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PullSoft.java
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PullSoft.java
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/*
BeepBeep, an event stream processor
Copyright (C) 2008-2018 Sylvain Hallé
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 3 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, see <http://www.gnu.org/licenses/>.
*/
package basic;
import ca.uqac.lif.cep.Connector;
import ca.uqac.lif.cep.Pullable;
import ca.uqac.lif.cep.tmf.CountDecimate;
import ca.uqac.lif.cep.tmf.QueueSource;
/**
* Illustration of the difference between using
* {@link ca.uqac.lif.cep.Pullable#pull() pull()} and
* {@link ca.uqac.lif.cep.Pullable#pullSoft() pullSoft()} on a
* {@link ca.uqac.lif.cep.Pullable Pullable} object.
* In this example, we use the "soft" way of fetching
* objects from a Pullable.
*
* @author Sylvain Hallé
* @see PullHard
*/
public class PullSoft
{
public static void main(String[] args)
{
///
QueueSource source = new QueueSource().loop(false);
source.setEvents(0, 1, 2, 3);
CountDecimate decim = new CountDecimate(2);
Connector.connect(source, decim);
Pullable p = decim.getPullableOutput();
///
//!
for (int i = 0; i < 5; i++)
{
Pullable.NextStatus s = p.hasNextSoft();
System.out.println(s);
if (s == Pullable.NextStatus.YES)
{
System.out.println(p.pullSoft());
}
}
//!
}
}