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215 lines
9.2 KiB
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<div class="header">
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org.omg.CORBA
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<h2 class="title" title="Class NamedValue">Class NamedValue</h2>
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</div><div class="contentContainer">
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<ul class="inheritance">
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<li><a href="../../../java/lang/Object.html" title="class in java.lang">java.lang.Object</a></li>
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<li>
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<ul class="inheritance">
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<li>org.omg.CORBA.NamedValue</li>
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</ul> </li>
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</ul>
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<div class="description">
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<hr/> <br/> <pre>public abstract class <span class="typeNameLabel">NamedValue</span>
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extends <a href="../../../java/lang/Object.html" title="class in java.lang">Object</a></pre>
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<div class="block">
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<span>DII和DSI中使用的对象来描述参数和返回值。</span>
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<span><code>NamedValue</code>对象也被用在<code>Context</code>对象例程中传递属性名和值的列表。</span>
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<p> <span>一个<code>NamedValue</code>对象包含：</span> </p>
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<ul>
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<li> <span>一个名称 - 如果<code>NamedValue</code>对象用于描述请求的参数，则该名称将是OMG IDL接口定义中为要描述的操作指定的参数标识符。</span> </li>
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<li> <span>一个值 - 一个<code>Any</code>对象</span> </li>
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<li> <span>参数模式标志 - 以下之一：</span>
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<ul>
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<li> <code>ARG_IN.value</code> </li>
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<li> <code>ARG_OUT.value</code> </li>
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<li> <code>ARG_INOUT.value</code> </li>
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<li> <span>零-如果此<code>NamedValue</code>对象表示一个属性<code>Context</code>对象，而不是参数或返回值</span> </li>
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</ul></li>
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</ul>
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<p> <span><code>NamedValue</code>类有三种访问其领域的方法。</span> <span>以下代码片段演示了创建一个<code>NamedValue</code>对象，然后访问其字段：</span> </p>
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<pre> <span>ORB orb = ORB.init(args, null);
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String s = "argument_1";
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org.omg.CORBA.Any myAny = orb.create_any();
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myAny.insert_long(12345);
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int in = org.omg.CORBA.ARG_IN.value;
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org.omg.CORBA.NamedValue nv = orb.create_named_value(
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s, myAny, in);
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System.out.println("This nv name is " + nv.name());
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try {
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System.out.println("This nv value is " + nv.value().extract_long());
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System.out.println("This nv flag is " + nv.flags());
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} catch (org.omg.CORBA.BAD_OPERATION b) {
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System.out.println("extract failed");
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}</span> </pre>
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<p> <span>如果这个代码片段被放在一个<code>main</code>方法中，输出将如下所示：</span> </p>
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<pre> <span>This nv name is argument_1
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This nv value is 12345
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This nv flag is 1</span> </pre>
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<p> <span>请注意，方法<code>value</code>返回一个<code>Any</code>对象。</span> <span>为了访问所述<code>long</code>包含在<code>Any</code>对象，我们使用的方法<code>extract_long</code> 。</span> </p>
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</div>
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<dl>
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<dt>
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<span class="simpleTagLabel">从以下版本开始：</span>
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</dt>
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<dd>
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JDK1.2
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</dd>
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<dt>
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<span class="seeLabel">另请参见：</span>
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</dt>
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<dd>
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<span><a href="../../../org/omg/CORBA/Any.html" title="在org.omg.CORBA中的类"><code>Any</code></a> ， <a href="../../../org/omg/CORBA/ARG_IN.html" title="在org.omg.CORBA中的接口"><code>ARG_IN</code></a> ， <a href="../../../org/omg/CORBA/ARG_INOUT.html" title="在org.omg.CORBA中的接口"><code>ARG_INOUT</code></a> ， <a href="../../../org/omg/CORBA/ARG_OUT.html" title="在org.omg.CORBA中的接口"><code>ARG_OUT</code></a></span>
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</dd>
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</dl> </li>
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</ul>
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</div>
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<div class="summary">
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<li class="blockList">
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<ul class="blockList">
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<li class="blockList"><a name="constructor.summary">
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<!-- --> </a> <h3>构造方法摘要</h3>
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Constructor Summary table, listing constructors, and an explanation">
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<caption>
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<span>构造方法</span>
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<span class="tabEnd"> </span>
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</caption>
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<tbody>
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<tr>
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<th class="colOne" scope="col">Constructor and Description</th>
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</tr>
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<tr class="altColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/NamedValue.html#NamedValue--">NamedValue</a></span>()</code> </td>
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</tr>
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</tbody>
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</table> </li>
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</ul>
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<!-- ========== METHOD SUMMARY =========== -->
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<li class="blockList"><a name="method.summary">
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<!-- --> </a> <h3>方法摘要</h3>
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Method Summary table, listing methods, and an explanation">
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<caption>
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<span class="activeTableTab" id="t0"><span>所有方法</span><span class="tabEnd"> </span></span>
