Package io.permazen.change

Class MapFieldRemove<T,K,V>

java.lang.Object
io.permazen.change.Change<T>
io.permazen.change.FieldChange<T>
io.permazen.change.MapFieldChange<T>
io.permazen.change.MapFieldRemove<T,K,V>
Type Parameters:
T - the type of the object containing the changed field
K - the type of the changed map's key
V - the type of the changed map's value
public class MapFieldRemove<T,K,V> extends MapFieldChange<T>
Notification object that gets passed to @OnChange-annotated methods when a key/value pair is removed from a map field.

  • Constructor Details

    • MapFieldRemove

      public MapFieldRemove(T jobj, String fieldName, K key, V value)
      Constructor.
      Parameters:
      jobj - Java object containing the map field that changed
      fieldName - the name of the field that changed
      key - the key of the removed key/value pair
      value - the value of the removed key/value pair
      Throws:
      IllegalArgumentException - if jobj or fieldName is null

  • Method Details

    • visit

      public <R> R visit(ChangeSwitch<R> target)
      Description copied from class: Change
      Apply visitor pattern. Invokes the method of target corresponding to this instance's type.
      Specified by:
      visit in class Change<T>
      Type Parameters:
      R - visitor return type
      Parameters:
      target - visitor pattern target
      Returns:
      value returned by the selected method of target

    • apply

      public void apply(PermazenTransaction jtx, PermazenObject jobj)
      Description copied from class: Change
      Apply this change to the given object in the given transaction.
      Specified by:
      apply in class Change<T>
      Parameters:
      jtx - the transaction in which to apply this change
      jobj - the target object to which to apply this change

    • getKey

      public K getKey()
      Get the key of the key/value pair that was removed.
      Returns:
      the key of the removed key/value pair

    • getValue

      public V getValue()
      Get the value of the key/value pair that was removed.
      Returns:
      the value of the removed key/value pair

    • equals

      public boolean equals(Object obj)
      Overrides:
      equals in class FieldChange<T>

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class FieldChange<T>

    • toString

      public String toString()
      Overrides:
      toString in class Object