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<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>FindMergesForOptimize Method </title><meta name="Language" content="en-us" /><meta name="System.Keywords" content="FindMergesForOptimize method" /><meta name="System.Keywords" content="LogMergePolicy.FindMergesForOptimize method" /><meta name="Microsoft.Help.F1" content="Lucene.Net.Index.LogMergePolicy.FindMergesForOptimize" /><meta name="Microsoft.Help.Id" content="M:Lucene.Net.Index.LogMergePolicy.FindMergesForOptimize(Lucene.Net.Index.SegmentInfos,System.Int32,System.Collections.Hashtable)" /><meta name="Description" content="Returns the merges necessary to optimize the index." /><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="98a9d972-d88f-6228-d200-b60b847daeb4" /><meta name="guid" content="98a9d972-d88f-6228-d200-b60b847daeb4" /><xml><MSHelp:Attr Name="AssetID" Value="M:Lucene.Net.Index.LogMergePolicy.FindMergesForOptimize(Lucene.Net.Index.SegmentInfos,System.Int32,System.Collections.Hashtable)" /><MSHelp:TOCTitle Title="FindMergesForOptimize Method " /><MSHelp:RLTitle Title="LogMergePolicy.FindMergesForOptimize Method (Lucene.Net.Index)" /><MSHelp:Keyword Index="A" Term="M:Lucene.Net.Index.LogMergePolicy.FindMergesForOptimize(Lucene.Net.Index.SegmentInfos,System.Int32,System.Collections.Hashtable)" /><MSHelp:Keyword Index="A" Term="frlrfLuceneNetIndexLogMergePolicyClassFindMergesForOptimizeTopic" /><MSHelp:Keyword Index="K" Term="FindMergesForOptimize method" /><MSHelp:Keyword Index="K" Term="LogMergePolicy.FindMergesForOptimize method" /><MSHelp:Keyword Index="F" Term="Lucene.Net.Index.LogMergePolicy.FindMergesForOptimize" /><MSHelp:Attr Name="APIType" Value="Managed" /><MSHelp:Attr Name="APILocation" Value="Lucene.Net.dll" /><MSHelp:Attr Name="APIName" Value="Lucene.Net.Index.LogMergePolicy.FindMergesForOptimize" /><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="Returns the merges necessary to optimize the index. This merge policy defines &quot;optimized&quot; to mean only one segment in the index, where that segment has no deletions pending nor separate norms, and it is in ..." /><MSHelp:Attr Name="AssemblyVersion" Value="2.9.4.1" /></xml></head><body><input type="hidden" id="userDataCache" class="userDataStyle" /><input type="hidden" id="hiddenScrollOffset" /><img id="collapseImage" style="display:none; height:0; width:0;" src="../icons/collapse_all.gif" alt="Collapse image" title="Collapse image" /><img id="expandImage" style="display:none; height:0; width:0;" src="../icons/expand_all.gif" alt="Expand Image" title="Expand Image" /><img id="collapseAllImage" style="display:none; height:0; width:0;" src="../icons/collapse_all.gif" /><img id="expandAllImage" style="display:none; height:0; width:0;" src="../icons/expand_all.gif" /><img id="dropDownImage" style="display:none; height:0; width:0;" src="../icons/dropdown.gif" /><img id="dropDownHoverImage" style="display:none; height:0; width:0;" src="../icons/dropdownHover.gif" /><img id="copyImage" style="display:none; height:0; width:0;" src="../icons/copycode.gif" alt="Copy image" title="Copy image" /><img id="copyHoverImage" style="display:none; height:0; width:0;" src="../icons/copycodeHighlight.gif" alt="CopyHover image" title="CopyHover image" /><div id="header"><table id="topTable" cellspacing="0" cellpadding="0"><tr><td><span onclick="ExpandCollapseAll(toggleAllImage)" style="cursor:default;" onkeypress="ExpandCollapseAll_CheckKey(toggleAllImage, event)" tabindex="0"><img ID="toggleAllImage" class="toggleAll" src="../icons/collapse_all.gif" /> <label id="collapseAllLabel" for="toggleAllImage" style="display: none;">Collapse