Example usage for javax.xml.stream XMLEventReader nextEvent

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

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Introduction

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

Prototype

public XMLEvent nextEvent() throws XMLStreamException;

Source Link

Document

Gets the next XMLEvent.

Usage

From source file:org.apache.olingo.client.core.serialization.AtomDeserializer.java

private Entity entity(final XMLEventReader reader, final StartElement start)
        throws XMLStreamException, EdmPrimitiveTypeException {
    final Entity entity;
    if (entryRefQName.equals(start.getName())) {
        entity = entityRef(start);//from   w ww.ja  v  a2 s.  c  o  m
    } else if (Constants.QNAME_ATOM_ELEM_ENTRY.equals(start.getName())) {
        entity = new Entity();
        final Attribute xmlBase = start.getAttributeByName(Constants.QNAME_ATTR_XML_BASE);
        if (xmlBase != null) {
            entity.setBaseURI(URI.create(xmlBase.getValue()));
        }

        final Attribute etag = start.getAttributeByName(etagQName);
        if (etag != null) {
            entity.setETag(etag.getValue());
        }

        boolean foundEndEntry = false;
        while (reader.hasNext() && !foundEndEntry) {
            final XMLEvent event = reader.nextEvent();

            if (event.isStartElement()) {
                if (Constants.QNAME_ATOM_ELEM_ID.equals(event.asStartElement().getName())) {
                    common(reader, event.asStartElement(), entity, "id");
                } else if (Constants.QNAME_ATOM_ELEM_TITLE.equals(event.asStartElement().getName())) {
                    common(reader, event.asStartElement(), entity, "title");
                } else if (Constants.QNAME_ATOM_ELEM_SUMMARY.equals(event.asStartElement().getName())) {
                    common(reader, event.asStartElement(), entity, "summary");
                } else if (Constants.QNAME_ATOM_ELEM_UPDATED.equals(event.asStartElement().getName())) {
                    common(reader, event.asStartElement(), entity, "updated");
                } else if (Constants.QNAME_ATOM_ELEM_CATEGORY.equals(event.asStartElement().getName())) {
                    final Attribute term = event.asStartElement()
                            .getAttributeByName(QName.valueOf(Constants.ATOM_ATTR_TERM));
                    if (term != null) {
                        entity.setType(new EdmTypeInfo.Builder().setTypeExpression(term.getValue()).build()
                                .internal());
                    }
                } else if (Constants.QNAME_ATOM_ELEM_LINK.equals(event.asStartElement().getName())) {
                    final Link link = new Link();
                    final Attribute rel = event.asStartElement()
                            .getAttributeByName(QName.valueOf(Constants.ATTR_REL));
                    if (rel != null) {
                        link.setRel(rel.getValue());
                    }
                    final Attribute title = event.asStartElement()
                            .getAttributeByName(QName.valueOf(Constants.ATTR_TITLE));
                    if (title != null) {
                        link.setTitle(title.getValue());
                    }
                    final Attribute href = event.asStartElement()
                            .getAttributeByName(QName.valueOf(Constants.ATTR_HREF));
                    if (href != null) {
                        link.setHref(href.getValue());
                    }
                    final Attribute type = event.asStartElement()
                            .getAttributeByName(QName.valueOf(Constants.ATTR_TYPE));
                    if (type != null) {
                        link.setType(type.getValue());
                    }

