Slice, Unit->Interval, Today+Yesterday

src/main/angular/README.md

@@ -14,9 +14,9 @@ Run `ng generate component component-name` to generate a new component. You can
 
 Run `ng build` to build the project. The build artifacts will be stored in the `dist/` directory.
 
-## Running unit tests
+## Running interval tests
 
-Run `ng test` to execute the unit tests via [Karma](https://karma-runner.github.io).
+Run `ng test` to execute the interval tests via [Karma](https://karma-runner.github.io).
 
 ## Running end-to-end tests
 

src/main/angular/src/app/api/series/Series.ts

@@ -1,6 +1,6 @@
 import {Period} from "./consumption/period/Period";
 import {validateDate, validateNumber, validateString} from "../validators";
-import {Value} from "../Value/Value";
+import {Value} from "../value/Value";
 
 export class Series extends Value {
 

src/main/angular/src/app/api/series/constants.ts

@@ -0,0 +1,27 @@
+export const ELECTRICITY_GRID_PURCHASED_ENERGY = 'electricity.grid.purchase.energy';
+export const ELECTRICITY_GRID_DELIVERED_ENERGY = 'electricity.grid.delivery.energy';
+export const ELECTRICITY_GRID_POWER = 'electricity.grid.power';
+
+export const ELECTRICITY_PHOTOVOLTAIC_PRODUCED = 'electricity.photovoltaic.energy';
+export const ELECTRICITY_PHOTOVOLTAIC_POWER = 'electricity.photovoltaic.power';
+
+export const SCHLAFZIMMER_TEMPERATURE = 'schlafzimmer.temperature';
+export const SCHLAFZIMMER_HUMIDITY_RELATIVE = 'schlafzimmer.humidity_relative';
+export const SCHLAFZIMMER_HUMIDITY_ABSOLUTE = 'schlafzimmer.humidity_absolute';
+
+export const GARTEN_TEMPERATURE = 'garten.temperature';
+export const GARTEN_HUMIDITY_RELATIVE = 'garten.humidity_relative';
+export const GARTEN_HUMIDITY_ABSOLUTE = 'garten.humidity_absolute';
+
+export const HEATING_ROOM_TEMPERATURE = 'heating.room.temperature';
+export const HEATING_ROOM_HUMIDITY_RELATIVE = 'heating.room.humidity_relative';
+export const HEATING_ROOM_HUMIDITY_ABSOLUTE = 'heating.room.humidity_absolute';
+export const HEATING_EXHAUST_TEMPERATURE = 'heating.exhaust.temperature';
+export const HEATING_BUFFER_SUPPLY_TEMPERATURE = 'heating.buffer.supply.temperature';
+export const HEATING_BUFFER_RETURN_TEMPERATURE = 'heating.buffer.return.temperature';
+export const HEATING_BUFFER_COLD_TEMPERATURE = 'heating.buffer.cold.temperature';
+export const HEATING_BUFFER_INNER_TEMPERATURE = 'heating.buffer.inner.temperature';
+export const HEATING_BUFFER_HOT_TEMPERATURE = 'heating.buffer.hot.temperature';
+export const HEATING_BUFFER_CIRCULATION_TEMPERATURE = 'heating.buffer.circulation.temperature';
+export const HEATING_LOOP_SUPPLY_TEMPERATURE = 'heating.loop.supply.temperature';
+export const HEATING_LOOP_RETURN_TEMPERATURE = 'heating.loop.return.temperature';

src/main/angular/src/app/api/series/consumption/interval/Interval.ts

@@ -0,0 +1,8 @@
+export enum Interval {
+  Quarterhour = 'Quarterhour',
+  Hour = 'Hour',
+  Day = 'Day',
+  Week = 'Week',
+  Month = 'Month',
+  Year = 'Year',
+}

src/main/angular/src/app/api/series/consumption/slice/Slice.ts

@@ -0,0 +1,27 @@
+import {validateDate, validateNumber, validateString} from "../../../validators";
+import {Value} from "../../../value/Value";
+
+export class Slice extends Value {
+
+  static readonly EMPTY: Slice = new Slice(null, null, '');
+
+  constructor(
+    date: Date | null,
+    amount: number | null,
+    unit: string,
+  ) {
+    super(date, amount, unit);
+  }
+
+  static fromJson(json: any): Slice {
+    if (json === null) {
+      return new Slice(null, null, '');
+    }
+    return new Slice(
+      validateDate(json['date']),
+      validateNumber(json['amount']),
+      validateString(json['unit']),
+    );
+  }
+
+}

src/main/angular/src/app/api/series/consumption/slice/slice.service.ts

@@ -0,0 +1,23 @@
+import {Injectable} from '@angular/core';
+import {ApiService} from "../../../api.service";
+import {Next} from "../../../types";
+import {Slice} from "./Slice";
+
+import {Interval} from "../interval/Interval";
+
+@Injectable({
+  providedIn: 'root'
+})
+export class SliceService {
+
+  constructor(
+    private readonly api: ApiService,
+  ) {
+    // -
+  }
+
+  at(seriesName: string, interval: Interval, offset: number, next: Next<Slice>): void {
+    this.api.getSingle(['Slice', 'seriesName', seriesName, 'interval', interval, 'offset', offset], Slice.fromJson, next);
+  }
+
+}

src/main/angular/src/app/api/series/series-cache.service.ts

@@ -2,6 +2,7 @@ import {Injectable} from '@angular/core';
 import {Series} from "./Series";
 import {ApiService} from "../api.service";
 import {SeriesService} from "./series.service";
+import {ELECTRICITY_GRID_DELIVERED_ENERGY, ELECTRICITY_GRID_POWER, ELECTRICITY_GRID_PURCHASED_ENERGY, ELECTRICITY_PHOTOVOLTAIC_POWER, ELECTRICITY_PHOTOVOLTAIC_PRODUCED, GARTEN_HUMIDITY_ABSOLUTE, GARTEN_HUMIDITY_RELATIVE, GARTEN_TEMPERATURE, HEATING_BUFFER_CIRCULATION_TEMPERATURE, HEATING_BUFFER_COLD_TEMPERATURE, HEATING_BUFFER_HOT_TEMPERATURE, HEATING_BUFFER_INNER_TEMPERATURE, HEATING_BUFFER_RETURN_TEMPERATURE, HEATING_BUFFER_SUPPLY_TEMPERATURE, HEATING_EXHAUST_TEMPERATURE, HEATING_LOOP_RETURN_TEMPERATURE, HEATING_LOOP_SUPPLY_TEMPERATURE, HEATING_ROOM_HUMIDITY_ABSOLUTE, HEATING_ROOM_HUMIDITY_RELATIVE, HEATING_ROOM_TEMPERATURE, SCHLAFZIMMER_HUMIDITY_ABSOLUTE, SCHLAFZIMMER_HUMIDITY_RELATIVE, SCHLAFZIMMER_TEMPERATURE} from "./constants";
 
 export function returnUpdatedSeriesIfNameAndNewer(fresh: Series, old: Series, name: string): Series {
   if (fresh.name !== name) {
@@ -80,34 +81,34 @@ export class SeriesCacheService {
   }
 
   private seriesUpdate(series: Series) {
-    this.gridPurchased = returnUpdatedSeriesIfNameAndNewer(series, this.gridPurchased, 'electricity.grid.purchase.energy');
+    this.gridPurchased = returnUpdatedSeriesIfNameAndNewer(series, this.gridPurchased, ELECTRICITY_GRID_PURCHASED_ENERGY);
-    this.gridDelivered = returnUpdatedSeriesIfNameAndNewer(series, this.gridDelivered, 'electricity.grid.delivery.energy');
+    this.gridDelivered = returnUpdatedSeriesIfNameAndNewer(series, this.gridDelivered, ELECTRICITY_GRID_DELIVERED_ENERGY);
-    this.gridPower = returnUpdatedSeriesIfNameAndNewer(series, this.gridPower, 'electricity.grid.power');
+    this.gridPower = returnUpdatedSeriesIfNameAndNewer(series, this.gridPower, ELECTRICITY_GRID_POWER);
 
