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&#160;<span id="projectnumber">3.0.3</span>
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<div id="projectbrief">Lucene.Net is a .NET port of the Java Lucene Indexing Library</div>
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<li class="navelem"><a class="el" href="namespace_lucene.html">Lucene</a></li><li class="navelem"><a class="el" href="namespace_lucene_1_1_net.html">Net</a></li><li class="navelem"><a class="el" href="namespace_lucene_1_1_net_1_1_index.html">Index</a></li><li class="navelem"><a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html">IndexCommit</a></li> </ul>
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<a href="#pub-methods">Public Member Functions</a> &#124;
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<div class="title">Lucene.Net.Index.IndexCommit Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div>
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<p>Expert: represents a single commit into an index as seen by the <a class="el" href="interface_lucene_1_1_net_1_1_index_1_1_index_deletion_policy.html" title="Expert: policy for deletion of stale index commits.">IndexDeletionPolicy</a> or <a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_reader.html" title="IndexReader is an abstract class, providing an interface for accessing an index. Search of an index i...">IndexReader</a>.
<a href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html#details">More...</a></p>
<p>Inherited by Lucene.Net.Index.DirectoryReader.ReaderCommit, Lucene.Net.Index.IndexFileDeleter.CommitPoint, <a class="el" href="class_lucene_1_1_net_1_1_index_1_1_segments_gen_commit.html">Lucene.Net.Index.SegmentsGenCommit</a>, and Lucene.Net.Index.SnapshotDeletionPolicy.MyCommitPoint.</p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:aff47e6a2b3b8fca0b391a4ed4a19347e"><td class="memItemLeft" align="right" valign="top">abstract void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html#aff47e6a2b3b8fca0b391a4ed4a19347e">Delete</a> ()</td></tr>
<tr class="memdesc:aff47e6a2b3b8fca0b391a4ed4a19347e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Delete this commit point. This only applies when using the commit point in the context of <a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_writer.html" title="An IndexWriter creates and maintains an index. The create argument to the constructor determines whet...">IndexWriter</a>'s <a class="el" href="interface_lucene_1_1_net_1_1_index_1_1_index_deletion_policy.html" title="Expert: policy for deletion of stale index commits.">IndexDeletionPolicy</a>. Upon calling this, the writer is notified that this commit point should be deleted. Decision that a commit-point should be deleted is taken by the <a class="el" href="interface_lucene_1_1_net_1_1_index_1_1_index_deletion_policy.html" title="Expert: policy for deletion of stale index commits.">IndexDeletionPolicy</a> in effect and therefore this should only be called by its IndexDeletionPolicy.OnInit{T}(IList{T}) or IndexDeletionPolicy.OnCommit{T}(IList{T}) methods. <a href="#aff47e6a2b3b8fca0b391a4ed4a19347e"></a><br/></td></tr>
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<tr class="memitem:a40ed7c06cca17c2d36d05e3b411ee48e"><td class="memItemLeft" align="right" valign="top">override bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html#a40ed7c06cca17c2d36d05e3b411ee48e">Equals</a> (System.Object other)</td></tr>
<tr class="memdesc:a40ed7c06cca17c2d36d05e3b411ee48e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Two IndexCommits are equal if both their Directory and versions are equal. <a href="#a40ed7c06cca17c2d36d05e3b411ee48e"></a><br/></td></tr>
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<tr class="memitem:a2c7526ce96591849aac8ac6622d7766b"><td class="memItemLeft" align="right" valign="top">override int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html#a2c7526ce96591849aac8ac6622d7766b">GetHashCode</a> ()</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="properties"></a>
Properties</h2></td></tr>
<tr class="memitem:ae046c896bc7ad5879150d1699508728f"><td class="memItemLeft" align="right" valign="top">abstract string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html#ae046c896bc7ad5879150d1699508728f">SegmentsFileName</a><code> [get]</code></td></tr>
<tr class="memdesc:ae046c896bc7ad5879150d1699508728f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the segments file (<code>segments_N</code>) associated with this commit point. <a href="#ae046c896bc7ad5879150d1699508728f"></a><br/></td></tr>
