/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-04 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 program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
package org.exist.xquery.pragmas;
import org.exist.xquery.*;
import org.apache.log4j.Logger;
import org.exist.Namespaces;
import org.exist.dom.QName;
import org.exist.xquery.util.ExpressionDumper;
public class TimerPragma extends Pragma {
public final static QName TIMER_PRAGMA = new QName("timer", Namespaces.EXIST_NS, "exist");
private Logger log = null;
private long start;
private boolean verbose = true;
public TimerPragma(QName qname, String contents) throws XPathException {
super(qname, contents);
if (contents != null && contents.length() > 0) {
String options[] = Option.tokenize(contents);
for (int i = 0; i < options.length; i++) {
String param[] = Option.parseKeyValuePair(options[i]);
if (param == null)
throw new XPathException("Invalid content found for pragma " + TIMER_PRAGMA.getStringValue() +
": " + contents);
if ("verbose".equals(param[0])) {
verbose = "yes".equals(param[1]);
} else if ("logger".equals(param[0])) {
log = Logger.getLogger(param[1]);
}
}
}
if (log == null)
log = Logger.getLogger(TimerPragma.class);
}
public void after(XQueryContext context, Expression expression) throws XPathException {
long elapsed = System.currentTimeMillis() - start;
if (log.isTraceEnabled()) {
if (verbose)
log.trace("Elapsed: " + elapsed + "ms. for expression:\n" + ExpressionDumper.dump(expression));
else
log.trace("Elapsed: " + elapsed + "ms.");
}
}
public void before(XQueryContext context, Expression expression) throws XPathException {
start = System.currentTimeMillis();
}
}