-    this.photovoltaicProduced = returnUpdatedSeriesIfNameAndNewer(series, this.photovoltaicProduced, 'electricity.photovoltaic.energy');
+    this.photovoltaicProduced = returnUpdatedSeriesIfNameAndNewer(series, this.photovoltaicProduced, ELECTRICITY_PHOTOVOLTAIC_PRODUCED);
-    this.photovoltaicPower = returnUpdatedSeriesIfNameAndNewer(series, this.photovoltaicPower, 'electricity.photovoltaic.power');
+    this.photovoltaicPower = returnUpdatedSeriesIfNameAndNewer(series, this.photovoltaicPower, ELECTRICITY_PHOTOVOLTAIC_POWER);
 
-    this.schlafzimmerTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.schlafzimmerTemperature, 'schlafzimmer.temperature');
+    this.schlafzimmerTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.schlafzimmerTemperature, SCHLAFZIMMER_TEMPERATURE);
-    this.schlafzimmerHumidityRelative = returnUpdatedSeriesIfNameAndNewer(series, this.schlafzimmerHumidityRelative, 'schlafzimmer.humidity_relative');
+    this.schlafzimmerHumidityRelative = returnUpdatedSeriesIfNameAndNewer(series, this.schlafzimmerHumidityRelative, SCHLAFZIMMER_HUMIDITY_RELATIVE);
-    this.schlafzimmerHumidityAbsolute = returnUpdatedSeriesIfNameAndNewer(series, this.schlafzimmerHumidityAbsolute, 'schlafzimmer.humidity_absolute');
+    this.schlafzimmerHumidityAbsolute = returnUpdatedSeriesIfNameAndNewer(series, this.schlafzimmerHumidityAbsolute, SCHLAFZIMMER_HUMIDITY_ABSOLUTE);
 
-    this.outdoorTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.outdoorTemperature, 'garten.temperature');
+    this.outdoorTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.outdoorTemperature, GARTEN_TEMPERATURE);
-    this.outdoorHumidityRelative = returnUpdatedSeriesIfNameAndNewer(series, this.outdoorHumidityRelative, 'garten.humidity_relative');
+    this.outdoorHumidityRelative = returnUpdatedSeriesIfNameAndNewer(series, this.outdoorHumidityRelative, GARTEN_HUMIDITY_RELATIVE);
-    this.outdoorHumidityAbsolute = returnUpdatedSeriesIfNameAndNewer(series, this.outdoorHumidityAbsolute, 'garten.humidity_absolute');
+    this.outdoorHumidityAbsolute = returnUpdatedSeriesIfNameAndNewer(series, this.outdoorHumidityAbsolute, GARTEN_HUMIDITY_ABSOLUTE);
 
-    this.heatingRoomTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingRoomTemperature, 'heating.room.temperature');
+    this.heatingRoomTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingRoomTemperature, HEATING_ROOM_TEMPERATURE);
-    this.heatingRoomHumidityRelative = returnUpdatedSeriesIfNameAndNewer(series, this.heatingRoomHumidityRelative, 'heating.room.humidity_relative');
+    this.heatingRoomHumidityRelative = returnUpdatedSeriesIfNameAndNewer(series, this.heatingRoomHumidityRelative, HEATING_ROOM_HUMIDITY_RELATIVE);
-    this.heatingRoomHumidityAbsolute = returnUpdatedSeriesIfNameAndNewer(series, this.heatingRoomHumidityAbsolute, 'heating.room.humidity_absolute');
+    this.heatingRoomHumidityAbsolute = returnUpdatedSeriesIfNameAndNewer(series, this.heatingRoomHumidityAbsolute, HEATING_ROOM_HUMIDITY_ABSOLUTE);
 
-    this.heatingExhaustTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingExhaustTemperature, 'heating.exhaust.temperature');
+    this.heatingExhaustTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingExhaustTemperature, HEATING_EXHAUST_TEMPERATURE);
-    this.heatingBufferSupplyTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingBufferSupplyTemperature, 'heating.buffer.supply.temperature');
+    this.heatingBufferSupplyTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingBufferSupplyTemperature, HEATING_BUFFER_SUPPLY_TEMPERATURE);
-    this.heatingBufferReturnTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingBufferReturnTemperature, 'heating.buffer.return.temperature');
+    this.heatingBufferReturnTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingBufferReturnTemperature, HEATING_BUFFER_RETURN_TEMPERATURE);
-    this.heatingBufferColdTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingBufferColdTemperature, 'heating.buffer.cold.temperature');
+    this.heatingBufferColdTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingBufferColdTemperature, HEATING_BUFFER_COLD_TEMPERATURE);
-    this.heatingBufferInnerTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingBufferInnerTemperature, 'heating.buffer.inner.temperature');
+    this.heatingBufferInnerTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingBufferInnerTemperature, HEATING_BUFFER_INNER_TEMPERATURE);
-    this.heatingBufferHotTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingBufferHotTemperature, 'heating.buffer.hot.temperature');
+    this.heatingBufferHotTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingBufferHotTemperature, HEATING_BUFFER_HOT_TEMPERATURE);
-    this.heatingBufferCirculationTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingBufferCirculationTemperature, 'heating.buffer.circulation.temperature');
+    this.heatingBufferCirculationTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingBufferCirculationTemperature, HEATING_BUFFER_CIRCULATION_TEMPERATURE);
-    this.heatingLoopSupplyTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingLoopSupplyTemperature, 'heating.loop.supply.temperature');
+    this.heatingLoopSupplyTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingLoopSupplyTemperature, HEATING_LOOP_SUPPLY_TEMPERATURE);
-    this.heatingLoopReturnTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingLoopReturnTemperature, 'heating.loop.return.temperature');
+    this.heatingLoopReturnTemperature = returnUpdatedSeriesIfNameAndNewer(series, this.heatingLoopReturnTemperature, HEATING_LOOP_RETURN_TEMPERATURE);
   }
 
 }

src/main/angular/src/app/api/value/Display.ts

@@ -12,4 +12,4 @@ export class DisplayValue {
 
 }
 
-export  type Display = DisplayValue | null;
+export  type Display = DisplayValue | string | null;

src/main/angular/src/app/api/value/Value.ts

@@ -5,7 +5,7 @@ export class Value {
   constructor(
     readonly date: Date | null,
     readonly value: number | null,
-    readonly unit: string | null,
+    readonly unit: string,
   ) {
     // -
   }
@@ -56,17 +56,17 @@ export class Value {
 
   unary(func: (v: number) => number): Value {
     if (this.value === null) {
-      return new Value(null, null, null);
+      return new Value(null, null, '');
     }
     const value = func(this.value);
     return new Value(this.date, value, this.unit);
   }
 
   binary(other: Value, func: (a: number, b: number) => number): Value {
-    if (this.date === null || this.value === null || this.unit === null) {
+    if (this.date === null || this.value === null) {
-      return new Value(null, null, other.unit || null);
+      return new Value(null, null, other.unit);
     }
-    if (other.date === null || other.value === null || other.unit === null) {
+    if (other.date === null || other.value === null) {
       return new Value(null, null, this.unit);
     }
     const oldestDate = this.getOldestDate(other);
@@ -75,10 +75,10 @@ export class Value {
   }
 
   compare(other: Value, comparing?: (a: number, b: number) => number): number {
-    if (this.date === null || this.value === null || this.unit === null) {
+    if (this.date === null || this.value === null) {
       return -1;
     }
-    if (other.date === null || other.value === null || other.unit === null) {
+    if (other.date === null || other.value === null) {
       return +1;
     }
     if (comparing === undefined) {

src/main/angular/src/app/api/value/ValueConstant.ts

@@ -4,7 +4,7 @@ export class ValueConstant extends Value {
 
   constructor(
     value: number | null,
-    unit: string | null,
+    unit: string,
   ) {
     super(new Date(Date.now()), value, unit);
   }

src/main/angular/src/app/pages/dashboard/air/dashboard-air-tile.component.ts

@@ -1,6 +1,6 @@
 import {Component, Input} from '@angular/core';
 import {ValueListComponent} from "../../../shared/value-list/value-list.component";
-import {Display, DisplayValue} from "../../../api/Value/Display";
+import {Display, DisplayValue} from "../../../api/value/Display";
 import {SeriesCacheService} from "../../../api/series/series-cache.service";
 
