net.sf.jasperreports.engine.fill.JRContinuationSubreportRunner.java Source code

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Here is the source code for net.sf.jasperreports.engine.fill.JRContinuationSubreportRunner.java

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/*
 * JasperReports - Free Java Reporting Library.
 * Copyright (C) 2001 - 2019 TIBCO Software Inc. All rights reserved.
 * http://www.jaspersoft.com
 *
 * Unless you have purchased a commercial license agreement from Jaspersoft,
 * the following license terms apply:
 *
 * This program is part of JasperReports.
 *
 * JasperReports 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 3 of the License, or
 * (at your option) any later version.
 *
 * JasperReports 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 JasperReports. If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.jasperreports.engine.fill;

import org.apache.commons.javaflow.api.Continuation;
import org.apache.commons.javaflow.api.continuable;

/**
 * Implemetation of {@link net.sf.jasperreports.engine.fill.JRSubreportRunner JRSubreportRunner}
 * using <a href="http://jakarta.apache.org/commons/sandbox/javaflow/">Javaflow</a> continuations.
 * 
 * @author Lucian Chirita (lucianc@users.sourceforge.net)
 */
public class JRContinuationSubreportRunner extends JRSubreportRunnable implements JRSubreportRunner {
    private Continuation continuation;

    public JRContinuationSubreportRunner(JRFillSubreport fillSubreport) {
        super(fillSubreport);
    }

    @Override
    public boolean isFilling() {
        return continuation != null;
    }

    @Override
    public JRSubreportRunResult start() {
        continuation = Continuation.startWith(this);
        return runResult();
    }

    @Override
    public JRSubreportRunResult resume() {
        continuation = continuation.resume(null);
        return runResult();
    }

    @Override
    public void reset() {
        continuation = null;
    }

    @Override
    public void cancel() {
    }

    @Override
    @continuable
    public void suspend() {
        Continuation.suspend();
    }

    @Override
    public void abort() {
        //NOP
    }
}