Series.lastValue + lastDate

application.properties

@@ -5,4 +5,4 @@ spring.datasource.driverClassName=org.h2.Driver
 spring.datasource.username=sa
 spring.datasource.password=password
 #-
-spring.jpa.hibernate.ddl-auto=create
+spring.jpa.hibernate.ddl-auto=update

src/main/java/de/ph87/data/series/Series.java

@@ -5,6 +5,7 @@ import jakarta.annotation.Nullable;
 import jakarta.persistence.*;
 import lombok.*;
 
+import java.time.ZonedDateTime;
 import java.util.HashSet;
 import java.util.Set;
 
@@ -36,14 +37,25 @@ public class Series {
   @ToString.Exclude
   private Period period;
 
+  @Setter
+  @NonNull
+  @Column(nullable = false)
+  private ZonedDateTime lastDate;
+
+  @Setter
+  @Column(nullable = false)
+  private double lastValue;
+
   @NonNull
   @ElementCollection
   private Set<String> aliases = new HashSet<>();
 
-  public Series(@NonNull final String name, @NonNull final SeriesMode mode, @NonNull final String unit) {
+  public Series(@NonNull final String name, @NonNull final SeriesMode mode, @NonNull final ZonedDateTime date, final double value, String unit) {
     this.name = name;
     this.mode = mode;
     this.unit = unit;
+    this.lastDate = date;
+    this.lastValue = value;
   }
 
 }

src/main/java/de/ph87/data/series/SeriesMode.java

@@ -5,21 +5,29 @@ import lombok.NonNull;
 import java.util.function.BiFunction;
 
 public enum SeriesMode {
-  MEASURE((first, second) -> second - first),
-  COUNTER((first, second) -> second - first),
-  INCREASING((first, second) -> second - first),
-  DECREASING((first, second) -> first - second),
+  MEASURE((first, second) -> second - first, (last, value) -> value),
+  COUNTER((first, second) -> second - first, Double::sum),
+  INCREASING((first, second) -> second - first, (last, value) -> value),
+  DECREASING((first, second) -> first - second, (last, value) -> value),
   ;
 
   @NonNull
   private final BiFunction<Double, Double, Double> delta;
 
-  SeriesMode(@NonNull final BiFunction<Double, Double, Double> delta) {
+  @NonNull
+  private final BiFunction<Double, Double, Double> add;
+
+  SeriesMode(@NonNull final BiFunction<Double, Double, Double> delta, @NonNull final BiFunction<Double, Double, Double> add) {
     this.delta = delta;
+    this.add = add;
   }
 
   public double getDelta(final double first, final double second) {
     return delta.apply(first, second);
   }
 
+  public double update(final double series, final double value) {
+    return add.apply(series, value);
+  }
+
 }

src/main/java/de/ph87/data/series/SeriesService.java

@@ -6,6 +6,8 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.time.ZonedDateTime;
+
 @Slf4j
 @Service
 @Transactional
@@ -15,8 +17,8 @@ public class SeriesService {
   private final SeriesRepository seriesRepository;
 
   @NonNull
-  public Series getOrCreateByName(@NonNull final String name, @NonNull final SeriesMode mode, @NonNull final String unit) {
-    final Series series = seriesRepository.findByNameOrAliasesContains(name, name).orElseGet(() -> seriesRepository.save(new Series(name, mode, unit)));
+  public Series getOrCreateByName(@NonNull final String name, @NonNull final SeriesMode mode, @NonNull final ZonedDateTime date, final double value, @NonNull final String unit) {
+    final Series series = seriesRepository.findByNameOrAliasesContains(name, name).orElseGet(() -> seriesRepository.save(new Series(name, mode, date, value, unit)));
     if (series.getMode() != mode) {
       throw new RuntimeException("'mode' argument for getOrCreateByName does not match 'mode' of existing Series: mode=%s, series=%s".formatted(mode, series));
     }

src/main/java/de/ph87/data/series/consumption/ConsumptionService.java

@@ -31,10 +31,15 @@ public class ConsumptionService {
   @EventListener(ConsumptionEvent.class)
   public void onConsumptionEvent(@NonNull final ConsumptionEvent event) {
     log.debug("Handling ConsumptionEvent: {}", event);
-    final Series series = seriesService.getOrCreateByName(event.getName(), event.isIncreasing() ? SeriesMode.INCREASING : SeriesMode.DECREASING, event.getUnit());
+
+    final Series series = seriesService.getOrCreateByName(event.getName(), event.isIncreasing() ? SeriesMode.INCREASING : SeriesMode.DECREASING, event.getDate(), event.getValue(), event.getUnit());
+    series.setLastDate(event.getDate());
+    series.setLastValue(series.getMode().update(series.getLastValue(), event.getValue()));
+
     final Period period = periodService.getOrCreatePeriod(series, event);
     period.setLastDate(event.getDate());
-    period.setLastValue(event.getValue());
+    period.setLastValue(series.getMode().update(period.getLastValue(), event.getValue()));
+
     for (final Unit unit : Unit.values()) {
       final ZonedDateTime aligned = unit.align(event.getDate());
       final Optional<Consumption> existingOptional = consumptionRepository.findByIdPeriodAndIdUnitAndIdAligned(period, unit, aligned);

src/main/java/de/ph87/data/series/counter/CounterService.java

@@ -24,7 +24,12 @@ public class CounterService {
 
   @EventListener(CounterEvent.class)
   public void onCounterEvent(@NonNull final CounterEvent event) {
-    final Series series = seriesService.getOrCreateByName(event.getName(), SeriesMode.COUNTER, event.getUnit());
+    log.debug("Handling CounterEvent: {}", event);
+
+    final Series series = seriesService.getOrCreateByName(event.getName(), SeriesMode.COUNTER, event.getDate(), event.getCount(), event.getUnit());
+    series.setLastDate(event.getDate());
+    series.setLastValue(series.getMode().update(series.getLastValue(), event.getCount()));
+
     for (final Unit unit : Unit.values()) {
       final SeriesIntervalKey id = new SeriesIntervalKey(series, unit, event.getDate());
       counterRepository.findById(id)

src/main/java/de/ph87/data/series/measure/MeasureService.java

@@ -24,7 +24,12 @@ public class MeasureService {
 
   @EventListener(MeasureEvent.class)
   public void onMeasureEvent(@NonNull final MeasureEvent event) {
-    final Series series = seriesService.getOrCreateByName(event.getName(), SeriesMode.MEASURE, event.getUnit());
+    log.debug("Handling MeasureEvent: {}", event);
+
+    final Series series = seriesService.getOrCreateByName(event.getName(), SeriesMode.MEASURE, event.getDate(), event.getValue(), event.getUnit());
+    series.setLastDate(event.getDate());
+    series.setLastValue(series.getMode().update(series.getLastValue(), event.getValue()));
+
     for (final Unit unit : Unit.values()) {
       final SeriesIntervalKey id = new SeriesIntervalKey(series, unit, event.getDate());
       measureRepository.findById(id)