Modeling first attempt for DB

src/main/java/de/etecture/ga/config/DataBaseConfiguration.java

@@ -0,0 +1,44 @@
+package de.etecture.ga.config;
+
+import java.time.Duration;
+import java.time.temporal.ChronoUnit;
+import java.util.Arrays;
+import java.util.List;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+import org.springframework.data.convert.ReadingConverter;
+import org.springframework.data.convert.WritingConverter;
+import org.springframework.data.jdbc.repository.config.AbstractJdbcConfiguration;
+import org.springframework.stereotype.Component;
+
+
+@Component
+public class DataBaseConfiguration extends AbstractJdbcConfiguration {
+	
+
+	@Override
+	protected List<?> userConverters() {
+		return Arrays.asList(new DurationToLongConverter(), new LongToDurationConverter());
+	}
+
+	@WritingConverter
+	public class DurationToLongConverter implements Converter<Duration, Long> {
+
+		@Override
+		public Long convert(Duration duration) {
+			return duration.toNanos();
+		}
+	}
+
+	@ReadingConverter
+	public class LongToDurationConverter implements Converter<Long, Duration> {
+
+		@Override
+		public Duration convert(Long duration) {
+			return Duration.of(duration, ChronoUnit.NANOS);
+		}
+	}
+
+}