All</label><label id="expandAllLabel" for="toggleAllImage" style="display: none;">Expand All</label> </span><span>    </span><span id="devlangsDropdown" class="filter" tabindex="0"><img id="devlangsDropdownImage" src="../icons/dropdown.gif" /> <label id="devlangsMenuAllLabel" for="devlangsDropdownImage" style="display: none;"><nobr>Code: All </nobr></label><label id="devlangsMenuMultipleLabel" for="devlangsDropdownImage" style="display: none;"><nobr>Code: Multiple </nobr></label><label id="devlangsMenuCSharpLabel" for="devlangsDropdownImage" style="display: none;"><nobr>Code: C# </nobr></label><label id="devlangsMenuVisualBasicLabel" for="devlangsDropdownImage" style="display: none;"><nobr>Code: Visual Basic </nobr></label><label id="devlangsMenuManagedCPlusPlusLabel" for="devlangsDropdownImage" style="display: none;"><nobr>Code: Visual C++ </nobr></label></span></td></tr></table><div id="devlangsMenu"><input id="CSharpCheckbox" type="checkbox" data="CSharp,cs,'persist'" value="on" onClick="SetLanguage(this)" /><label class="checkboxLabel" for="CSharpCheckbox">C#</label><br /><input id="VisualBasicCheckbox" type="checkbox" data="VisualBasic,vb,'persist'" value="on" onClick="SetLanguage(this)" /><label class="checkboxLabel" for="VisualBasicCheckbox">Visual Basic</label><br /><input id="ManagedCPlusPlusCheckbox" type="checkbox" data="ManagedCPlusPlus,cpp,'persist'" value="on" onClick="SetLanguage(this)" /><label class="checkboxLabel" for="ManagedCPlusPlusCheckbox">Visual C++</label><br /></div><table id="bottomTable" cellpadding="0" cellspacing="0"><tr id="headerTableRow1"><td align="left"><span id="runningHeaderText">Lucene.Net Class Libraries</span></td></tr><tr id="headerTableRow2"><td align="left"><span id="nsrTitle">LogMergePolicy<span class="languageSpecificText"><span class="cs">.</span><span class="vb">.</span><span class="cpp">::</span><span class="nu">.</span><span class="fs">.</span></span>FindMergesForOptimize Method </span></td></tr><tr id="headerTableRow3"><td align="left"><a href="29c303a3-86f2-5d41-be6a-972431b85fe8.htm">LogMergePolicy Class</a> <a href="#seeAlsoToggle" onclick="OpenSection(seeAlsoToggle)">See Also</a> <span id="headfeedbackarea" class="feedbackhead"><a href="javascript:SubmitFeedback('','Lucene.Net Class Libraries','','','','%0\dYour%20feedback%20is%20used%20to%20improve%20the%20documentation%20and%20the%20product.%20Your%20e-mail%20address%20will%20not%20be%20used%20for%20any%20other%20purpose%20and%20is%20disposed%20of%20after%20the%20issue%20you%20report%20is%20resolved.%20%20While%20working%20to%20resolve%20the%20issue%20that%20you%20report,%20you%20may%20be%20contacted%20via%20e-mail%20to%20get%20further%20details%20or%20clarification%20on%20the%20feedback%20you%20sent.%20After%20the%20issue%20you%20report%20has%20been%20addressed,%20you%20may%20receive%20an%20e-mail%20to%20let%20you%20know%20that%20your%20feedback%20has%20been%20addressed.%0\A%0\d','Customer%20Feedback');">Send Feedback</a></span></td></tr></table><table id="gradientTable"><tr><td class="nsrBottom" background="../icons/gradient.gif" /></tr></table></div><div id="mainSection"><div id="mainBody"><div id="allHistory" class="saveHistory" onsave="saveAll()" onload="loadAll()" /><span style="color: DarkGray"></span><div class="summary">Returns the merges necessary to optimize the index.
This merge policy defines "optimized" to mean only one
segment in the index, where that segment has no
deletions pending nor separate norms, and it is in
compound file format if the current useCompoundFile
setting is true. This method returns multiple merges
(mergeFactor at a time) so the {@link MergeScheduler}
in use may make use of concurrency.
