MBeanServerDelegateImpl.java 文件源码

/**
 * Makes it possible to get the values of several attributes of
 * the MBeanServerDelegate.
 *
 * @param attributes A list of the attributes to be retrieved.
 *
 * @return  The list of attributes retrieved.
 *
 */
public AttributeList getAttributes(String[] attributes) {
    // If attributes is null, the get all attributes.
    //
    final String[] attn = (attributes==null?attributeNames:attributes);

    // Prepare the result list.
    //
    final int len = attn.length;
    final AttributeList list = new AttributeList(len);

    // Get each requested attribute.
    //
    for (int i=0;i<len;i++) {
        try {
            final Attribute a =
                new Attribute(attn[i],getAttribute(attn[i]));
            list.add(a);
        } catch (Exception x) {
            // Skip the attribute that couldn't be obtained.
            //
            if (MBEANSERVER_LOGGER.isLoggable(Level.FINEST)) {
                MBEANSERVER_LOGGER.logp(Level.FINEST,
                        MBeanServerDelegateImpl.class.getName(),
                        "getAttributes",
                        "Attribute " + attn[i] + " not found");
            }
        }
    }

    // Finally return the result.
    //
    return list;
}