import { ColumnMetadata } from "../metadata/ColumnMetadata"
import { RelationMetadata } from "../metadata/RelationMetadata"
import { Subject } from "./Subject"

/**
 * Change for insertion or updation of the column of the subject.
 */
export interface SubjectChangeMap {
    /**
     * Column that needs to be changed.
     * Either column, either relation must be set in the change.
     */
    column?: ColumnMetadata

    /**
     * Relation that needs to be changed.
     * Either column, either relation must be set in the change.
     */
    relation?: RelationMetadata

    /**
     * Value needs to be inserted into given column.
     * This value can also be another subject, when this column has a referenced column.
     */
    value: Subject | any
}