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| <div class="subTitle">org.apache.ignite.cache.affinity</div> |
| <h2 title="Interface CacheAffinity" class="title">Interface CacheAffinity<span class='angle_bracket'><</span>K<span class='angle_bracket'>></span></h2> |
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| <pre>public interface <span class="strong">CacheAffinity<span class='angle_bracket'><</span>K<span class='angle_bracket'>></span></span></pre> |
| <div class="block">Provides affinity information to detect which node is primary and which nodes are |
| backups for a partitioned cache. You can get an instance of this interface by calling |
| <code>Cache.affinity()</code> method. |
| <p> |
| Mapping of a key to a node is a three-step operation. First step will get an affinity key for given key |
| using <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinityKeyMapper.html" title="interface in org.apache.ignite.cache.affinity"><code>CacheAffinityKeyMapper</code></a>. If mapper is not specified, the original key will be used. Second step |
| will map affinity key to partition using <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html#partition(java.lang.Object)"><code>CacheAffinityFunction.partition(Object)</code></a> method. Third step |
| will map obtained partition to nodes for current grid topology version. |
| <p> |
| Interface provides various <code>'mapKeysToNodes(..)'</code> methods which provide node affinity mapping for |
| given keys. All <code>'mapKeysToNodes(..)'</code> methods are not transactional and will not enlist |
| keys into ongoing transaction.</div> |
| </li> |
| </ul> |
| </div> |
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| <h3>Method Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <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><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#affinityKey(K)">affinityKey</a></strong>(<a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</code> |
| <div class="block">Maps passed in key to a key which will be used for node affinity.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>int[]</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#allPartitions(org.apache.ignite.cluster.ClusterNode)">allPartitions</a></strong>(<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> n)</code> |
| <div class="block">Gets partition ids for which nodes of the given projection has ownership |
| (either primary or backup).</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>int[]</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#backupPartitions(org.apache.ignite.cluster.ClusterNode)">backupPartitions</a></strong>(<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> n)</code> |
| <div class="block">Gets partition ids for which nodes of the given projection has backup |
| ownership.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#isBackup(org.apache.ignite.cluster.ClusterNode, K)">isBackup</a></strong>(<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> n, |
| <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</code> |
| <div class="block">Returns <code>true</code> if local node is one of the backup nodes for given key.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#isPrimary(org.apache.ignite.cluster.ClusterNode, K)">isPrimary</a></strong>(<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> n, |
| <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</code> |
| <div class="block">Returns <code>true</code> if given node is the primary node for given key.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#isPrimaryOrBackup(org.apache.ignite.cluster.ClusterNode, K)">isPrimaryOrBackup</a></strong>(<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> n, |
| <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</code> |
| <div class="block">Returns <code>true</code> if local node is primary or one of the backup nodes |
| |
| This method is essentially equivalent to calling |
| <i>"<a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#isPrimary(org.apache.ignite.cluster.ClusterNode, K)"><code>isPrimary(org.apache.ignite.cluster.ClusterNode, Object)</code></a> || |
| <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#isBackup(org.apache.ignite.cluster.ClusterNode, K)"><code>isBackup(org.apache.ignite.cluster.ClusterNode, Object)</code></a>)"</i>, |
| however it is more efficient as it makes both checks at once.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><span class='angle_bracket'><</span><a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a>,<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a><span class='angle_bracket'>></span><span class='angle_bracket'>></span></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#mapKeysToNodes(java.util.Collection)">mapKeysToNodes</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span>? extends <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a><span class='angle_bracket'>></span> keys)</code> |
| <div class="block">This method provides ability to detect which keys are mapped to which nodes.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#mapKeyToNode(K)">mapKeyToNode</a></strong>(<a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</code> |
| <div class="block">This method provides ability to detect to which primary node the given key |
| is mapped.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span><a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#mapKeyToPrimaryAndBackups(K)">mapKeyToPrimaryAndBackups</a></strong>(<a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</code> |
| <div class="block">Gets primary and backup nodes for the key.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><span class='angle_bracket'><</span><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>,<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#mapPartitionsToNodes(java.util.Collection)">mapPartitionsToNodes</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a><span class='angle_bracket'>></span> parts)</code> |
| <div class="block">Gets primary nodes for the given partitions.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#mapPartitionToNode(int)">mapPartitionToNode</a></strong>(int part)</code> |
| <div class="block">Gets primary node for the given partition.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span><a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#mapPartitionToPrimaryAndBackups(int)">mapPartitionToPrimaryAndBackups</a></strong>(int part)</code> |
