Record Class ModernMaterialStore.ModernInventoryStats

java.lang.Object
java.lang.Record
com.university.bookstore.api.ModernMaterialStore.ModernInventoryStats
Record Components:
totalCount - total number of materials
averagePrice - average price of all materials
medianPrice - median price of all materials
uniqueTypes - number of unique material types
mediaCount - number of media materials
printCount - number of printed materials
Enclosing interface:
ModernMaterialStore
public static record ModernMaterialStore.ModernInventoryStats(int totalCount, double averagePrice, double medianPrice, int uniqueTypes, int mediaCount, int printCount) extends Record
Modern InventoryStats using Java record for immutability. Records provide built-in equals(), hashCode(), and toString() methods.
Since:
2024-09-15
Version:
4.0
Author:
Navid Mohaghegh

  • Constructor Details

    • ModernInventoryStats

      public ModernInventoryStats(int totalCount, double averagePrice, double medianPrice, int uniqueTypes, int mediaCount, int printCount)
      Compact constructor for validation.

  • Method Details

    • empty

      public static ModernMaterialStore.ModernInventoryStats empty()
      Creates an empty stats instance.
      Returns:
      stats with all zero values

    • isEmpty

      public boolean isEmpty()
      Checks if the inventory is empty.
      Returns:
      true if total count is zero

    • getMediaPercentage

      public double getMediaPercentage()
      Gets the percentage of media materials.
      Returns:
      media percentage (0-100)

    • getPrintPercentage

      public double getPrintPercentage()
      Gets the percentage of print materials.
      Returns:
      print percentage (0-100)

    • getSummary

      public String getSummary()
      Creates a summary string for reporting.
      Returns:
      formatted summary

    • toString

      public final String toString()
      Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.
      Specified by:
      toString in class Record
      Returns:
      a string representation of this object

    • hashCode

      public final int hashCode()
      Returns a hash code value for this object. The value is derived from the hash code of each of the record components.
      Specified by:
      hashCode in class Record
      Returns:
      a hash code value for this object

    • equals

      public final boolean equals(Object o)
      Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with the compare method from their corresponding wrapper classes.
      Specified by:
      equals in class Record
      Parameters:
      o - the object with which to compare
      Returns:
      true if this object is the same as the o argument; false otherwise.

    • totalCount

      public int totalCount()
      Returns the value of the totalCount record component.
      Returns:
      the value of the totalCount record component

    • averagePrice

      public double averagePrice()
      Returns the value of the averagePrice record component.
      Returns:
      the value of the averagePrice record component

    • medianPrice

      public double medianPrice()
      Returns the value of the medianPrice record component.
      Returns:
      the value of the medianPrice record component

    • uniqueTypes

      public int uniqueTypes()
      Returns the value of the uniqueTypes record component.
      Returns:
      the value of the uniqueTypes record component

    • mediaCount

      public int mediaCount()
      Returns the value of the mediaCount record component.
      Returns:
      the value of the mediaCount record component

    • printCount

      public int printCount()
      Returns the value of the printCount record component.
      Returns:
      the value of the printCount record component