Package com.twicedb.shared

Record Class ObjectId

java.lang.Object
java.lang.Record
com.twicedb.shared.ObjectId
public record ObjectId(String objectId) extends Record
A unique identifier for each object in TwiceDB. This may be specified by the user or auto-assigned, depending on the API used for writing. Once written, data may be queried by ObjectId.

ObjectId is permanent for the lifecycle of any given instance of an object.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ObjectId(String objectId)
    Creates an instance of a ObjectId 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.
    String
    objectId()
    Returns the value of the objectId record component.
    final String
    toString()
    Returns a string representation of this record class.
    boolean
    valid()
     

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • ObjectId

      public ObjectId(String objectId)
      Creates an instance of a ObjectId record class.
      Parameters:
      objectId - the value for the objectId record component

  • Method Details

    • valid

      public boolean valid()

    • 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.

    • objectId

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