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/*
* @(#)ConceptGroupGenerator.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;
import java.io.InputStream;
class ConceptGroupGenerator implements CompressorIterator
{
private static final int NConceptsInGroup =
DocumentCompressor.NConceptsInGroup;
private static final int BitsInLabel =
DocumentCompressor.BitsInLabel;
private int _last;
private ConceptData[] _table;
private Decompressor _bits;
private int _k1;
private final int _k2 = BitsInLabel;
private ConceptData _cData;
public ConceptGroupGenerator()
{
_k1 = 0;
_table = new ConceptData[NConceptsInGroup];
_last = 0;
_bits = null;
}
public ConceptGroupGenerator(byte[] bytes, int index, int k)
{
_k1 = k;
_table = new ConceptData[NConceptsInGroup];
_last = 0;
_bits = new ByteArrayDecompressor(bytes, index);
}
public void init(byte[] bytes, int index, int k)
{
_k1 = k;
_bits = new ByteArrayDecompressor(bytes, index);
_last = 0;
for (int i = 0; i < NConceptsInGroup; i++)
_table[i] = null;
}
public void addTerms(int index, ConceptData terms) {
_table[index] = terms;
}
public int decodeConcepts(int k, int shift, int[] concepts) throws Exception {
return _bits.ascendingDecode(k, shift, concepts);
}
public int position() {
return _last;
}
public void value(int value) {
_last += value;
}
boolean next() throws Exception
{
try {
while (_bits.readNext(_k1, this))
if ((_cData = _table[_bits.read(_k2)]) != null)
return true;
return false;
}
catch (Exception e) {
e.printStackTrace();
System.err.println(_bits);
System.err.println(_table);
throw e;
}
}
public void generateFillers(RoleFiller[] array) {
_cData.generateFillers(array, _last);
}
}
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