 @Component({

src/main/angular/src/app/pages/dashboard/dashboard.component.html

@@ -1,5 +1,5 @@
 <div class="tile">
-  <app-dashboard-electricity-tile [now]="now"></app-dashboard-electricity-tile>
+  <app-dashboard-electricity-tile [now]="now" [slowUpdate]="slowUpdate"></app-dashboard-electricity-tile>
 </div>
 
 <div class="tile">

src/main/angular/src/app/pages/dashboard/dashboard.component.ts

@@ -7,6 +7,7 @@ import {Subscription, timer} from "rxjs";
 import {DashboardHeatingTileComponent} from "./heating/dashboard-heating-tile.component";
 
 const UPDATE_INTERVAL_MILLIS = 1000;
+const SLOW_UPDATE_INTERVAL_MILLIS = 60 * 1000;
 
 @Component({
   selector: 'app-dashboard',
@@ -26,10 +27,15 @@ export class DashboardComponent implements OnInit, OnDestroy {
 
   protected now: Date = new Date();
 
+  protected slowUpdate: Date = new Date();
+
   private timer?: Subscription;
 
+  private slowUpdateTimer?: Subscription;
+
   ngOnInit(): void {
     this.timer = timer(0, UPDATE_INTERVAL_MILLIS).subscribe(() => this.now = new Date());
+    this.slowUpdateTimer = timer(0, SLOW_UPDATE_INTERVAL_MILLIS).subscribe(() => this.slowUpdate = new Date());
   }
 
   ngOnDestroy(): void {

src/main/angular/src/app/pages/dashboard/electricity/dashboard-electricity-tile.component.ts

@@ -1,8 +1,12 @@
 import {Component, Input} from '@angular/core';
 import {ValueListComponent} from "../../../shared/value-list/value-list.component";
-import {Display, DisplayValue} from "../../../api/Value/Display";
+import {Display, DisplayValue} from "../../../api/value/Display";
-import {ValueConstant} from "../../../api/Value/ValueConstant";
+import {ValueConstant} from "../../../api/value/ValueConstant";
 import {SeriesCacheService} from "../../../api/series/series-cache.service";
+import {SliceService} from "../../../api/series/consumption/slice/slice.service";
+import {Slice} from "../../../api/series/consumption/slice/Slice";
+import {Interval} from "../../../api/series/consumption/interval/Interval";
+import {ELECTRICITY_GRID_DELIVERED_ENERGY, ELECTRICITY_GRID_PURCHASED_ENERGY, ELECTRICITY_PHOTOVOLTAIC_PRODUCED} from "../../../api/series/constants";
 
 const PURCHASING_MUCH = 200;
 
@@ -22,30 +26,74 @@ export class DashboardElectricityTileComponent {
   @Input()
   now!: Date;
 
+  protected producedToday: Slice = Slice.EMPTY;
+
+  protected purchasedToday: Slice = Slice.EMPTY;
+
+  protected deliveredToday: Slice = Slice.EMPTY;
+
+  protected producedYesterday: Slice = Slice.EMPTY;
+
+  protected purchasedYesterday: Slice = Slice.EMPTY;
+
+  protected deliveredYesterday: Slice = Slice.EMPTY;
+
+  @Input()
+  set slowUpdate(_: Date) {
+    this.sliceService.at(ELECTRICITY_PHOTOVOLTAIC_PRODUCED, Interval.Day, 0, slice => this.producedToday = slice);
+    this.sliceService.at(ELECTRICITY_GRID_PURCHASED_ENERGY, Interval.Day, 0, slice => this.purchasedToday = slice);
+    this.sliceService.at(ELECTRICITY_GRID_DELIVERED_ENERGY, Interval.Day, 0, slice => this.deliveredToday = slice);
+
+    this.sliceService.at(ELECTRICITY_PHOTOVOLTAIC_PRODUCED, Interval.Day, 1, slice => this.producedYesterday = slice);
+    this.sliceService.at(ELECTRICITY_GRID_PURCHASED_ENERGY, Interval.Day, 1, slice => this.purchasedYesterday = slice);
+    this.sliceService.at(ELECTRICITY_GRID_DELIVERED_ENERGY, Interval.Day, 1, slice => this.deliveredYesterday = slice);
+  }
+
   constructor(
-    protected readonly seriesCacheService: SeriesCacheService,
+    private readonly seriesCacheService: SeriesCacheService,
+    private readonly sliceService: SliceService,
   ) {
     // -
   }
 
   getDisplayList(): Display[] {
-    const consumptionPower = this.seriesCacheService.photovoltaicPower.plus(this.seriesCacheService.gridPower).clampNonNegative();
     const producedAfterChange = this.seriesCacheService.photovoltaicProduced.minus(PRODUCED_BEFORE_METER_CHANGE);
     const selfAfterChange = producedAfterChange.minus(this.seriesCacheService.gridDelivered);
     const selfRatio = selfAfterChange.div(producedAfterChange);
     const selfConsumed = selfRatio.mul(this.seriesCacheService.photovoltaicProduced);
 
+    const consumptionPower = this.seriesCacheService.photovoltaicPower.plus(this.seriesCacheService.gridPower).clampNonNegative();
+
     const gridColor = this.getGridPowerColor();
     const productionColor = this.getProductionPowerColor();
+
+    const selfToday = this.producedToday.minus(this.deliveredToday);
+    const consumedToday = this.purchasedToday.plus(selfToday);
+
+    const selfYesterday = this.producedYesterday.minus(this.deliveredYesterday);
+    const consumedYesterday = this.purchasedYesterday.plus(selfYesterday);
     return [
+      'Zählerstände',
       new DisplayValue('Bezogen', this.seriesCacheService.gridPurchased, ''),
       new DisplayValue('Eingespeist', this.seriesCacheService.gridDelivered, ''),
       new DisplayValue('Produziert', this.seriesCacheService.photovoltaicProduced, ''),
       new DisplayValue('Selbst verbraucht', selfConsumed, ''),
-      null,
+      'Leistung',
       new DisplayValue('Produktion', this.seriesCacheService.photovoltaicPower, productionColor),
       new DisplayValue('Netz', this.seriesCacheService.gridPower, gridColor),
       new DisplayValue('Verbrauch', consumptionPower, ''),
+      'Heute',
+      new DisplayValue('Produziert', this.producedToday, ''),
+      new DisplayValue('Eingespeist', this.deliveredToday, ''),
+      new DisplayValue('Selbstverbraucht', selfToday, ''),
+      new DisplayValue('Bezogen', this.purchasedToday, ''),
+      new DisplayValue('Verbraucht', consumedToday, ''),
+      'Gestern',
+      new DisplayValue('Produziert', this.producedYesterday, ''),
+      new DisplayValue('Eingespeist', this.deliveredYesterday, ''),
+      new DisplayValue('Selbstverbraucht', selfYesterday, ''),
+      new DisplayValue('Bezogen', this.purchasedYesterday, ''),
+      new DisplayValue('Verbraucht', consumedYesterday, ''),
     ];
   }
 

src/main/angular/src/app/pages/dashboard/heating/dashboard-heating-tile.component.ts

