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    <title>Class AffinityKeyMappedAttribute
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            <article class="content wrap" id="_content" data-uid="Apache.Ignite.Core.Cache.Affinity.AffinityKeyMappedAttribute">
  
  
  <h1 id="Apache_Ignite_Core_Cache_Affinity_AffinityKeyMappedAttribute" data-uid="Apache.Ignite.Core.Cache.Affinity.AffinityKeyMappedAttribute" class="text-break">Class AffinityKeyMappedAttribute
  </h1>
  <div class="markdown level0 summary"><p>Specifies cache key field to be used to determine a node on which given cache key will be stored.
Only one field or property can be marked with this attribute.
<p>
This attribute is an alternative to <a class="xref" href="Apache.Ignite.Core.Binary.BinaryTypeConfiguration.html#Apache_Ignite_Core_Binary_BinaryTypeConfiguration_AffinityKeyFieldName">AffinityKeyFieldName</a> setting.
This attribute has lower priority than <a class="xref" href="Apache.Ignite.Core.Binary.BinaryTypeConfiguration.html#Apache_Ignite_Core_Binary_BinaryTypeConfiguration_AffinityKeyFieldName">AffinityKeyFieldName</a> setting.
<p>
One of the major use cases for this attribute is the routing of grid computations
to the nodes where the data for this computation is cached, the concept otherwise known as 
Colocation Of Computations And Data.
<p>
For example, if a Person object is always accessed together with a Company object for which this person 
is an employee, then for better performance and scalability it makes sense to colocate Person objects 
together with their Company object when storing them in cache. 
To achieve that, cache key used to cache Person objects should have a field or property marked with
<a class="xref" href="Apache.Ignite.Core.Cache.Affinity.AffinityKeyMappedAttribute.html">AffinityKeyMappedAttribute</a> attribute, which will provide the value of 
the company key for which that person works.</p>
</div>
  <div class="markdown level0 conceptual"></div>
  <div class="inheritance">
    <h5>Inheritance</h5>
    <div class="level0"><span class="xref">System.Object</span></div>
    <div class="level1"><span class="xref">System.Attribute</span></div>
    <div class="level2"><span class="xref">AffinityKeyMappedAttribute</span></div>
  </div>
  <div classs="implements">
    <h5>Implements</h5>
    <div><span class="xref">System.Runtime.InteropServices._Attribute</span></div>
  </div>
  <div class="inheritedMembers">
    <h5>Inherited Members</h5>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo, System.Type)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo, System.Type, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.IsDefined(System.Reflection.MemberInfo, System.Type)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.IsDefined(System.Reflection.MemberInfo, System.Type, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.MemberInfo, System.Type)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.MemberInfo, System.Type, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.ParameterInfo)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.ParameterInfo, System.Type)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.ParameterInfo, System.Type, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.ParameterInfo, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.IsDefined(System.Reflection.ParameterInfo, System.Type)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.IsDefined(System.Reflection.ParameterInfo, System.Type, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.ParameterInfo, System.Type)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.ParameterInfo, System.Type, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Module, System.Type)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Module)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Module, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Module, System.Type, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.IsDefined(System.Reflection.Module, System.Type)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.IsDefined(System.Reflection.Module, System.Type, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.Module, System.Type)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.Module, System.Type, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Assembly, System.Type)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Assembly, System.Type, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Assembly)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Assembly, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.IsDefined(System.Reflection.Assembly, System.Type)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.IsDefined(System.Reflection.Assembly, System.Type, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.Assembly, System.Type)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.Assembly, System.Type, System.Boolean)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.Equals(System.Object)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.GetHashCode()</span>
    </div>
    <div>
      <span class="xref">System.Attribute.Match(System.Object)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.IsDefaultAttribute()</span>
    </div>
    <div>
      <span class="xref">System.Attribute.System.Runtime.InteropServices._Attribute.GetTypeInfoCount(System.UInt32)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.System.Runtime.InteropServices._Attribute.GetTypeInfo(System.UInt32, System.UInt32, System.IntPtr)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.System.Runtime.InteropServices._Attribute.GetIDsOfNames(System.Guid, System.IntPtr, System.UInt32, System.UInt32, System.IntPtr)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.System.Runtime.InteropServices._Attribute.Invoke(System.UInt32, System.Guid, System.UInt32, System.Int16, System.IntPtr, System.IntPtr, System.IntPtr, System.IntPtr)</span>
    </div>
    <div>
      <span class="xref">System.Attribute.TypeId</span>
    </div>
    <div>
      <span class="xref">System.Object.ToString()</span>
    </div>
    <div>
      <span class="xref">System.Object.Equals(System.Object, System.Object)</span>
    </div>
    <div>
      <span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span>
    </div>
    <div>
      <span class="xref">System.Object.GetType()</span>
    </div>
    <div>
      <span class="xref">System.Object.MemberwiseClone()</span>
    </div>
  </div>
  <h6><strong>Namespace</strong>: <a class="xref" href="Apache.Ignite.Core.Cache.Affinity.html">Apache.Ignite.Core.Cache.Affinity</a></h6>
  <h6><strong>Assembly</strong>: Apache.Ignite.Core.dll</h6>
  <h5 id="Apache_Ignite_Core_Cache_Affinity_AffinityKeyMappedAttribute_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field)]
public sealed class AffinityKeyMappedAttribute : Attribute, _Attribute</code></pre>
  </div>
  <h3 id="methods">Methods
  </h3>
  <a id="Apache_Ignite_Core_Cache_Affinity_AffinityKeyMappedAttribute_GetFieldNameFromAttribute_" data-uid="Apache.Ignite.Core.Cache.Affinity.AffinityKeyMappedAttribute.GetFieldNameFromAttribute*"></a>
  <h4 id="Apache_Ignite_Core_Cache_Affinity_AffinityKeyMappedAttribute_GetFieldNameFromAttribute_System_Type_" data-uid="Apache.Ignite.Core.Cache.Affinity.AffinityKeyMappedAttribute.GetFieldNameFromAttribute(System.Type)">GetFieldNameFromAttribute(Type)</h4>
  <div class="markdown level1 summary"><p>Gets the affinity key field name from attribute.</p>
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="decalaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public static string GetFieldNameFromAttribute(Type type)</code></pre>
  </div>
  <h5 class="parameters">Parameters</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="xref">System.Type</span></td>
        <td><span class="parametername">type</span></td>
        <td></td>
      </tr>
    </tbody>
  </table>
  <h5 class="returns">Returns</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="xref">System.String</span></td>
        <td></td>
      </tr>
    </tbody>
  </table>
  <h3 id="implements">Implements</h3>
  <div>
      <span class="xref">System.Runtime.InteropServices._Attribute</span>
  </div>
</article>
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