
+import dagger.Provides;
+import jakarta.inject.Singleton;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+/**
+ * Dagger module for H2
+ */
+@Module
+public final class H2Module {
+
+    private H2Module() {
+
+    }
+
+    @Provides
+    @Singleton
+    static Connection providesJdbcConnection() {
+        try {
+            final var connection = DriverManager.getConnection("jdbc:h2:mem:");
+            Runtime.getRuntime().addShutdownHook(new Thread(() -> {
+                try {
+                    connection.close();
+                } catch (final SQLException e) {
+                    throw new RuntimeException("Error closing H2 connection", e);
+                }
+            }));
+            return connection;
+        } catch (final SQLException e) {
+            throw new RuntimeException("Error connecting to H2", e);
+        }
+    }
+}

h2/src/main/java/module-info.java

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+/**
+ * H2 module for the FRO application
+ */
+module ch.gtache.fro.h2 {
+    requires transitive ch.gtache.fro.database;
+    exports ch.gtache.fro.h2;
+    exports ch.gtache.fro.modules.h2;
+}