Product.java 文件源码

/**
 * Returns null if the instance is valid, or a string representing the error.
 * <p>
 * @return null if the instance is valid, or a string representing the error.
 */
@Null(message = "ViolationMessage is not null, but '${validatedValue}'")
public String getViolationMessage() {
    if ( tradeName == null ) return null;
    if ( !tradeName.isBrand() ) return tradeName + " is not a Brand";
    if ( tradeName.getManufacturer().getPartNoSupport() == null ) return null; // No Support, so everything is ok.
    return tradeName.getManufacturer().getPartNoSupport().violationMessages(partNo);
}