Example usage for javax.xml.stream XMLStreamReader nextTag

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

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Introduction

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

Prototype

public int nextTag() throws XMLStreamException;

Source Link

Document

Skips any white space (isWhiteSpace() returns true), COMMENT, or PROCESSING_INSTRUCTION, until a START_ELEMENT or END_ELEMENT is reached.

Usage

From source file:org.eclipse.smila.datamodel.record.stax.RecordReader.java

/**
 * read MObject from the XML stream. The stream must be currently at the first attribute or annotation tag of the
 * MObject./* w ww .  j  ava 2  s.  co m*/
 * 
 * @param staxReader
 *          source XML stream
 * @return Record read from stream or null, if stream is not currently at a Record start tag.
 * @throws XMLStreamException
 *           StAX error.
 */
private MObject readMetadata(final XMLStreamReader staxReader) throws XMLStreamException {
    final MObject mobject = _recordFactory.createMetadataObject();
    while (isStartTag(staxReader, RecordParser.TAG_ATTRIBUTE)) {
        readAttribute(staxReader, mobject);
        staxReader.nextTag();
    }
    readAnnotations(staxReader, mobject);
    return mobject;
}

From source file:org.eclipse.smila.datamodel.record.stax.RecordReader.java

/**
 * read an attribute from the XML stream and set it on the given {@link MObject}.
 * //w  ww . ja  v  a2  s.c o m
 * @param staxReader
 *          XML stream
 * @param mobject
 *          metadata object
 * @throws XMLStreamException
 *           StAX error.
 */
private void readAttribute(final XMLStreamReader staxReader, final MObject mobject) throws XMLStreamException {
    final Attribute attribute = _recordFactory.createAttribute();
    final String attributeName = staxReader.getAttributeValue(null, RecordParser.ATTRIBUTE_NAME);
    attribute.setName(attributeName);
    mobject.setAttribute(attributeName, attribute);
    staxReader.nextTag();
    readAnnotations(staxReader, attribute);
    while (isStartTag(staxReader, RecordParser.TAG_LITERAL)) {
        readLiteralElement(staxReader, attribute);
        staxReader.nextTag();
    }
    while (isStartTag(staxReader, RecordParser.TAG_OBJECT)) {
        staxReader.nextTag();
        attribute.addObject(readMetadata(staxReader));
        staxReader.nextTag();
    }
}

From source file:org.eclipse.smila.datamodel.record.stax.RecordReader.java

/**
 * read an L element and add {@link Literal}s to the given {@link Attribute}.
 * /*  www . j a  va2 s.  c o m*/
 * @param staxReader
 *          XML stream
 * @param attribute
 *          current attribute
 * @throws XMLStreamException
 *           StAX error
 */
private void readLiteralElement(final XMLStreamReader staxReader, final Attribute attribute)
        throws XMLStreamException {
    final String defaultSemanticType = staxReader.getAttributeValue(null, RecordParser.ATTRIBUTE_SEMANTICTYPE);
    staxReader.nextTag();
    Literal literal = null;
    while (isStartTag(staxReader, RecordParser.TAG_VALUE)) {
        literal = _recordFactory.createLiteral();
        String semanticType = staxReader.getAttributeValue(null, RecordParser.ATTRIBUTE_SEMANTICTYPE);
        if (semanticType == null) {
            semanticType = defaultSemanticType;
        }
        literal.setSemanticType(semanticType);
        final String dataType = staxReader.getAttributeValue(null, RecordParser.ATTRIBUTE_TYPE);
        final String stringValue = staxReader.getElementText();
        setLiteralValue(literal, dataType, stringValue);
        attribute.addLiteral(literal);
        staxReader.nextTag();
    }
    if (isStartTag(staxReader, RecordParser.TAG_ANNOTATION)) {
        if (literal == null) { // literal without value, this is actually allowed by the schema.
            literal = _recordFactory.createLiteral();
        }
        readAnnotations(staxReader, attribute);
    }
}

From source file:org.eclipse.smila.datamodel.record.stax.RecordReader.java

/**
 * read an annotations from the stream and add them to the given {@link Annotatable}.
 * //  w  ww . j a  v  a  2 s  .  c o  m
 * @param staxReader
 *          XML stream
 * @param annotatable
 *          object to annotate
 * @throws XMLStreamException
 *           StAX error
 */
private void readAnnotations(final XMLStreamReader staxReader, final Annotatable annotatable)
        throws XMLStreamException {
    while (isStartTag(staxReader, RecordParser.TAG_ANNOTATION)) {
        readAnnotation(staxReader, annotatable);
        staxReader.nextTag();
    }
}

