Package org.openhab.core.library.types

Class QuantityTypeArithmeticGroupFunction.Sum

java.lang.Object
org.openhab.core.library.types.QuantityTypeArithmeticGroupFunction.DimensionalGroupFunction
org.openhab.core.library.types.QuantityTypeArithmeticGroupFunction.Sum
All Implemented Interfaces:
GroupFunction
Enclosing interface:
QuantityTypeArithmeticGroupFunction
public static class QuantityTypeArithmeticGroupFunction.Sum extends QuantityTypeArithmeticGroupFunction.DimensionalGroupFunction
Calculates the sum of a set of item states whose value could be converted to the 'referenceUnit'. Uses the QuantityType.add(org.openhab.core.library.types.QuantityType<T>) method so the result is an incremental sum based on the 'referenceUnit'. As a general rule this class is instantiated with a 'referenceUnit' that is a "system unit" (which are zero based) so such incremental sum is in fact also an absolute sum. However the class COULD be instantiated with a "non- system unit" (e.g. °C, °F) in which case the result would be an incremental sum based on that unit.

  • Constructor Details

    • Sum

      public Sum(javax.measure.Unit<?> baseItemUnit)

  • Method Details

    • calculate

      public State calculate(@Nullable Set<Item> items)
      Description copied from interface: GroupFunction
      Determines the current state of a group based on a list of items
      Parameters:
      items - the items to calculate a group state for
      Returns:
      the calculated group state