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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>ReadOnlyDirectoryReader Members</title><meta name="Language" content="en-us" /><meta name="System.Keywords" content="ReadOnlyDirectoryReader class" /><meta name="System.Keywords" content="ReadOnlyDirectoryReader class, all members" /><meta name="System.Keywords" content="Lucene.Net.Index.ReadOnlyDirectoryReader class" /><meta name="Microsoft.Help.Id" content="AllMembers.T:Lucene.Net.Index.ReadOnlyDirectoryReader" /><meta name="Microsoft.Help.ContentType" content="Reference" /><link rel="stylesheet" type="text/css" href="../styles/Presentation.css" /><link rel="stylesheet" type="text/css" 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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><div id="memberOptionsMenu"><input id="ProtectedCheckbox" type="checkbox" data="Protected" value="on" onClick="SetMemberOptions(this, 'vis')" /><label class="checkboxLabel" for="ProtectedCheckbox">Include Protected Members</label><br /><input id="InheritedCheckbox" type="checkbox" data="Inherited" value="on" onClick="SetMemberOptions(this, 'decl')" /><label class="checkboxLabel" for="InheritedCheckbox">Include Inherited Members</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">ReadOnlyDirectoryReader Members</span></td></tr><tr id="headerTableRow3"><td align="left"><a href="fc867324-66cc-f932-278b-340ae9751910.htm">ReadOnlyDirectoryReader Class</a> <a href="#methodTableToggle" onclick="OpenSection(methodTableToggle)">Methods</a> <a href="#fieldTableToggle" onclick="OpenSection(fieldTableToggle)">Fields</a> <a href="#propertyTableToggle" onclick="OpenSection(propertyTableToggle)">Properties</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><p /><p>The <a href="fc867324-66cc-f932-278b-340ae9751910.htm">ReadOnlyDirectoryReader</a> type exposes the following members.</p><h1 class="heading"><span onclick="ExpandCollapse(methodTableToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(methodTableToggle, event)" tabindex="0"><img id="methodTableToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />Methods</span></h1><div id="methodTableSection" class="section" name="collapseableSection" style=""><table id="memberList" class="members" frame="lhs" cellpadding="2"><col width="10%" /><tr><th class="iconColumn">
 
</th><th class="nameColumn">Name</th><th class="descriptionColumn">Description</th></tr><tr data="protected;declared;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="a4d64cf3-5aad-45ae-b3ce-511aed903bd1.htm">AcquireWriteLock</a></td><td> (Overrides <a href="379745e3-89a2-b615-7237-a584743b8fbe.htm">DirectoryReader<span class="languageSpecificText"><span class="cs">.</span><span class="vb">.</span><span class="cpp">::</span><span class="nu">.</span><span class="fs">.</span></span>AcquireWriteLock<span class="languageSpecificText"><span class="cs">()</span><span class="cpp">()</span><span class="nu">()</span><span class="fs">()</span></span></a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="045c851f-f5ad-a070-d292-63a970524080.htm">Clone<span class="languageSpecificText"><span class="cs">()</span><span class="cpp">()</span><span class="nu">()</span><span class="fs">()</span></span></a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="10b230d1-146b-231b-ac36-19d159cc5e2b.htm">Clone(Boolean)</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="7a6b09b7-d2d9-f2bf-3432-fbfd382c5c2f.htm">Close</a></td><td><div class="summary"> Closes files associated with this index.
Also saves any new deletions to disk.
No other methods should be called after this has been called.
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="69332939-397e-a379-ffbb-cab6e3299834.htm">Commit<span class="languageSpecificText"><span class="cs">()</span><span class="cpp">()</span><span class="nu">()</span><span class="fs">()</span></span></a></td><td><div class="summary"> Commit changes resulting from delete, undeleteAll, or
setNorm operations
If an exception is hit, then either no changes or all
changes will have been committed to the index
(transactional semantics).