From source file:org.eclipse.smila.datamodel.record.stax.RecordReader.java

/**
 * read an annotation from the stream and add it to the given {@link Annotatable}.
 * //  w w w .j av a 2s  .co  m
 * @param staxReader
 *          XML stream
 * @param annotatable
 *          object to annotate
 * @throws XMLStreamException
 *           StAX error
 */
private void readAnnotation(final XMLStreamReader staxReader, final Annotatable annotatable)
        throws XMLStreamException {
    final Annotation annotation = _recordFactory.createAnnotation();
    final String annotationName = staxReader.getAttributeValue(null, RecordParser.ATTRIBUTE_NAME);
    staxReader.nextTag();
    while (isStartTag(staxReader, RecordParser.TAG_VALUE)) {
        final String valueName = staxReader.getAttributeValue(null, RecordParser.ATTRIBUTE_NAME);
        final String value = staxReader.getElementText();
        if (valueName == null) {
            annotation.addAnonValue(value);
        } else {
            annotation.setNamedValue(valueName, value);
        }
        staxReader.nextTag();
    }
    while (isStartTag(staxReader, RecordParser.TAG_ANNOTATION)) {
        readAnnotation(staxReader, annotation);
        staxReader.nextTag();
    }
    annotatable.addAnnotation(annotationName, annotation);
}

From source file:org.eclipse.smila.datamodel.record.stax.RecordReader.java

/**
 * read attachment names from the XML stream.
 * /*  www .j a  v a 2 s.c o m*/
 * @param staxReader
 *          source XML stream param record Record to add the attachments to.
 * @param record
 *          record to add attachments too.
 * @throws XMLStreamException
 *           StAX error.
 */
private void readAttachments(final XMLStreamReader staxReader, final Record record) throws XMLStreamException {
    while (isStartTag(staxReader, RecordParser.TAG_ATTACHMENT)) {
        final String attachmentName = staxReader.getElementText();
        if (attachmentName != null && attachmentName.length() > 0) {
            record.setAttachment(attachmentName, null);
        }
        staxReader.nextTag();
    }
}

From source file:org.eclipse.smila.datamodel.tools.DatamodelSerializationUtils.java

/**
 * De-serialize a serialized record (byte[]) to a record. If the serialized Record contained Attachments, the
 * deserialized record also contains these attachments as byte[].
 * //from   w w  w  .  j  a v  a 2  s  .c  o m
 * @param byteArray
 *          the byte array
 * 
 * @return the record
 * 
 * @throws DatamodelDeserializationException
 *           the datamodel deserialization exception
 */
public static Record deserialize(final byte[] byteArray) throws DatamodelDeserializationException {
    final ByteArrayInputStream bis = new ByteArrayInputStream(byteArray);
    ObjectInputStream wrapperInputStream = null;
    ByteArrayInputStream recordInputStream = new ByteArrayInputStream(byteArray);
    try {
        // deserialize record wrapper
        RecordByteWrapper wrapper = null;
        try {
            wrapperInputStream = new ObjectInputStream(bis);
            wrapper = (RecordByteWrapper) wrapperInputStream.readObject();
            recordInputStream = wrapper.getRecordAsStream();
        } catch (final Exception e) {
            throw new DatamodelDeserializationException(e);
        }

        // parse record from stream
        final XMLStreamReader reader = getStaxReaderFactory().createXMLStreamReader(recordInputStream);
        reader.nextTag(); // to Id tag.
        final Record record = getRecordReader().readRecord(reader);

        // append attachments to record
        if (wrapper.getAttachments() != null && !wrapper.getAttachments().isEmpty()) {
            for (final String attachmentName : wrapper.getAttachments().keySet()) {
                record.setAttachment(attachmentName, wrapper.getAttachments().get(attachmentName));
            } // for
        } // if
        return record;
    } catch (final XMLStreamException e) {
        throw new DatamodelDeserializationException(e);
    } finally {
        IOUtils.closeQuietly(bis);
        IOUtils.closeQuietly(wrapperInputStream);
        IOUtils.closeQuietly(recordInputStream);
    }
}