| <div class="block">Gets primary and backup nodes for partition.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#partition(K)">partition</a></strong>(<a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</code> |
| <div class="block">Gets partition id for the given key.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#partitions()">partitions</a></strong>()</code> |
| <div class="block">Gets number of partitions in cache according to configured affinity function.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>int[]</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#primaryPartitions(org.apache.ignite.cluster.ClusterNode)">primaryPartitions</a></strong>(<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> n)</code> |
| <div class="block">Gets partition ids for which nodes of the given projection has primary |
| ownership.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
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| <h3>Method Detail</h3> |
| <a name="partitions()"> |
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| <h4>partitions</h4> |
| <pre>int partitions()</pre> |
| <div class="block">Gets number of partitions in cache according to configured affinity function.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Number of cache partitions.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity"><code>CacheAffinityFunction</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#getAffinity()"><code>CacheConfiguration.getAffinity()</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#setAffinity(org.apache.ignite.cache.affinity.CacheAffinityFunction)"><code>CacheConfiguration.setAffinity(CacheAffinityFunction)</code></a></dd></dl> |
| </li> |
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| <a name="partition(java.lang.Object)"> |
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| <h4>partition</h4> |
| <pre>int partition(<a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</pre> |
| <div class="block">Gets partition id for the given key.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>key</code> - Key to get partition id for.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Partition id.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity"><code>CacheAffinityFunction</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#getAffinity()"><code>CacheConfiguration.getAffinity()</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#setAffinity(org.apache.ignite.cache.affinity.CacheAffinityFunction)"><code>CacheConfiguration.setAffinity(CacheAffinityFunction)</code></a></dd></dl> |
| </li> |
| </ul> |
| <a name="isPrimary(org.apache.ignite.cluster.ClusterNode,java.lang.Object)"> |
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| </a><a name="isPrimary(org.apache.ignite.cluster.ClusterNode, K)"> |
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| <h4>isPrimary</h4> |
| <pre>boolean isPrimary(<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> n, |
| <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</pre> |
| <div class="block">Returns <code>true</code> if given node is the primary node for given key.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>n</code> - Node to check.</dd><dd><code>key</code> - Key to check.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd><code>True</code> if local node is the primary node for given key.</dd></dl> |
| </li> |
| </ul> |
| <a name="isBackup(org.apache.ignite.cluster.ClusterNode,java.lang.Object)"> |
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| <h4>isBackup</h4> |
| <pre>boolean isBackup(<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> n, |
| <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</pre> |
| <div class="block">Returns <code>true</code> if local node is one of the backup nodes for given key.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>n</code> - Node to check.</dd><dd><code>key</code> - Key to check.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd><code>True</code> if local node is one of the backup nodes for given key.</dd></dl> |
| </li> |
| </ul> |
| <a name="isPrimaryOrBackup(org.apache.ignite.cluster.ClusterNode,java.lang.Object)"> |
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| <h4>isPrimaryOrBackup</h4> |
| <pre>boolean isPrimaryOrBackup(<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> n, |
| <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</pre> |
| <div class="block">Returns <code>true</code> if local node is primary or one of the backup nodes |
| <p> |
| This method is essentially equivalent to calling |
| <i>"<a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#isPrimary(org.apache.ignite.cluster.ClusterNode, K)"><code>isPrimary(org.apache.ignite.cluster.ClusterNode, Object)</code></a> || |
| <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html#isBackup(org.apache.ignite.cluster.ClusterNode, K)"><code>isBackup(org.apache.ignite.cluster.ClusterNode, Object)</code></a>)"</i>, |
| however it is more efficient as it makes both checks at once.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>n</code> - Node to check.</dd><dd><code>key</code> - Key to check.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd><code>True</code> if local node is primary or backup for given key.</dd></dl> |
| </li> |
| </ul> |
| <a name="primaryPartitions(org.apache.ignite.cluster.ClusterNode)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>primaryPartitions</h4> |
| <pre>int[] primaryPartitions(<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> n)</pre> |
| <div class="block">Gets partition ids for which nodes of the given projection has primary |
| ownership. |
| <p> |
| Note that since <a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster"><code>ClusterNode</code></a> implements <a href="../../../../../org/apache/ignite/cluster/ClusterGroup.html" title="interface in org.apache.ignite.cluster"><code>ClusterGroup</code></a>, |
| to find out primary partitions for a single node just pass |
| a single node into this method. |
| <p> |
| This method may return an empty array if none of nodes in the projection |
| have nearOnly disabled.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>n</code> - Grid node.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Partition ids for which given projection has primary ownership.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity"><code>CacheAffinityFunction</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#getAffinity()"><code>CacheConfiguration.getAffinity()</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#setAffinity(org.apache.ignite.cache.affinity.CacheAffinityFunction)"><code>CacheConfiguration.setAffinity(CacheAffinityFunction)</code></a></dd></dl> |
