Package org.apache.tapestry5.services

## Interface PersistentFieldChange

- All Known Implementing Classes:
    `PersistentFieldChangeImpl`

      public interface PersistentFieldChange

  Represents a previously stored change to a persistent field, within the context of a particular page of the application.

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `String` | `getComponentId()` | Returns the nested id of the component, or the empty string for the page's root component.
    `String` | `getFieldName()` | Returns the name of the field for which a change was recorded.
    `Object` | `getValue()` | Returns the new value for the field (which may be null).

- - ### Method Detail

    - #### getComponentId

          String getComponentId()

      Returns the nested id of the component, or the empty string for the page's root component.

    - #### getFieldName

          String getFieldName()

      Returns the name of the field for which a change was recorded.

    - #### getValue

          Object getValue()

      Returns the new value for the field (which may be null).