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indent XML records collected from oai-pmh endpoints

This commit is contained in:
Claudio Atzori 2021-02-25 16:19:12 +01:00
parent b830e33392
commit 7df2461ccc
1 changed files with 16 additions and 4 deletions
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20
dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/collection/plugin/oai/OaiIterator.java
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@ -1,7 +1,9 @@
package eu.dnetlib.dhp.collection.plugin.oai;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.Iterator;
@ -11,8 +13,11 @@ import java.util.concurrent.PriorityBlockingQueue;
import org.apache.commons.lang.StringUtils;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Node;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -28,7 +33,6 @@ public class OaiIterator implements Iterator<String> {
private final static String REPORT_PREFIX = "oai:";
private final Queue<String> queue = new PriorityBlockingQueue<>();
private final SAXReader reader = new SAXReader();
private final String baseUrl;
private final String set;
@ -149,13 +153,13 @@ public class OaiIterator implements Iterator<String> {
final String xml = httpConnector.getInputSource(url, report);
Document doc;
try {
doc = reader.read(new StringReader(xml));
doc = DocumentHelper.parseText(xml);
} catch (final DocumentException e) {
log.warn("Error parsing xml, I try to clean it. {}", e.getMessage());
report.put(e.getClass().getName(), e.getMessage());
final String cleaned = XmlCleaner.cleanAllEntities(xml);
try {
doc = reader.read(new StringReader(cleaned));
doc = DocumentHelper.parseText(xml);
} catch (final DocumentException e1) {
final String resumptionToken = extractResumptionToken(xml);
if (resumptionToken == null) {
@ -182,7 +186,15 @@ public class OaiIterator implements Iterator<String> {
}
for (final Object o : doc.selectNodes("//*[local-name()='ListRecords']/*[local-name()='record']")) {
queue.add(((Node) o).asXML());
final StringWriter sw = new StringWriter();
final XMLWriter writer = new XMLWriter(sw, OutputFormat.createPrettyPrint());
try {
writer.write((Node) o);
queue.add(sw.toString());
} catch (IOException e) {
report.put(e.getClass().getName(), e.getMessage());
throw new CollectorException("Error parsing XML record:\n" + ((Node) o).asXML(), e);
}
}
return doc.valueOf("//*[local-name()='resumptionToken']");