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| <h2 title="Class SubjectAwareExecutor" class="title">Class SubjectAwareExecutor</h2> |
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| <li>org.apache.shiro.concurrent.SubjectAwareExecutor</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink">Executor</a></code></dd> |
| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><code><a href="SubjectAwareExecutorService.html" title="class in org.apache.shiro.concurrent">SubjectAwareExecutorService</a></code></dd> |
| </dl> |
| <hr> |
| <pre>public class <a href="../../../../src-html/org/apache/shiro/concurrent/SubjectAwareExecutor.html#line.56">SubjectAwareExecutor</a> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> |
| implements <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink">Executor</a></pre> |
| <div class="block"><code>Executor</code> implementation that will automatically first associate any argument |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang" class="externalLink"><code>Runnable</code></a> instances with the currently available <a href="../subject/Subject.html" title="interface in org.apache.shiro.subject"><code>Subject</code></a> and then |
| dispatch the Subject-enabled runnable to an underlying delegate <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink"><code>Executor</code></a> |
| instance. |
| <p/> |
| This is a simplification for applications that want to execute code as the currently |
| executing <code>Subject</code> on another thread, but don't want or need to call the |
| <a href="../subject/Subject.html#associateWith(java.lang.Runnable)"><code>Subject.associateWith(Runnable)</code></a> method and dispatch to a Thread manually. This |
| simplifies code and reduces Shiro dependencies across application source code. |
| <p/> |
| Consider this code that could be repeated in many places across an application: |
| <pre> |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang" class="externalLink"><code>Runnable</code></a> applicationWork = //instantiate or acquire Runnable from somewhere |
| <a href="../subject/Subject.html" title="interface in org.apache.shiro.subject"><code>Subject</code></a> subject = <a href="../SecurityUtils.html" title="class in org.apache.shiro"><code>SecurityUtils</code></a>.<a href="../SecurityUtils.html#getSubject()"><code>getSubject()</code></a>; |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang" class="externalLink"><code>Runnable</code></a> work = subject.<a href="../subject/Subject.html#associateWith(java.lang.Runnable)"><code>associateWith(applicationWork)</code></a>; |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink"><code>anExecutor</code></a>.<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true#execute(java.lang.Runnable)" title="class or interface in java.util.concurrent" class="externalLink"><code>execute(work)</code></a>; |
| </pre> |
| Instead, if the <code>Executor</code> instance used in application code is an instance of this class (which delegates |
| to the target Executor that you want), all places in code like the above reduce to this: |
| <pre> |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang" class="externalLink"><code>Runnable</code></a> applicationWork = //instantiate or acquire Runnable from somewhere |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink"><code>anExecutor</code></a>.<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true#execute(java.lang.Runnable)" title="class or interface in java.util.concurrent" class="externalLink"><code>execute(work)</code></a>; |
| </pre> |
| Notice there is no use of the Shiro API in the 2nd code block, encouraging the principle of loose coupling across |
| your codebase.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>1.0</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="SubjectAwareExecutorService.html" title="class in org.apache.shiro.concurrent"><code>SubjectAwareExecutorService</code></a></dd> |
| </dl> |
| </li> |
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| <tr> |
| <th class="colFirst" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">SubjectAwareExecutor</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(java.util.concurrent.Executor)">SubjectAwareExecutor</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink">Executor</a> targetExecutor)</code></th> |
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| <h3>Method Summary</h3> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Runnable</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#associateWithSubject(java.lang.Runnable)">associateWithSubject</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Runnable</a> r)</code></th> |
| <td class="colLast"> |
| <div class="block">Utility method for subclasses to associate the argument <code>Runnable</code> with the currently executing subject |
| and then return the associated Runnable.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#execute(java.lang.Runnable)">execute</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Runnable</a> command)</code></th> |
| <td class="colLast"> |
| <div class="block">Executes the specified runnable by first associating it with the currently executing <code>Subject</code> and then |
| dispatches the associated Runnable to the underlying target <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink"><code>Executor</code></a> instance.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>protected <a href="../subject/Subject.html" title="interface in org.apache.shiro.subject">Subject</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSubject()">getSubject</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the currently Subject instance that should be associated with Runnable or Callable instances before |
| being dispatched to the target <code>Executor</code> instance.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink">Executor</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTargetExecutor()">getTargetExecutor</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the target Executor instance that will actually execute the subject-associated Runnable instances.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setTargetExecutor(java.util.concurrent.Executor)">setTargetExecutor</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink">Executor</a> targetExecutor)</code></th> |
