Add a container for a thermal grid

src/main/java/edu/ie3/datamodel/models/input/container/ThermalGrid.java

@@ -0,0 +1,74 @@
+/*
+ * © 2022. TU Dortmund University,
+ * Institute of Energy Systems, Energy Efficiency and Energy Economics,
+ * Research group Distribution grid planning and operation
+*/
+package edu.ie3.datamodel.models.input.container;
+
+import edu.ie3.datamodel.models.input.thermal.ThermalBusInput;
+import edu.ie3.datamodel.models.input.thermal.ThermalHouseInput;
+import edu.ie3.datamodel.models.input.thermal.ThermalInput;
+import edu.ie3.datamodel.models.input.thermal.ThermalStorageInput;
+import java.util.*;
+
+/**
+ * Container object to denote a fully connected thermal "grid". As there are currently no branch
+ * elements, a grid always only consists of one {@link ThermalBusInput} and all its connected {@link
+ * edu.ie3.datamodel.models.input.thermal.ThermalUnitInput}s
+ */
+public class ThermalGrid implements InputContainer<ThermalInput> {
+  private final ThermalBusInput bus;
+  private final Set<ThermalHouseInput> houses;
+  private final Set<ThermalStorageInput> storages;
+
+  public ThermalGrid(
+      ThermalBusInput bus,
+      Collection<ThermalHouseInput> houses,
+      Collection<ThermalStorageInput> storages) {
+    this.bus = bus;
+    this.houses = new HashSet<>(houses);
+    this.storages = new HashSet<>(storages);
+  }
+
+  public ThermalBusInput getBus() {
+    return bus;
+  }
+
+  public Set<ThermalHouseInput> getHouses() {
+    return houses;
+  }
+
+  public Set<ThermalStorageInput> getStorages() {
+    return storages;
+  }
+
+  @Override
+  public List<ThermalInput> allEntitiesAsList() {
+    return null;
+  }
+
+  @Override
+  public String toString() {
+    return "ThermalGrid{"
+        + "bus="
+        + bus
+        + ", #houses="
+        + houses.size()
+        + ", #storages="
+        + storages.size()
+        + '}';
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+    ThermalGrid that = (ThermalGrid) o;
+    return bus.equals(that.bus) && houses.equals(that.houses) && storages.equals(that.storages);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(bus, houses, storages);
+  }
+}