| </li> |
| </ul> |
| <a name="backupPartitions(org.apache.ignite.cluster.ClusterNode)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>backupPartitions</h4> |
| <pre>int[] backupPartitions(<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> n)</pre> |
| <div class="block">Gets partition ids for which nodes of the given projection has backup |
| ownership. Note that you can find a back up at a certain level, e.g. |
| <code>first</code> backup or <code>third</code> backup by specifying the |
| <code>'levels</code> parameter. If no <code>'level'</code> is specified then |
| all backup partitions are returned. |
| <p> |
| Note that since <a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster"><code>ClusterNode</code></a> implements <a href="../../../../../org/apache/ignite/cluster/ClusterGroup.html" title="interface in org.apache.ignite.cluster"><code>ClusterGroup</code></a>, |
| to find out backup partitions for a single node, just pass that single |
| node into this method. |
| <p> |
| This method may return an empty array if none of nodes in the projection |
| have nearOnly disabled.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>n</code> - Grid node.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Partition ids for which given projection has backup ownership.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity"><code>CacheAffinityFunction</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#getAffinity()"><code>CacheConfiguration.getAffinity()</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#setAffinity(org.apache.ignite.cache.affinity.CacheAffinityFunction)"><code>CacheConfiguration.setAffinity(CacheAffinityFunction)</code></a></dd></dl> |
| </li> |
| </ul> |
| <a name="allPartitions(org.apache.ignite.cluster.ClusterNode)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>allPartitions</h4> |
| <pre>int[] allPartitions(<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> n)</pre> |
| <div class="block">Gets partition ids for which nodes of the given projection has ownership |
| (either primary or backup). |
| <p> |
| Note that since <a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster"><code>ClusterNode</code></a> implements <a href="../../../../../org/apache/ignite/cluster/ClusterGroup.html" title="interface in org.apache.ignite.cluster"><code>ClusterGroup</code></a>, |
| to find out all partitions for a single node, just pass that single |
| node into this method. |
| <p> |
| This method may return an empty array if none of nodes in the projection |
| have nearOnly disabled.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>n</code> - Grid node.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Partition ids for which given projection has ownership.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity"><code>CacheAffinityFunction</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#getAffinity()"><code>CacheConfiguration.getAffinity()</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#setAffinity(org.apache.ignite.cache.affinity.CacheAffinityFunction)"><code>CacheConfiguration.setAffinity(CacheAffinityFunction)</code></a></dd></dl> |
| </li> |
| </ul> |
| <a name="affinityKey(java.lang.Object)"> |
| <!-- --> |
| </a><a name="affinityKey(K)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>affinityKey</h4> |
| <pre><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> affinityKey(<a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</pre> |
| <div class="block">Maps passed in key to a key which will be used for node affinity. The affinity |
| key may be different from actual key if some field in the actual key was |
| designated for affinity mapping via <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinityKeyMapped.html" title="annotation in org.apache.ignite.cache.affinity"><code>CacheAffinityKeyMapped</code></a> annotation |
| or if a custom <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinityKeyMapper.html" title="interface in org.apache.ignite.cache.affinity"><code>CacheAffinityKeyMapper</code></a> was configured.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>key</code> - Key to map.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Key to be used for node-to-affinity mapping (may be the same |
| key as passed in).</dd></dl> |
| </li> |
| </ul> |
| <a name="mapKeysToNodes(java.util.Collection)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>mapKeysToNodes</h4> |
| <pre><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><span class='angle_bracket'><</span><a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a>,<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a><span class='angle_bracket'>></span><span class='angle_bracket'>></span> mapKeysToNodes(@Nullable |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span>? extends <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a><span class='angle_bracket'>></span> keys)</pre> |
| <div class="block">This method provides ability to detect which keys are mapped to which nodes. |
| Use it to determine which nodes are storing which keys prior to sending |
| jobs that access these keys. |
| <p> |
| This method works as following: |
| <ul> |
| <li>For local caches it returns only local node mapped to all keys.</li> |
| <li> |
| For fully replicated caches <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity"><code>CacheAffinityFunction</code></a> is |
| used to determine which keys are mapped to which nodes. |
| </li> |
| <li>For partitioned caches, the returned map represents node-to-key affinity.</li> |
| </ul></div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>keys</code> - Keys to map to nodes.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Map of nodes to keys or empty map if there are no alive nodes for this cache.</dd></dl> |
| </li> |
| </ul> |
| <a name="mapKeyToNode(java.lang.Object)"> |
| <!-- --> |
| </a><a name="mapKeyToNode(K)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>mapKeyToNode</h4> |
| <pre>@Nullable |
| <a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> mapKeyToNode(<a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</pre> |
| <div class="block">This method provides ability to detect to which primary node the given key |
| is mapped. Use it to determine which nodes are storing which keys prior to sending |
| jobs that access these keys. |
| <p> |
| This method works as following: |
| <ul> |
| <li>For local caches it returns only local node ID.</li> |