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="d1242cba-8f21-e1ab-e346-d8e3fa0479ea.htm">Commit(IDictionary<span class="languageSpecificText"><span class="cs">&lt;</span><span class="vb">(Of </span><span class="cpp">&lt;</span><span class="fs">&lt;'</span><span class="nu">(</span></span>String, String<span class="languageSpecificText"><span class="cs">&gt;</span><span class="vb">)</span><span class="cpp">&gt;</span><span class="fs">&gt;</span><span class="nu">)</span></span>)</a></td><td><div class="summary"> Commit changes resulting from delete, undeleteAll, or
setNorm operations
If an exception is hit, then either no changes or all
changes will have been committed to the index
(transactional semantics).
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="913d603a-ccf9-b5f5-048b-da50ee76d65d.htm">DecRef</a></td><td><div class="summary"> Expert: decreases the refCount of this IndexReader
instance. If the refCount drops to 0, then pending
changes (if any) are committed to the index and this
reader is closed.
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="eebb56dd-b2f5-1b86-95da-6413795ee03b.htm">DeleteDocument</a></td><td><div class="summary">Deletes the document numbered <span id="cbc_5" x-lang="CSharp" codeLanguage="CSharp"><div class="highlight-title"><span class="highlight-copycode" onkeypress="javascript:CopyColorizedCodeCheckKey(this.parentNode, event);" tabindex="0" onmouseover="CopyCodeChangeIcon(this)" onmouseout="CopyCodeChangeIcon(this)" onclick="javascript:CopyColorizedCode(this.parentNode);"><img style="margin-right: 5px;" src="../icons/CopyCode.gif" />Copy</span>C#</div><div class="code"><pre xml:space="preserve">docNum</pre></div></span>. Once a document is
deleted it will not appear in TermDocs or TermPostitions enumerations.
Attempts to read its field with the {@link #document}
method will result in an error. The presence of this document may still be
reflected in the {@link #docFreq} statistic, though
this will be corrected eventually as the index is further modified.
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="b33902b6-7e77-fa3d-29e0-20f765d0abe8.htm">DeleteDocuments</a></td><td><div class="summary">Deletes all documents that have a given <span id="cbc_7" x-lang="CSharp" codeLanguage="CSharp"><div class="highlight-title"><span class="highlight-copycode" onkeypress="javascript:CopyColorizedCodeCheckKey(this.parentNode, event);" tabindex="0" onmouseover="CopyCodeChangeIcon(this)" onmouseout="CopyCodeChangeIcon(this)" onclick="javascript:CopyColorizedCode(this.parentNode);"><img style="margin-right: 5px;" src="../icons/CopyCode.gif" />Copy</span>C#</div><div class="code"><pre xml:space="preserve">term</pre></div></span> indexed.
This is useful if one uses a document field to hold a unique ID string for
the document. Then to delete such a document, one merely constructs a
term with the appropriate field and the unique ID string as its text and
passes it to this method.
See {@link #DeleteDocument(int)} for information about when this deletion will
become effective.
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="ced9d43d-adc3-8085-570f-74d77fdf2bf3.htm">Directory</a></td><td><div class="summary">Returns the directory this index resides in. </div> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="255e4f12-9c77-3a8f-506c-e3c629866508.htm">Dispose</a></td><td><div class="summary">
.NET
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="8a925160-1e7d-a51c-25d9-43eef6dc109c.htm">DocFreq</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="0d4b3180-8af6-53b3-df62-4a8e2b7edf57.htm">DoClose</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="1ee7882e-ac08-4289-2a1b-99169652c106.htm">DoCommit<span class="languageSpecificText"><span class="cs">()</span><span class="cpp">()</span><span class="nu">()</span><span class="fs">()</span></span></a></td><td> <font color="red"><b>Obsolete. </b></font> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="49c21b94-00fb-ce1d-61a9-3d5f7f33ab05.htm">DoCommit(IDictionary<span class="languageSpecificText"><span class="cs">&lt;</span><span class="vb">(Of </span><span class="cpp">&lt;</span><span class="fs">&lt;'</span><span class="nu">(</span></span>String, String<span class="languageSpecificText"><span class="cs">&gt;</span><span class="vb">)</span><span class="cpp">&gt;</span><span class="fs">&gt;</span><span class="nu">)</span></span>)</a></td><td><div class="summary"> Commit changes resulting from delete, undeleteAll, or setNorm operations
<p />
If an exception is hit, then either no changes or all changes will have been committed to the index (transactional
semantics).
