Package com.example.springrest.dto

Record Class ProductResponse

java.lang.Object
java.lang.Record
com.example.springrest.dto.ProductResponse
public record ProductResponse(Long id, String name, BigDecimal price) extends Record
Response DTO returned to clients for Product resources.

Shape: minimal, stable fields optimized for clients. Avoids leaking internal entity details and supports versioned evolution.

Example (JSON):


 {
   "id": 42,
   "name": "Coffee Mug",
   "price": 12.99
 }

Usage (Service → Controller):


 Product p = productService.getOrThrow(id);
 return new ProductResponse(p.getId(), p.getName(), p.getPrice());
Since:
1.0

  • Constructor Summary

    Constructors
    Constructor
    Description
    ProductResponse(Long id, String name, BigDecimal price)
    Creates an instance of a ProductResponse record class.

  • Method Summary

    Modifier and Type
    Method
    Description
    final boolean
    equals(Object o)
    Indicates whether some other object is "equal to" this one.
    final int
    hashCode()
    Returns a hash code value for this object.
    Long
    id()
    Returns the value of the id record component.
    String
    name()
    Returns the value of the name record component.
    BigDecimal
    price()
    Returns the value of the price record component.
    final String
    toString()
    Returns a string representation of this record class.

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

  • Constructor Details

    • ProductResponse

      public ProductResponse(Long id, String name, BigDecimal price)
      Creates an instance of a ProductResponse record class.
      Parameters:
      id - the value for the id record component
      name - the value for the name record component
      price - the value for the price record component

  • Method Details

    • 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 Objects::equals(Object,Object).
      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.

    • id

      public Long id()
      Returns the value of the id record component.
      Returns:
      the value of the id record component

    • name

      public String name()
      Returns the value of the name record component.
      Returns:
      the value of the name record component

    • price

      public BigDecimal price()
      Returns the value of the price record component.
      Returns:
      the value of the price record component