DomainFailure.java

package de.japrost.jabudget.domain;

/**
 * Failure codes for {@link DomainException}.
 */
public enum DomainFailure {
    /**
     * The entity to operate on already exists. E.g. when creating a new one.
     */
    DUPLICATE_ENTITY,
    /**
     * The entity to operate on does not exist. E.g. when try updating an existing one.
     */
    MISSING_ENTITY,
    /**
     * The object to operate on has reference to an entity that does not exist.
     */
    MISSING_ENTITY_REFERENCE,
    /**
     * The entity to locate does not exist. E.g. when try finding an existing one.
     */
    ENTITY_NOT_AVAILABLE;
}