multireader.html

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numDocs</H3>
<PRE>
public int <B>numDocs</B>()</PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></B></DD>
<DD>Returns the number of documents in this index.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html#numDocs()">numDocs</A></CODE> in class <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="maxDoc()"><!-- --></A><H3>
maxDoc</H3>
<PRE>
public int <B>maxDoc</B>()</PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></B></DD>
<DD>Returns one greater than the largest possible document number.
 This may be used to, e.g., determine how big to allocate an array which
 will have an element for every document number in an index.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html#maxDoc()">maxDoc</A></CODE> in class <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="document(int, org.apache.lucene.document.FieldSelector)"><!-- --></A><H3>
document</H3>
<PRE>
public <A HREF="../../../../org/apache/lucene/document/Document.html" title="class in org.apache.lucene.document">Document</A> <B>document</B>(int&nbsp;n,
                         <A HREF="../../../../org/apache/lucene/document/FieldSelector.html" title="interface in org.apache.lucene.document">FieldSelector</A>&nbsp;fieldSelector)
                  throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></B></DD>
<DD>Get the <A HREF="../../../../org/apache/lucene/document/Document.html" title="class in org.apache.lucene.document"><CODE>Document</CODE></A> at the <code>n</code><sup>th</sup> position. The <A HREF="../../../../org/apache/lucene/document/FieldSelector.html" title="interface in org.apache.lucene.document"><CODE>FieldSelector</CODE></A>
 may be used to determine what <A HREF="../../../../org/apache/lucene/document/Field.html" title="class in org.apache.lucene.document"><CODE>Field</CODE></A>s to load and how they should be loaded.
 
 <b>NOTE:</b> If this Reader (more specifically, the underlying <CODE>FieldsReader</CODE> is closed before the lazy <A HREF="../../../../org/apache/lucene/document/Field.html" title="class in org.apache.lucene.document"><CODE>Field</CODE></A> is
 loaded an exception may be thrown.  If you want the value of a lazy <A HREF="../../../../org/apache/lucene/document/Field.html" title="class in org.apache.lucene.document"><CODE>Field</CODE></A> to be available after closing you must
 explicitly load it or fetch the Document again with a new loader.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html#document(int, org.apache.lucene.document.FieldSelector)">document</A></CODE> in class <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>n</CODE> - Get the document at the <code>n</code><sup>th</sup> position<DD><CODE>fieldSelector</CODE> - The <A HREF="../../../../org/apache/lucene/document/FieldSelector.html" title="interface in org.apache.lucene.document"><CODE>FieldSelector</CODE></A> to use to determine what Fields should be loaded on the Document.  May be null, in which case all Fields will be loaded.
<DT><B>Returns:</B><DD>The stored fields of the <A HREF="../../../../org/apache/lucene/document/Document.html" title="class in org.apache.lucene.document"><CODE>Document</CODE></A> at the nth position
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - If there is a problem reading this document<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/lucene/document/Fieldable.html" title="interface in org.apache.lucene.document"><CODE>Fieldable</CODE></A>, 
<A HREF="../../../../org/apache/lucene/document/FieldSelector.html" title="interface in org.apache.lucene.document"><CODE>FieldSelector</CODE></A>, 
<A HREF="../../../../org/apache/lucene/document/SetBasedFieldSelector.html" title="class in org.apache.lucene.document"><CODE>SetBasedFieldSelector</CODE></A>, 
<A HREF="../../../../org/apache/lucene/document/LoadFirstFieldSelector.html" title="class in org.apache.lucene.document"><CODE>LoadFirstFieldSelector</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="isDeleted(int)"><!-- --></A><H3>
isDeleted</H3>
<PRE>
public boolean <B>isDeleted</B>(int&nbsp;n)</PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></B></DD>
<DD>Returns true if document <i>n</i> has been deleted
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html#isDeleted(int)">isDeleted</A></CODE> in class <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="hasDeletions()"><!-- --></A><H3>
hasDeletions</H3>
<PRE>
public boolean <B>hasDeletions</B>()</PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></B></DD>
<DD>Returns true if any documents have been deleted
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html#hasDeletions()">hasDeletions</A></CODE> in class <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="doDelete(int)"><!-- --></A><H3>
doDelete</H3>
<PRE>
protected void <B>doDelete</B>(int&nbsp;n)
                 throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></B></DD>
<DD>Implements deletion of the document numbered <code>docNum</code>.
 Applications should call <A HREF="../../../../org/apache/lucene/index/IndexReader.html#deleteDocument(int)"><CODE>IndexReader.deleteDocument(int)</CODE></A> or <A HREF="../../../../org/apache/lucene/index/IndexReader.html#deleteDocuments(org.apache.lucene.index.Term)"><CODE>IndexReader.deleteDocuments(Term)</CODE></A>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html#doDelete(int)">doDelete</A></CODE> in class <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="doUndeleteAll()"><!-- --></A><H3>
doUndeleteAll</H3>
<PRE>
protected void <B>doUndeleteAll</B>()
                      throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></B></DD>
<DD>Implements actual undeleteAll() in subclass.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html#doUndeleteAll()">doUndeleteAll</A></CODE> in class <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="hasNorms(java.lang.String)"><!-- --></A><H3>
hasNorms</H3>
<PRE>
public boolean <B>hasNorms</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;field)
                 throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></B></DD>
<DD>Returns true if there are norms stored for this field.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html#hasNorms(java.lang.String)">hasNorms</A></CODE> in class <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="norms(java.lang.String)"><!-- --></A><H3>
norms</H3>
<PRE>
public byte[] <B>norms</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;field)
             throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></B></DD>
<DD>Returns the byte-encoded normalization factor for the named field of
 every document.  This is used by the search code to score documents.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html#norms(java.lang.String)">norms</A></CODE> in class <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE><DT><B>See Also:</B><DD><A HREF="../../../../org/apache/lucene/document/AbstractField.html#setBoost(float)"><CODE>AbstractField.setBoost(float)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="norms(java.lang.String, byte[], int)"><!-- --></A><H3>
norms</H3>
<PRE>
public void <B>norms</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;field,
                  byte[]&nbsp;result,
                  int&nbsp;offset)
           throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></B></DD>
<DD>Reads the byte-encoded normalization factor for the named field of every
  document.  This is used by the search code to score documents.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html#norms(java.lang.String, byte[], int)">norms</A></CODE> in class <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE><DT><B>See Also:</B><DD><A HREF="../../../../org/apache/lucene/document/AbstractField.html#setBoost(float)"><CODE>AbstractField.setBoost(float)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="doSetNorm(int, java.lang.String, byte)"><!-- --></A><H3>
doSetNorm</H3>
<PRE>
protected void <B>doSetNorm</B>(int&nbsp;n,
                         <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;field,
                         byte&nbsp;value)
                  throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></B></DD>
<DD>Implements setNorm in subclass.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html#doSetNorm(int, java.lang.String, byte)">doSetNorm</A></CODE> in class <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="terms()"><!-- --></A><H3>
terms</H3>
<PRE>
public <A HREF="../../../../org/apache/lucene/index/TermEnum.html" title="class in org.apache.lucene.index">TermEnum</A> <B>terms</B>()
               throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from class: <CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></CODE></B></DD>
<DD>Returns an enumeration of all the terms in the index.