使用 JacORB 客户端超时策略"org.omg.CORBA.BAD_OPERATION: Cannot extract ulonglong"

Question

我正在尝试使用java的JacORB为CORBA连接实现客户端超时策略。以下是我尝试实现的第一种方法

long timeout = 10000000L;
org.omg.CORBA.Any relativeRoundtripTimeoutValue = orb.create_any();
TimeTHelper.insert(relativeRoundtripTimeoutValue,timeout);
Policy[] policies = new Policy[1];
try {
    policies[0] = orb.create_policy(org.omg.Messaging.RELATIVE_RT_TIMEOUT_POLICY_TYPE.value,
                                        relativeRoundtripTimeoutValue);
    <client_stub>._set_policy_override(policies, SetOverrideType.ADD_OVERRIDE);
} catch (PolicyError e) {
    e.printStackTrace();
}

这个实现抛出

Caused by: org.omg.CORBA.BAD_OPERATION: Cannot extract ulonglong  vmcid: 0x0  minor code: 0     completed: No
at org.jacorb.orb.Any.checkExtract(Any.java:118)
at org.jacorb.orb.Any.extract_ulonglong(Any.java:467)
at org.jacorb.orb.policies.RelativeRoundtripTimeoutPolicy.<init>(RelativeRoundtripTimeoutPolicy.java:58)
at org.jacorb.orb.ORB.create_policy(ORB.java:774)

但是，当我将RELATIVE_RT_TIMEOUT_POLICY_TYPE更改为REPLY_END_TIME_POLICY_TYPE时，它运行时没有异常，但由于客户端等待而没有超时，因此没有产生预期的结果。

我也尝试了以下方法，它运行时没有异常，但客户再次无限期等待，没有超时。

Policy retquestTimeoutPolicy = new org.jacorb.orb.policies.RelativeRoundtripTimeoutPolicy (1000 * 10000);
applicationDataAccess._set_policy_override(new Policy[]{retquestTimeoutPolicy}, SetOverrideType.ADD_OVERRIDE);

我可能遗漏了一些小东西，但我是corba流的新手。所以任何帮助都会很棒。

Answer 1

要设置此策略，您应该使用PolicyManager对象的set_policy_overrides方法：

  long timeout = 10000000L;
  PolicyManager opm = (PolicyManager) orb.resolve_initial_references("ORBPolicyManager");
  Any relativeRoundtripTimeoutValue = orb.create_any();
  TimeTHelper.insert(relativeRoundtripTimeoutValue, timeout);
  Policy[] policies = new Policy[1];
  policies[0] = orb.create_policy(RELATIVE_RT_TIMEOUT_POLICY_TYPE.value,
      relativeRoundtripTimeoutValue);
  opm.set_policy_overrides(policies, SetOverrideType.ADD_OVERRIDE);

OpenORB源代码中有一个示例https://sourceforge.net/projects/openorb/files/OpenORB/1.4.0/OpenORB-1.4.0-src.zip/download:\OpenORB\src\examples\org\OpenORB\orb\examples\messaging\Client.java

Answer 2

当您设置覆盖时，它将应用于新对象，例如

new_object_with_policy=应用程序数据访问_set_policy_override（….

试着这么做？