From source file:org.eclipse.smila.datamodel.tools.DatamodelSerializationUtils.java

/**
 * De-serialize a serialized Id (byte[]) to a record.
 * /*from  w ww  . j  a va 2  s .co m*/
 * @param byteArray
 *          the byte array
 * 
 * @return the Id
 * 
 * @throws DatamodelDeserializationException
 *           the datamodel deserialization exception
 */
public static Id deserializeId(final byte[] byteArray) throws DatamodelDeserializationException {
    final ByteArrayInputStream bis = new ByteArrayInputStream(byteArray);
    final ByteArrayInputStream idInputStream = new ByteArrayInputStream(byteArray);
    try {
        // parse record from stream
        final XMLStreamReader reader = getStaxReaderFactory().createXMLStreamReader(idInputStream);
        reader.nextTag(); // to Id tag.
        final Id id = getIdReader().readId(reader);
        return id;
    } catch (final XMLStreamException e) {
        throw new DatamodelDeserializationException(e);
    } finally {
        IOUtils.closeQuietly(bis);
        IOUtils.closeQuietly(idInputStream);
    }
}

From source file:org.eclipse.smila.datamodel.xml.XmlSerializationUtils.java

/**
 * De-serialize a serialized record (byte[]) to a record. If the serialized Record contained Attachments, the
 * deserialized record also contains these attachments as byte[].
 * /*from w w  w .  j  a v a  2  s . com*/
 * @param byteArray
 *          the byte array
 * 
 * @return the record
 * 
 * @throws DeserializationException
 *           the datamodel deserialization exception
 */
public static Record deserialize(final byte[] byteArray) throws DeserializationException {
    final ByteArrayInputStream bis = new ByteArrayInputStream(byteArray);
    ObjectInputStream wrapperInputStream = null;
    ByteArrayInputStream recordInputStream = new ByteArrayInputStream(byteArray);
    try {
        // deserialize record wrapper
        RecordByteWrapper wrapper = null;
        try {
            wrapperInputStream = new ObjectInputStream(bis);
            wrapper = (RecordByteWrapper) wrapperInputStream.readObject();
            recordInputStream = wrapper.getRecordAsStream();
        } catch (final Exception e) {
            throw new DeserializationException(e);
        }

        // parse record from stream
        final XMLStreamReader reader = getStaxReaderFactory().createXMLStreamReader(recordInputStream);
        reader.nextTag(); // to Id tag.
        final Record record = getRecordReader().readRecord(reader);

        // append attachments to record
        if (wrapper.getAttachments() != null && !wrapper.getAttachments().isEmpty()) {
            for (final String attachmentName : wrapper.getAttachments().keySet()) {
                record.setAttachment(attachmentName, wrapper.getAttachments().get(attachmentName));
            } // for
        } // if
        return record;
    } catch (final XMLStreamException e) {
        throw new DeserializationException(e);
    } finally {
        IOUtils.closeQuietly(bis);
        IOUtils.closeQuietly(wrapperInputStream);
        IOUtils.closeQuietly(recordInputStream);
    }
}

From source file:org.flockdata.integration.FileProcessor.java

private int processXMLFile(String file, ExtractProfile extractProfile) throws IOException, FlockException,
        IllegalAccessException, InstantiationException, ClassNotFoundException {
    try {/*ww  w . ja  v a 2  s  .  com*/
        int rows = 0;
        StopWatch watch = new StopWatch();
        StreamSource source = new StreamSource(file);
        XMLInputFactory xif = XMLInputFactory.newFactory();
        XMLStreamReader xsr = xif.createXMLStreamReader(source);

        XmlMappable mappable = (XmlMappable) Class.forName(extractProfile.getHandler()).newInstance();
        mappable.positionReader(xsr);

        String dataType = mappable.getDataType();
        watch.start();
        try {
            long then = new DateTime().getMillis();
            while (xsr.getLocalName().equals(dataType)) {
                EntityInputBean entityInputBean = Transformer.toEntity(mappable, xsr,
                        extractProfile.getContentModel());
                rows++;
                xsr.nextTag();
                getPayloadWriter().writeEntity(entityInputBean);

                if (stopProcessing(rows, then)) {
                    break;
                }

            }
        } finally {
            getPayloadWriter().flush();
        }
        return endProcess(watch, rows, 0);

    } catch (XMLStreamException | JAXBException e1) {
        throw new IOException(e1);
    }
}