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| <div class="subTitle">org.apache.drill.common</div> |
| <h2 title="Class AutoCloseablePointer" class="title">Class AutoCloseablePointer<T extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a>></h2> |
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| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.drill.common.AutoCloseablePointer<T></li> |
| </ul> |
| </li> |
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| <div class="description"> |
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| <dl> |
| <dt><span class="paramLabel">Type Parameters:</span></dt> |
| <dd><code>T</code> - type of the pointer</dd> |
| </dl> |
| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public final class <span class="typeNameLabel">AutoCloseablePointer<T extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a>></span> |
| 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">Object</a> |
| implements <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></pre> |
| <div class="block">A class similar to Pointer<>, but with features unique to holding |
| AutoCloseable pointers. The AutoCloseablePointer<> must be closed |
| when it will no longer be used. |
| |
| <p>If you're familiar with C++/Boost's shared_ptr<>, you might recognize |
| some of the features here.</p></div> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/drill/common/AutoCloseablePointer.html#AutoCloseablePointer--">AutoCloseablePointer</a></span>()</code> |
| <div class="block">Constructor for a null-valued pointer.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/drill/common/AutoCloseablePointer.html#AutoCloseablePointer-T-">AutoCloseablePointer</a></span>(<a href="../../../../org/apache/drill/common/AutoCloseablePointer.html" title="type parameter in AutoCloseablePointer">T</a> pointer)</code> |
| <div class="block">Constructor for a pointer value.</div> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <td class="colFirst"><code><a href="../../../../org/apache/drill/common/AutoCloseablePointer.html" title="type parameter in AutoCloseablePointer">T</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/drill/common/AutoCloseablePointer.html#adopt--">adopt</a></span>()</code> |
| <div class="block">The caller adopts the pointer; the holder is set to |
| null, and will no longer be responsible for close()ing this pointer.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/drill/common/AutoCloseablePointer.html#assign-T-">assign</a></span>(<a href="../../../../org/apache/drill/common/AutoCloseablePointer.html" title="type parameter in AutoCloseablePointer">T</a> newP)</code> |
| <div class="block">Assign a new pointer to this holder.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/drill/common/AutoCloseablePointer.html#assignNoChecked-T-">assignNoChecked</a></span>(<a href="../../../../org/apache/drill/common/AutoCloseablePointer.html" title="type parameter in AutoCloseablePointer">T</a> newP)</code> |
| <div class="block">Like <a href="../../../../org/apache/drill/common/AutoCloseablePointer.html#assign-T-"><code>assign(AutoCloseable)</code></a>, except that any exception thrown |
| by closing the previously held pointer is wrapped with (an unchecked) |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/RuntimeException.html?is-external=true" title="class or interface in java.lang"><code>RuntimeException</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/drill/common/AutoCloseablePointer.html#close--">close</a></span>()</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/drill/common/AutoCloseablePointer.html" title="type parameter in AutoCloseablePointer">T</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/drill/common/AutoCloseablePointer.html#get--">get</a></span>()</code> |
| <div class="block">Get the raw pointer out for use.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
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| <!-- --> |
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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">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">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">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">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">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">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">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">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">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">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">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">wait</a></code></li> |
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| <a name="AutoCloseablePointer--"> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>AutoCloseablePointer</h4> |
| <pre>public AutoCloseablePointer()</pre> |
| <div class="block">Constructor for a null-valued pointer.</div> |
| </li> |
| </ul> |
| <a name="AutoCloseablePointer-java.lang.AutoCloseable-"> |
| <!-- --> |
| </a><a name="AutoCloseablePointer-T-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>AutoCloseablePointer</h4> |
| <pre>public AutoCloseablePointer(<a href="../../../../org/apache/drill/common/AutoCloseablePointer.html" title="type parameter in AutoCloseablePointer">T</a> pointer)</pre> |
| <div class="block">Constructor for a pointer value.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>pointer</code> - the initial pointer value</dd> |
| </dl> |
| </li> |
| </ul> |
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| </ul> |
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| <h3>Method Detail</h3> |
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| <h4>close</h4> |
| <pre>public void close() |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true#close--" title="class or interface in java.lang">close</a></code> in interface <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd> |
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| <h4>get</h4> |
| <pre>public <a href="../../../../org/apache/drill/common/AutoCloseablePointer.html" title="type parameter in AutoCloseablePointer">T</a> get()</pre> |
| <div class="block">Get the raw pointer out for use.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the raw pointer</dd> |
| </dl> |
| </li> |
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| <a name="adopt--"> |
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| <h4>adopt</h4> |
| <pre>public <a href="../../../../org/apache/drill/common/AutoCloseablePointer.html" title="type parameter in AutoCloseablePointer">T</a> adopt()</pre> |
| <div class="block">The caller adopts the pointer; the holder is set to |
| null, and will no longer be responsible for close()ing this pointer.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the pointer being adopted; may be null</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="assign-java.lang.AutoCloseable-"> |
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| </a><a name="assign-T-"> |
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| <h4>assign</h4> |
| <pre>public void assign(<a href="../../../../org/apache/drill/common/AutoCloseablePointer.html" title="type parameter in AutoCloseablePointer">T</a> newP) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre> |
| <div class="block">Assign a new pointer to this holder. Any currently held pointer |
| will first be closed. If closing the currently held pointer throws |
| an exception, the new pointer is still assigned, and the holder must still |
| be closed to close that. |
| |
| <p>This makes it convenient to assign a new pointer without having to check |
| for a previous value and worry about cleaning it up; this does all that.</p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>newP</code> - the new pointer to hold</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code> - any exception thrown by closing the currently held |
| pointer</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>assignNoChecked</h4> |
| <pre>public void assignNoChecked(<a href="../../../../org/apache/drill/common/AutoCloseablePointer.html" title="type parameter in AutoCloseablePointer">T</a> newP)</pre> |
| <div class="block">Like <a href="../../../../org/apache/drill/common/AutoCloseablePointer.html#assign-T-"><code>assign(AutoCloseable)</code></a>, except that any exception thrown |
| by closing the previously held pointer is wrapped with (an unchecked) |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/RuntimeException.html?is-external=true" title="class or interface in java.lang"><code>RuntimeException</code></a>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>newP</code> - the new pointer to hold</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
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