</div> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="63c80382-dcd3-676f-e5fa-b80c26df9501.htm">Document(Int32)</a></td><td><div class="summary"> Returns the stored fields of the <span id="cbc_1" x-lang="CSharp" codeLanguage="CSharp"><div class="highlight-title"><span class="highlight-copycode" onkeypress="javascript:CopyColorizedCodeCheckKey(this.parentNode, event);" tabindex="0" onmouseover="CopyCodeChangeIcon(this)" onmouseout="CopyCodeChangeIcon(this)" onclick="javascript:CopyColorizedCode(this.parentNode);"><img style="margin-right: 5px;" src="../icons/CopyCode.gif" />Copy</span>C#</div><div class="code"><pre xml:space="preserve">n</pre></div></span><sup>th</sup><span id="cbc_2" x-lang="CSharp" codeLanguage="CSharp"><div class="highlight-title"><span class="highlight-copycode" onkeypress="javascript:CopyColorizedCodeCheckKey(this.parentNode, event);" tabindex="0" onmouseover="CopyCodeChangeIcon(this)" onmouseout="CopyCodeChangeIcon(this)" onclick="javascript:CopyColorizedCode(this.parentNode);"><img style="margin-right: 5px;" src="../icons/CopyCode.gif" />Copy</span>C#</div><div class="code"><pre xml:space="preserve">Document</pre></div></span> in this index.
<p /><b>NOTE:</b> for performance reasons, this method does not check if the
requested document is deleted, and therefore asking for a deleted document
may yield unspecified results. Usually this is not required, however you
can call {@link #IsDeleted(int)} with the requested document ID to verify
the document is not deleted.
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="9ab5bb89-e52a-2394-ba37-fc5b9f7cef6e.htm">Document(Int32, FieldSelector)</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="b8066ff6-8070-68fd-2ea2-ca18180d2348.htm">DoDelete</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="8071540b-1563-f627-945d-aa8b707e47c5.htm">DoSetNorm</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="c2420577-00a9-de99-36bd-929b2a9fd766.htm">DoUndeleteAll</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="aaf27130-533a-393c-374a-3a7de387e216.htm">EnsureOpen</a></td><td> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="http://msdn2.microsoft.com/en-us/library/bsc2ak47" target="_blank">Equals</a></td><td><div class="summary">Determines whether the specified <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a> is equal to the current <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.</div> (Inherited from <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.)</td></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="http://msdn2.microsoft.com/en-us/library/4k87zsw7" target="_blank">Finalize</a></td><td><div class="summary">Allows an <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a> to attempt to free resources and perform other cleanup operations before the <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a> is reclaimed by garbage collection.</div> (Inherited from <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="10038b7e-e490-139e-2dd9-3a53f08bf24a.htm">Flush<span class="languageSpecificText"><span class="cs">()</span><span class="cpp">()</span><span class="nu">()</span><span class="fs">()</span></span></a></td><td><div class="summary" /> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="ad6057dc-5132-a8e5-f58e-619b7f2c6cf8.htm">Flush(IDictionary<span class="languageSpecificText"><span class="cs">&lt;</span><span class="vb">(Of </span><span class="cpp">&lt;</span><span class="fs">&lt;'</span><span class="nu">(</span></span>String, String<span class="languageSpecificText"><span class="cs">&gt;</span><span class="vb">)</span><span class="cpp">&gt;</span><span class="fs">&gt;</span><span class="nu">)</span></span>)</a></td><td> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="3c785f06-a569-7886-a964-b57afec8092a.htm">GetCommitUserData</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="1773be10-2198-7f92-ba05-56aa0b36cb6c.htm">GetDeletesCacheKey</a></td><td> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="3f6781cc-ca2b-e105-4a4c-a895e4970b52.htm">GetDisableFakeNorms</a></td><td> <font color="red"><b>Obsolete. </b></font><div class="summary">Expert: Return the state of the flag that disables fakes norms in favor of representing the absence of field norms with null.</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="0ad6b62e-e0b4-5040-c2ce-8930f324b2ec.htm">GetFieldCacheKey</a></td><td> <font color="red"><b>Obsolete. </b></font><div class="summary">Expert </div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="94c0cfca-d522-318a-7fae-1d6eebc10f00.htm">GetFieldNames</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="http://msdn2.microsoft.com/en-us/library/zdee4b3y" target="_blank">GetHashCode</a></td><td><div class="summary">Serves as a hash function for a particular type. </div> (Inherited from <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="486ee958-5cfd-6d00-95c9-1543b9b9e504.htm">GetIndexCommit</a></td><td><div class="summary"> Expert: return the IndexCommit that this reader has opened.