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<tr class="memitem:a161f174c9717cde228682505abedec4e"><td class="memItemLeft" align="right" valign="top">abstract ICollection&lt; string &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html#a161f174c9717cde228682505abedec4e">FileNames</a><code> [get]</code></td></tr>
<tr class="memdesc:a161f174c9717cde228682505abedec4e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns all index files referenced by this commit point. <a href="#a161f174c9717cde228682505abedec4e"></a><br/></td></tr>
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<tr class="memitem:a202915c427e2803d1162af43dbbb705b"><td class="memItemLeft" align="right" valign="top">abstract <a class="el" href="class_lucene_1_1_net_1_1_store_1_1_directory.html">Directory</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html#a202915c427e2803d1162af43dbbb705b">Directory</a><code> [get]</code></td></tr>
<tr class="memdesc:a202915c427e2803d1162af43dbbb705b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the <a class="el" href="class_lucene_1_1_net_1_1_store_1_1_directory.html" title="A Directory is a flat list of files. Files may be written once, when they are created. Once a file is created it may only be opened for read, or deleted. Random access is permitted both when reading and writing.">Store.Directory</a> for the index. <a href="#a202915c427e2803d1162af43dbbb705b"></a><br/></td></tr>
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<tr class="memitem:a729868a8460ab4df89f8ed3e17b727b6"><td class="memItemLeft" align="right" valign="top">abstract bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html#a729868a8460ab4df89f8ed3e17b727b6">IsDeleted</a><code> [get]</code></td></tr>
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<tr class="memitem:ae0d8525cbfc005f6135d547d1dbd2c49"><td class="memItemLeft" align="right" valign="top">abstract bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html#ae0d8525cbfc005f6135d547d1dbd2c49">IsOptimized</a><code> [get]</code></td></tr>
<tr class="memdesc:ae0d8525cbfc005f6135d547d1dbd2c49"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns true if this commit is an optimized index. <a href="#ae0d8525cbfc005f6135d547d1dbd2c49"></a><br/></td></tr>
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<tr class="memitem:ae8e5cb45a95f2ed9e97353169f354ce3"><td class="memItemLeft" align="right" valign="top">abstract long&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html#ae8e5cb45a95f2ed9e97353169f354ce3">Version</a><code> [get]</code></td></tr>
<tr class="memdesc:ae8e5cb45a95f2ed9e97353169f354ce3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the version for this <a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html" title="Expert: represents a single commit into an index as seen by the IndexDeletionPolicy or IndexReader...">IndexCommit</a>. This is the same value that <a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_reader.html#aad20c89b2d918432b2083d6db38b6f99" title="Version number when this IndexReader was opened. Not implemented in the IndexReader base class...">IndexReader.Version</a> would return if it were opened on this commit. <a href="#ae8e5cb45a95f2ed9e97353169f354ce3"></a><br/></td></tr>
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<tr class="memitem:ae3bb6388318efc6d9fe61f1f810c590b"><td class="memItemLeft" align="right" valign="top">abstract long&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html#ae3bb6388318efc6d9fe61f1f810c590b">Generation</a><code> [get]</code></td></tr>
<tr class="memdesc:ae3bb6388318efc6d9fe61f1f810c590b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the generation (the _N in segments_N) for this <a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html" title="Expert: represents a single commit into an index as seen by the IndexDeletionPolicy or IndexReader...">IndexCommit</a> <a href="#ae3bb6388318efc6d9fe61f1f810c590b"></a><br/></td></tr>
<tr class="separator:ae3bb6388318efc6d9fe61f1f810c590b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa66b4daa16ce95792272664ac89309c5"><td class="memItemLeft" align="right" valign="top">virtual long&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html#aa66b4daa16ce95792272664ac89309c5">Timestamp</a><code> [get]</code></td></tr>
<tr class="memdesc:aa66b4daa16ce95792272664ac89309c5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Convenience method that returns the last modified time of the segments_N file corresponding to this index commit, equivalent to getDirectory().fileModified(getSegmentsFileName()). <a href="#aa66b4daa16ce95792272664ac89309c5"></a><br/></td></tr>
