uTools-Manuals/docs/java/org/omg/CORBA/Request.html

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     org.omg.CORBA 
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<h2 class="title" title="Class Request">Class Request</h2>
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<hr/> <br/> <pre>public abstract class <span class="typeNameLabel">Request</span>
extends <a href="../../../java/lang/Object.html" title="class in java.lang">Object</a></pre>
<div class="block">
<span>包含调用方法所需信息的对象。</span>
<span>这个类是ORB动态调用接口（DII）的基石，它允许动态创建和调用请求。</span>
<span>服务器无法使用客户端存根和使用DII的请求来区分客户机调用之间的区别。</span>
<p> <span>一个<code>Request</code>对象包括：</span> </p>
<ul>
<li> <span>要调用的操作的名称</span> </li>
<li> <span>一个<code>NVList</code>包含操作的参数。</span> <br/> <span>列表中的每个项目都是一个<code>NamedValue</code>对象，它有三个部分：</span>
<ol>
<li> <span>参数的名称</span> </li>
<li> <span>参数的值（作为<code>Any</code>对象）</span> </li>
<li> <span>指示参数是用于输入，输出还是两者的参数模式标志</span> </li>
</ol></li>
</ul>
<p> <span><code>Request</code>对象还可能包含附加信息，具体取决于在原始IDL接口定义中如何定义操作。</span> <span>例如，在适当的情况下，它们可能包含一个<code>NamedValue</code>对象来保存返回值或异常，上下文，可能的异常列表以及需要解析的上下文字符串列表。</span> </p>
<p> <span>新的<code>Request</code>对象是使用<code>Object</code>类中的<code>create_request</code>方法之一创建的。</span> <span>换句话说，对要调用的对象执行<code>create_request</code>方法。</span> </p>
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<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<span><a href="../../../org/omg/CORBA/NamedValue.html" title="在org.omg.CORBA中的类"><code>NamedValue</code></a></span>
</dd>
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<span>构造方法</span>
<span class="tabEnd"> </span>
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<tbody>
<tr>
<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#Request--">Request</a></span>()</code> </td>
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<caption>
<span class="activeTableTab" id="t0"><span>所有方法</span><span class="tabEnd"> </span></span>
<span class="tableTab" id="t2"><span><a href="javascript:show(2);">接口方法</a></span><span class="tabEnd"> </span></span>
<span class="tableTab" id="t3"><span><a href="javascript:show(4);">抽象方法</a></span><span class="tabEnd"> </span></span>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#add_in_arg--">add_in_arg</a></span>()</code>
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              创建输入参数并将其添加到此 
             <code>Request</code>对象。 
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<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#add_inout_arg--">add_inout_arg</a></span>()</code>
<div class="block">
              向此 
             <code>Request</code>对象添加一个输入/输出参数。 
            </div> </td>
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<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#add_named_in_arg-java.lang.String-">add_named_in_arg</a></span>(<a href="../../../java/lang/String.html" title="class in java.lang">String</a> name)</code>
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              创建一个给定名称的输入参数，并将其添加到此 
             <code>Request</code>对象。 
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<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#add_named_inout_arg-java.lang.String-">add_named_inout_arg</a></span>(<a href="../../../java/lang/String.html" title="class in java.lang">String</a> name)</code>
<div class="block">
              将给定名称的输入/输出参数添加到此 
             <code>Request</code>对象。 
            </div> </td>
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<tr class="altColor" id="i4">
<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#add_named_out_arg-java.lang.String-">add_named_out_arg</a></span>(<a href="../../../java/lang/String.html" title="class in java.lang">String</a> name)</code>
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              将给定名称的输出参数添加到此 
             <code>Request</code>对象。 
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<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#add_out_arg--">add_out_arg</a></span>()</code>
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              向此 
             <code>Request</code>对象添加一个输出参数。 
            </div> </td>
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<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/NVList.html" title="class in org.omg.CORBA">NVList</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#arguments--">arguments</a></span>()</code>
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              检索包含要调用方法的参数的 
             <code>NVList</code>对象。 
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<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/ContextList.html" title="class in org.omg.CORBA">ContextList</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#contexts--">contexts</a></span>()</code>
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              检索此请求的 
             <code>ContextList</code>对象。 
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<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/Context.html" title="class in org.omg.CORBA">Context</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#ctx--">ctx</a></span>()</code>
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              检索此请求的 
             <code>Context</code>对象。 
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<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#ctx-org.omg.CORBA.Context-">ctx</a></span>(<a href="../../../org/omg/CORBA/Context.html" title="class in org.omg.CORBA">Context</a> c)</code>
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              将此请求的 
             <code>Context</code>对象设置为给定的对象。 
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<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/Environment.html" title="class in org.omg.CORBA">Environment</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#env--">env</a></span>()</code>
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              检索此请求的 
             <code>Environment</code>对象。 
            </div> </td>
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<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/ExceptionList.html" title="class in org.omg.CORBA">ExceptionList</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#exceptions--">exceptions</a></span>()</code>
