Fix #232: access xml attributes by name not by index

Changes the `MarcXmlHandler` to access the attributes of the
`controlfield` element by name and not by index as this makes it depending
on the attribute order.

src/main/java/org/culturegraph/mf/stream/converter/xml/MarcXmlHandler.java

@@ -28,7 +28,7 @@
 /**
  * A marc xml reader.
  * @author Markus Michael Geipel
- * 
+ *
  */
 @Description("A marc xml reader")
 @In(XmlReceiver.class)
@@ -55,7 +55,7 @@ public void startElement(final String uri, final String localName, final String
 				getReceiver().startEntity(attributes.getValue("tag") + attributes.getValue("ind1") + attributes.getValue("ind2"));
 			}else if(CONTROLFIELD.equals(localName)){
 				builder = new StringBuilder();
-				currentTag = attributes.getValue(0);
+				currentTag = attributes.getValue("tag");
 			}else if(RECORD.equals(localName) && NAMESPACE.equals(uri)){
 				getReceiver().startRecord("");
 				getReceiver().literal(TYPE, attributes.getValue(TYPE));
@@ -69,18 +69,18 @@ public void startElement(final String uri, final String localName, final String
 	public void endElement(final String uri, final String localName, final String qName) throws SAXException {
 		if(SUBFIELD.equals(localName)){
 			getReceiver().literal(currentTag, builder.toString().trim());
-			
+
 		}else if(DATAFIELD.equals(localName)){
 			getReceiver().endEntity();
 		}else if(CONTROLFIELD.equals(localName)){
 			getReceiver().literal(currentTag, builder.toString().trim());
-			
+
 		}else if(RECORD.equals(localName)  && NAMESPACE.equals(uri)){
 			getReceiver().endRecord();
-			
+
 		}else if(LEADER.equals(localName)){
 			getReceiver().literal(currentTag, builder.toString().trim());
-			
+
 		}
 	}
 

src/test/java/org/culturegraph/mf/stream/converter/xml/MarcXmlHandlerTest.java

@@ -0,0 +1,71 @@
+/*
+ *  Copyright 2014 Deutsche Nationalbibliothek
+ *
+ *  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.culturegraph.mf.stream.converter.xml;
+
+import static org.mockito.Mockito.verify;
+
+import org.culturegraph.mf.framework.StreamReceiver;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.xml.sax.SAXException;
+import org.xml.sax.helpers.AttributesImpl;
+
+/**
+ * @author Christoph Böhme
+ *
+ */
+public final class MarcXmlHandlerTest {
+
+	private static final String CONTROLFIELD = "controlfield";
+	private static final String NAMESPACE = "http://www.loc.gov/MARC21/slim";
+
+	private MarcXmlHandler marcXmlHandler;
+
+	@Mock
+	private StreamReceiver receiver;
+
+	@Before
+	public void setup() {
+		MockitoAnnotations.initMocks(this);
+		marcXmlHandler = new MarcXmlHandler();
+		marcXmlHandler.setReceiver(receiver);
+	}
+
+	@After
+	public void cleanup() {
+		marcXmlHandler.closeStream();
+	}
+
+	@Test
+	public void shouldFindTagAttributeAtSecondPositionInControlFieldElement()
+			throws SAXException {
+		final AttributesImpl attributes = new AttributesImpl();
+		attributes.addAttribute(NAMESPACE, "id", "id", "CDATA", "id-1");
+		attributes.addAttribute(NAMESPACE, "tag", "tag", "CDATA", "001");
+
+		final String fieldValue = "1234";
+
+		marcXmlHandler.startElement(NAMESPACE, CONTROLFIELD, "", attributes);
+		marcXmlHandler.characters(fieldValue.toCharArray(), 0, fieldValue.length());
+		marcXmlHandler.endElement(NAMESPACE, CONTROLFIELD, "");
+
+		verify(receiver).literal("001", fieldValue);
+	}
+
+}