DeployerValidator.java 文件源码

private void validateField(Field f, Object obj) throws IllegalArgumentException, IllegalAccessException {
    XmlType xtype = obj.getClass().getAnnotation(XmlType.class);
    if (xtype == null) {
        return;
    }

    Object val = f.get(obj);
    String elementName = xtype.name();
    logger.debug(String.format("validating %s->%s", elementName, f.getName()));

    XmlElement eat = f.getAnnotation(XmlElement.class);
    if (eat != null && eat.required() && val == null) {
        throw new IllegalArgumentException(String.format("field[%s] of element[%s] is mandatory, cannot be missed", f.getName(), elementName));
    }

    XmlAttribute aat = f.getAnnotation(XmlAttribute.class);
    if (aat != null && aat.required() && val == null) {
        throw new IllegalArgumentException(String.format("field[%s] of element[%s] is mandatory, cannot be missed", aat.name(), elementName));
    }

    if (val != null) {
        validateObject(val);
    }
}