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<span class="tableTab" id="t2"><span><a href="javascript:show(2);">接口方法</a></span><span class="tabEnd"> </span></span>
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<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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</caption>
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<tbody>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colLast" scope="col">Method and Description</th>
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</tr>
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<tr class="altColor" id="i0">
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<td class="colFirst"><code>abstract int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/NamedValue.html#flags--">flags</a></span>()</code>
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<div class="block">
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检索此
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<code>NamedValue</code>对象的参数模式标志。
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</div> </td>
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</tr>
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<tr class="rowColor" id="i1">
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<td class="colFirst"><code>abstract <a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/NamedValue.html#name--">name</a></span>()</code>
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<div class="block">
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检索此
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<code>NamedValue</code>对象的名称。
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</div> </td>
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</tr>
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<tr class="altColor" id="i2">
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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>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/omg/CORBA/NamedValue.html#value--">value</a></span>()</code>
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<div class="block">
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检索此
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<code>NamedValue</code>对象的值。
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</div> </td>
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</tr>
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</tbody>
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</table>
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<ul class="blockList">
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<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object">
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<!-- --> </a> <h3>Methods inherited from class java.lang.<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a></h3> <code><a href="../../../java/lang/Object.html#clone--">clone</a>, <a href="../../../java/lang/Object.html#equals-java.lang.Object-">equals</a>, <a href="../../../java/lang/Object.html#finalize--">finalize</a>, <a href="../../../java/lang/Object.html#getClass--">getClass</a>, <a href="../../../java/lang/Object.html#hashCode--">hashCode</a>, <a href="../../../java/lang/Object.html#notify--">notify</a>, <a href="../../../java/lang/Object.html#notifyAll--">notifyAll</a>, <a href="../../../java/lang/Object.html#toString--">toString</a>, <a href="../../../java/lang/Object.html#wait--">wait</a>, <a href="../../../java/lang/Object.html#wait-long-">wait</a>, <a href="../../../java/lang/Object.html#wait-long-int-">wait</a></code></li>
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</ul> </li>
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</ul> </li>
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</ul>
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</div>
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<div class="details">
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<li class="blockList">
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<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<li class="blockList"><a name="constructor.detail">
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<!-- --> </a> <h3>构造方法详细信息</h3> <a name="NamedValue--">
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<!-- --> </a>
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<ul class="blockListLast">
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<li class="blockList"> <h4>NamedValue</h4> <pre>public NamedValue()</pre> </li>
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</ul> </li>
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</ul>
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<!-- ============ METHOD DETAIL ========== -->
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<ul class="blockList">
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<li class="blockList"><a name="method.detail">
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<!-- --> </a> <h3>方法详细信息</h3> <a name="name--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>name</h4> <pre>public abstract <a href="../../../java/lang/String.html" title="class in java.lang">String</a> name()</pre>
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<div class="block">
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检索此
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<code>NamedValue</code>对象的名称。
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</div>
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<dl>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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一个
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<code>String</code>对象，代表这个
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<code>NamedValue</code>对象的名字
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</dd>
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</dl> </li>
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</ul> <a name="value--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>value</h4> <pre>public abstract <a href="../../../org/omg/CORBA/Any.html" title="class in org.omg.CORBA">Any</a> value()</pre>
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<div class="block">
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检索此
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<code>NamedValue</code>对象的值。
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</div>
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<dl>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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一个包含该
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<code>Any</code>对象的值的
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<code>NamedValue</code>对象
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</dd>
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</dl> </li>
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</ul> <a name="flags--">
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<!-- --> </a>
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<ul class="blockListLast">
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<li class="blockList"> <h4>flags</h4> <pre>public abstract int flags()</pre>
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<div class="block">
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检索此
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<code>NamedValue</code>对象的参数模式标志。
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</div>
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<dl>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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一个
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<code>int</code>表示这个
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<code>NamedValue</code>对象的参数模式
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</dd>
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</dl> </li>
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</ul> </li>
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</ul> </li>
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</ul>
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</div> |