@@ -1,6 +1,6 @@
 import {Component, Input} from '@angular/core';
 import {ValueListComponent} from "../../../shared/value-list/value-list.component";
-import {Display, DisplayValue} from "../../../api/Value/Display";
+import {Display, DisplayValue} from "../../../api/value/Display";
 import {SeriesCacheService} from "../../../api/series/series-cache.service";
 
 const WARM = 25;

src/main/angular/src/app/shared/value-list/value-list.component.html

@@ -4,17 +4,22 @@
     {{ title }}
   </div>
   <table class="values">
-    <ng-container *ngFor="let display of displayList">
+    <ng-container *ngFor="let item of displayList">
-      <tr class="rate" *ngIf="display" [style.color]="display.color">
+      <tr class="rate" *ngIf="asDisplay(item)" [style.color]="asDisplay(item)?.color">
-        <th>{{ display.title }}</th>
+        <th>{{ asDisplay(item)?.title }}</th>
         <td class="v">
-          {{ display?.value?.value | number:'0.0-0' }}
+          {{ asDisplay(item)?.value?.value | number:'0.1-1' }}
         </td>
         <td class="u">
-          {{ display?.value?.unit }}
+          {{ asDisplay(item)?.value?.unit }}
         </td>
       </tr>
-      <tr *ngIf="display === null">
+      <tr *ngIf="asString(item)">
+        <td colspan="3" class="header">
+          {{ asString(item) }}
+        </td>
+      </tr>
+      <tr *ngIf="item === null">
         <td colspan="3" class="spacer"></td>
       </tr>
     </ng-container>

src/main/angular/src/app/shared/value-list/value-list.component.less

@@ -49,6 +49,13 @@
       border-top: 1px solid #ddd;
     }
 
+    .header {
+      border-top: 1px solid #ddd;
+      text-align: center;
+      font-style: italic;
+      font-size: 80%;
+    }
+
   }
 
 }

src/main/angular/src/app/shared/value-list/value-list.component.ts

@@ -1,6 +1,6 @@
 import {Component, Input} from '@angular/core';
 import {DecimalPipe, NgForOf, NgIf} from "@angular/common";
-import {Display} from "../../api/Value/Display";
+import {Display, DisplayValue} from "../../api/value/Display";
 
 @Component({
   selector: 'app-value-list',
@@ -51,7 +51,23 @@ export class ValueListComponent {
   maxAgeSeconds: number = 10;
 
   private displayUpdate() {
-    this.valid = this.displayList.some(d => !!d && !!d.value && !!d.value.date && (this.now.getTime() - d.value.date.getTime()) <= this.maxAgeSeconds * 1000)
+    this.valid = this.displayList
+      .filter(d => d instanceof DisplayValue)
+      .some(d => !!d && !!d.value && !!d.value.date && (this.now.getTime() - d.value.date.getTime()) <= this.maxAgeSeconds * 1000)
+  }
+
+  asDisplay(item: Display): DisplayValue | null {
+    if (item instanceof DisplayValue) {
+      return item;
+    }
+    return null;
+  }
+
+  asString(item: Display): string | null {
+    if (typeof item === 'string') {
+      return item;
+    }
+    return null;
   }
 
 }

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

@@ -1,6 +1,6 @@
 package de.ph87.data.series;
 
-import de.ph87.data.series.consumption.unit.Unit;
+import de.ph87.data.series.interval.Interval;
 import jakarta.persistence.Column;
 import jakarta.persistence.Embeddable;
 import jakarta.persistence.ManyToOne;
@@ -22,16 +22,16 @@ public class SeriesIntervalKey implements Serializable {
 
   @NonNull
   @Column(nullable = false, updatable = false, columnDefinition = "CHAR(1)")
-  private Unit unit;
+  private Interval interval;
 
   @NonNull
   @Column(nullable = false, updatable = false)
   private ZonedDateTime aligned;
 
-  public SeriesIntervalKey(@NonNull final Series series, @NonNull final Unit unit, @NonNull final ZonedDateTime unaligned) {
+  public SeriesIntervalKey(@NonNull final Series series, @NonNull final Interval interval, @NonNull final ZonedDateTime unaligned) {
     this.series = series;
-    this.unit = unit;
+    this.interval = interval;
-    this.aligned = unit.align(unaligned);
+    this.aligned = interval.align(unaligned);
   }
 
 }

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

@@ -5,29 +5,44 @@ import lombok.NonNull;
 import java.util.function.BiFunction;
 
 public enum SeriesMode {
-  MEASURE((first, second) -> second - first, (last, value) -> value),
+  MEASURE(
-  COUNTER((first, second) -> second - first, Double::sum),
+    (first, second) -> second - first,
-  INCREASING((first, second) -> second - first, (last, value) -> value),
+    (last, value) -> value
-  DECREASING((first, second) -> first - second, (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;
+  private final BiFunction<Double, Double, Double> amount;
 
   @NonNull
-  private final BiFunction<Double, Double, Double> add;
+  private final BiFunction<Double, Double, Double> plus;
 
-  SeriesMode(@NonNull final BiFunction<Double, Double, Double> delta, @NonNull final BiFunction<Double, Double, Double> add) {
+  SeriesMode(
-    this.delta = delta;
+    @NonNull final BiFunction<Double, Double, Double> amount,
-    this.add = add;
+    @NonNull final BiFunction<Double, Double, Double> plus
+  ) {
+    this.amount = amount;
+    this.plus = plus;
   }
 
-  public double getDelta(final double first, final double second) {
+  public double amount(final double first, final double second) {
-    return delta.apply(first, second);
+    return amount.apply(first, second);
   }
 
   public double update(final double series, final double value) {
-    return add.apply(series, value);
+    return plus.apply(series, value);
   }
 
 }

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

@@ -4,8 +4,10 @@ import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.server.ResponseStatusException;
 
 import java.time.ZonedDateTime;
 import java.util.List;
@@ -37,4 +39,9 @@ public class SeriesService {
     return seriesRepository.findAll().stream().map(SeriesDto::new).toList();
   }
 
+  @NonNull
+  public Series getByName(@NonNull final String name) {
+    return seriesRepository.findByNameOrAliasesContains(name, name).orElseThrow(() -> new ResponseStatusException(HttpStatus.BAD_REQUEST));
+  }
+
 }

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

@@ -1,14 +1,14 @@
 package de.ph87.data.series.consumption;
 
 import de.ph87.data.series.consumption.period.Period;
-import de.ph87.data.series.consumption.unit.Unit;
+import de.ph87.data.series.interval.Interval;
 import jakarta.persistence.*;
 import lombok.*;
 
 import java.io.Serializable;
 import java.time.ZonedDateTime;
 
-import static de.ph87.data.series.consumption.slice.SliceService.DL;
+import static de.ph87.data.series.interval.IntervalHelper.DL;
 
 @Entity
 @Getter
@@ -32,15 +32,13 @@ public class Consumption {
   }
 
   @ToString.Include
-  @SuppressWarnings("unused") // toString
+  public Interval interval() {
-  public Unit unit() {
+    return id.interval;
-    return id.unit;
   }
 
   @ToString.Include
-  @SuppressWarnings("unused") // toString
   public String aligned() {
-    return DL(id.unit, id.aligned);
+    return DL(id.interval, id.aligned);
   }
 
   @NonNull
@@ -59,8 +57,8 @@ public class Consumption {
   @Column(nullable = false)
   private double lastValue;
 
-  public Consumption(@NonNull final Period period, @NonNull final Unit unit, @NonNull final ZonedDateTime aligned, @NonNull final ZonedDateTime date, final double value) {
+  public Consumption(@NonNull final Period period, @NonNull final Interval interval, @NonNull final ZonedDateTime aligned, @NonNull final ZonedDateTime date, final double value) {
-    this.id = new Id(period, unit, aligned);
+    this.id = new Id(period, interval, aligned);
     this.firstDate = date;
     this.firstValue = value;
     this.lastDate = date;
@@ -81,7 +79,7 @@ public class Consumption {
 
     @NonNull
     @Column(nullable = false, updatable = false, columnDefinition = "CHAR(1)")
-    private Unit unit;
+    private Interval interval;
 
     @NonNull
     @Column(nullable = false, updatable = false)

