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<article class="content wrap" id="_content" data-uid="Lucene.Net.Search.Payloads.PayloadFunction">
<h1 id="Lucene_Net_Search_Payloads_PayloadFunction" data-uid="Lucene.Net.Search.Payloads.PayloadFunction" class="text-break">Class PayloadFunction
</h1>
<div class="markdown level0 summary"><p>An abstract class that defines a way for Payload*Query instances to transform
the cumulative effects of payload scores for a document.
<p>
<div class="lucene-block lucene-experimental">This is a Lucene.NET EXPERIMENTAL API, use at your own risk</div><p> this class and its derivations are experimental and subject to
change</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">PayloadFunction</span></div>
<div class="level2"><a class="xref" href="Lucene.Net.Search.Payloads.AveragePayloadFunction.html">AveragePayloadFunction</a></div>
<div class="level2"><a class="xref" href="Lucene.Net.Search.Payloads.MaxPayloadFunction.html">MaxPayloadFunction</a></div>
<div class="level2"><a class="xref" href="Lucene.Net.Search.Payloads.MinPayloadFunction.html">MinPayloadFunction</a></div>
</div>
<div class="inheritedMembers">
<h5>Inherited Members</h5>
<div>
<span class="xref">System.Object.Equals(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>
<span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span>
</div>
<div>
<span class="xref">System.Object.ToString()</span>
</div>
</div>
<h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.Search.Payloads.html">Lucene.Net.Search.Payloads</a></h6>
<h6><strong>Assembly</strong>: Lucene.Net.dll</h6>
<h5 id="Lucene_Net_Search_Payloads_PayloadFunction_syntax">Syntax</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public abstract class PayloadFunction</code></pre>
</div>
<h3 id="methods">Methods
</h3>
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<a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Payloads_PayloadFunction_CurrentScore_System_Int32_System_String_System_Int32_System_Int32_System_Int32_System_Single_System_Single_.md&amp;value=---%0Auid%3A%20Lucene.Net.Search.Payloads.PayloadFunction.CurrentScore(System.Int32%2CSystem.String%2CSystem.Int32%2CSystem.Int32%2CSystem.Int32%2CSystem.Single%2CSystem.Single)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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</span>
<a id="Lucene_Net_Search_Payloads_PayloadFunction_CurrentScore_" data-uid="Lucene.Net.Search.Payloads.PayloadFunction.CurrentScore*"></a>
<h4 id="Lucene_Net_Search_Payloads_PayloadFunction_CurrentScore_System_Int32_System_String_System_Int32_System_Int32_System_Int32_System_Single_System_Single_" data-uid="Lucene.Net.Search.Payloads.PayloadFunction.CurrentScore(System.Int32,System.String,System.Int32,System.Int32,System.Int32,System.Single,System.Single)">CurrentScore(Int32, String, Int32, Int32, Int32, Single, Single)</h4>
<div class="markdown level1 summary"><p>Calculate the score up to this point for this doc and field </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public abstract float CurrentScore(int docId, string field, int start, int end, int numPayloadsSeen, float currentScore, float currentPayloadScore)</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.Int32</span></td>
<td><span class="parametername">docId</span></td>
<td><p>The current doc </p>
</td>
</tr>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">field</span></td>
<td><p>The field </p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">start</span></td>
<td><p>The start position of the matching Span </p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">end</span></td>
<td><p>The end position of the matching Span </p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">numPayloadsSeen</span></td>
<td><p>The number of payloads seen so far </p>
</td>
</tr>
<tr>
<td><span class="xref">System.Single</span></td>
<td><span class="parametername">currentScore</span></td>
<td><p>The current score so far </p>
</td>
</tr>
<tr>
<td><span class="xref">System.Single</span></td>
<td><span class="parametername">currentPayloadScore</span></td>
<td><p>The score for the current payload </p>
</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.Single</span></td>
<td><p>The new current Score</p>
</td>
</tr>
</tbody>
</table>
<h5 id="Lucene_Net_Search_Payloads_PayloadFunction_CurrentScore_System_Int32_System_String_System_Int32_System_Int32_System_Int32_System_Single_System_Single__seealso">See Also</h5>
<div class="seealso">
<div><a class="xref" href="Lucene.Net.Search.Spans.Spans.html">Spans</a></div>
</div>
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</span>
<a id="Lucene_Net_Search_Payloads_PayloadFunction_DocScore_" data-uid="Lucene.Net.Search.Payloads.PayloadFunction.DocScore*"></a>