| <td class="colLast"> |
| <div class="block">Sets target Executor instance that will actually execute the subject-associated Runnable instances.</div> |
| </td> |
| </tr> |
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| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></li> |
| </ul> |
| </li> |
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| </section> |
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| <h4>SubjectAwareExecutor</h4> |
| <pre>public <a href="../../../../src-html/org/apache/shiro/concurrent/SubjectAwareExecutor.html#line.63">SubjectAwareExecutor</a>()</pre> |
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| <h4>SubjectAwareExecutor</h4> |
| <pre>public <a href="../../../../src-html/org/apache/shiro/concurrent/SubjectAwareExecutor.html#line.66">SubjectAwareExecutor</a>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink">Executor</a> targetExecutor)</pre> |
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| <a id="getTargetExecutor()"> |
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| <h4>getTargetExecutor</h4> |
| <pre class="methodSignature">public <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink">Executor</a> <a href="../../../../src-html/org/apache/shiro/concurrent/SubjectAwareExecutor.html#line.78">getTargetExecutor</a>()</pre> |
| <div class="block">Returns the target Executor instance that will actually execute the subject-associated Runnable instances.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>target Executor instance that will actually execute the subject-associated Runnable instances.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="setTargetExecutor(java.util.concurrent.Executor)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setTargetExecutor</h4> |
| <pre class="methodSignature">public void <a href="../../../../src-html/org/apache/shiro/concurrent/SubjectAwareExecutor.html#line.88">setTargetExecutor</a>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink">Executor</a> targetExecutor)</pre> |
| <div class="block">Sets target Executor instance that will actually execute the subject-associated Runnable instances.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>targetExecutor</code> - the target Executor instance that will actually execute the subject-associated Runnable |
| instances.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getSubject()"> |
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| </a> |
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| <li class="blockList"> |
| <h4>getSubject</h4> |
| <pre class="methodSignature">protected <a href="../subject/Subject.html" title="interface in org.apache.shiro.subject">Subject</a> <a href="../../../../src-html/org/apache/shiro/concurrent/SubjectAwareExecutor.html#line.100">getSubject</a>()</pre> |
| <div class="block">Returns the currently Subject instance that should be associated with Runnable or Callable instances before |
| being dispatched to the target <code>Executor</code> instance. This implementation merely defaults to returning |
| <code>SecurityUtils</code>.<a href="../SecurityUtils.html#getSubject()"><code>getSubject()</code></a>.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the currently Subject instance that should be associated with Runnable or Callable instances before |
| being dispatched to the target <code>Executor</code> instance.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="associateWithSubject(java.lang.Runnable)"> |
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| </a> |
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| <h4>associateWithSubject</h4> |
| <pre class="methodSignature">protected <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Runnable</a> <a href="../../../../src-html/org/apache/shiro/concurrent/SubjectAwareExecutor.html#line.115">associateWithSubject</a>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Runnable</a> r)</pre> |
| <div class="block">Utility method for subclasses to associate the argument <code>Runnable</code> with the currently executing subject |
| and then return the associated Runnable. The default implementation merely defaults to |
| <pre> |
| Subject subject = <a href="#getSubject()"><code>getSubject()</code></a>; |
| return subject.<a href="../subject/Subject.html#associateWith(java.lang.Runnable)"><code>associateWith(r)</code></a>; |
| </pre></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>r</code> - the argument runnable to be associated with the current subject</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the associated runnable instance reflecting the current subject</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="execute(java.lang.Runnable)"> |
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| <h4>execute</h4> |
| <pre class="methodSignature">public void <a href="../../../../src-html/org/apache/shiro/concurrent/SubjectAwareExecutor.html#line.127">execute</a>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Runnable</a> command)</pre> |
| <div class="block">Executes the specified runnable by first associating it with the currently executing <code>Subject</code> and then |
| dispatches the associated Runnable to the underlying target <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink"><code>Executor</code></a> instance.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true#execute(java.lang.Runnable)" title="class or interface in java.util.concurrent" class="externalLink">execute</a></code> in interface <code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent" class="externalLink">Executor</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>command</code> - the runnable to associate with the currently executing subject and then to execute via the target |
| <code>Executor</code> instance.</dd> |
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