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

@@ -1,80 +0,0 @@
-package de.ph87.data.series.consumption;
-
-import de.ph87.data.common.DateTimeHelpers;
-import de.ph87.data.series.consumption.slice.Slice;
-import de.ph87.data.series.consumption.slice.SliceService;
-import de.ph87.data.series.consumption.unit.Unit;
-import lombok.NonNull;
-import lombok.RequiredArgsConstructor;
-import lombok.extern.slf4j.Slf4j;
-import org.springframework.http.HttpStatus;
-import org.springframework.web.bind.annotation.*;
-import org.springframework.web.server.ResponseStatusException;
-
-import java.time.ZonedDateTime;
-import java.util.ArrayList;
-import java.util.List;
-
-@Slf4j
-@CrossOrigin
-@RestController
-@RequiredArgsConstructor
-@RequestMapping("Consumption")
-public class ConsumptionController {
-
-  private static final int MAX_COUNT = 1500;
-
-  private final SliceService sliceService;
-
-  @NonNull
-  @GetMapping("{seriesId}/{unitName}/last/{count}")
-  public List<List<Number>> latest(@PathVariable final long seriesId, @PathVariable final String unitName, @PathVariable final int count) {
-    return offset(seriesId, unitName, count, 0);
-  }
-
-  @NonNull
-  @GetMapping("{seriesId}/{unitName}/last/{count}/{offset}")
-  public List<List<Number>> offset(@PathVariable final long seriesId, @PathVariable final String unitName, @PathVariable final int count, @PathVariable final int offset) {
-    if (count <= 0) {
-      log.error("'count' must at least be 1");
-      throw new ResponseStatusException(HttpStatus.BAD_REQUEST);
-    }
-    if (count > MAX_COUNT) {
-      log.error("'count' must at most be {}", MAX_COUNT);
-      throw new ResponseStatusException(HttpStatus.BAD_REQUEST);
-    }
-    final Unit unit = Unit.valueOf(unitName);
-    final ZonedDateTime end = unit.plus(unit.align(ZonedDateTime.now()), -offset);
-    final ZonedDateTime begin = unit.plus(end, -(count - 1));
-    return between(seriesId, unit, begin, end);
-  }
-
-  @NonNull
-  @GetMapping("{seriesId}/{unitName}/between/{beginEpochSeconds}/{endEpochSeconds}")
-  public List<List<Number>> between(@PathVariable final long seriesId, @PathVariable final String unitName, @PathVariable final long beginEpochSeconds, @PathVariable final long endEpochSeconds) {
-    return between(seriesId, Unit.valueOf(unitName), DateTimeHelpers.ZDT(beginEpochSeconds), DateTimeHelpers.ZDT(endEpochSeconds));
-  }
-
-  @NonNull
-  private List<List<Number>> between(final long seriesId, @NonNull final Unit unit, @NonNull final ZonedDateTime begin, @NonNull final ZonedDateTime end) {
-    final long estimatedCount = unit.estimateCount(begin, end);
-    log.debug("estimatedCount: {}", estimatedCount);
-    if (estimatedCount > MAX_COUNT) {
-      log.error("'estimatedCount' must at most be {} but is {}", MAX_COUNT, estimatedCount);
-      throw new ResponseStatusException(HttpStatus.BAD_REQUEST);
-    }
-    return sliceService.slice(seriesId, unit, begin, end)
-      .stream()
-      .map(this::map)
-      .toList();
-  }
-
-  @NonNull
-  private List<Number> map(@NonNull final Slice slice) {
-    final ArrayList<Number> numbers = new ArrayList<>();
-    numbers.add(slice.begin.toEpochSecond());
-    numbers.add(Double.isNaN(slice.getDelta()) ? null : slice.getDelta());
-    return numbers;
-  }
-
-}

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

@@ -1,22 +1,21 @@
 package de.ph87.data.series.consumption;
 
 import de.ph87.data.series.consumption.period.Period;
-import de.ph87.data.series.consumption.unit.Unit;
+import de.ph87.data.series.interval.Interval;
 import lombok.NonNull;
 import org.springframework.data.repository.CrudRepository;
 
 import java.time.ZonedDateTime;
-import java.util.List;
 import java.util.Optional;
 
 public interface ConsumptionRepository extends CrudRepository<Consumption, Consumption.Id> {
 
-  Optional<Consumption> findByIdPeriodAndIdUnitAndIdAligned(@NonNull Period period, @NonNull Unit unit, @NonNull ZonedDateTime aligned);
+  Optional<Consumption> findByIdPeriodAndIdIntervalAndIdAligned(@NonNull Period period, @NonNull Interval interval, @NonNull ZonedDateTime aligned);
 
-  Optional<Consumption> findFirstByIdPeriodAndIdUnitAndIdAlignedLessThanOrderByIdAlignedDesc(@NonNull Period period, @NonNull Unit unit, @NonNull ZonedDateTime begin);
+  Optional<Consumption> findFirstByIdPeriodAndIdIntervalAndIdAlignedLessThanOrderByIdAlignedDesc(@NonNull Period period, @NonNull Interval interval, @NonNull ZonedDateTime begin);
 
-  Optional<Consumption> findFirstByIdPeriodAndIdUnitAndIdAlignedGreaterThanOrderByIdAlignedAsc(@NonNull Period period, @NonNull Unit unit, @NonNull ZonedDateTime begin);
+  Optional<Consumption> findFirstByIdPeriodAndIdIntervalAndIdAlignedGreaterThanOrderByIdAlignedAsc(@NonNull Period period, @NonNull Interval interval, @NonNull ZonedDateTime begin);
 
-  List<Consumption> findAllByIdPeriodAndIdUnitAndIdAlignedGreaterThanEqualAndIdAlignedLessThanEqualOrderByIdAlignedAsc(@NonNull Period period, @NonNull Unit unit, @NonNull ZonedDateTime begin, @NonNull ZonedDateTime end);
+  Optional<Consumption> findFirstByIdPeriodAndIdIntervalAndIdAligned(@NonNull Period period, @NonNull Interval interval, @NonNull ZonedDateTime date);
 
 }

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

@@ -5,7 +5,7 @@ import de.ph87.data.series.SeriesMode;
 import de.ph87.data.series.SeriesService;
 import de.ph87.data.series.consumption.period.Period;
 import de.ph87.data.series.consumption.period.PeriodService;
-import de.ph87.data.series.consumption.unit.Unit;
+import de.ph87.data.series.interval.Interval;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -37,16 +37,16 @@ public class ConsumptionService {
     period.setLastDate(event.getDate());
     period.setLastValue(series.getMode().update(period.getLastValue(), event.getValue()));
 
-    for (final Unit unit : Unit.values()) {
+    for (final Interval interval : Interval.values()) {
-      final ZonedDateTime aligned = unit.align(event.getDate());
+      final ZonedDateTime aligned = interval.align(event.getDate());
-      final Optional<Consumption> existingOptional = consumptionRepository.findByIdPeriodAndIdUnitAndIdAligned(period, unit, aligned);
+      final Optional<Consumption> existingOptional = consumptionRepository.findByIdPeriodAndIdIntervalAndIdAligned(period, interval, aligned);
       if (existingOptional.isPresent()) {
         final Consumption existing = existingOptional.get();
         existing.setLastDate(event.getDate());
         existing.setLastValue(event.getValue());
         log.debug("Existing Consumption updated: {}", existing);
       } else {
-        final Consumption created = consumptionRepository.save(new Consumption(period, unit, aligned, event.getDate(), event.getValue()));
+        final Consumption created = consumptionRepository.save(new Consumption(period, interval, aligned, event.getDate(), event.getValue()));
         log.debug("New Consumption created: created={}", created);
       }
     }

src/main/java/de/ph87/data/series/consumption/period/PeriodRepository.java

@@ -1,5 +1,6 @@
 package de.ph87.data.series.consumption.period;
 
+import de.ph87.data.series.Series;
 import lombok.NonNull;
 import org.springframework.data.repository.CrudRepository;
 
@@ -8,6 +9,6 @@ import java.util.List;
 
 public interface PeriodRepository extends CrudRepository<Period, Long> {
 
-  List<Period> findAllBySeriesIdAndLastDateGreaterThanAndFirstDateLessThan(long seriesId, @NonNull ZonedDateTime wantedEnd, @NonNull ZonedDateTime wantedBegin);
+  List<Period> findAllBySeriesAndLastDateGreaterThanAndFirstDateLessThan(@NonNull Series series, @NonNull ZonedDateTime wantedEnd, @NonNull ZonedDateTime wantedBegin);
 
