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evolvedbinary / elemental / 982

29 Apr 2025 08:34PM UTC coverage: 56.409% (+0.007%) from 56.402%
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50.0
/exist-core/src/main/java/org/exist/xquery/functions/system/GetUptime.java
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/*
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 * Elemental
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 * Copyright (C) 2024, Evolved Binary Ltd
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 *
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 * admin@evolvedbinary.com
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 * https://www.evolvedbinary.com | https://www.elemental.xyz
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 *
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 * Use of this software is governed by the Business Source License 1.1
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 * included in the LICENSE file and at www.mariadb.com/bsl11.
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 *
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 * Change Date: 2028-04-27
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 *
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 * On the date above, in accordance with the Business Source License, use
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 * of this software will be governed by the Apache License, Version 2.0.
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 *
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 * Additional Use Grant: Production use of the Licensed Work for a permitted
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 * purpose. A Permitted Purpose is any purpose other than a Competing Use.
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 * A Competing Use means making the Software available to others in a commercial
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 * product or service that: substitutes for the Software; substitutes for any
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 * other product or service we offer using the Software that exists as of the
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 * date we make the Software available; or offers the same or substantially
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 * similar functionality as the Software.
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 *
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 * NOTE: Parts of this file contain code from 'The eXist-db Authors'.
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 *       The original license header is included below.
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 *
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 * =====================================================================
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 *
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 * eXist-db Open Source Native XML Database
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 * Copyright (C) 2001 The eXist-db Authors
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 *
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 * info@exist-db.org
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 * http://www.exist-db.org
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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package org.exist.xquery.functions.system;
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import java.util.Calendar;
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import javax.xml.datatype.XMLGregorianCalendar;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import org.exist.dom.QName;
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import org.exist.xquery.BasicFunction;
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import org.exist.xquery.Cardinality;
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import org.exist.xquery.FunctionSignature;
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import org.exist.xquery.XPathException;
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import org.exist.xquery.XQueryContext;
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import org.exist.xquery.value.DayTimeDurationValue;
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import org.exist.xquery.value.FunctionReturnSequenceType;
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import org.exist.xquery.value.Sequence;
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import org.exist.xquery.value.Type;
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/**
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 * Return the duration since eXist was started
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 * 
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 * @author <a href="mailto:adam@existsolutions.com">Adam Retter</a>
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 */
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public class GetUptime extends BasicFunction {
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    protected final static Logger logger = LogManager.getLogger(GetUptime.class);
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    public final static FunctionSignature signature = new FunctionSignature(
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        new QName("get-uptime", SystemModule.NAMESPACE_URI, SystemModule.PREFIX),
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        "Returns the time since Elemental was started. The value is stable over the lifetime of a query.",
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        FunctionSignature.NO_ARGS,
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        new FunctionReturnSequenceType(Type.DAY_TIME_DURATION, Cardinality.EXACTLY_ONE, "the duration since Elemental was started")
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    );
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    public GetUptime(XQueryContext context) {
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        super(context, signature);
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    }
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    /* (non-Javadoc)
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     * @see org.exist.xquery.BasicFunction#eval(org.exist.xquery.value.Sequence[], org.exist.xquery.value.Sequence)
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     */
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    public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
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        final Calendar startupTime = context.getBroker().getBrokerPool().getStartupTime();
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        final XMLGregorianCalendar xmlNow = context.getCalendar();
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        final Calendar now = xmlNow.toGregorianCalendar();
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        final long duration = now.getTimeInMillis() - startupTime.getTimeInMillis();
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        return new DayTimeDurationValue(this, duration);
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    }
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}
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