| <li> |
| For fully replicated caches first node ID returned by <a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity"><code>CacheAffinityFunction</code></a> |
| is returned. |
| </li> |
| <li>For partitioned caches, primary node for the given key is returned.</li> |
| </ul></div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>key</code> - Keys to map to a node.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Primary node for the key or <code>null</code> if there are no alive nodes for this cache.</dd></dl> |
| </li> |
| </ul> |
| <a name="mapKeyToPrimaryAndBackups(java.lang.Object)"> |
| <!-- --> |
| </a><a name="mapKeyToPrimaryAndBackups(K)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>mapKeyToPrimaryAndBackups</h4> |
| <pre><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span><a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span> mapKeyToPrimaryAndBackups(<a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinity.html" title="type parameter in CacheAffinity">K</a> key)</pre> |
| <div class="block">Gets primary and backup nodes for the key. Note that primary node is always |
| first in the returned collection. |
| <p> |
| If there are only cache nodes in the projection with |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#getDistributionMode()"><code>CacheConfiguration.getDistributionMode()</code></a> property set to <code>NEAR_ONLY</code>, then this |
| method will return an empty collection.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>key</code> - Key to get affinity nodes for.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Collection of primary and backup nodes for the key with primary node |
| always first, or an empty collection if this projection contains only nodes with |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#getDistributionMode()"><code>CacheConfiguration.getDistributionMode()</code></a> property set to <code>NEAR_ONLY</code>.</dd></dl> |
| </li> |
| </ul> |
| <a name="mapPartitionToNode(int)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>mapPartitionToNode</h4> |
| <pre><a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> mapPartitionToNode(int part)</pre> |
| <div class="block">Gets primary node for the given partition.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>part</code> - Partition id.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Primary node for the given partition.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity"><code>CacheAffinityFunction</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#getAffinity()"><code>CacheConfiguration.getAffinity()</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#setAffinity(org.apache.ignite.cache.affinity.CacheAffinityFunction)"><code>CacheConfiguration.setAffinity(CacheAffinityFunction)</code></a></dd></dl> |
| </li> |
| </ul> |
| <a name="mapPartitionsToNodes(java.util.Collection)"> |
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| </a> |
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| <h4>mapPartitionsToNodes</h4> |
| <pre><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><span class='angle_bracket'><</span><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>,<a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span> mapPartitionsToNodes(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a><span class='angle_bracket'>></span> parts)</pre> |
| <div class="block">Gets primary nodes for the given partitions.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>parts</code> - Partition ids.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Mapping of given partitions to their primary nodes.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/ignite/cache/affinity/CacheAffinityFunction.html" title="interface in org.apache.ignite.cache.affinity"><code>CacheAffinityFunction</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#getAffinity()"><code>CacheConfiguration.getAffinity()</code></a>, |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#setAffinity(org.apache.ignite.cache.affinity.CacheAffinityFunction)"><code>CacheConfiguration.setAffinity(CacheAffinityFunction)</code></a></dd></dl> |
| </li> |
| </ul> |
| <a name="mapPartitionToPrimaryAndBackups(int)"> |
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| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>mapPartitionToPrimaryAndBackups</h4> |
| <pre><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span><a href="../../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span> mapPartitionToPrimaryAndBackups(int part)</pre> |
| <div class="block">Gets primary and backup nodes for partition. Note that primary node is always |
| first in the returned collection. |
| <p> |
| If there are only cache nodes in the projection with |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#getDistributionMode()"><code>CacheConfiguration.getDistributionMode()</code></a> property set to <code>NEAR_ONLY</code>, then this |
| method will return an empty collection.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>part</code> - Partition to get affinity nodes for.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Collection of primary and backup nodes for partition with primary node |
| always first, or an empty collection if this projection contains only nodes with |
| <a href="../../../../../org/apache/ignite/configuration/CacheConfiguration.html#getDistributionMode()"><code>CacheConfiguration.getDistributionMode()</code></a> property set to <code>NEAR_ONLY</code>.</dd></dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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| <p class="legalCopy"><small><table width="100%" border="0" cellspacing=0 cellpadding=0 style="padding: 5px"> <tr> <td> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <a target=_blank href="https://incubator.apache.org/projects/ignite.html"><nobr>2015 Copyright © Apache Software Foundation</nobr></a> </td> </tr> </tbody> </table> </td> <td width="100%" align="right" valign="center"> <a href="https://twitter.com/ApacheIgnite" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @ApacheIgnite</a> <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script> </td> </tr> <tr> <td colspan="2" valign="top" align="left"> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <b>Apache Ignite Fabric</b> </td> <td>: ver. <strong>1.0.0-RC3</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: March 24 2015 </td> </tr> </tbody> </table> </td> </tr> </table></small></p> |
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