/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2013, 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 jakarta.batch.api.chunk.ItemReader;
import jakarta.inject.Named;

@Named("integerArrayReader")
public final class IntegerArrayReader extends IntegerArrayReaderWriterBase implements ItemReader {
    @Override
    public Object readItem() throws Exception {
        if (cursor > partitionEnd || cursor < partitionStart) {
            return null;
        }
        if (cursor == readerFailAt) {
            throw new ArithmeticException("Failing at reader.fail.at point " + readerFailAt);
        }
        final Integer result = data[cursor];
        cursor++;
        return result;
    }

    @Override
    protected void initData() {
        super.initData();
        for (int i = 0; i < dataCount; i++) {
            data[i] = i;
        }
        //position the cursor according to partition start
        cursor = partitionStart;
    }
}