<h4 id="Lucene_Net_Search_Payloads_PayloadFunction_DocScore_System_Int32_System_String_System_Int32_System_Single_" data-uid="Lucene.Net.Search.Payloads.PayloadFunction.DocScore(System.Int32,System.String,System.Int32,System.Single)">DocScore(Int32, String, Int32, Single)</h4>
<div class="markdown level1 summary"><p>Calculate the final score for all the payloads seen so far for this doc/field </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public abstract float DocScore(int docId, string field, int numPayloadsSeen, float payloadScore)</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.Int32</span></td>
<td><span class="parametername">docId</span></td>
<td><p>The current doc </p>
</td>
</tr>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">field</span></td>
<td><p>The current field </p>
</td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">numPayloadsSeen</span></td>
<td><p>The total number of payloads seen on this document </p>
</td>
</tr>
<tr>
<td><span class="xref">System.Single</span></td>
<td><span class="parametername">payloadScore</span></td>
<td><p>The raw score for those payloads </p>
</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.Single</span></td>
<td><p>The final score for the payloads </p>
</td>
</tr>
</tbody>
</table>
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<a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Payloads_PayloadFunction_Equals_System_Object_.md&amp;value=---%0Auid%3A%20Lucene.Net.Search.Payloads.PayloadFunction.Equals(System.Object)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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<a id="Lucene_Net_Search_Payloads_PayloadFunction_Equals_" data-uid="Lucene.Net.Search.Payloads.PayloadFunction.Equals*"></a>
<h4 id="Lucene_Net_Search_Payloads_PayloadFunction_Equals_System_Object_" data-uid="Lucene.Net.Search.Payloads.PayloadFunction.Equals(System.Object)">Equals(Object)</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public abstract override bool Equals(object o)</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.Object</span></td>
<td><span class="parametername">o</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.Boolean</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><span class="xref">System.Object.Equals(System.Object)</span></div>
<span class="small pull-right mobile-hide">
<span class="divider">|</span>
<a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_Search_Payloads_PayloadFunction_Explain_System_Int32_System_String_System_Int32_System_Single_.md&amp;value=---%0Auid%3A%20Lucene.Net.Search.Payloads.PayloadFunction.Explain(System.Int32%2CSystem.String%2CSystem.Int32%2CSystem.Single)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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<a id="Lucene_Net_Search_Payloads_PayloadFunction_Explain_" data-uid="Lucene.Net.Search.Payloads.PayloadFunction.Explain*"></a>
<h4 id="Lucene_Net_Search_Payloads_PayloadFunction_Explain_System_Int32_System_String_System_Int32_System_Single_" data-uid="Lucene.Net.Search.Payloads.PayloadFunction.Explain(System.Int32,System.String,System.Int32,System.Single)">Explain(Int32, String, Int32, Single)</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public virtual Explanation Explain(int docId, string field, int numPayloadsSeen, float payloadScore)</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.Int32</span></td>
<td><span class="parametername">docId</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">field</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">numPayloadsSeen</span></td>
<td></td>
</tr>
<tr>
<td><span class="xref">System.Single</span></td>
<td><span class="parametername">payloadScore</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><a class="xref" href="Lucene.Net.Search.Explanation.html">Explanation</a></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_Search_Payloads_PayloadFunction_GetHashCode_" data-uid="Lucene.Net.Search.Payloads.PayloadFunction.GetHashCode*"></a>
<h4 id="Lucene_Net_Search_Payloads_PayloadFunction_GetHashCode" data-uid="Lucene.Net.Search.Payloads.PayloadFunction.GetHashCode">GetHashCode()</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public abstract override int GetHashCode()</code></pre>
</div>
<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.Int32</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><span class="xref">System.Object.GetHashCode()</span></div>
<h3 id="seealso">See Also</h3>
<div class="seealso">
<div><a class="xref" href="Lucene.Net.Search.Payloads.PayloadTermQuery.html">PayloadTermQuery</a></div>
</div>
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