 }

src/main/java/de/ph87/data/series/consumption/slice/Slice.java

@@ -1,71 +0,0 @@
-package de.ph87.data.series.consumption.slice;
-
-import de.ph87.data.series.consumption.Consumption;
-import de.ph87.data.series.consumption.unit.Unit;
-import lombok.Getter;
-import lombok.NonNull;
-import lombok.Setter;
-import lombok.ToString;
-
-import java.time.Duration;
-import java.time.ZonedDateTime;
-
-@Getter
-@ToString
-public class Slice {
-
-  @NonNull
-  public final ZonedDateTime begin;
-
-  @NonNull
-  public final ZonedDateTime end;
-
-  @Setter
-  private double delta;
-
-  public Slice(@NonNull final Consumption consumption) {
-    this(consumption.getFirstDate(), consumption.getLastDate(), consumption.getId().getPeriod().getSeries().getMode().getDelta(consumption.getFirstValue(), consumption.getLastValue()));
-  }
-
-  public Slice(@NonNull final Consumption first, @NonNull final Consumption second) {
-    this(first.getLastDate(), second.getFirstDate(), first.getId().getPeriod().getSeries().getMode().getDelta(first.getLastValue(), second.getFirstValue()));
-  }
-
-  private Slice(@NonNull final ZonedDateTime begin, @NonNull final ZonedDateTime end, final double delta) {
-    this.begin = begin;
-    this.end = end;
-    this.delta = delta;
-  }
-
-  public Slice(@NonNull final ZonedDateTime begin, @NonNull final Unit unit) {
-    this.begin = begin;
-    this.end = unit.plus(begin, 1);
-    this.delta = Double.NaN;
-  }
-
-  public double getDeltaPerMilli() {
-    return delta / Duration.between(begin, end).toMillis();
-  }
-
-  public void merge(@NonNull final Slice other) {
-    if (!this.begin.equals(other.begin)) {
-      throw new RuntimeException();
-    }
-    if (!this.end.equals(other.end)) {
-      throw new RuntimeException();
-    }
-    add(other.delta);
-  }
-
-  public void add(final double addDelta) {
-    if (Double.isNaN(addDelta)) {
-      return;
-    }
-    if (Double.isNaN(this.delta)) {
-      this.delta = addDelta;
-    } else {
-      this.delta += addDelta;
-    }
-  }
-
-}

src/main/java/de/ph87/data/series/consumption/slice/SliceAligned.java

@@ -0,0 +1,34 @@
+package de.ph87.data.series.consumption.slice;
+
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.ToString;
+
+import java.time.ZonedDateTime;
+
+@Getter
+@ToString
+public class SliceAligned {
+
+  @NonNull
+  private final ZonedDateTime date;
+
+  public final double amount;
+
+  public SliceAligned(@NonNull final SliceAligned a, @NonNull final SliceAligned b) {
+    if (a.date.toEpochSecond() != b.date.toEpochSecond()) {
+      throw new RuntimeException();
+    }
+    this.date = a.date;
+    this.amount = a.amount + b.amount;
+  }
+
+  public SliceAligned(@NonNull final ZonedDateTime date, final double amount) {
+    if (amount < 0) {
+      throw new RuntimeException();
+    }
+    this.date = date;
+    this.amount = amount;
+  }
+
+}

src/main/java/de/ph87/data/series/consumption/slice/SliceController.java

@@ -0,0 +1,29 @@
+package de.ph87.data.series.consumption.slice;
+
+import de.ph87.data.series.interval.Interval;
+import jakarta.annotation.Nullable;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.*;
+
+import java.time.ZonedDateTime;
+
+@Slf4j
+@CrossOrigin
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("Slice")
+public class SliceController {
+
+  private final SliceService sliceService;
+
+  @Nullable
+  @GetMapping("seriesName/{seriesName}/interval/{intervalName}/offset/{offset}")
+  public SliceDto offset(@NonNull @PathVariable final String seriesName, @NonNull @PathVariable final String intervalName, @PathVariable final int offset) {
+    final Interval interval = Interval.valueOf(intervalName);
+    final ZonedDateTime date = interval.plus(interval.align(ZonedDateTime.now()), -offset);
+    return sliceService.at(seriesName, interval, date);
+  }
+
+}

src/main/java/de/ph87/data/series/consumption/slice/SliceDto.java

@@ -0,0 +1,25 @@
+package de.ph87.data.series.consumption.slice;
+
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.ToString;
+
+import java.time.ZonedDateTime;
+
+@Getter
+@ToString
+public class SliceDto {
+
+  public final ZonedDateTime date;
+
+  public final double amount;
+
+  public final String unit;
+
+  public SliceDto(@NonNull final SliceAligned slice, final @NonNull String unit) {
+    this.date = slice.getDate();
+    this.amount = slice.getAmount();
+    this.unit = unit;
+  }
+
+}

src/main/java/de/ph87/data/series/consumption/slice/SliceService.java

@@ -1,10 +1,13 @@
 package de.ph87.data.series.consumption.slice;
 
+import de.ph87.data.series.Series;
+import de.ph87.data.series.SeriesMode;
+import de.ph87.data.series.SeriesService;
 import de.ph87.data.series.consumption.Consumption;
 import de.ph87.data.series.consumption.ConsumptionRepository;
 import de.ph87.data.series.consumption.period.Period;
 import de.ph87.data.series.consumption.period.PeriodRepository;
-import de.ph87.data.series.consumption.unit.Unit;
+import de.ph87.data.series.interval.Interval;
 import jakarta.annotation.Nullable;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
@@ -14,11 +17,8 @@ import org.springframework.transaction.annotation.Transactional;
 
 import java.time.Duration;
 import java.time.ZonedDateTime;
-import java.time.format.DateTimeFormatter;
-import java.util.ArrayList;
-import java.util.Collections;
 import java.util.List;
-import java.util.Optional;
+import java.util.Objects;
 
 @Slf4j
 @Service
@@ -26,166 +26,67 @@ import java.util.Optional;
 @RequiredArgsConstructor
 public class SliceService {
 
-  private final ConsumptionRepository consumptionRepository;
-
   private final PeriodRepository periodRepository;
 
-  @NonNull
+  private final ConsumptionRepository consumptionRepository;
-  public List<Slice> slice(final long seriesId, @NonNull final Unit unit, @NonNull final ZonedDateTime begin, @NonNull final ZonedDateTime end) {
-    log.debug("slice:");
-    log.debug("  seriesId:      {}", seriesId);
-    log.debug("  unit:          {}", unit);
 
-    final ZonedDateTime wantedFirst = unit.align(begin);
+  private final SeriesService seriesService;
-    final ZonedDateTime wantedLast = unit.align(end);
-    log.debug("  wantedFirst:   {}", DL(unit, wantedFirst));
-    log.debug("  wantedLast:    {}", DL(unit, wantedLast));
 
