uTools-Manuals/docs/java/javax/management/AttributeValueExp.html

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     javax.management 
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<h2 class="title" title="Class AttributeValueExp">Class AttributeValueExp</h2>
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         All Implemented Interfaces: 
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<span><a href="../../java/io/Serializable.html" title="java.io中的接口">Serializable</a> ， <a href="../../javax/management/ValueExp.html" title="javax.management中的接口">ValueExp</a></span>
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<hr/> <br/> <pre>public class <span class="typeNameLabel">AttributeValueExp</span>
extends <a href="../../java/lang/Object.html" title="class in java.lang">Object</a>
implements <a href="../../javax/management/ValueExp.html" title="interface in javax.management">ValueExp</a></pre>
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<p> <span>表示用作关系约束的参数的属性。</span> <span>该类的实例通常使用<a href="../../javax/management/Query.html#attr-java.lang.String-"><code>Query.attr</code></a>获得。</span> </p>
<p> <span><code>AttributeValueExp</code>可用于需要<code>ValueExp</code>任何地方。</span> </p>
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<span class="simpleTagLabel">从以下版本开始：</span>
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         1.5 
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<span class="seeLabel">另请参见：</span>
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<a href="../../serialized-form.html#javax.management.AttributeValueExp">Serialized Form</a>
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<span>构造方法</span>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../javax/management/AttributeValueExp.html#AttributeValueExp--">AttributeValueExp</a></span>()</code>
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<span><span class="deprecatedLabel">已弃用</span></span>
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<span><span class="deprecationComment">使用此构造函数创建的实例不能在查询中使用。</span></span>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../javax/management/AttributeValueExp.html#AttributeValueExp-java.lang.String-">AttributeValueExp</a></span>(<a href="../../java/lang/String.html" title="class in java.lang">String</a> attr)</code>
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              创建一个新的 
             <code>AttributeValueExp</code>表示指定的对象属性，名为attr。 
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<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>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code><a href="../../javax/management/ValueExp.html" title="interface in javax.management">ValueExp</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/management/AttributeValueExp.html#apply-javax.management.ObjectName-">apply</a></span>(<a href="../../javax/management/ObjectName.html" title="class in javax.management">ObjectName</a> name)</code>
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              在MBean上应用 
             <code>AttributeValueExp</code> 。 
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<td class="colFirst"><code>protected <a href="../../java/lang/Object.html" title="class in java.lang">Object</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/management/AttributeValueExp.html#getAttribute-javax.management.ObjectName-">getAttribute</a></span>(<a href="../../javax/management/ObjectName.html" title="class in javax.management">ObjectName</a> name)</code>
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              返回指定的MBean中给定属性的值。 
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<td class="colFirst"><code><a href="../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/management/AttributeValueExp.html#getAttributeName--">getAttributeName</a></span>()</code>
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              返回属性名称的字符串表示形式。 
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/management/AttributeValueExp.html#setMBeanServer-javax.management.MBeanServer-">setMBeanServer</a></span>(<a href="../../javax/management/MBeanServer.html" title="interface in javax.management">MBeanServer</a> s)</code>
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<span><span class="deprecatedLabel">已弃用</span></span>
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<span><span class="deprecationComment">此方法无效。</span></span>
<span><span class="deprecationComment">用于获取属性值的MBean服务器是<a href="../../javax/management/QueryEval.html#getMBeanServer--"><code>QueryEval.getMBeanServer()</code></a> 。</span></span>
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<td class="colFirst"><code><a href="../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/management/AttributeValueExp.html#toString--">toString</a></span>()</code>
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              返回表示其值的字符串。 
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<li class="blockList"> <h4>AttributeValueExp</h4> <pre><a href="../../java/lang/Deprecated.html" title="annotation in java.lang">@Deprecated</a>
public AttributeValueExp()</pre>
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<span><span class="deprecatedLabel">已弃用</span></span>
<span><span class="deprecationComment">使用此构造函数创建的实例不能在查询中使用。</span></span>
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            一个 
           <code>AttributeValueExp</code>用null属性。 
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<li class="blockList"> <h4>AttributeValueExp</h4> <pre>public AttributeValueExp(<a href="../../java/lang/String.html" title="class in java.lang">String</a> attr)</pre>
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            创建一个新的 
           <code>AttributeValueExp</code>表示指定的对象属性，名为attr。 
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<span class="paramLabel">参数</span>
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<span><code>attr</code> -其值是此值的属性的名称<a href="../../javax/management/ValueExp.html" title="javax.management中的接口"><code>ValueExp</code></a> 。</span>
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<li class="blockList"> <h4>getAttributeName</h4> <pre>public <a href="../../java/lang/String.html" title="class in java.lang">String</a> getAttributeName()</pre>
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            返回属性名称的字符串表示形式。 