<p /><p /><b>WARNING</b>: this API is new and experimental and may suddenly change.<p /></div> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="7d0fe5b0-7f54-4346-ce9b-75d021772bef.htm">GetRefCount</a></td><td><div class="summary">Expert: returns the current refCount for this reader </div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="a71b9960-7da7-8645-9582-259330902558.htm">GetSequentialSubReaders</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="594b5a66-59bd-24aa-bd01-b7a3e8175316.htm">GetTermFreqVector(Int32, TermVectorMapper)</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="09959cc8-8d46-e821-d953-2f1daf0e56f2.htm">GetTermFreqVector(Int32, String)</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="2ab4d942-b71e-e74e-9b92-a1c1c5de683b.htm">GetTermFreqVector(Int32, String, TermVectorMapper)</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="31979862-8604-7abc-3abe-d3cc2eaa10fd.htm">GetTermFreqVectors</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="c5e68fe3-3f3e-615b-be83-4064509a6f09.htm">GetTermInfosIndexDivisor</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="http://msdn2.microsoft.com/en-us/library/dfwy45w9" target="_blank">GetType</a></td><td><div class="summary">Gets the <a href="http://msdn2.microsoft.com/en-us/library/42892f65" target="_blank">Type</a> of the current instance.</div> (Inherited from <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="c615355f-3bc5-66b8-3acd-32c887d621a3.htm">GetUniqueTermCount</a></td><td><div class="summary">Returns the number of unique terms (across all fields)
in this reader.
This method returns long, even though internally
Lucene cannot handle more than 2^31 unique terms, for
a possible future when this limitation is removed.
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="e9964e08-dd2a-54c1-9e1c-8365cf23cc6d.htm">GetVersion</a></td><td><div class="summary">Version number when this IndexReader was opened. </div> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="21a77ce2-6fd0-e01e-243f-fde14794e3c0.htm">HasDeletions</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="a8c77d13-7062-25c2-fb36-1f671e5a2782.htm">HasNorms</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="37574514-623e-4a9a-fba0-f2e579f16eab.htm">IncRef</a></td><td><div class="summary"> Expert: increments the refCount of this IndexReader
instance. RefCounts are used to determine when a
reader can be closed safely, i.e. as soon as there are
no more references. Be sure to always call a
corresponding {@link #decRef}, in a finally clause;
otherwise the reader may never be closed. Note that
{@link #close} simply calls decRef(), which means that
the IndexReader will not really be closed until {@link
#decRef} has been called for all outstanding
references.
