OldMBeanServerTest.java 文件源码

public Set<ObjectInstance> queryMBeans(ObjectName name, QueryExp query) {
    Set<ObjectInstance> instances = newSet();
    if (name == null)
        name = ObjectName.WILDCARD;
    if (query == null)
        query = trueQuery;
    MBeanServer oldMBS = QueryEval.getMBeanServer();
    try {
        query.setMBeanServer(this);
        for (ObjectName n : mbeans.keySet()) {
            if (name.apply(n)) {
                try {
                    if (query.apply(n))
                        instances.add(getObjectInstance(n));
                } catch (Exception e) {
                    // OK: Ignore this MBean in the result
                }
            }
        }
    } finally {
        query.setMBeanServer(oldMBS);
    }
    return instances;
}