Interface ChangeTransformer

  • All Superinterfaces:
    org.springframework.core.Ordered
    All Known Implementing Classes:
    DefaultChangeTransformer

    public interface ChangeTransformer
    extends org.springframework.core.Ordered
    Component responsible for applying data from a ChangeDetail to a target Trackable entity.
    Author:
    Jeff Fischer
    • Method Detail

      • getOrder

        default int getOrder()
        Specified by:
        getOrder in interface org.springframework.core.Ordered
      • applyChanges

        boolean applyChanges​(ChangeDetail detail,
                             Trackable target,
                             boolean reverse,
                             boolean addDetail,
                             boolean validateDetailVersion,
                             String explicitVersion)
        Apply a ChangeDetail to a target entity
        Parameters:
        detail - The change to apply
        target - The target entity receiving the field update
        reverse - Whether to reverse and apply the detail before value, or not reverse and apply the after value
        addDetail - Whether or not the detail should be added to the details collection on the target. If you were simply running through existing details to reset values, you would not want to add the details again as you did so, for example.
        validateDetailVersion - Whether or not to check the detail version against any already applied changes for the field. This is useful if you want to make sure that an older version cannot override an already applied newer version. Primarily used during deploy.
        explicitVersion - An indicator of change state for a sandbox entity (see ChangeDetail.getVersion())
        Returns:
        Whether or not this transformer handled application of this ChangeDetail. Return false if the transformer wants to ignore a given ChangeDetail, thereby allowing another transformer to handle it.