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              检索此请求的 
             <code>ExceptionList</code>对象。 
            </div> </td>
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<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#get_response--">get_response</a></span>()</code>
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              允许用户使用 
             <code>send_deferred</code>方法访问先前触发的调用响应。 
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<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#invoke--">invoke</a></span>()</code>
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              使用 
             <code>Request</code>对象中的信息进行 
             <code>Request</code>调用。 
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<td class="colFirst"><code>abstract <a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#operation--">operation</a></span>()</code>
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              检索要调用的方法的名称。 
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<td class="colFirst"><code>abstract boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#poll_response--">poll_response</a></span>()</code>
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              允许用户确定是否已接收到早期使用 
             <code>send_deferred</code>方法触发的调用响应。 
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<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/NamedValue.html" title="class in org.omg.CORBA">NamedValue</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#result--">result</a></span>()</code>
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              检索包含方法返回值的 
             <code>NamedValue</code>对象。 
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<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#return_value--">return_value</a></span>()</code>
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              返回包含该方法结果值的 
             <code>Any</code>对象。 
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<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#send_deferred--">send_deferred</a></span>()</code>
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              对请求进行异步调用。 
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<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#send_oneway--">send_oneway</a></span>()</code>
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              根据请求进行单向调用。 
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<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#set_return_type-org.omg.CORBA.TypeCode-">set_return_type</a></span>(<a href="../../../org/omg/CORBA/TypeCode.html" title="class in org.omg.CORBA">TypeCode</a> tc)</code>
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              设置方法的返回值的类型代码。 
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<td class="colFirst"><code>abstract <a href="../../../org/omg/CORBA/Object.html" title="interface in org.omg.CORBA">Object</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/Request.html#target--">target</a></span>()</code>
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              检索目标对象引用。 
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<li class="blockList"> <h4>Request</h4> <pre>public Request()</pre> </li>
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            检索目标对象引用。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             指向要调用的方法的对象实现的对象引用 
           </dd>
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<li class="blockList"> <h4>operation</h4> <pre>public abstract <a href="../../../java/lang/String.html" title="class in java.lang">String</a> operation()</pre>
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            检索要调用的方法的名称。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             要调用的方法的名称 
           </dd>
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<li class="blockList"> <h4>arguments</h4> <pre>public abstract <a href="../../../org/omg/CORBA/NVList.html" title="class in org.omg.CORBA">NVList</a> arguments()</pre>
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<span>检索包含要调用方法的参数的<code>NVList</code>对象。</span>
<span>列表中的元素是<code>NamedValue</code>对象，每个对象都描述了该方法的参数。</span>
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
<code>NVList</code>对象包含该方法的参数 
           </dd>
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<li class="blockList"> <h4>result</h4> <pre>public abstract <a href="../../../org/omg/CORBA/NamedValue.html" title="class in org.omg.CORBA">NamedValue</a> result()</pre>
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<span class="returnLabel">结果</span>
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<span class="returnLabel">结果</span>
</dt>
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<dl>
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<span class="returnLabel">结果</span>
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<dd></dd>
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<li class="blockList"> <h4>contexts</h4> <pre>public abstract <a href="../../../org/omg/CORBA/ContextList.html" title="class in org.omg.CORBA">ContextList</a> contexts()</pre>
<div class="block">
<span>检索此请求的<code>ContextList</code>对象。</span>
<span>这个列表包含上下文<code>String</code> s表示需要解析并随调用发送。</span>
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             需要解析其值并通过调用发送的上下文字符串列表。 
           </dd>
</dl> </li>
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<li class="blockList"> <h4>ctx</h4> <pre>public abstract <a href="../../../org/omg/CORBA/Context.html" title="class in org.omg.CORBA">Context</a> ctx()</pre>
<div class="block">
<span>检索此请求的<code>Context</code>对象。</span>
<span>这是提供有关客户端，环境或此请求的情况的信息的属性列表。</span>
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             该 
            <code>Context</code>对象，它是被用来解决任何上下文字符串，其值需要与调用一起发送 
           </dd>
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<li class="blockList"> <h4>ctx</h4> <pre>public abstract void ctx(<a href="../../../org/omg/CORBA/Context.html" title="class in org.omg.CORBA">Context</a> c)</pre>
<div class="block">
            将此请求的 
           <code>Context</code>对象设置为给定的对象。 
          </div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>c</code> - 用于解析上下文字符串的新的 
            <code>Context</code>对象 
           </dd>
</dl> </li>