-    final List<Period> periods = periodRepository.findAllBySeriesIdAndLastDateGreaterThanAndFirstDateLessThan(seriesId, wantedFirst, unit.plus(wantedLast, 1));
+  @Nullable
-    log.debug("  periods:       {}", periods.size());
+  public SliceDto at(@NonNull final String seriesName, @NonNull final Interval interval, @NonNull final ZonedDateTime date) {
-
+    final ZonedDateTime sliceBegin = interval.align(date);
-    final List<Slice> totalSlices = new ArrayList<>();
+    final Series series = seriesService.getByName(seriesName);
-    for (final Period period : periods) {
+    final List<Period> periods = periodRepository.findAllBySeriesAndLastDateGreaterThanAndFirstDateLessThan(series, sliceBegin, sliceBegin);
-      log.debug("    {}", period);
+    return periods.stream()
-      log.debug("      firstDate:    {}", DL(unit, period.getFirstDate()));
+      .map(period -> at(period, interval, sliceBegin))
-      log.debug("      lastDate:     {}", DL(unit, period.getLastDate()));
+      .filter(Objects::nonNull)
-
+      .reduce(SliceAligned::new)
-      final List<Slice> periodSlices = reslicePeriod(unit, period, wantedFirst, wantedLast);
+      .map(slice -> new SliceDto(slice, series.getUnit()))
-      print("periodSlices", periodSlices, 3);
+      .orElse(null);
-      periodSlices.forEach(merge -> merge(totalSlices, merge));
-
-      print("totalSlices", totalSlices, 3);
-    }
-    return totalSlices;
-  }
-
-  private static void merge(@NonNull final List<Slice> resultList, @NonNull final Slice merge) {
-    for (int resultIndex = 0; resultIndex < resultList.size(); resultIndex++) {
-      final Slice result = resultList.get(resultIndex);
-      final long compare = result.begin.toEpochSecond() - merge.begin.toEpochSecond();
-      if (compare == 0) {
-        result.merge(merge);
-        return;
-      }
-      if (compare > 0) {
-        resultList.add(resultIndex, merge);
-        return;
-      }
-    }
-    resultList.add(merge);
-  }
-
-  @NonNull
-  private List<Slice> reslicePeriod(@NonNull final Unit unit, @NonNull final Period period, @NonNull final ZonedDateTime firstBegin, @NonNull final ZonedDateTime lastBegin) {
-    final ZonedDateTime lastEnd = unit.plus(lastBegin, 1);
-
-    final List<Slice> sourceList = slicePeriod(period, unit, firstBegin, lastBegin);
-    final List<Slice> resultList = new ArrayList<>();
-
-    ZonedDateTime date = firstBegin;
-    Slice result = firstResult(firstBegin, unit, resultList);
-    Slice source = nextSourceIfNeeded(date, null, sourceList);
-    while (date.isBefore(lastEnd)) {
-      source = nextSourceIfNeeded(date, source, sourceList);
-      result = nextResultIfNeeded(date, result, resultList, unit, lastEnd);
-      if (source == null) {
-        date = result.end;
-      } else {
-        final ZonedDateTime earliestEnd = source.end.isBefore(result.end) ? source.end : result.end;
-        if (hasOverlap(source, earliestEnd, date)) {
-          final ZonedDateTime latestBegin = source.begin.isAfter(date) ? source.begin : date;
-          final long millis = Duration.between(latestBegin, earliestEnd).toMillis();
-          result.add(millis * source.getDeltaPerMilli());
-        }
-        date = earliestEnd;
-      }
-    }
-    return resultList;
-  }
-
-  private static boolean hasOverlap(@NonNull final Slice source, @NonNull final ZonedDateTime earliestEnd, @NonNull final ZonedDateTime date) {
-    return source.begin.isBefore(earliestEnd) && source.end.isAfter(date);
-  }
-
-  @NonNull
-  private static Slice firstResult(@NonNull final ZonedDateTime begin, @NonNull final Unit unit, @NonNull final List<Slice> resultList) {
-    final Slice newWanted = new Slice(begin, unit);
-    resultList.add(newWanted);
-    return newWanted;
   }
 
   @Nullable
-  private static Slice nextSourceIfNeeded(@NonNull final ZonedDateTime date, @Nullable final Slice source, @NonNull final List<Slice> sourceList) {
+  private SliceAligned at(@NonNull final Period period, @NonNull final Interval interval, @NonNull final ZonedDateTime sliceBegin) {
-    if (source == null || !date.isBefore(source.end)) {
+    final SeriesMode mode = period.getSeries().getMode();
-      return sourceList.isEmpty() ? null : sourceList.remove(0);
-    }
-    return source;
-  }
 
-  @NonNull
+    final ZonedDateTime sliceEnd = interval.plus(sliceBegin, 1);
-  private static Slice nextResultIfNeeded(@NonNull final ZonedDateTime date, @NonNull final Slice result, @NonNull final List<Slice> resultList, @NonNull final Unit unit, @NonNull final ZonedDateTime lastEnd) {
-    if (date.isBefore(lastEnd) && !date.isBefore(result.end)) {
-      final Slice slice = new Slice(result.end, unit);
-      resultList.add(slice);
-      return slice;
-    }
-    return result;
-  }
 
-  @NonNull
+    final Consumption before = consumptionRepository.findFirstByIdPeriodAndIdIntervalAndIdAlignedLessThanOrderByIdAlignedDesc(period, interval, sliceBegin).orElse(null);
-  private List<Slice> slicePeriod(@NonNull final Period period, @NonNull final Unit unit, @NonNull final ZonedDateTime wantedFirst, @NonNull final ZonedDateTime wantedLast) {
+    final Consumption wanted = consumptionRepository.findFirstByIdPeriodAndIdIntervalAndIdAligned(period, interval, sliceBegin).orElse(null);
-    final Optional<Consumption> firstOptional = consumptionRepository.findFirstByIdPeriodAndIdUnitAndIdAlignedLessThanOrderByIdAlignedDesc(period, unit, wantedFirst)
+    final Consumption after = consumptionRepository.findFirstByIdPeriodAndIdIntervalAndIdAlignedGreaterThanOrderByIdAlignedAsc(period, interval, sliceBegin).orElse(null);
-      .or(() -> consumptionRepository.findFirstByIdPeriodAndIdUnitAndIdAlignedGreaterThanOrderByIdAlignedAsc(period, unit, wantedFirst));
-    if (firstOptional.isEmpty()) {
-      log.error("    No first Consumption for Period: {}", period);
-      return Collections.emptyList();
-    }
 
-    final Optional<Consumption> lastOptional = consumptionRepository.findFirstByIdPeriodAndIdUnitAndIdAlignedGreaterThanOrderByIdAlignedAsc(period, unit, wantedLast)
+    final double sliceAmount;
-      .or(() -> consumptionRepository.findFirstByIdPeriodAndIdUnitAndIdAlignedLessThanOrderByIdAlignedDesc(period, unit, wantedLast));
+    if (wanted == null) {
-    if (lastOptional.isEmpty()) {
+      if (before == null || after == null) {
-      log.error("    No last Consumption for Period: {}", period);
+        return null;
-      return Collections.emptyList();
-    }
-
-    final Consumption firstToFetch = firstOptional.get();
-    final Consumption lastToFetch = lastOptional.get();
-    final List<Consumption> consumptions = consumptionRepository.findAllByIdPeriodAndIdUnitAndIdAlignedGreaterThanEqualAndIdAlignedLessThanEqualOrderByIdAlignedAsc(period, unit, firstToFetch.getId().getAligned(), lastToFetch.getId().getAligned());
-
-    print("consumptions", consumptions, 3);
-    Consumption last = null;
-    final List<Slice> slices = new ArrayList<>();
-    for (final Consumption consumption : consumptions) {
-      if (last != null) {
-        slices.add(new Slice(last, consumption));
       }
-      if (!consumption.getFirstDate().equals(consumption.getLastDate())) {
+      final long totalMillis = Duration.between(before.getLastDate(), after.getFirstDate()).toMillis();
-        slices.add(new Slice(consumption));
+      final double totalAmount = mode.amount(before.getLastValue(), after.getFirstValue());
+      final long sliceMillis = Duration.between(sliceBegin, sliceEnd).toMillis();
+      sliceAmount = sliceMillis * totalAmount / totalMillis;
+    } else {
+      final double firstValue;
+      if (before != null) {
+        final long totalMillis = Duration.between(before.getLastDate(), wanted.getFirstDate()).toMillis();
+        final double totalDelta = wanted.getFirstValue() - before.getLastValue();
+        final long beforeMillis = Duration.between(before.getLastDate(), sliceBegin).toMillis();
+        firstValue = before.getLastValue() + beforeMillis * totalDelta / totalMillis;
+      } else {
+        firstValue = wanted.getFirstValue();
       }
-      last = consumption;
+
+      final double lastValue;
+      if (after != null) {
+        final long totalMillis = Duration.between(wanted.getLastDate(), after.getFirstDate()).toMillis();
+        final double totalDelta = after.getFirstValue() - wanted.getLastValue();
+        final long afterMillis = Duration.between(sliceEnd, after.getFirstDate()).toMillis();
+        lastValue = after.getFirstValue() - afterMillis * totalDelta / totalMillis;
+      } else {
+        lastValue = wanted.getLastValue();
+      }
+      sliceAmount = mode.amount(firstValue, lastValue);
     }
-
+    return new SliceAligned(sliceBegin, sliceAmount);
-    print("sourceSlices", slices, 3);
-    return slices;
-  }
-
-  @NonNull
-  @SuppressWarnings("SuspiciousDateFormat")
-  public static String DL(@NonNull final Unit unit, @NonNull final ZonedDateTime date) {
-    return switch (unit) {
-      case Quarterhour, Hour -> date.toLocalDateTime().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"));
-      case Day -> date.toLocalDate().format(DateTimeFormatter.ofPattern("yyyy-MM-dd"));
-      case Week -> date.toLocalDate().format(DateTimeFormatter.ofPattern("YYYY-'KW'w"));
-      case Month -> date.toLocalDate().format(DateTimeFormatter.ofPattern("yyyy-LLLL"));
-      case Year -> date.toLocalDate().format(DateTimeFormatter.ofPattern("yyyy"));
-    };
-  }
-
-  @SuppressWarnings("SameParameterValue")
-  private static void print(@NonNull final String name, @NonNull final List<?> list, final int indent) {
-    final String indentStr = " ".repeat(indent * 2);
-    log.debug("{}{}: {}", indentStr, name, list.size());
-    list.forEach(item -> log.debug("{}{}", indentStr + "  ", item.toString()));
   }
 
