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ParallelReader (Lucene 2.1.0 API)
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SUMMARY: <A HREF="#nested_classes_inherited_from_class_org.apache.lucene.index.IndexReader">NESTED</A> | <A HREF="#fields_inherited_from_class_org.apache.lucene.index.IndexReader">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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org.apache.lucene.index</FONT>
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Class ParallelReader</H2>
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<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">org.apache.lucene.index.IndexReader</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><B>org.apache.lucene.index.ParallelReader</B>
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<DT>public class <B>ParallelReader</B><DT>extends <A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></DL>
<P>
An IndexReader which reads multiple, parallel indexes. Each index added must have the same number of documents, but typically each contains different fields. Each document contains the union of the fields of all documents with the same document number. When searching, matches for a query term are from the first index added that has the field. <p>This is useful, e.g., with collections that have large fields which change rarely and small fields that change more frequently. The smaller fields may be re-indexed in a new index and both indexes may be searched together. <p><strong>Warning:</strong> It is up to you to make sure all indexes are created and modified the same way. For example, if you add documents to one index, you need to add the same documents in the same order to the other indexes. <em>Failure to do so will result in undefined behavior</em>.
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<TD><B>Nested classes inherited from class org.apache.lucene.index.<A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></B></TD>
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<TD><B>Fields inherited from class org.apache.lucene.index.<A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A></B></TD>
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<TD><CODE><A HREF="../../../../org/apache/lucene/index/IndexReader.html#deleter">deleter</A></CODE></TD>
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<TD><CODE><B><A HREF="../../../../org/apache/lucene/index/ParallelReader.html#ParallelReader()">ParallelReader</A></B>()</CODE>
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Construct a ParallelReader.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/index/ParallelReader.html#add(org.apache.lucene.index.IndexReader)">add</A></B>(<A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A> reader)</CODE>
<BR>
Add an IndexReader.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/index/ParallelReader.html#add(org.apache.lucene.index.IndexReader, boolean)">add</A></B>(<A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A> reader, boolean ignoreStoredFields)</CODE>
<BR>
Add an IndexReader whose stored fields will not be returned.</TD>
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<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/index/ParallelReader.html#docFreq(org.apache.lucene.index.Term)">docFreq</A></B>(<A HREF="../../../../org/apache/lucene/index/Term.html" title="class in org.apache.lucene.index">Term</A> term)</CODE>
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Returns the number of documents containing the term <code>t</code>.</TD>
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<CODE>protected void</CODE></FONT></TD>
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