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| <div class="subTitle">org.apache.ignite.cache.affinity</div> |
| <h2 title="Class AffinityKey" class="title">Class AffinityKey<K></h2> |
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| <ul class="inheritance"> |
| <li><a href="http://docs.oracle.com/javase/7/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.ignite.cache.affinity.AffinityKey<K></li> |
| </ul> |
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| <dt>All Implemented Interfaces:</dt> |
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| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../org/apache/ignite/cache/affinity/AffinityUuid.html" title="class in org.apache.ignite.cache.affinity">AffinityUuid</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public class <span class="strong">AffinityKey<K></span> |
| extends <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> |
| implements <a href="http://docs.oracle.com/javase/7/docs/api/java/io/Externalizable.html?is-external=true" title="class or interface in java.io">Externalizable</a></pre> |
| <div class="block">Optional wrapper for cache keys to provide support |
| for custom affinity mapping. The value returned by |
| <a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#affinityKey(java.lang.Object)"><code>affinityKey(Object)</code></a> method will be used for key-to-node |
| affinity. |
| <p> |
| Note that the <a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#equals(java.lang.Object)"><code>equals(Object)</code></a> and <a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#hashCode()"><code>hashCode()</code></a> methods |
| delegate directly to the wrapped cache key provided by <a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#key()"><code>key()</code></a> |
| method. |
| <p> |
| This class is optional and does not have to be used. It only provides |
| extra convenience whenever custom affinity mapping is required. Here is |
| an example of how <code>Person</code> objects can be collocated with |
| <code>Company</code> objects they belong to: |
| <pre name="code" class="java"> |
| Object personKey = new AffinityKey(myPersonId, myCompanyId); |
| |
| // Both, the company and the person objects will be cached on the same node. |
| cache.put(myCompanyId, new Company(..)); |
| cache.put(personKey, new Person(..)); |
| </pre> |
| <p> |
| For more information and examples of cache affinity refer to |
| <a href="../../../../../org/apache/ignite/cache/affinity/AffinityKeyMapper.html" title="interface in org.apache.ignite.cache.affinity"><code>AffinityKeyMapper</code></a> and <a href="../../../../../org/apache/ignite/cache/affinity/AffinityKeyMapped.html" title="annotation in org.apache.ignite.cache.affinity"><code>@AffinityKeyMapped</code></a> |
| documentation.</div> |
| <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/ignite/cache/affinity/AffinityKeyMapped.html" title="annotation in org.apache.ignite.cache.affinity"><code>AffinityKeyMapped</code></a>, |
| <a href="../../../../../org/apache/ignite/cache/affinity/AffinityKeyMapper.html" title="interface in org.apache.ignite.cache.affinity"><code>AffinityKeyMapper</code></a>, |
| <a href="../../../../../org/apache/ignite/cache/affinity/AffinityFunction.html" title="interface in org.apache.ignite.cache.affinity"><code>AffinityFunction</code></a>, |
| <a href="../../../../../serialized-form.html#org.apache.ignite.cache.affinity.AffinityKey">Serialized Form</a></dd></dl> |
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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><strong><a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#AffinityKey()">AffinityKey</a></strong>()</code> |
| <div class="block">Empty constructor.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#AffinityKey(K)">AffinityKey</a></strong>(<a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html" title="type parameter in AffinityKey">K</a> key)</code> |
| <div class="block">Initializes key wrapper for a given key.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#AffinityKey(K,%20java.lang.Object)">AffinityKey</a></strong>(<a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html" title="type parameter in AffinityKey">K</a> key, |
| <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> affKey)</code> |
| <div class="block">Initializes key together with its affinity key counter-part.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
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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><T> T</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#affinityKey()">affinityKey</a></strong>()</code> |
| <div class="block">Gets affinity key to use for affinity mapping.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#affinityKey(java.lang.Object)">affinityKey</a></strong>(<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> affKey)</code> |
| <div class="block">Sets affinity key to use for affinity mapping.</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/AffinityKey.html#equals(java.lang.Object)">equals</a></strong>(<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> obj)</code> |
| <div class="block">Equality check which delegates to the underlying key equality.</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/AffinityKey.html#hashCode()">hashCode</a></strong>()</code> |
| <div class="block">Hash code implementation which delegates to the underlying <a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#key()"><code>key()</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html" title="type parameter in AffinityKey">K</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#key()">key</a></strong>()</code> |
| <div class="block">Gets wrapped key.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#key(K)">key</a></strong>(<a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html" title="type parameter in AffinityKey">K</a> key)</code> |
| <div class="block">Sets wrapped key.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#readExternal(java.io.ObjectInput)">readExternal</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/ObjectInput.html?is-external=true" title="class or interface in java.io">ObjectInput</a> in)</code></td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#toString()">toString</a></strong>()</code></td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#writeExternal(java.io.ObjectOutput)">writeExternal</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/ObjectOutput.html?is-external=true" title="class or interface in java.io">ObjectOutput</a> out)</code></td> |
| </tr> |
| </table> |
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| <li class="blockList"><a name="methods_inherited_from_class_java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.<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></h3> |
| <code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long,%20int)" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| <h3>Constructor Detail</h3> |
| <a name="AffinityKey()"> |
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| <h4>AffinityKey</h4> |
| <pre>public AffinityKey()</pre> |
| <div class="block">Empty constructor.</div> |
| </li> |
| </ul> |
| <a name="AffinityKey(java.lang.Object)"> |