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<tr class="memitem:a0cb2d89a20a47640463c174e41d60201"><td class="memItemLeft" align="right" valign="top">abstract IDictionary&lt; string, <br class="typebreak"/>
string &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html#a0cb2d89a20a47640463c174e41d60201">UserData</a><code> [get]</code></td></tr>
<tr class="memdesc:a0cb2d89a20a47640463c174e41d60201"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns userData, previously passed to IndexWriter.Commit(System.Collections.Generic.IDictionary{string, string}) for this commit. IDictionary is String -&gt; String. <a href="#a0cb2d89a20a47640463c174e41d60201"></a><br/></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Expert: represents a single commit into an index as seen by the <a class="el" href="interface_lucene_1_1_net_1_1_index_1_1_index_deletion_policy.html" title="Expert: policy for deletion of stale index commits.">IndexDeletionPolicy</a> or <a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_reader.html" title="IndexReader is an abstract class, providing an interface for accessing an index. Search of an index i...">IndexReader</a>.</p>
<p>Changes to the content of an index are made visible only after the writer who made that change commits by writing a new segments file (<code>segments_N</code>). This point in time, when the action of writing of a new segments file to the directory is completed, is an index commit.</p>
<p>Each index commit point has a unique segments file associated with it. The segments file associated with a later index commit point would have a larger N.</p>
<p><b>WARNING</b>: This API is a new and experimental and may suddenly change. </p>
<p>Definition at line <a class="el" href="_index_commit_8cs_source.html#l00044">44</a> of file <a class="el" href="_index_commit_8cs_source.html">IndexCommit.cs</a>.</p>
</div><h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname">abstract void Lucene.Net.Index.IndexCommit.Delete </td>
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<p>Delete this commit point. This only applies when using the commit point in the context of <a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_writer.html" title="An IndexWriter creates and maintains an index. The create argument to the constructor determines whet...">IndexWriter</a>'s <a class="el" href="interface_lucene_1_1_net_1_1_index_1_1_index_deletion_policy.html" title="Expert: policy for deletion of stale index commits.">IndexDeletionPolicy</a>. Upon calling this, the writer is notified that this commit point should be deleted. Decision that a commit-point should be deleted is taken by the <a class="el" href="interface_lucene_1_1_net_1_1_index_1_1_index_deletion_policy.html" title="Expert: policy for deletion of stale index commits.">IndexDeletionPolicy</a> in effect and therefore this should only be called by its IndexDeletionPolicy.OnInit{T}(IList{T}) or IndexDeletionPolicy.OnCommit{T}(IList{T}) methods. </p>
<p>Implemented in <a class="el" href="class_lucene_1_1_net_1_1_index_1_1_segments_gen_commit.html#ae5ce9a998f5c7f11a45c06dbfe456a2c">Lucene.Net.Index.SegmentsGenCommit</a>.</p>
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<p>Two IndexCommits are equal if both their Directory and versions are equal.</p>
<p>Definition at line <a class="el" href="_index_commit_8cs_source.html#l00076">76</a> of file <a class="el" href="_index_commit_8cs_source.html">IndexCommit.cs</a>.</p>
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<p>Definition at line <a class="el" href="_index_commit_8cs_source.html#l00087">87</a> of file <a class="el" href="_index_commit_8cs_source.html">IndexCommit.cs</a>.</p>
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<h2 class="groupheader">Property Documentation</h2>
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<td class="memname">abstract <a class="el" href="class_lucene_1_1_net_1_1_store_1_1_directory.html">Directory</a> Lucene.Net.Index.IndexCommit.Directory</td>
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<span class="mlabels"><span class="mlabel">get</span></span> </td>
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<p>Returns the <a class="el" href="class_lucene_1_1_net_1_1_store_1_1_directory.html" title="A Directory is a flat list of files. Files may be written once, when they are created. Once a file is created it may only be opened for read, or deleted. Random access is permitted both when reading and writing.">Store.Directory</a> for the index.</p>
