org.marc4j.samples.DataFieldExample Maven / Gradle / Ivy

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/**
 * Copyright (C) 2002-2006 Bas Peters
 *
 * This file is part of MARC4J
 *
 * MARC4J 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.
 *
 * MARC4J 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 MARC4J; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.marc4j.samples;

import java.io.FileInputStream;
import java.io.InputStream;
import java.util.Iterator;
import java.util.List;

import org.marc4j.MarcReader;
import org.marc4j.MarcStreamReader;
import org.marc4j.marc.DataField;
import org.marc4j.marc.Record;
import org.marc4j.marc.Subfield;

/**
 * Read data fields.
 *
 * @author Bas Peters
 */
public class DataFieldExample {

    private DataFieldExample() {
    }

    /**
     * The main class for DataFieldExample.
     *
     * @param args
     * @throws Exception
     */
    public static void main(final String args[]) throws Exception {
        final InputStream input = new FileInputStream("src/test/resources/summerland.mrc");
        final MarcReader reader = new MarcStreamReader(input);

        while (reader.hasNext()) {
            final Record record = reader.next();

            // get the first field occurrence for a given tag
            DataField dataField = (DataField) record.getVariableField("245");
            System.out.println(dataField.toString() + '\n');

            // get all occurences for a particular tag
            List dataFields = record.getVariableFields("650");
            Iterator i = dataFields.iterator();

            while (i.hasNext()) {
                dataField = (DataField) i.next();
                System.out.println(dataField.toString());
            }

            System.out.print('\n');

            // get all occurences for a given list of tags
            final String[] tags = { "010", "100", "245", "250", "260", "300" };
            dataFields = record.getVariableFields(tags);
            i = dataFields.iterator();

            while (i.hasNext()) {
                dataField = (DataField) i.next();
                System.out.println(dataField.toString());
            }

            System.out.print('\n');

            // read indicators and subfields
            dataField = (DataField) record.getVariableField("245");

            final String tag = dataField.getTag();
            final char ind1 = dataField.getIndicator1();
            final char ind2 = dataField.getIndicator2();

            System.out.println("Tag: " + tag + " Indicator 1: " + ind1 + " Indicator 2: " + ind2);

            final List subfields = dataField.getSubfields();
            i = subfields.iterator();

            while (i.hasNext()) {
                final Subfield subfield = (Subfield) i.next();
                final char code = subfield.getCode();
                final String data = subfield.getData();

                System.out.println("Subfield code: " + code + " Data element: " + data);
            }

            System.out.print('\n');

            // retrieve the first occurrence of subfield with code 'a'
            final Subfield subfield = dataField.getSubfield('a');
            System.out.println("Title proper: " + subfield.getData());

        }

    }

}