/
AlephMabXmlHandler.java
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/
AlephMabXmlHandler.java
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/** Copyright 2013,2014 hbz
*
* Licensed under the Apache License, Version 2.0 the "License";
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.metafacture.biblio;
import org.metafacture.framework.FluxCommand;
import org.metafacture.framework.StreamReceiver;
import org.metafacture.framework.XmlReceiver;
import org.metafacture.framework.annotations.Description;
import org.metafacture.framework.annotations.In;
import org.metafacture.framework.annotations.Out;
import org.metafacture.framework.helpers.DefaultXmlPipe;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* An Aleph-MAB-XML reader.
*
* @author Pascal Christoph (dr0i)
*
*/
@Description("A MAB XML reader")
@In(XmlReceiver.class)
@Out(StreamReceiver.class)
@FluxCommand("handle-mabxml")
public final class AlephMabXmlHandler extends DefaultXmlPipe<StreamReceiver> {
private static final String SUBFIELD = "subfield";
private static final String DATAFIELD = "datafield";
private static final String CONTROLLFIELD = "controlfield";
private static final String RECORD = "ListRecords";
private static final String LEADER = "leader";
private static final String DATAFIELD_ATTRIBUTE = "tag";
private static final String SUBFIELD_ATTRIBUTE = "code";
private static final String INDICATOR1 = "ind1";
private static final String INDICATOR2 = "ind2";
private String currentTag = "";
private StringBuilder builder = new StringBuilder();
/**
* Creates instance of {@link AlephMabXmlHandler}.
*/
public AlephMabXmlHandler() {
}
@Override
public void characters(final char[] chars, final int start, final int length)
throws SAXException {
this.builder.append(chars, start, length);
}
@Override
public void endElement(final String uri, final String localName, final String qName)
throws SAXException {
if (AlephMabXmlHandler.CONTROLLFIELD.equals(localName)) {
getReceiver().literal(this.currentTag, this.builder.toString().trim());
getReceiver().endEntity();
}
else if (AlephMabXmlHandler.SUBFIELD.equals(localName)) {
getReceiver().literal(this.currentTag, this.builder.toString().trim());
}
else if (AlephMabXmlHandler.DATAFIELD.equals(localName)) {
getReceiver().endEntity();
}
else if (AlephMabXmlHandler.RECORD.equals(localName)) {
getReceiver().endRecord();
}
}
@Override
public void startElement(final String uri, final String localName, final String qName,
final Attributes attributes) throws SAXException {
if (AlephMabXmlHandler.CONTROLLFIELD.equals(localName)) {
this.builder = new StringBuilder();
this.currentTag = "";
getReceiver().startEntity(attributes.getValue(AlephMabXmlHandler.DATAFIELD_ATTRIBUTE));
}
else if (AlephMabXmlHandler.SUBFIELD.equals(localName)) {
this.builder = new StringBuilder();
this.currentTag = attributes.getValue(AlephMabXmlHandler.SUBFIELD_ATTRIBUTE);
}
else if (AlephMabXmlHandler.DATAFIELD.equals(localName)) {
getReceiver().startEntity(attributes.getValue(AlephMabXmlHandler.DATAFIELD_ATTRIBUTE) +
attributes.getValue(AlephMabXmlHandler.INDICATOR1) +
attributes.getValue(AlephMabXmlHandler.INDICATOR2));
}
else if (AlephMabXmlHandler.RECORD.equals(localName)) {
getReceiver().startRecord("");
}
else if (AlephMabXmlHandler.LEADER.equals(localName)) {
this.builder = new StringBuilder();
this.currentTag = AlephMabXmlHandler.LEADER;
}
}
}