<p>Definition at line <a class="el" href="_index_commit_8cs_source.html#l00055">55</a> of file <a class="el" href="_index_commit_8cs_source.html">IndexCommit.cs</a>.</p>
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<td class="memname">abstract ICollection&lt;string&gt; Lucene.Net.Index.IndexCommit.FileNames</td>
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<span class="mlabels"><span class="mlabel">get</span></span> </td>
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<p>Returns all index files referenced by this commit point.</p>
<p>Definition at line <a class="el" href="_index_commit_8cs_source.html#l00052">52</a> of file <a class="el" href="_index_commit_8cs_source.html">IndexCommit.cs</a>.</p>
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<td class="memname">abstract long Lucene.Net.Index.IndexCommit.Generation</td>
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<p>Returns the generation (the _N in segments_N) for this <a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html" title="Expert: represents a single commit into an index as seen by the IndexDeletionPolicy or IndexReader...">IndexCommit</a> </p>
<p>Definition at line <a class="el" href="_index_commit_8cs_source.html#l00101">101</a> of file <a class="el" href="_index_commit_8cs_source.html">IndexCommit.cs</a>.</p>
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<p>Definition at line <a class="el" href="_index_commit_8cs_source.html#l00070">70</a> of file <a class="el" href="_index_commit_8cs_source.html">IndexCommit.cs</a>.</p>
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<td class="memname">abstract bool Lucene.Net.Index.IndexCommit.IsOptimized</td>
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<p>Returns true if this commit is an optimized index.</p>
<p>Definition at line <a class="el" href="_index_commit_8cs_source.html#l00073">73</a> of file <a class="el" href="_index_commit_8cs_source.html">IndexCommit.cs</a>.</p>
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<td class="memname">abstract string Lucene.Net.Index.IndexCommit.SegmentsFileName</td>
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<p>Get the segments file (<code>segments_N</code>) associated with this commit point. </p>
<p>Definition at line <a class="el" href="_index_commit_8cs_source.html#l00049">49</a> of file <a class="el" href="_index_commit_8cs_source.html">IndexCommit.cs</a>.</p>
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<td class="memname">virtual long Lucene.Net.Index.IndexCommit.Timestamp</td>
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<p>Convenience method that returns the last modified time of the segments_N file corresponding to this index commit, equivalent to getDirectory().fileModified(getSegmentsFileName()). </p>
<p>Definition at line <a class="el" href="_index_commit_8cs_source.html#l00109">109</a> of file <a class="el" href="_index_commit_8cs_source.html">IndexCommit.cs</a>.</p>
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<td class="memname">abstract IDictionary&lt;string, string&gt; Lucene.Net.Index.IndexCommit.UserData</td>
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<p>Returns userData, previously passed to IndexWriter.Commit(System.Collections.Generic.IDictionary{string, string}) for this commit. IDictionary is String -&gt; String. </p>
<p>Definition at line <a class="el" href="_index_commit_8cs_source.html#l00117">117</a> of file <a class="el" href="_index_commit_8cs_source.html">IndexCommit.cs</a>.</p>
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<td class="memname">abstract long Lucene.Net.Index.IndexCommit.Version</td>
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<p>Returns the version for this <a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_commit.html" title="Expert: represents a single commit into an index as seen by the IndexDeletionPolicy or IndexReader...">IndexCommit</a>. This is the same value that <a class="el" href="class_lucene_1_1_net_1_1_index_1_1_index_reader.html#aad20c89b2d918432b2083d6db38b6f99" title="Version number when this IndexReader was opened. Not implemented in the IndexReader base class...">IndexReader.Version</a> would return if it were opened on this commit. </p>
<p>Definition at line <a class="el" href="_index_commit_8cs_source.html#l00096">96</a> of file <a class="el" href="_index_commit_8cs_source.html">IndexCommit.cs</a>.</p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>core/Index/<a class="el" href="_index_commit_8cs_source.html">IndexCommit.cs</a></li>
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