/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-09 The eXist Project
* http://exist-db.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* $Id$
*/
package org.exist.xquery.functions.system;
import org.apache.log4j.Logger;
import org.exist.dom.QName;
import org.exist.storage.statistics.IndexStatistics;
import org.exist.storage.statistics.IndexStatisticsWorker;
import org.exist.xquery.BasicFunction;
import org.exist.xquery.Cardinality;
import org.exist.xquery.FunctionSignature;
import org.exist.xquery.XPathException;
import org.exist.xquery.XQueryContext;
import org.exist.xquery.value.Sequence;
import org.exist.xquery.value.SequenceType;
import org.exist.xquery.value.Type;
public class UpdateStatistics extends BasicFunction {
protected final static Logger logger = Logger.getLogger(UpdateStatistics.class);
public final static FunctionSignature signature = new FunctionSignature(
new QName("update-statistics", SystemModule.NAMESPACE_URI, SystemModule.PREFIX),
"This function is part of the unfinished index statistics module, which is not " +
"yet usable in a normal eXist setup. update-statistics rebuilds index statistics " +
"for the entire database.",
null,
new SequenceType(Type.EMPTY, Cardinality.ZERO));
public UpdateStatistics(XQueryContext context) {
super(context, signature);
}
public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
IndexStatisticsWorker index = (IndexStatisticsWorker)
context.getBroker().getIndexController().getWorkerByIndexId(IndexStatistics.ID);
if (index != null) {
index.updateIndex(context.getBroker());
} else {
logger.error("The module may not be enabled!");
}
return Sequence.EMPTY_SEQUENCE;
}
}