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="38d227e2-6281-add9-d7c2-5d246ccb5c26.htm">IsCurrent</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="76f21a0c-338c-5ea9-3a83-97f4263ba3cc.htm">IsDeleted</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="1a879364-0490-d72f-442d-a414bca81650.htm">IsOptimized</a></td><td><div class="summary"> Checks is the index is optimized (if it has a single segment and no deletions)</div> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="633c8349-2713-a1bf-d336-35640a1136df.htm">MaxDoc</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="http://msdn2.microsoft.com/en-us/library/57ctke0a" target="_blank">MemberwiseClone</a></td><td><div class="summary">Creates a shallow copy of the current <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.</div> (Inherited from <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="a7f8c4d3-f942-c400-c354-aee65b64978e.htm">Norms(String)</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="d3ba39fd-eb87-8f06-a05f-2b84e24f2615.htm">Norms(String, <span class="languageSpecificText"><span class="cpp">array&lt;</span></span>Byte<span class="languageSpecificText"><span class="cpp">&gt;</span><span class="cs">[]</span><span class="vb">()</span><span class="nu">[]</span><span class="fs">[]</span></span>, Int32)</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="c6f2b6e4-3396-147a-64aa-2c13016df327.htm">NumDeletedDocs</a></td><td><div class="summary">Returns the number of deleted documents. </div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="c77c3217-bb7d-8f28-adcd-80bcfca33f3b.htm">NumDocs</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="74e80f0c-4a71-ed99-6b54-2d09e5642445.htm">Reopen<span class="languageSpecificText"><span class="cs">()</span><span class="cpp">()</span><span class="nu">()</span><span class="fs">()</span></span></a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="bcd731c7-90bf-d1bb-da92-584a4bd4dc3f.htm">Reopen(Boolean)</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="358d8bad-00ec-db96-5c5a-86f254c214d2.htm">Reopen(IndexCommit)</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="6f1a5261-d9a8-cd93-a7cd-f3d6248ab08b.htm">SetDisableFakeNorms</a></td><td> <font color="red"><b>Obsolete. </b></font> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="5289917c-c054-81f2-d550-6ade409746cf.htm">SetNorm(Int32, String, Byte)</a></td><td><div class="summary">Expert: Resets the normalization factor for the named field of the named
document. The norm represents the product of the field's {@link
Lucene.Net.Documents.Fieldable#SetBoost(float) boost} and its {@link Similarity#LengthNorm(String,
int) length normalization}. Thus, to preserve the length normalization
values when resetting this, one should base the new value upon the old.
<b>NOTE:</b> If this field does not store norms, then
this method call will silently do nothing.
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="23c9103e-ed02-00eb-ef71-d96bc206225e.htm">SetNorm(Int32, String, Single)</a></td><td><div class="summary">Expert: Resets the normalization factor for the named field of the named
document.
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="50e341ca-03c1-5663-8344-d6df4b2701ae.htm">SetTermInfosIndexDivisor</a></td><td> <font color="red"><b>Obsolete. </b></font><div class="summary"><p />For IndexReader implementations that use
TermInfosReader to read terms, this sets the
indexDivisor to subsample the number of indexed terms
loaded into memory. This has the same effect as {@link
IndexWriter#setTermIndexInterval} except that setting
must be done at indexing time while this setting can be
set per reader. When set to N, then one in every
N*termIndexInterval terms in the index is loaded into
memory. By setting this to a value &gt; 1 you can reduce
memory usage, at the expense of higher latency when
loading a TermInfo. The default value is 1.<p /><b>NOTE:</b> you must call this before the term
index is loaded. If the index is already loaded,
an IllegalStateException is thrown.
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="6dedfa3a-0a02-f64e-8ef8-76c37aca9c39.htm">TermDocs<span class="languageSpecificText"><span class="cs">()</span><span class="cpp">()</span><span class="nu">()</span><span class="fs">()</span></span></a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="f8ca0439-87a5-a6a4-54d8-bc3a2e396c1c.htm">TermDocs(Term)</a></td><td><div class="summary">Returns an enumeration of all the documents which contain
<span id="cbc_3" x-lang="CSharp" codeLanguage="CSharp"><div class="highlight-title"><span class="highlight-copycode" onkeypress="javascript:CopyColorizedCodeCheckKey(this.parentNode, event);" tabindex="0" onmouseover="CopyCodeChangeIcon(this)" onmouseout="CopyCodeChangeIcon(this)" onclick="javascript:CopyColorizedCode(this.parentNode);"><img style="margin-right: 5px;" src="../icons/CopyCode.gif" />Copy</span>C#</div><div class="code"><pre xml:space="preserve">term</pre></div></span>. For each document, the document number, the frequency of
the term in that document is also provided, for use in
search scoring. If term is null, then all non-deleted
docs are returned with freq=1.
Thus, this method implements the mapping:
<p /><ul>
Term    =&gt;    &lt;docNum, freq&gt;<sup>*</sup></ul><p />The enumeration is ordered by document number. Each document number
is greater than all that precede it in the enumeration.
