Example usage for javax.xml.stream XMLEventReader nextTag

List of usage examples for javax.xml.stream XMLEventReader nextTag

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Introduction

In this page you can find the example usage for javax.xml.stream XMLEventReader nextTag.

Prototype

public XMLEvent nextTag() throws XMLStreamException;

Source Link

Document

Skips any insignificant space events until a START_ELEMENT or END_ELEMENT is reached.

Usage

From source file:Main.java

/** 
 * Calls xml.nextTag() and unchecks the exception.
 * //w w w .  ja  va 2  s  . co  m
 * @param xml
 * @return xml.nextTag(), or throws a RuntimeException.
 */
public static XMLEvent nextTag(XMLEventReader xml) {
    try {
        return xml.nextTag();
    } catch (XMLStreamException e) {
        throw new RuntimeException(e);
    }
}

From source file:Main.java

/**
 * Reads the next tag and throws an exception if the next tag out of the 
 * reader is not an end tag corresponding to the given start tag. 
 * /*from   ww w.  j a va2s .  co  m*/
 * @param start
 * @param xml
 */
public static void assertClosedTag(StartElement start, XMLEventReader xml) {
    try {
        assertEnd(localNameOf(start), xml.nextTag());
    } catch (XMLStreamException e) {
        throw new RuntimeException(e);
    }
}

From source file:org.dataconservancy.model.builder.WrappingEventReaderTest.java

@Test
@Ignore("FIXME: currently failing: java.lang.ClassCastException: com.sun.xml.internal.stream.events.StartElementEvent cannot be cast to javax.xml.stream.events.EndElement "
        + "at org.dataconservancy.model.builder.WrappingEventReaderTest.testNextTagWithWrappingEventReader(WrappingEventReaderTest.java:460)")
public void testNextTagWithWrappingEventReader() throws Exception {
    // The input XML is:
    // <File><doc> </doc></File>
    // But the wrapper should wrap it to:
    // <dcp xmlns="http://dataconservancy.org/schemas/dcm/1.0"><Files><File><doc> </doc></File></Files></dcp>

    final XMLEventReader reader = new WrappingEventReader(
            readerFactory.createXMLEventReader(IOUtils.toInputStream(SINGLE_ELEMENT_DOC_WHITESPACE_1)));

    commonStartDocumentNextTagTest(reader);

    // <dcp>
    //        assertEquals(START_ELEMENT, reader.nextTag().getEventType());

    // <Files>
    final XMLEvent filesStartEvent = reader.nextTag();
    assertEquals(Q_FILES, ((StartElement) filesStartEvent).getName());
    assertEquals(START_ELEMENT, filesStartEvent.getEventType());

    // <File>
    final XMLEvent fileStartEvent = reader.nextTag();
    assertEquals(Q_FILE.getLocalPart(), ((StartElement) fileStartEvent).getName().getLocalPart());
    assertEquals(START_ELEMENT, fileStartEvent.getEventType());

    commonNextTagTest(reader);//from w  w w.  j a v a  2  s. c  o m

    // </Files>
    final XMLEvent filesEndEvent = reader.nextTag();
    assertEquals(Q_FILES, ((EndElement) filesEndEvent).getName());
    assertEquals(END_ELEMENT, filesEndEvent.getEventType());

    // </dcp>
    final XMLEvent dcpEndEvent = reader.nextTag();
    assertEquals(Q_DCP, ((EndElement) dcpEndEvent).getName());
    assertEquals(END_ELEMENT, dcpEndEvent.getEventType());

    commonEndDocumentNextTagTest(reader);
}

From source file:org.dataconservancy.model.builder.WrappingEventReaderTest.java

private void commonStartDocumentNextTagTest(XMLEventReader reader) throws XMLStreamException {
    try {/*from w w  w  .  j av  a 2 s .c o m*/
        reader.nextTag();
        fail("Expected XMLStreamException");
    } catch (XMLStreamException e) {
        // expected
    }

    // bug in default impl?  I would expect a call to nextTag() to not change the
    // state in the underlying reader if an exception is thrown.
    //assertEquals(START_DOCUMENT, reader.nextEvent().getEventType());

    // but instead we have this behavior
    assertEquals(START_ELEMENT, reader.nextEvent().getEventType());
}

From source file:org.dataconservancy.model.builder.WrappingEventReaderTest.java

private void commonEndDocumentNextTagTest(XMLEventReader reader) {
    try {//from  ww  w . java2 s .co m
        reader.nextTag();
        fail("Expected XMLStreamException");
    } catch (XMLStreamException e) {
        // expected
    }
}

From source file:org.dataconservancy.model.builder.WrappingEventReaderTest.java

private void commonNextTagTest(XMLEventReader reader) throws XMLStreamException {
    // <File>
    //        assertEquals(START_ELEMENT, reader.nextTag().getEventType());
    // <doc>
    assertEquals(START_ELEMENT, reader.nextTag().getEventType());

    // </doc>
    assertEquals(END_ELEMENT, reader.nextTag().getEventType());
    // </File>
    assertEquals(END_ELEMENT, reader.nextTag().getEventType());
}

From source file:org.dataconservancy.model.builder.WrappingEventReaderTest.java

@Test
public void testDeliverableUnitWithWrappingEventReader() throws XMLStreamException {
    final XMLEventReader reader = new WrappingEventReader(
            readerFactory.createXMLEventReader(IOUtils.toInputStream(DU_XML)));

