PVASimpleExample.java

/**
 * Copyright (C) 2010-14 diirt developers. See COPYRIGHT.TXT
 * All rights reserved. Use is subject to license terms. See LICENSE.TXT
 */
package org.diirt.support.pva;

import static org.diirt.datasource.ExpressionLanguage.channel;
import org.diirt.datasource.PVManager;
import org.diirt.datasource.PVReader;
import org.diirt.datasource.PVReaderEvent;
import org.diirt.datasource.PVReaderListener;
import static org.diirt.util.time.TimeDuration.ofHertz;;

public class PVASimpleExample {

    public static void main(String[] args) throws InterruptedException
    {
        PVManager.setDefaultDataSource(new PVADataSource());
        PVReader<Object> reader = PVManager.read(channel("testCounter")).
                readListener(new PVReaderListener<Object>() {

                    @Override
                    public void pvChanged(PVReaderEvent<Object> event) {
                        if (event.isValueChanged())
                            System.out.println(event.getPvReader().getValue());
                        else
                            System.out.println(event.toString());

                    }
                }).maxRate(ofHertz(10));

        // forever
        while (System.currentTimeMillis() != 0)
            Thread.sleep(Long.MAX_VALUE);

        reader.close();
    }

}