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252 lines
10 KiB
252 lines
10 KiB
// OAIPMHReader
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// (C) 2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 30.09.2009 on http://yacy.net
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//
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// This is a part of YaCy, a peer-to-peer based web search engine
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//
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// $LastChangedDate: 2009-09-23 23:26:14 +0200 (Mi, 23 Sep 2009) $
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// $LastChangedRevision: 6340 $
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// $LastChangedBy: low012 $
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//
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// LICENSE
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package net.yacy.document.importer;
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import java.io.ByteArrayInputStream;
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import java.io.File;
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import java.io.IOException;
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import net.yacy.kelondro.data.meta.DigestURI;
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import net.yacy.kelondro.util.FileUtils;
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import net.yacy.repository.LoaderDispatcher;
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import de.anomic.crawler.CrawlProfile;
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import de.anomic.crawler.retrieval.Response;
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// get one server with
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// http://roar.eprints.org/index.php?action=csv
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// list records from oai-pmh like
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// http://opus.bsz-bw.de/fhhv/oai2/oai2.php?verb=ListRecords&metadataPrefix=oai_dc
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public class OAIPMHReader {
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private final DigestURI source;
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private final ResumptionToken resumptionToken;
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public OAIPMHReader(LoaderDispatcher loader, DigestURI source, File targetDir, String filePrefix) throws IOException {
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this.source = source;
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// load the file from the net
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Response response = loader.load(source, false, true, CrawlProfile.CACHE_STRATEGY_NOCACHE);
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byte[] b = response.getContent();
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this.resumptionToken = new ResumptionToken(new ByteArrayInputStream(b));
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File f1 = new File(targetDir, OAIPMHImporter.filename4Source(source));
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File f0 = new File(targetDir, f1.getName() + ".tmp");
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// transaction-safe writing
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FileUtils.copy(b, f0);
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f0.renameTo(f1);
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/*
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SurrogateReader sr = new SurrogateReader(new ByteArrayInputStream(b), 100);
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Thread srt = new Thread(sr);
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srt.start();
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DCEntry dce;
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while ((dce = sr.take()) != DCEntry.poison) {
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System.out.println(dce.toString());
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}
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try {
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srt.join();
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} catch (InterruptedException e) {}
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*/
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}
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public ResumptionToken getResumptionToken() {
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return this.resumptionToken;
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}
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public String source() {
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return source.toNormalform(true, false);
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}
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public static StringBuilder escape(final String s) {
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final int len = s.length();
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final StringBuilder sbuf = new StringBuilder(len + 10);
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for (int i = 0; i < len; i++) {
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final int ch = s.charAt(i);
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if ('A' <= ch && ch <= 'Z') { // 'A'..'Z'
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sbuf.append((char)ch);
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} else if ('a' <= ch && ch <= 'z') { // 'a'..'z'
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sbuf.append((char)ch);
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} else if ('0' <= ch && ch <= '9') { // '0'..'9'
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sbuf.append((char)ch);
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} else if (ch == ' ') { // space
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sbuf.append("%20");
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} else if (ch == '&' || ch == ':' // unreserved
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|| ch == '-' || ch == '_'
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|| ch == '.' || ch == '!'
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|| ch == '~' || ch == '*'
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|| ch == '\'' || ch == '('
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|| ch == ')' || ch == ';') {
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sbuf.append((char)ch);
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}
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}
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return sbuf;
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}
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public static String unescape(final String s) {
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final int l = s.length();
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final StringBuilder sbuf = new StringBuilder(l);
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int ch = -1;
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int b;
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for (int i = 0; i < l; i++) {
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/* Get next byte b from URL segment s */
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switch (ch = s.charAt(i)) {
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case '%':
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if (i + 2 < l) {
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ch = s.charAt(++i);
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int hb = (Character.isDigit ((char) ch) ? ch - '0' : 10 + Character.toLowerCase((char) ch) - 'a') & 0xF;
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ch = s.charAt(++i);
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int lb = (Character.isDigit ((char) ch) ? ch - '0' : 10 + Character.toLowerCase ((char) ch) - 'a') & 0xF;
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b = (hb << 4) | lb;
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} else {
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b = ch;
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}
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break;
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case '+':
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b = ' ';
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break;
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default:
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b = ch;
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}
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sbuf.append(b);
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}
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return sbuf.toString();
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}
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}
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/*
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http://an.oa.org/OAI-script?verb=GetRecord&identifier=oai:arXiv.org:hep-th/9901001&metadataPrefix=oai_dc