                    if (Constants.SELF_LINK_REL.equals(link.getRel())) {
                        entity.setSelfLink(link);
                    } else if (Constants.EDIT_LINK_REL.equals(link.getRel())) {
                        entity.setEditLink(link);
                    } else if (Constants.EDITMEDIA_LINK_REL.equals(link.getRel())) {
                        final Attribute mediaETag = event.asStartElement().getAttributeByName(etagQName);
                        if (mediaETag != null) {
                            entity.setMediaETag(mediaETag.getValue());
                        }
                    } else if (link.getRel().startsWith(Constants.NS_NAVIGATION_LINK_REL)) {
                        entity.getNavigationLinks().add(link);
                        inline(reader, event.asStartElement(), link);
                    } else if (link.getRel().startsWith(Constants.NS_ASSOCIATION_LINK_REL)) {
                        entity.getAssociationLinks().add(link);
                    } else if (link.getRel().startsWith(Constants.NS_MEDIA_EDIT_LINK_REL)
                            || link.getRel().startsWith(Constants.NS_MEDIA_READ_LINK_REL)) {
                        final Attribute metag = event.asStartElement().getAttributeByName(etagQName);
                        if (metag != null) {
                            link.setMediaETag(metag.getValue());
                        }
                        entity.getMediaEditLinks().add(link);
                    }
                } else if (actionQName.equals(event.asStartElement().getName())) {
                    final Operation operation = new Operation();
                    final Attribute metadata = event.asStartElement()
                            .getAttributeByName(QName.valueOf(Constants.ATTR_METADATA));
                    if (metadata != null) {
                        operation.setMetadataAnchor(metadata.getValue());
                    }
                    final Attribute title = event.asStartElement()
                            .getAttributeByName(QName.valueOf(Constants.ATTR_TITLE));
                    if (title != null) {
                        operation.setTitle(title.getValue());
                    }
                    final Attribute target = event.asStartElement()
                            .getAttributeByName(QName.valueOf(Constants.ATTR_TARGET));
                    if (target != null) {
                        operation.setTarget(URI.create(target.getValue()));
                    }

                    entity.getOperations().add(operation);
                } else if (Constants.QNAME_ATOM_ELEM_CONTENT.equals(event.asStartElement().getName())) {
                    final Attribute type = event.asStartElement()
                            .getAttributeByName(QName.valueOf(Constants.ATTR_TYPE));
                    if (type == null
                            || ContentType.APPLICATION_XML.toContentTypeString().equals(type.getValue())) {
                        properties(reader, skipBeforeFirstStartElement(reader), entity);
                    } else {
                        entity.setMediaContentType(type.getValue());
                        final Attribute src = event.asStartElement()
                                .getAttributeByName(QName.valueOf(Constants.ATOM_ATTR_SRC));
                        if (src != null) {
                            entity.setMediaContentSource(URI.create(src.getValue()));
                        }
                    }
                } else if (propertiesQName.equals(event.asStartElement().getName())) {
                    properties(reader, event.asStartElement(), entity);
                } else if (annotationQName.equals(event.asStartElement().getName())) {
                    entity.getAnnotations().add(annotation(reader, event.asStartElement()));
                }
            }

            if (event.isEndElement() && start.getName().equals(event.asEndElement().getName())) {
                foundEndEntry = true;
            }
        }
    } else {
        entity = null;
    }

    return entity;
}

From source file:org.apache.olingo.client.core.serialization.AtomDeserializer.java

private void count(final XMLEventReader reader, final StartElement start, final EntityCollection entitySet)
        throws XMLStreamException {

    boolean foundEndElement = false;
    while (reader.hasNext() && !foundEndElement) {
        final XMLEvent event = reader.nextEvent();

        if (event.isCharacters() && !event.asCharacters().isWhiteSpace()) {
            entitySet.setCount(Integer.valueOf(event.asCharacters().getData()));
        }//from ww w. j a v a 2 s. co  m

        if (event.isEndElement() && start.getName().equals(event.asEndElement().getName())) {
            foundEndElement = true;
        }
    }
}

From source file:org.apache.olingo.client.core.serialization.AtomDeserializer.java

private EntityCollection entitySet(final XMLEventReader reader, final StartElement start)
        throws XMLStreamException, EdmPrimitiveTypeException {
    if (!Constants.QNAME_ATOM_ELEM_FEED.equals(start.getName())) {
        return null;
    }/* ww w  .  j  a va2 s.  c o m*/
    final EntityCollection entitySet = new EntityCollection();
    final Attribute xmlBase = start.getAttributeByName(Constants.QNAME_ATTR_XML_BASE);
    if (xmlBase != null) {
        entitySet.setBaseURI(URI.create(xmlBase.getValue()));
    }