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<span class="returnLabel">结果</span>
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             属性名称。 
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<li class="blockList"> <h4>apply</h4> <pre>public <a href="../../javax/management/ValueExp.html" title="interface in javax.management">ValueExp</a> apply(<a href="../../javax/management/ObjectName.html" title="class in javax.management">ObjectName</a> name)
               throws <a href="../../javax/management/BadStringOperationException.html" title="class in javax.management">BadStringOperationException</a>,
                      <a href="../../javax/management/BadBinaryOpValueExpException.html" title="class in javax.management">BadBinaryOpValueExpException</a>,
                      <a href="../../javax/management/BadAttributeValueExpException.html" title="class in javax.management">BadAttributeValueExpException</a>,
                      <a href="../../javax/management/InvalidApplicationException.html" title="class in javax.management">InvalidApplicationException</a></pre>
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<p> <span>在MBean上应用<code>AttributeValueExp</code> 。</span> <span>该方法调用<a href="../../javax/management/AttributeValueExp.html#getAttribute-javax.management.ObjectName-"><code>getAttribute(name)</code></a>并将结果包装为<code>ValueExp</code> 。</span> <span>返回的值<code>getAttribute</code>必须是<code>Number</code> ， <code>String</code> ，或<code>Boolean</code> ;</span> <span>否则这种方法会引发一个<code>BadAttributeValueExpException</code> ，这将导致包含查询为此<code>name</code>为假。</span> </p>
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<span class="overrideSpecifyLabel">Specified by:</span>
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<code><a href="../../javax/management/ValueExp.html#apply-javax.management.ObjectName-">apply</a></code>在界面 
            <code><a href="../../javax/management/ValueExp.html" title="interface in javax.management">ValueExp</a></code>
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<span class="paramLabel">参数</span>
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<code>name</code> - 将应用 
            <code>AttributeValueExp</code>的MBean的名称。 
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<span class="returnLabel">结果</span>
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<dd>
<code>ValueExp</code> 。 
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<span class="throwsLabel">异常</span>
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<dd>
<code><a href="../../javax/management/BadAttributeValueExpException.html" title="class in javax.management">BadAttributeValueExpException</a></code>
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<code><a href="../../javax/management/InvalidApplicationException.html" title="class in javax.management">InvalidApplicationException</a></code>
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<code><a href="../../javax/management/BadStringOperationException.html" title="class in javax.management">BadStringOperationException</a></code>
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<code><a href="../../javax/management/BadBinaryOpValueExpException.html" title="class in javax.management">BadBinaryOpValueExpException</a></code>
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<li class="blockList"> <h4>toString</h4> <pre>public <a href="../../java/lang/String.html" title="class in java.lang">String</a> toString()</pre>
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            返回表示其值的字符串。 
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<span class="overrideSpecifyLabel">重写：</span>
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<code><a href="../../java/lang/Object.html#toString--">toString</a></code>在 
            <code><a href="../../java/lang/Object.html" title="class in java.lang">Object</a></code>
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<span class="returnLabel">结果</span>
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             对象的字符串表示形式。 
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<li class="blockList"> <h4>setMBeanServer</h4> <pre><a href="../../java/lang/Deprecated.html" title="annotation in java.lang">@Deprecated</a>
public void setMBeanServer(<a href="../../javax/management/MBeanServer.html" title="interface in javax.management">MBeanServer</a> s)</pre>
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<span><span class="deprecatedLabel">已弃用</span></span>
<span><span class="deprecationComment">此方法无效。</span></span>
<span><span class="deprecationComment">用于获取属性值的MBean Server为<a href="../../javax/management/QueryEval.html#getMBeanServer--"><code>QueryEval.getMBeanServer()</code></a> 。</span></span>
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            设置要执行查询的MBean服务器。 
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<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../javax/management/ValueExp.html#setMBeanServer-javax.management.MBeanServer-">setMBeanServer</a></code>在界面 
            <code><a href="../../javax/management/ValueExp.html" title="interface in javax.management">ValueExp</a></code>
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<span class="paramLabel">参数</span>
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<code>s</code> - 要执行查询的MBean服务器。 
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<li class="blockList"> <h4>getAttribute</h4> <pre>protected <a href="../../java/lang/Object.html" title="class in java.lang">Object</a> getAttribute(<a href="../../javax/management/ObjectName.html" title="class in javax.management">ObjectName</a> name)</pre>
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<p> <span>返回指定的MBean中给定属性的值。</span> <span>如果访问属性的尝试生成异常，则返回null。</span> </p>
<p> <span>使用的MBean服务器是由<a href="../../javax/management/QueryEval.html#getMBeanServer--"><code>QueryEval.getMBeanServer()</code></a>返回的。</span> </p>
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<span class="paramLabel">参数</span>
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<code>name</code> - 要返回其属性的MBean的名称。 
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<span class="returnLabel">结果</span>
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             the value of the attribute, or null if it could not be obtained. 
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