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special characters in URIs must be encoded, the correct form of the above GET request URL is:
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http://an.oa.org/OAI-script?verb=GetRecord&identifier=oai%3AarXiv.org%3Ahep-th%2F9901001&metadataPrefix=oai_dc
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"/","%2F"
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"?","%3F"
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"#","%23"
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"=","%3D"
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"&","%26"
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":","%3A"
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";","%3B"
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" ","%20"
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"%","%25"
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"+","%2B"
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GetRecord
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http://arXiv.org/oai2?verb=GetRecord&identifier=oai:arXiv.org:cs/0112017&metadataPrefix=oai_dc
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http://opus.bsz-bw.de/fhhv/oai2/oai2.php?verb=GetRecord&identifier=oai:opus.bsz-bw.de-fhhv:6&metadataPrefix=oai_dc
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Identify
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http://memory.loc.gov/cgi-bin/oai?verb=Identify
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ListIdentifiers
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http://an.oa.org/OAI-script?verb=ListIdentifiers&from=1998-01-15&metadataPrefix=oldArXiv&set=physics:hep
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http://an.oa.org/OAI-script?verb=ListIdentifiers&resumptionToken=xxx45abttyz
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http://www.perseus.tufts.edu/cgi-bin/pdataprov?verb=ListIdentifiers&metadataPrefix=olac&from=2001-01-01&until=2001-01-01&set=Perseus:collection:PersInfo
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ListMetadataFormats
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http://www.perseus.tufts.edu/cgi-bin/pdataprov?verb=ListMetadataFormats&identifier=oai:perseus.tufts.edu:Perseus:text:1999.02.0119
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http://memory.loc.gov/cgi-bin/oai?verb=ListMetadataFormats
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http://memory.loc.gov/cgi-bin/oai?verb=ListMetadataFormats&identifier=oai:lcoa1.loc.gov:loc.rbc/rbpe.00000111
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http://opus.bsz-bw.de/fhhv/oai2/oai2.php?verb=ListMetadataFormats
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ListRecords
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http://opus.bsz-bw.de/fhhv/oai2/oai2.php?verb=ListRecords&metadataPrefix=oai_dc
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http://opus.bsz-bw.de/fhhv/oai2/oai2.php?verb=ListRecords&resumptionToken=455
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http://opus.bsz-bw.de/fhhv/oai2/oai2.php?verb=ListRecords&resumptionToken=890
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http://an.oa.org/OAI-script?verb=ListRecords&from=1998-01-15&set=physics:hep&metadataPrefix=oai_rfc1807
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http://www.perseus.tufts.edu/cgi-b:in/pdataprov?verb=ListRecords&from=2002-05-01T14:15:00Z&until=2002-05-01T14:20:00Z&metadataPrefix=oai_dc
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http://memory.loc.gov/cgi-bin/oai?verb=ListRecords&from=2002-06-01T02:00:00Z&until=2002-06-01T03:00:00Z&metadataPrefix=oai_marc
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ListSets
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http://an.oa.org/OAI-script?verb=ListSets
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http://purl.org/alcme/etdcat/servlet/OAIHandler?verb=ListSets
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urn identifier koennen ueber den resolver der d-nb aufgeloest werden:
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http://nbn-resolving.de/urn:nbn:de:bsz:960-opus-1860
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<?xml version="1.0" encoding="UTF-8"?>
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<OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/
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http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd">
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<responseDate>2009-10-01T22:20:04Z</responseDate>
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<request verb="ListRecords" metadataPrefix="oai_dc">http://opus.bsz-bw.de/fhhv/oai2/oai2.php</request>
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<ListRecords>
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<record>
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<header>
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<identifier>oai:opus.bsz-bw.de-fhhv:1</identifier>
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<datestamp>2008-03-04T12:17:33Z</datestamp>
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<setSpec>ddc:020</setSpec>
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<setSpec>pub-type:2</setSpec>
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<setSpec>has-source-swb:false</setSpec>
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</header>
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<metadata>
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<oai_dc:dc
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xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
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xmlns:dc="http://purl.org/dc/elements/1.1/"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
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<dc:title>Teaching Information Literacy with the Lerninformationssystem</dc:title>
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<dc:creator>Hauschke, Christian</dc:creator>
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<dc:creator>Ullmann, Nadine</dc:creator>
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<dc:subject>Informationskompetenz</dc:subject>
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<dc:subject>E-Learning</dc:subject>
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<dc:subject>Bibliothek</dc:subject>
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<dc:subject>Informationsvermittlung</dc:subject>
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<dc:subject>Wissenschaftliches Arbeiten</dc:subject>
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<dc:subject>information literacy</dc:subject>
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<dc:subject>e-learning</dc:subject>
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<dc:subject>library</dc:subject>
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<dc:subject>information dissemination</dc:subject>
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<dc:subject>Library and information sciences</dc:subject>
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<dc:description>A German university has developed a learning information system to improve information literacy among German students. An online tutorial based on this Lerninformationssystem has been developed. The structure of this learning information system is described, an online tutorial based on it is illustrated, and the different learning styles that it supports are indicated.</dc:description>
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<dc:publisher>Fachhochschule Hannover</dc:publisher>
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<dc:publisher>Sonstige Einrichtungen. Sonstige Einrichtungen</dc:publisher>
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<dc:date>2006</dc:date>
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<dc:type>Article</dc:type>
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<dc:format>application/pdf</dc:format>
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<dc:identifier>urn:nbn:de:bsz:960-opus-10</dc:identifier>
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<dc:identifier>http://opus.bsz-bw.de/fhhv/volltexte/2008/1/</dc:identifier>
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<dc:source>Australian Academic & Research Libraries, 37 (1), S. 55-60</dc:source>
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<dc:language>eng</dc:language>
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<dc:rights>http://creativecommons.org/licenses/by/2.0/de/deed.de</dc:rights>
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</oai_dc:dc>
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</metadata>
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</record>
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<resumptionToken
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expirationDate="2009-10-02T20:20:04Z"
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completeListSize="226"
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cursor="0">119</resumptionToken>
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</ListRecords>
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</OAI-PMH>
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*/ |