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/*
* @(#)NextDocGenerator.java 1.6 06/10/30
*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
/**
* @date 1/13/98
* @author Jacek R. Ambroziak
* @group Sun Microsystems Laboratories
*/
package com.sun.java.help.search;
class NextDocGenerator
{
private int _document;
private final int _concept;
private final int _queryMask;
private final ConceptData _terms;
private final NonnegativeIntegerGenerator _iterator;
public NextDocGenerator(ConceptData cd, SearchEnvironment env)
{
_document = 0;
_concept = cd.getConcept();
_queryMask = cd.getQueryMask();
_terms = cd;
_iterator = env.getDocumentIterator(_concept);
}
public int first() throws Exception {
return _document =
_iterator != null ? _iterator.first() : NonnegativeIntegerGenerator.END;
}
public int next() throws Exception {
return _document = _iterator.next();
}
public int getDocument() {
return _document;
}
public int getConcept() {
return _concept;
}
public ConceptData getTerms() {
return _terms;
}
public int getQueryMask() {
return _queryMask;
}
// for sorting
public boolean compareWith(NextDocGenerator other)
{
return _document > other._document
|| _document == other._document && _concept > other._concept;
}
public boolean smallerThan(NextDocGenerator other)
{
return _document < other._document
|| _document == other._document && _concept < other._concept;
}
}
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