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<li class="blockList"> <h4>add_in_arg</h4> <pre>public abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a> add_in_arg()</pre>
<div class="block">
            创建输入参数并将其添加到此 
           <code>Request</code>对象。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             一个 
            <code>Any</code>对象，其中包含添加的输入参数的值和类型代码 
           </dd>
</dl> </li>
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<li class="blockList"> <h4>add_named_in_arg</h4> <pre>public abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a> add_named_in_arg(<a href="../../../java/lang/String.html" title="class in java.lang">String</a> name)</pre>
<div class="block">
            使用给定的名称创建输入参数，并将其添加到此 
           <code>Request</code>对象。 
          </div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>name</code> - 要添加的参数的名称 
           </dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             一个 
            <code>Any</code>对象，其中包含添加的输入参数的值和类型代码 
           </dd>
</dl> </li>
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<li class="blockList"> <h4>add_inout_arg</h4> <pre>public abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a> add_inout_arg()</pre>
<div class="block">
            在此 
           <code>Request</code>对象中添加一个输入/输出参数。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             一个 
            <code>Any</code>对象，其中包含添加的输入/输出参数的值和类型代码 
           </dd>
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<li class="blockList"> <h4>add_named_inout_arg</h4> <pre>public abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a> add_named_inout_arg(<a href="../../../java/lang/String.html" title="class in java.lang">String</a> name)</pre>
<div class="block">
            将具有给定名称的输入/输出参数添加到此 
           <code>Request</code>对象。 
          </div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>name</code> - 要添加的参数的名称 
           </dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             一个 
            <code>Any</code>对象，其中包含添加的输入/输出参数的值和类型代码 
           </dd>
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<li class="blockList"> <h4>add_out_arg</h4> <pre>public abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a> add_out_arg()</pre>
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            向此 
           <code>Request</code>对象添加输出参数。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             一个 
            <code>Any</code>对象，其中包含添加的输出参数的值和类型代码 
           </dd>
</dl> </li>
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<li class="blockList"> <h4>add_named_out_arg</h4> <pre>public abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a> add_named_out_arg(<a href="../../../java/lang/String.html" title="class in java.lang">String</a> name)</pre>
<div class="block">
            将给定名称的输出参数添加到此 
           <code>Request</code>对象。 
          </div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>name</code> - 要添加的参数的名称 
           </dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             一个 
            <code>Any</code>对象，其中包含添加的输出参数的值和类型代码 
           </dd>
</dl> </li>
</ul> <a name="set_return_type-org.omg.CORBA.TypeCode-">
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<li class="blockList"> <h4>set_return_type</h4> <pre>public abstract void set_return_type(<a href="../../../org/omg/CORBA/TypeCode.html" title="class in org.omg.CORBA">TypeCode</a> tc)</pre>
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            设置方法的返回值的类型代码。 
          </div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>tc</code> - 包含返回值的类型信息的 
            <code>TypeCode</code>对象 
           </dd>
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<li class="blockList"> <h4>return_value</h4> <pre>public abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a> return_value()</pre>
<div class="block">
            返回包含方法结果值的 
           <code>Any</code>对象。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
             一个 
            <code>Any</code>返回值的值和类型代码的 
            <code>Any</code>对象 
           </dd>
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<li class="blockList"> <h4>invoke</h4> <pre>public abstract void invoke()</pre>
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<span>使用<code>Request</code>对象中的信息进行<code>Request</code>调用。</span>
<span>异常信息放在<code>Request</code>对象的环境对象中。</span>
</div> </li>
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<li class="blockList"> <h4>send_oneway</h4> <pre>public abstract void send_oneway()</pre>
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<span>根据请求进行单向调用。</span>
<span>换句话说，它不期待或等待响应。</span>
<span>请注意，即使操作在IDL声明中未声明为单向操作也可以使用。</span>
<span>没有返回任何响应或异常信息。</span>
</div> </li>
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<li class="blockList"> <h4>send_deferred</h4> <pre>public abstract void send_deferred()</pre>
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<span>对请求进行异步调用。</span>
<span>换句话说，它在返回给用户之前不等待响应。</span>
<span>用户随后可以使用方法<code>poll_response</code>和<code>get_response</code>获取<code>get_response</code>的结果或异常信息。</span>
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<li class="blockList"> <h4>poll_response</h4> <pre>public abstract boolean poll_response()</pre>
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            允许用户确定是否已接收到针对早先触发的调用使用 
           <code>send_deferred</code>方法。 
          </div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
<span><code>true</code>如果方法响应已经收到;</span>
<span><code>false</code>否则</span>
</dd>
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<li class="blockList"> <h4>get_response</h4> <pre>public abstract void get_response()
                           throws <a href="../../../org/omg/CORBA/WrongTransaction.html" title="class in org.omg.CORBA">WrongTransaction</a></pre>
<div class="block">
            允许用户使用 
           <code>send_deferred</code>方法访问先前触发的调用响应。 
          </div>
<dl>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<span><code><a href="../../../org/omg/CORBA/WrongTransaction.html" title="class in org.omg.CORBA">WrongTransaction</a></code> - 如果方法<code>get_response</code>是从不同的事务的范围调用的，而不是请求最初发送的范围。</span>
<span>有关详细信息，请参阅OMG事务服务规范。</span>
</dd>
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</ul> </li>
</ul>
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