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UnpackPush.java
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/
UnpackPush.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 util;
import java.util.List;
import ca.uqac.lif.cep.Connector;
import ca.uqac.lif.cep.Pushable;
import ca.uqac.lif.cep.UtilityMethods;
import ca.uqac.lif.cep.io.Print;
import ca.uqac.lif.cep.util.Lists;
/**
* See the effect of using the
* {@link ca.uqac.lif.cep.util.Lists.Unpack Unpack} processor in push mode.
* Graphically, this chain of processors can be represented as:
* <p>
* <img src="{@docRoot}/doc-files/util/UnpackPush.png" alt="Processor graph">
* <p>
* The output of this program is:
* <pre>
* Before first push
* 1,2,3,4,
* Before second push
* 5,6,7,
* After second push
* </pre>
*
* @author Sylvain Hallé
* @difficulty Easy
*/
public class UnpackPush
{
public static void main(String[] args)
{
Lists.Unpack unpack = new Lists.Unpack();
Print print = new Print();
Connector.connect(unpack, print);
Pushable p = unpack.getPushableInput();
///
List<Object> list = UtilityMethods.createList(1, 2, 3, 4);
System.out.println("Before first push");
p.push(list);
list = UtilityMethods.createList(5, 6, 7);
System.out.println("\nBefore second push");
p.push(list);
System.out.println("\nAfter second push");
///
}
}