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="6346f3e6-be77-179f-9bf0-83312cbfbeba.htm">TermPositions<span class="languageSpecificText"><span class="cs">()</span><span class="cpp">()</span><span class="nu">()</span><span class="fs">()</span></span></a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="9ca33a95-2623-6deb-cb0d-8c4c209da970.htm">TermPositions(Term)</a></td><td><div class="summary">Returns an enumeration of all the documents which contain
<span id="cbc_4" x-lang="CSharp" codeLanguage="CSharp"><div class="highlight-title"><span class="highlight-copycode" onkeypress="javascript:CopyColorizedCodeCheckKey(this.parentNode, event);" tabindex="0" onmouseover="CopyCodeChangeIcon(this)" onmouseout="CopyCodeChangeIcon(this)" onclick="javascript:CopyColorizedCode(this.parentNode);"><img style="margin-right: 5px;" src="../icons/CopyCode.gif" />Copy</span>C#</div><div class="code"><pre xml:space="preserve">term</pre></div></span>. For each document, in addition to the document number
and frequency of the term in that document, a list of all of the ordinal
positions of the term in the document is available. Thus, this method
implements the mapping:
<p /><ul>
Term    =&gt;    &lt;docNum, freq,
&lt;pos<sub>1</sub>, pos<sub>2</sub>, ...
pos<sub>freq-1</sub>&gt;
&gt;<sup>*</sup></ul><p /> This positional information facilitates phrase and proximity searching.
<p />The enumeration is ordered by document number. Each document number is
greater than all that precede it in the enumeration.
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="fcccaae3-d7bf-cb22-bb7e-657ce6c91d2c.htm">Terms<span class="languageSpecificText"><span class="cs">()</span><span class="cpp">()</span><span class="nu">()</span><span class="fs">()</span></span></a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="7a3e8242-f639-9357-b7bc-5ddde5584edc.htm">Terms(Term)</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="http://msdn2.microsoft.com/en-us/library/7bxwbwt2" target="_blank">ToString</a></td><td><div class="summary">Returns a <a href="http://msdn2.microsoft.com/en-us/library/s1wwdcbf" target="_blank">String</a> that represents the current <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.</div> (Inherited from <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="b9cc5c26-8b51-c006-5c41-a1c1be78385d.htm">UndeleteAll</a></td><td><div class="summary">Undeletes all documents currently marked as deleted in this index.
</div> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr></table></div><h1 class="heading"><span onclick="ExpandCollapse(fieldTableToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(fieldTableToggle, event)" tabindex="0"><img id="fieldTableToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />Fields</span></h1><div id="fieldTableSection" class="section" name="collapseableSection" style=""><table id="memberList" class="members" frame="lhs" cellpadding="2"><col width="10%" /><tr><th class="iconColumn">
 
</th><th class="nameColumn">Name</th><th class="descriptionColumn">Description</th></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protfield.gif" alt="Protected field" title="Protected field" /></td><td><a href="c55bad53-f761-2be9-066a-b30bfccdee60.htm">directory</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protfield.gif" alt="Protected field" title="Protected field" /></td><td><a href="baed67bb-7d76-3d8f-4050-f3a9ce3abe90.htm">hasChanges</a></td><td> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protfield.gif" alt="Protected field" title="Protected field" /></td><td><a href="2ffdcb8d-e7c9-8ac0-1c20-959636320e5d.htm">readOnly</a></td><td> (Inherited from <a href="9a67cddc-b241-b55c-08e0-e7af49fc5188.htm">DirectoryReader</a>.)</td></tr></table></div><h1 class="heading"><span onclick="ExpandCollapse(propertyTableToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(propertyTableToggle, event)" tabindex="0"><img id="propertyTableToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />Properties</span></h1><div id="propertyTableSection" class="section" name="collapseableSection" style=""><table id="memberList" class="members" frame="lhs" cellpadding="2"><col width="10%" /><tr><th class="iconColumn">
 
</th><th class="nameColumn">Name</th><th class="descriptionColumn">Description</th></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubproperty.gif" alt="Public property" title="Public property" /></td><td><a href="e5054931-94ad-a810-ae8f-f391f2197016.htm">hasChanges_ForNUnit</a></td><td> (Inherited from <a href="4919df1c-c434-d92d-ae43-1f44d0246cd4.htm">IndexReader</a>.)</td></tr></table></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="fc867324-66cc-f932-278b-340ae9751910.htm">ReadOnlyDirectoryReader 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>