pl.edu.icm.coansys.source.MapDocProtosToSourceBasIds.java Source code

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Here is the source code for pl.edu.icm.coansys.source.MapDocProtosToSourceBasIds.java

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/*
 * This file is part of CoAnSys project.
 * Copyright (c) 2012-2015 ICM-UW
 * 
 * CoAnSys is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
    
 * CoAnSys 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 Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with CoAnSys. If not, see <http://www.gnu.org/licenses/>.
 */

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package pl.edu.icm.coansys.source;

import java.io.IOException;
import java.nio.charset.Charset;
import java.util.UUID;
import org.apache.commons.lang.StringUtils;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.mapreduce.Mapper;
import pl.edu.icm.coansys.models.DocumentProtos;

/**
 *
 * @author kura
 */
public class MapDocProtosToSourceBasIds extends Mapper<Writable, BytesWritable, Text, BytesWritable> {

    @Override
    protected void map(Writable key, BytesWritable value, Context context)
            throws IOException, InterruptedException {
        DocumentProtos.DocumentWrapper docWrapper = DocumentProtos.DocumentWrapper.parseFrom(value.copyBytes());
        String issn = null;
        String isbn = null;
        if (docWrapper.hasDocumentMetadata() && docWrapper.getDocumentMetadata().hasBasicMetadata()) {
            DocumentProtos.BasicMetadataOrBuilder bm = docWrapper.getDocumentMetadata().getBasicMetadataOrBuilder();
            if (bm.hasParentType()) {
                if (bm.getParentType() == DocumentProtos.BasicMetadata.ParentType.BLOG) {
                    // No blog disambiguation yet
                    return;
                }
            }
            if (bm.hasIssn()) {
                issn = bm.getIssn();
            }
            if (bm.hasIsbn()) {
                isbn = bm.getIsbn();
            }
            if (StringUtils.isBlank(isbn)) {
                isbn = null;
            }
            if (StringUtils.isBlank(issn)) {
                issn = null;
            }
        }

        if (issn != null) {
            String id = issn.replaceAll("\\W", "").toUpperCase();
            // issn ni a ma znakw spoza 7 bitow
            UUID uuid = UUID.nameUUIDFromBytes(("issn" + id).getBytes(Charset.forName("US-ASCII")));

            context.write(new Text(uuid.toString()), value);
        }
        if (isbn != null) {
            String id = isbn.replaceAll("\\W", "").toUpperCase();
            // issn ni a ma znakw spoza 7 bitow
            UUID uuid = UUID.nameUUIDFromBytes(("isbn" + id).getBytes(Charset.forName("US-ASCII")));
            context.write(new Text(uuid.toString()), value);
        }

    }

}