/*
* JBoss, Home of Professional Open Source.
* Copyright 2015, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This 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 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.test.integration.batch.common;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.batch.api.BatchProperty;
import javax.batch.api.chunk.ItemReader;
import javax.inject.Inject;
import javax.inject.Named;
/**
* @author <a href="mailto:jperkins@redhat.com">James R. Perkins</a>
*/
@Named
public class CountingItemReader implements ItemReader {
@Inject
@BatchProperty(name = "reader.start")
private int start;
@Inject
@BatchProperty(name = "reader.end")
private int end;
private final AtomicInteger counter = new AtomicInteger();
@Override
public void open(final Serializable checkpoint) throws Exception {
if (end == 0) {
end = 10;
}
counter.set(start);
}
@Override
public void close() throws Exception {
counter.set(0);
}
@Override
public Object readItem() throws Exception {
final int result = counter.incrementAndGet();
if (result > end) {
return null;
}
return result;
}
@Override
public Serializable checkpointInfo() throws Exception {
return counter.get();
}
}