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| <div class="subTitle">org.apache.ignite.cache.eviction</div> |
| <h2 title="Interface EvictableEntry" class="title">Interface EvictableEntry<K,V></h2> |
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| <dt>All Superinterfaces:</dt> |
| <dd>javax.cache.Cache.Entry<K,V></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public interface <span class="strong">EvictableEntry<K,V></span> |
| extends javax.cache.Cache.Entry<K,V></pre> |
| <div class="block">Evictable cache entry passed into <a href="../../../../../org/apache/ignite/cache/eviction/EvictionPolicy.html" title="interface in org.apache.ignite.cache.eviction"><code>EvictionPolicy</code></a>.</div> |
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| <caption><span>Methods</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><T> T</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/eviction/EvictableEntry.html#addMeta(T)">addMeta</a></strong>(T val)</code> |
| <div class="block">Adds a new metadata.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/eviction/EvictableEntry.html#evict()">evict</a></strong>()</code> |
| <div class="block">Evicts entry associated with given key from cache.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/eviction/EvictableEntry.html#isCached()">isCached</a></strong>()</code> |
| <div class="block">Checks whether entry is currently present in cache or not.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><T> T</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/eviction/EvictableEntry.html#meta()">meta</a></strong>()</code> |
| <div class="block">Gets metadata added by eviction policy.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><T> T</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/eviction/EvictableEntry.html#putMetaIfAbsent(T)">putMetaIfAbsent</a></strong>(T val)</code> |
| <div class="block">Adds given metadata value only if it was absent.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><T> T</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/eviction/EvictableEntry.html#removeMeta()">removeMeta</a></strong>()</code> |
| <div class="block">Removes metadata by name.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><T> boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/eviction/EvictableEntry.html#removeMeta(T)">removeMeta</a></strong>(T val)</code> |
| <div class="block">Removes metadata only if its current value is equal to <code>val</code> passed in.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><T> boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/eviction/EvictableEntry.html#replaceMeta(T,%20T)">replaceMeta</a></strong>(T curVal, |
| T newVal)</code> |
| <div class="block">Replaces given metadata with new <code>newVal</code> value only if its current value |
| is equal to <code>curVal</code>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/eviction/EvictableEntry.html#size()">size</a></strong>()</code> |
| <div class="block">Returns entry size in bytes.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods_inherited_from_class_javax.cache.Cache.Entry"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from interface javax.cache.Cache.Entry</h3> |
| <code>getKey, getValue, unwrap</code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
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| <h3>Method Detail</h3> |
| <a name="evict()"> |
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| </a> |
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| <li class="blockList"> |
| <h4>evict</h4> |
| <pre>boolean evict()</pre> |
| <div class="block">Evicts entry associated with given key from cache. Note, that entry will be evicted |
| only if it's not used (not participating in any locks or transactions).</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd><code>True</code> if entry could be evicted, <code>false</code> otherwise.</dd></dl> |
| </li> |
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| <a name="isCached()"> |
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| <h4>isCached</h4> |
| <pre>boolean isCached()</pre> |
| <div class="block">Checks whether entry is currently present in cache or not. If entry is not in |
| cache (e.g. has been removed) <code>false</code> is returned. In this case all |
| operations on this entry will cause creation of a new entry in cache.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd><code>True</code> if entry is in cache, <code>false</code> otherwise.</dd></dl> |
| </li> |
| </ul> |
| <a name="size()"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>size</h4> |
| <pre>int size()</pre> |
| <div class="block">Returns entry size in bytes.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>entry size in bytes.</dd></dl> |
| </li> |
| </ul> |
| <a name="meta()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>meta</h4> |
| <pre>@Nullable |
| <T> T meta()</pre> |
| <div class="block">Gets metadata added by eviction policy.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Metadata value or <code>null</code>.</dd></dl> |
| </li> |
| </ul> |
| <a name="addMeta(java.lang.Object)"> |
| <!-- --> |
| </a><a name="addMeta(T)"> |
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| <li class="blockList"> |
| <h4>addMeta</h4> |
| <pre>@Nullable |
| <T> T addMeta(T val)</pre> |
| <div class="block">Adds a new metadata.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>val</code> - Metadata value.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Metadata previously added, or |
| <code>null</code> if there was none.</dd></dl> |
| </li> |
| </ul> |
| <a name="putMetaIfAbsent(java.lang.Object)"> |
| <!-- --> |
| </a><a name="putMetaIfAbsent(T)"> |
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| <h4>putMetaIfAbsent</h4> |
| <pre>@Nullable |
| <T> T putMetaIfAbsent(T val)</pre> |
| <div class="block">Adds given metadata value only if it was absent.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>val</code> - Value to add if it's not attached already.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd><code>null</code> if new value was put, or current value if put didn't happen.</dd></dl> |
| </li> |
| </ul> |
| <a name="replaceMeta(java.lang.Object,java.lang.Object)"> |
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| </a><a name="replaceMeta(T, T)"> |
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| <h4>replaceMeta</h4> |
| <pre><T> boolean replaceMeta(T curVal, |
| T newVal)</pre> |
| <div class="block">Replaces given metadata with new <code>newVal</code> value only if its current value |
| is equal to <code>curVal</code>. Otherwise, it is no-op.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>curVal</code> - Current value to check.</dd><dd><code>newVal</code> - New value.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd><code>true</code> if replacement occurred, <code>false</code> otherwise.</dd></dl> |
| </li> |
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| <h4>removeMeta</h4> |
| <pre>@Nullable |
| <T> T removeMeta()</pre> |
| <div class="block">Removes metadata by name.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Value of removed metadata or <code>null</code>.</dd></dl> |
| </li> |
| </ul> |
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| </a><a name="removeMeta(T)"> |
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| <h4>removeMeta</h4> |
| <pre><T> boolean removeMeta(T val)</pre> |
| <div class="block">Removes metadata only if its current value is equal to <code>val</code> passed in.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>val</code> - Value to compare.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd><code>True</code> if value was removed, <code>false</code> otherwise.</dd></dl> |
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