 }

src/main/java/de/ph87/data/series/consumption/unit/UnitJpaConverter.java

@@ -1,27 +0,0 @@
-package de.ph87.data.series.consumption.unit;
-
-import jakarta.persistence.AttributeConverter;
-import jakarta.persistence.Converter;
-
-import java.util.Arrays;
-
-@Converter(autoApply = true)
-public class UnitJpaConverter implements AttributeConverter<Unit, String> {
-
-  @Override
-  public String convertToDatabaseColumn(final Unit unit) {
-    if (unit == null) {
-      return null;
-    }
-    return unit.code;
-  }
-
-  @Override
-  public Unit convertToEntityAttribute(final String code) {
-    if (code == null) {
-      return null;
-    }
-    return Arrays.stream(Unit.values()).filter(u -> u.code.equals(code)).findFirst().orElse(null);
-  }
-
-}

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

@@ -4,7 +4,7 @@ import de.ph87.data.series.Series;
 import de.ph87.data.series.SeriesIntervalKey;
 import de.ph87.data.series.SeriesMode;
 import de.ph87.data.series.SeriesService;
-import de.ph87.data.series.consumption.unit.Unit;
+import de.ph87.data.series.interval.Interval;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -27,8 +27,8 @@ public class CounterService {
     log.debug("Handling CounterEvent: {}", event);
 
     final Series series = seriesService.getOrCreateByName(event.getName(), SeriesMode.COUNTER, event.getDate(), event.getCount(), event.getUnit());
-    for (final Unit unit : Unit.values()) {
+    for (final Interval interval : Interval.values()) {
-      final SeriesIntervalKey id = new SeriesIntervalKey(series, unit, event.getDate());
+      final SeriesIntervalKey id = new SeriesIntervalKey(series, interval, event.getDate());
       counterRepository.findById(id)
         .stream()
         .peek(existing -> existing.setCount(existing.getCount() + event.getCount()))

src/main/java/de/ph87/data/series/interval/Interval.java

@@ -1,4 +1,4 @@
-package de.ph87.data.series.consumption.unit;
+package de.ph87.data.series.interval;
 
 import lombok.NonNull;
 
@@ -9,7 +9,7 @@ import java.time.temporal.ChronoUnit;
 import java.util.function.BiFunction;
 import java.util.function.Function;
 
-public enum Unit {
+public enum Interval {
   Quarterhour("q", t -> t.truncatedTo(ChronoUnit.MINUTES).minusMinutes(t.getMinute() % 15), (t, count) -> t.plusMinutes(15 * count), (a, b) -> Duration.between(a, b).toMinutes() / 15),
   Hour("h", t -> t.truncatedTo(ChronoUnit.HOURS), ZonedDateTime::plusHours, (a, b) -> Duration.between(a, b).toHours()),
   Day("d", t -> t.truncatedTo(ChronoUnit.DAYS), ZonedDateTime::plusDays, (a, b) -> Duration.between(a, b).toDays()),
@@ -30,7 +30,7 @@ public enum Unit {
   @NonNull
   private final BiFunction<ZonedDateTime, ZonedDateTime, Long> estimateCount;
 
-  Unit(@NonNull final String code, @NonNull final Function<ZonedDateTime, ZonedDateTime> align, @NonNull final BiFunction<ZonedDateTime, Long, ZonedDateTime> offset, @NonNull final BiFunction<ZonedDateTime, ZonedDateTime, Long> estimateCount) {
+  Interval(@NonNull final String code, @NonNull final Function<ZonedDateTime, ZonedDateTime> align, @NonNull final BiFunction<ZonedDateTime, Long, ZonedDateTime> offset, @NonNull final BiFunction<ZonedDateTime, ZonedDateTime, Long> estimateCount) {
     this.code = code;
     this.align = align;
     this.offset = offset;

src/main/java/de/ph87/data/series/interval/IntervalHelper.java

@@ -0,0 +1,22 @@
+package de.ph87.data.series.interval;
+
+import lombok.NonNull;
+
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+
+public class IntervalHelper {
+
+  @NonNull
+  @SuppressWarnings("SuspiciousDateFormat")
+  public static String DL(@NonNull final Interval interval, @NonNull final ZonedDateTime date) {
+    return switch (interval) {
+      case Quarterhour, Hour -> date.toLocalDateTime().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"));
+      case Day -> date.toLocalDate().format(DateTimeFormatter.ofPattern("yyyy-MM-dd"));
+      case Week -> date.toLocalDate().format(DateTimeFormatter.ofPattern("YYYY-'KW'w"));
+      case Month -> date.toLocalDate().format(DateTimeFormatter.ofPattern("yyyy-LLLL"));
+      case Year -> date.toLocalDate().format(DateTimeFormatter.ofPattern("yyyy"));
+    };
+  }
+
+}

src/main/java/de/ph87/data/series/interval/IntervalJpaConverter.java

@@ -0,0 +1,27 @@
+package de.ph87.data.series.interval;
+
+import jakarta.persistence.AttributeConverter;
+import jakarta.persistence.Converter;
+
+import java.util.Arrays;
+
+@Converter(autoApply = true)
+public class IntervalJpaConverter implements AttributeConverter<Interval, String> {
+
+  @Override
+  public String convertToDatabaseColumn(final Interval interval) {
+    if (interval == null) {
+      return null;
+    }
+    return interval.code;
+  }
+
+  @Override
+  public Interval convertToEntityAttribute(final String code) {
+    if (code == null) {
+      return null;
+    }
+    return Arrays.stream(Interval.values()).filter(u -> u.code.equals(code)).findFirst().orElse(null);
+  }
+
+}

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

@@ -4,7 +4,7 @@ import de.ph87.data.series.Series;
 import de.ph87.data.series.SeriesIntervalKey;
 import de.ph87.data.series.SeriesMode;
 import de.ph87.data.series.SeriesService;
-import de.ph87.data.series.consumption.unit.Unit;
+import de.ph87.data.series.interval.Interval;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -27,8 +27,8 @@ public class MeasureService {
     log.debug("Handling MeasureEvent: {}", event);
 
     final Series series = seriesService.getOrCreateByName(event.getName(), SeriesMode.MEASURE, event.getDate(), event.getValue(), event.getUnit());
-    for (final Unit unit : Unit.values()) {
+    for (final Interval interval : Interval.values()) {
-      final SeriesIntervalKey id = new SeriesIntervalKey(series, unit, event.getDate());
+      final SeriesIntervalKey id = new SeriesIntervalKey(series, interval, event.getDate());
       measureRepository.findById(id)
         .stream()
         .peek(existing -> existing.update(event))