﻿<html xmlns:MSHelp="http://msdn.microsoft.com/mshelp" xmlns:mshelp="http://msdn.microsoft.com/mshelp" xmlns:ddue="http://ddue.schemas.microsoft.com/authoring/2003/5" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:msxsl="urn:schemas-microsoft-com:xslt"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8" /><META NAME="save" CONTENT="history" /><title>MaybeMerge Method </title><meta name="Language" content="en-us" /><meta name="System.Keywords" content="MaybeMerge method" /><meta name="System.Keywords" content="IndexWriter.MaybeMerge method" /><meta name="Microsoft.Help.F1" content="Lucene.Net.Index.IndexWriter.MaybeMerge" /><meta name="Microsoft.Help.Id" content="M:Lucene.Net.Index.IndexWriter.MaybeMerge" /><meta name="Description" content="Expert: asks the mergePolicy whether any merges are necessary now and if so, runs the requested merges and then iterate (test again if merges are needed) until no more merges are returned by the mergePolicy." /><meta name="Microsoft.Help.ContentType" content="Reference" /><link rel="stylesheet" type="text/css" href="../styles/Presentation.css" /><link rel="stylesheet" type="text/css" href="ms-help://Hx/HxRuntime/HxLink.css" /><script type="text/javascript" src="../scripts/EventUtilities.js"> </script><script type="text/javascript" src="../scripts/SplitScreen.js"> </script><script type="text/javascript" src="../scripts/Dropdown.js"> </script><script type="text/javascript" src="../scripts/script_manifold.js"> </script><script type="text/javascript" src="../scripts/script_feedBack.js"> </script><script type="text/javascript" src="../scripts/CheckboxMenu.js"> </script><script type="text/javascript" src="../scripts/CommonUtilities.js"> </script><meta name="container" content="Lucene.Net.Index" /><meta name="file" content="f3d23142-5a58-ef1a-ab75-c3d6ec6fba09" /><meta name="guid" content="f3d23142-5a58-ef1a-ab75-c3d6ec6fba09" /><xml><MSHelp:Attr Name="AssetID" Value="M:Lucene.Net.Index.IndexWriter.MaybeMerge" /><MSHelp:TOCTitle Title="MaybeMerge Method " /><MSHelp:RLTitle Title="IndexWriter.MaybeMerge Method  (Lucene.Net.Index)" /><MSHelp:Keyword Index="A" Term="M:Lucene.Net.Index.IndexWriter.MaybeMerge" /><MSHelp:Keyword Index="A" Term="frlrfLuceneNetIndexIndexWriterClassMaybeMergeTopic" /><MSHelp:Keyword Index="K" Term="MaybeMerge method" /><MSHelp:Keyword Index="K" Term="IndexWriter.MaybeMerge method" /><MSHelp:Keyword Index="F" Term="Lucene.Net.Index.IndexWriter.MaybeMerge" /><MSHelp:Attr Name="APIType" Value="Managed" /><MSHelp:Attr Name="APILocation" Value="Lucene.Net.dll" /><MSHelp:Attr Name="APIName" Value="Lucene.Net.Index.IndexWriter.MaybeMerge" /><MSHelp:Attr Name="DevLang" Value="CSharp" /><MSHelp:Attr Name="DevLang" Value="VB" /><MSHelp:Attr Name="Locale" Value="en-us" /><MSHelp:Attr Name="TopicType" Value="kbSyntax" /><MSHelp:Attr Name="TopicType" Value="apiref" /><MSHelp:Attr Name="Abstract" Value="Expert: asks the mergePolicy whether any merges are necessary now and if so, runs the requested merges and then iterate (test again if merges are needed) until no more merges are returned by the mergePolicy. ..." /><MSHelp:Attr Name="AssemblyVersion" Value="2.9.4.1" /></xml><link type="text/css" rel="stylesheet" href="../styles/highlight.css" /><script type="text/javascript" src="../scripts/highlight.js"> </script></head><body><input type="hidden" id="userDataCache" class="userDataStyle" /><input type="hidden" id="hiddenScrollOffset" /><img id="collapseImage" style="display:none; 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            necessary now and if so, runs the requested merges and
            then iterate (test again if merges are needed) until no
            more merges are returned by the mergePolicy.
            
            Explicit calls to maybeMerge() are usually not
            necessary. The most common case is when merge policy
            parameters have changed.
            
            <p /><b>NOTE</b>: if this method hits an OutOfMemoryError
            you should immediately close the writer.  See <a href="#OOME">above</a> for details.<p /></div><p /><b>Namespace:</b> <a href="4d52bcdb-050f-b66e-6d74-d7169ebc88b0.htm">Lucene.Net.Index</a><br /><b>Assembly:</b> <span sdata="assembly">Lucene.Net</span> (in Lucene.Net.dll) Version: 2.9.4.1<h1 class="heading"><span onclick="ExpandCollapse(syntaxToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(syntaxToggle, event)" tabindex="0"><img id="syntaxToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />Syntax</span></h1><div id="syntaxSection" class="section" name="collapseableSection" style=""><div id="syntaxCodeBlocks" class="code"><span codeLanguage="CSharp"><table><tr><th>C#</th></tr><tr><td><pre xml:space="preserve"><span class="keyword">public</span> <span class="keyword">void</span> <span class="identifier">MaybeMerge</span>()</pre></td></tr></table></span><span codeLanguage="VisualBasicDeclaration"><table><tr><th>Visual Basic</th></tr><tr><td><pre xml:space="preserve"><span class="keyword">Public</span> <span class="keyword">Sub</span> <span class="identifier">MaybeMerge</span></pre></td></tr></table></span><span codeLanguage="ManagedCPlusPlus"><table><tr><th>Visual C++</th></tr><tr><td><pre xml:space="preserve"><span class="keyword">public</span>:
<span class="keyword">void</span> <span class="identifier">MaybeMerge</span>()</pre></td></tr></table></span></div></div><h1 class="heading"><span onclick="ExpandCollapse(seeAlsoToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(seeAlsoToggle, event)" tabindex="0"><img id="seeAlsoToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />See Also</span></h1><div id="seeAlsoSection" class="section" name="collapseableSection" style=""><div class="seeAlsoStyle"><a href="cfb56f63-f6d1-efdf-e1eb-54ef6f901cd1.htm">IndexWriter Class</a></div><div class="seeAlsoStyle"><a href="4d52bcdb-050f-b66e-6d74-d7169ebc88b0.htm">Lucene.Net.Index Namespace</a></div></div></div><div id="footer"><div class="footerLine"><img width="100%" height="3px" src="../icons/footer.gif" alt="Footer image" title="Footer image" /></div><A NAME="feedback"></A><span id="fb" class="feedbackcss"></span></div></div></body></html>