    XMLEvent e = reader.nextEvent();
    assertEquals(START_DOCUMENT, e.getEventType());

    e = reader.nextEvent();//from   w  w  w .  j  av  a2  s.  com
    assertEquals(COMMENT, e.getEventType());

    e = reader.nextEvent();
    assertEquals(START_ELEMENT, e.getEventType());
    assertEquals(Q_DCP, e.asStartElement().getName());

    e = reader.nextEvent();
    assertEquals(START_ELEMENT, e.getEventType());
    assertEquals(Q_DUS, e.asStartElement().getName());

    e = reader.nextEvent();
    assertEquals(START_ELEMENT, e.getEventType());
    assertEquals(Q_DU, e.asStartElement().getName());

    e = reader.nextEvent();
    assertEquals(CHARACTERS, e.getEventType());

    e = reader.nextEvent();
    assertEquals(START_ELEMENT, e.getEventType());
    assertEquals(new QName(NS_URI, "collection"), e.asStartElement().getName());

    // Skip to the <metadata> element
    while ((e = reader.nextTag()) != null) {
        if (e.isStartElement() && e.asStartElement().getName().getLocalPart().equals("metadata")) {
            break;
        }
    }

    e = reader.nextTag();
    assertEquals(START_ELEMENT, e.getEventType());
    assertEquals(new QName("http://www.amazon.com", "md"), e.asStartElement().getName());

    e = reader.nextTag();
    assertEquals(START_ELEMENT, e.getEventType());
    assertEquals(new QName("http://www.amazon.com", "origReleaseDate"), e.asStartElement().getName());
}

From source file:org.qi4j.valueserialization.stax.StaxValueDeserializer.java

@Override
protected Object readPlainValue(XMLEventReader input) throws Exception {
    if (!input.hasNext()) {
        return null;
    }//from  w ww  . j  a v a2 s  . co  m
    XMLEvent nextEvent = input.nextEvent();
    if (nextEvent.getEventType() == XMLEvent.START_ELEMENT
            && "null".equals(nextEvent.asStartElement().getName().getLocalPart())) {
        input.nextTag();
        return null;
    }
    if (nextEvent.getEventType() != XMLEvent.CHARACTERS) {
        throw new ValueSerializationException("Expected characters but got: " + nextEvent);
    }
    String stringValue = nextEvent.asCharacters().getData();
    return detectAndConvertStringValue(stringValue);
}

From source file:org.qi4j.valueserialization.stax.StaxValueDeserializer.java

@Override
protected <T> Collection<T> readArrayInCollection(XMLEventReader input,
        Function<XMLEventReader, T> deserializer, Collection<T> collection) throws Exception {
    if (!input.hasNext()) {
        return null;
    }/*from w w  w .j av a2s .com*/
    XMLEvent nextTag = input.nextTag();
    if (nextTag.isStartElement() && "null".equals(nextTag.asStartElement().getName().getLocalPart())) {
        input.nextTag();
        return null;
    }
    if (!nextTag.isStartElement() || !"array".equals(nextTag.asStartElement().getName().getLocalPart())) {
        throw new ValueSerializationException("Expected an <array/> but got: " + nextTag);
    }
    WHILE: while (input.hasNext()) {
        XMLEvent currentTag = input.nextTag();
        if (currentTag.isEndElement()) {
            String endElementName = currentTag.asEndElement().getName().getLocalPart();
            switch (endElementName) {
            case "array":
                break WHILE;
            case "value":
                continue;
            }
        }
        if (!"value".equals(currentTag.asStartElement().getName().getLocalPart())) {
            throw new ValueSerializationException("Expected a <value/> but got: " + currentTag);
        }
        T item = deserializer.map(input);
        collection.add(item);
    }
    return collection;
}

From source file:org.qi4j.valueserialization.stax.StaxValueDeserializer.java

@Override
protected <K, V> Map<K, V> readMapInMap(XMLEventReader input, Function<XMLEventReader, K> keyDeserializer,
        Function<XMLEventReader, V> valueDeserializer, Map<K, V> map) throws Exception {
    if (!input.hasNext()) {
        return null;
    }/*w  ww . jav  a2s .c o  m*/
    XMLEvent nextTag = input.nextTag();
    if (nextTag.isStartElement() && "null".equals(nextTag.asStartElement().getName().getLocalPart())) {
        input.nextTag();
        return null;
    }
    if (!nextTag.isStartElement() || !"array".equals(nextTag.asStartElement().getName().getLocalPart())) {
        throw new ValueSerializationException("Expected an <array/> but got: " + nextTag);
    }
    XMLEvent currentTag = input.nextTag(); // <object>
    while (!currentTag.isEndElement() || !"array".equals(currentTag.asEndElement().getName().getLocalPart())) {
        if (!currentTag.isStartElement()
                || !"object".equals(currentTag.asStartElement().getName().getLocalPart())) {
            throw new ValueSerializationException("Expected an <object/> but got: " + nextTag);
        }
        currentTag = input.nextTag(); // <field>
        K key = null;
        V value = null;
        while (!currentTag.isEndElement()
                || !"object".equals(currentTag.asEndElement().getName().getLocalPart())) {
            input.nextTag(); // <name>
            String keyOrValue = input.nextEvent().asCharacters().getData();
            input.nextTag(); // </name>
            input.nextTag(); // <value>
            switch (keyOrValue) {
            case "key":
                key = keyDeserializer.map(input);
                break;
            case "value":
                value = valueDeserializer.map(input);
                break;
            default:
                readObjectTree(input);
                break;
            }
            input.nextTag(); // </value>
            input.nextTag(); // </field>
            currentTag = input.nextTag();
        }
        if (key != null) {
            map.put(key, value);
        }
        currentTag = input.nextTag();
    }
    return map;
}