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| <div class="subTitle">javax.cache.expiry</div> |
| <h2 title="Interface ExpiryPolicy" class="title">Interface ExpiryPolicy</h2> |
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| <dt>All Known Implementing Classes:</dt> |
| <dd><a href="../../../javax/cache/expiry/AccessedExpiryPolicy.html" title="class in javax.cache.expiry">AccessedExpiryPolicy</a>, <a href="../../../javax/cache/expiry/CreatedExpiryPolicy.html" title="class in javax.cache.expiry">CreatedExpiryPolicy</a>, <a href="../../../javax/cache/expiry/EternalExpiryPolicy.html" title="class in javax.cache.expiry">EternalExpiryPolicy</a>, <a href="../../../javax/cache/expiry/ModifiedExpiryPolicy.html" title="class in javax.cache.expiry">ModifiedExpiryPolicy</a>, <a href="../../../javax/cache/expiry/TouchedExpiryPolicy.html" title="class in javax.cache.expiry">TouchedExpiryPolicy</a></dd> |
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| <pre>public interface <span class="strong">ExpiryPolicy</span></pre> |
| <div class="block">Defines functions to determine when cache entries will expire based on |
| creation, access and modification operations. |
| <p> |
| Each of the functions return a new <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> that specifies the |
| amount of time that must pass before a cache entry is considered expired. |
| <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> has constants defined for useful durations.</div> |
| <dl><dt><span class="strong">Since:</span></dt> |
| <dd>1.0</dd> |
| <dt><span class="strong">Author:</span></dt> |
| <dd>Brian Oliver, Greg Luck</dd> |
| <dt><span class="strong">See Also:</span></dt><dd><a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a></dd></dl> |
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| <caption><span>Methods</span><span class="tabEnd"> </span></caption> |
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| <th class="colLast" scope="col">Method and Description</th> |
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| <td class="colFirst"><code><a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry">Duration</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../javax/cache/expiry/ExpiryPolicy.html#getExpiryForAccess()">getExpiryForAccess</a></strong>()</code> |
| <div class="block">Gets the <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> before an accessed Cache.Entry is |
| considered expired.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry">Duration</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../javax/cache/expiry/ExpiryPolicy.html#getExpiryForCreation()">getExpiryForCreation</a></strong>()</code> |
| <div class="block">Gets the <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> before a newly created Cache.Entry is considered |
| expired.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry">Duration</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../javax/cache/expiry/ExpiryPolicy.html#getExpiryForUpdate()">getExpiryForUpdate</a></strong>()</code> |
| <div class="block">Gets the <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> before an updated Cache.Entry is considered |
| expired.</div> |
| </td> |
| </tr> |
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| <a name="getExpiryForCreation()"> |
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| <h4>getExpiryForCreation</h4> |
| <pre><a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry">Duration</a> getExpiryForCreation()</pre> |
| <div class="block">Gets the <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> before a newly created Cache.Entry is considered |
| expired. |
| <p> |
| This method is called by a caching implementation after a Cache.Entry is |
| created, but before a Cache.Entry is added to a cache, to determine the |
| <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> before an entry expires. If a <a href="../../../javax/cache/expiry/Duration.html#ZERO"><code>Duration.ZERO</code></a> |
| is returned the new Cache.Entry is considered to be already expired and |
| will not be added to the Cache. |
| <p> |
| Should an exception occur while determining the Duration, an implementation |
| specific default <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> will be used.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>the new <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> before a created entry expires</dd></dl> |
| </li> |
| </ul> |
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| <h4>getExpiryForAccess</h4> |
| <pre><a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry">Duration</a> getExpiryForAccess()</pre> |
| <div class="block">Gets the <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> before an accessed Cache.Entry is |
| considered expired. |
| <p> |
| This method is called by a caching implementation after a Cache.Entry is |
| accessed to determine the <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> before an entry expires. If a |
| <a href="../../../javax/cache/expiry/Duration.html#ZERO"><code>Duration.ZERO</code></a> is returned a Cache.Entry will be |
| considered immediately expired. Returning <code>null</code> will result |
| in no change to the previously understood expiry <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a>. |
| <p> |
| Should an exception occur while determining the Duration, an implementation |
| specific default Duration will be used.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>the new <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> before an accessed entry expires</dd></dl> |
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| <h4>getExpiryForUpdate</h4> |
| <pre><a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry">Duration</a> getExpiryForUpdate()</pre> |
| <div class="block">Gets the <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> before an updated Cache.Entry is considered |
| expired. |
| <p> |
| This method is called by the caching implementation after a Cache.Entry is |
| updated to determine the <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> before the updated entry expires. |
| If a <a href="../../../javax/cache/expiry/Duration.html#ZERO"><code>Duration.ZERO</code></a> is returned a Cache.Entry is considered |
| immediately expired. Returning <code>null</code> will result in no change |
| to the previously understood expiry <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a>. |
| <p> |
| Should an exception occur while determining the Duration, an implementation |
| specific default Duration will be used.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>the new <a href="../../../javax/cache/expiry/Duration.html" title="class in javax.cache.expiry"><code>Duration</code></a> before an updated entry expires</dd></dl> |
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