Module litebridge.orm
Package org.litebridgedb.orm.api.spec

Record Class OneToMany

java.lang.Object
java.lang.Record
org.litebridgedb.orm.api.spec.OneToMany
Record Components:
mappedByField - The FieldSpec defining the field in the DTO that refers to the related collection of database rows.
All Implemented Interfaces:
ColumnMapping
public record OneToMany(FieldSpec mappedByField) extends Record implements ColumnMapping
Represents a one-to-many relationship mapping between a field in a DTO and a corresponding collection of rows in a database table.

This class is used within the context of the ORM to define a mapping where a single field in a DTO is associated with multiple related entries in another table. The field is specified using a FieldSpec which holds the name and access characteristics of the field.

The `OneToMany` relationship is useful, for example, to model scenarios such as: - A single entity having multiple child entities (e.g., a customer with many orders). - One-to-many hierarchical relationships between database rows.

Implements the ColumnMapping interface to allow its usage within column mapping operations.

  • Constructor Details

    • OneToMany

      public OneToMany(FieldSpec mappedByField)
      Creates an instance of a OneToMany record class.
      Parameters:
      mappedByField - the value for the mappedByField 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.

    • mappedByField

      public FieldSpec mappedByField()
      Returns the value of the mappedByField record component.
      Returns:
      the value of the mappedByField record component