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| </a><a name="AffinityKey(K)"> |
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| <h4>AffinityKey</h4> |
| <pre>public AffinityKey(<a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html" title="type parameter in AffinityKey">K</a> key)</pre> |
| <div class="block">Initializes key wrapper for a given key. If affinity key |
| is not initialized, then this key will be used for affinity.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>key</code> - Key.</dd></dl> |
| </li> |
| </ul> |
| <a name="AffinityKey(java.lang.Object,java.lang.Object)"> |
| <!-- --> |
| </a><a name="AffinityKey(K, java.lang.Object)"> |
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| <h4>AffinityKey</h4> |
| <pre>public AffinityKey(<a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html" title="type parameter in AffinityKey">K</a> key, |
| <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> affKey)</pre> |
| <div class="block">Initializes key together with its affinity key counter-part.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>key</code> - Key.</dd><dd><code>affKey</code> - Affinity key.</dd></dl> |
| </li> |
| </ul> |
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| <h4>key</h4> |
| <pre>public <a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html" title="type parameter in AffinityKey">K</a> key()</pre> |
| <div class="block">Gets wrapped key.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Wrapped key.</dd></dl> |
| </li> |
| </ul> |
| <a name="key(java.lang.Object)"> |
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| </a><a name="key(K)"> |
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| <h4>key</h4> |
| <pre>public void key(<a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html" title="type parameter in AffinityKey">K</a> key)</pre> |
| <div class="block">Sets wrapped key.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>key</code> - Wrapped key.</dd></dl> |
| </li> |
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| <a name="affinityKey()"> |
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| <h4>affinityKey</h4> |
| <pre>public <T> T affinityKey()</pre> |
| <div class="block">Gets affinity key to use for affinity mapping. If affinity key is not provided, |
| then <code>key</code> value will be returned. |
| <p> |
| This method is annotated with <a href="../../../../../org/apache/ignite/cache/affinity/AffinityKeyMapped.html" title="annotation in org.apache.ignite.cache.affinity"><code>AffinityKeyMapped</code></a> and will be picked up |
| by <code>GridCacheDefaultAffinityKeyMapper</code> automatically.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Affinity key to use for affinity mapping.</dd></dl> |
| </li> |
| </ul> |
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| <h4>affinityKey</h4> |
| <pre>public void affinityKey(<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> affKey)</pre> |
| <div class="block">Sets affinity key to use for affinity mapping. If affinity key is not provided, |
| then <code>key</code> value will be returned.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>affKey</code> - Affinity key to use for affinity mapping.</dd></dl> |
| </li> |
| </ul> |
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| <h4>writeExternal</h4> |
| <pre>public void writeExternal(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/ObjectOutput.html?is-external=true" title="class or interface in java.io">ObjectOutput</a> out) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Externalizable.html?is-external=true#writeExternal(java.io.ObjectOutput)" title="class or interface in java.io">writeExternal</a></code> in interface <code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Externalizable.html?is-external=true" title="class or interface in java.io">Externalizable</a></code></dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd></dl> |
| </li> |
| </ul> |
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| <h4>readExternal</h4> |
| <pre>public void readExternal(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/ObjectInput.html?is-external=true" title="class or interface in java.io">ObjectInput</a> in) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</a></pre> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Externalizable.html?is-external=true#readExternal(java.io.ObjectInput)" title="class or interface in java.io">readExternal</a></code> in interface <code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Externalizable.html?is-external=true" title="class or interface in java.io">Externalizable</a></code></dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</a></code></dd></dl> |
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| <h4>hashCode</h4> |
| <pre>public int hashCode()</pre> |
| <div class="block">Hash code implementation which delegates to the underlying <a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html#key()"><code>key()</code></a>. Note, however, |
| that different subclasses of <a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html" title="class in org.apache.ignite.cache.affinity"><code>AffinityKey</code></a> will produce different hash codes. |
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| <dt><strong>Overrides:</strong></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a></code> in class <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></dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Hash code.</dd></dl> |
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| <h4>equals</h4> |
| <pre>public boolean equals(<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> obj)</pre> |
| <div class="block">Equality check which delegates to the underlying key equality. Note, however, that |
| different subclasses of <a href="../../../../../org/apache/ignite/cache/affinity/AffinityKey.html" title="class in org.apache.ignite.cache.affinity"><code>AffinityKey</code></a> will never be equal. |
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| Users should override this method if different behavior is desired.</div> |
| <dl> |
| <dt><strong>Overrides:</strong></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a></code> in class <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></dd> |
| <dt><span class="strong">Parameters:</span></dt><dd><code>obj</code> - Object to check for equality.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd><code>True</code> if objects are equal.</dd></dl> |
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| <h4>toString</h4> |
| <pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> toString()</pre> |
| <dl> |
| <dt><strong>Overrides:</strong></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a></code> in class <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></dd> |
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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://ignite.apache.org"><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>Ignite Fabric</b> </td> <td>: ver. <strong>1.7.0</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: August 1 2016 </td> </tr> </tbody> </table> </td> </tr> </table></small></p> |
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