</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">override</span> <a href="74e3c1be-5368-d17e-7a9d-7e28dd59634b.htm">MergePolicy<span class="languageSpecificText"><span class="cs">.</span><span class="vb">.</span><span class="cpp">::</span><span class="nu">.</span><span class="fs">.</span></span>MergeSpecification</a> <span class="identifier">FindMergesForOptimize</span>(
<a href="74e4acb5-1d3e-e127-a10b-82431b939a1c.htm">SegmentInfos</a> <span class="parameter">infos</span>,
<a href="http://msdn2.microsoft.com/en-us/library/td2s409d" target="_blank">int</a> <span class="parameter">maxNumSegments</span>,
<a href="http://msdn2.microsoft.com/en-us/library/aahzb21x" target="_blank">Hashtable</a> <span class="parameter">segmentsToOptimize</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">Overrides</span> <span class="keyword">Function</span> <span class="identifier">FindMergesForOptimize</span> ( _
<span class="parameter">infos</span> <span class="keyword">As</span> <a href="74e4acb5-1d3e-e127-a10b-82431b939a1c.htm">SegmentInfos</a>, _
<span class="parameter">maxNumSegments</span> <span class="keyword">As</span> <a href="http://msdn2.microsoft.com/en-us/library/td2s409d" target="_blank">Integer</a>, _
<span class="parameter">segmentsToOptimize</span> <span class="keyword">As</span> <a href="http://msdn2.microsoft.com/en-us/library/aahzb21x" target="_blank">Hashtable</a> _
) <span class="keyword">As</span> <a href="74e3c1be-5368-d17e-7a9d-7e28dd59634b.htm">MergePolicy<span class="languageSpecificText"><span class="cs">.</span><span class="vb">.</span><span class="cpp">::</span><span class="nu">.</span><span class="fs">.</span></span>MergeSpecification</a></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">virtual</span> <a href="74e3c1be-5368-d17e-7a9d-7e28dd59634b.htm">MergePolicy<span class="languageSpecificText"><span class="cs">.</span><span class="vb">.</span><span class="cpp">::</span><span class="nu">.</span><span class="fs">.</span></span>MergeSpecification</a>^ <span class="identifier">FindMergesForOptimize</span>(
<a href="74e4acb5-1d3e-e127-a10b-82431b939a1c.htm">SegmentInfos</a>^ <span class="parameter">infos</span>,
<a href="http://msdn2.microsoft.com/en-us/library/td2s409d" target="_blank">int</a> <span class="parameter">maxNumSegments</span>,
<a href="http://msdn2.microsoft.com/en-us/library/aahzb21x" target="_blank">Hashtable</a>^ <span class="parameter">segmentsToOptimize</span>
) <span class="keyword">override</span></pre></td></tr></table></span></div><div id="parameters"><h4 class="subHeading">Parameters</h4><dl paramName="infos"><dt><span class="parameter">infos</span></dt><dd>Type: <a href="74e4acb5-1d3e-e127-a10b-82431b939a1c.htm">Lucene.Net.Index<span class="languageSpecificText"><span class="cs">.</span><span class="vb">.</span><span class="cpp">::</span><span class="nu">.</span><span class="fs">.</span></span>SegmentInfos</a><br /><p style="color: #dc143c; font-size: 8.5pt; font-weight: bold;">[Missing &lt;param name="infos"/&gt; documentation for "M:Lucene.Net.Index.LogMergePolicy.FindMergesForOptimize(Lucene.Net.Index.SegmentInfos,System.Int32,System.Collections.Hashtable)"]</p></dd></dl><dl paramName="maxNumSegments"><dt><span class="parameter">maxNumSegments</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/td2s409d" target="_blank">System<span class="languageSpecificText"><span class="cs">.</span><span class="vb">.</span><span class="cpp">::</span><span class="nu">.</span><span class="fs">.</span></span>Int32</a><br /><p style="color: #dc143c; font-size: 8.5pt; font-weight: bold;">[Missing &lt;param name="maxNumSegments"/&gt; documentation for "M:Lucene.Net.Index.LogMergePolicy.FindMergesForOptimize(Lucene.Net.Index.SegmentInfos,System.Int32,System.Collections.Hashtable)"]</p></dd></dl><dl paramName="segmentsToOptimize"><dt><span class="parameter">segmentsToOptimize</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/aahzb21x" target="_blank">System.Collections<span class="languageSpecificText"><span class="cs">.</span><span class="vb">.</span><span class="cpp">::</span><span class="nu">.</span><span class="fs">.</span></span>Hashtable</a><br /><p style="color: #dc143c; font-size: 8.5pt; font-weight: bold;">[Missing &lt;param name="segmentsToOptimize"/&gt; documentation for "M:Lucene.Net.Index.LogMergePolicy.FindMergesForOptimize(Lucene.Net.Index.SegmentInfos,System.Int32,System.Collections.Hashtable)"]</p></dd></dl></div><h4 class="subHeading">Return Value</h4><p style="color: #dc143c; font-size: 8.5pt; font-weight: bold;">[Missing &lt;returns&gt; documentation for "M:Lucene.Net.Index.LogMergePolicy.FindMergesForOptimize(Lucene.Net.Index.SegmentInfos,System.Int32,System.Collections.Hashtable)"]</p></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="29c303a3-86f2-5d41-be6a-972431b85fe8.htm">LogMergePolicy 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>