    boolean foundEndFeed = false;
    while (reader.hasNext() && !foundEndFeed) {
        final XMLEvent event = reader.nextEvent();
        if (event.isStartElement()) {
            if (countQName.equals(event.asStartElement().getName())) {
                count(reader, event.asStartElement(), entitySet);
            } else if (Constants.QNAME_ATOM_ELEM_ID.equals(event.asStartElement().getName())) {
                common(reader, event.asStartElement(), entitySet, "id");
            } else if (Constants.QNAME_ATOM_ELEM_TITLE.equals(event.asStartElement().getName())) {
                common(reader, event.asStartElement(), entitySet, "title");
            } else if (Constants.QNAME_ATOM_ELEM_SUMMARY.equals(event.asStartElement().getName())) {
                common(reader, event.asStartElement(), entitySet, "summary");
            } else if (Constants.QNAME_ATOM_ELEM_UPDATED.equals(event.asStartElement().getName())) {
                common(reader, event.asStartElement(), entitySet, "updated");
            } else if (Constants.QNAME_ATOM_ELEM_LINK.equals(event.asStartElement().getName())) {
                final Attribute rel = event.asStartElement()
                        .getAttributeByName(QName.valueOf(Constants.ATTR_REL));
                if (rel != null) {
                    if (Constants.NEXT_LINK_REL.equals(rel.getValue())) {
                        final Attribute href = event.asStartElement()
                                .getAttributeByName(QName.valueOf(Constants.ATTR_HREF));
                        if (href != null) {
                            entitySet.setNext(URI.create(href.getValue()));
                        }
                    }
                    if (Constants.NS_DELTA_LINK_REL.equals(rel.getValue())) {
                        final Attribute href = event.asStartElement()
                                .getAttributeByName(QName.valueOf(Constants.ATTR_HREF));
                        if (href != null) {
                            entitySet.setDeltaLink(URI.create(href.getValue()));
                        }
                    }
                }
            } else if (Constants.QNAME_ATOM_ELEM_ENTRY.equals(event.asStartElement().getName())) {
                entitySet.getEntities().add(entity(reader, event.asStartElement()));
            } else if (entryRefQName.equals(event.asStartElement().getName())) {
                entitySet.getEntities().add(entityRef(event.asStartElement()));
            } else if (annotationQName.equals(event.asStartElement().getName())) {
                entitySet.getAnnotations().add(annotation(reader, event.asStartElement()));
            }
        }

        if (event.isEndElement() && start.getName().equals(event.asEndElement().getName())) {
            foundEndFeed = true;
        }
    }

    return entitySet;
}

From source file:org.apache.olingo.client.core.serialization.AtomDeserializer.java

private ODataError error(final XMLEventReader reader, final StartElement start) throws XMLStreamException {
    final ODataError error = new ODataError();

    boolean setCode = false;
    boolean codeSet = false;
    boolean setMessage = false;
    boolean messageSet = false;
    boolean setTarget = false;
    boolean targetSet = false;

    boolean foundEndElement = false;
    while (reader.hasNext() && !foundEndElement) {
        final XMLEvent event = reader.nextEvent();

        if (event.isStartElement()) {
            if (errorCodeQName.equals(event.asStartElement().getName())) {
                setCode = true;//from w w w . j a  va 2  s  .  co  m
            } else if (errorMessageQName.equals(event.asStartElement().getName())) {
                setMessage = true;
            } else if (errorTargetQName.equals(event.asStartElement().getName())) {
                setTarget = true;
            }
        }

        if (event.isCharacters() && !event.asCharacters().isWhiteSpace()) {
            if (setCode && !codeSet) {
                error.setCode(event.asCharacters().getData());
                setCode = false;
                codeSet = true;
            }
            if (setMessage && !messageSet) {
                error.setMessage(event.asCharacters().getData());
                setMessage = false;
                messageSet = true;
            }
            if (setTarget && !targetSet) {
                error.setTarget(event.asCharacters().getData());
                setTarget = false;
                targetSet = true;
            }
        }

        if (event.isEndElement() && start.getName().equals(event.asEndElement().getName())) {
            foundEndElement = true;
        }
    }

    return error;
}

From source file:org.apache.olingo.client.core.serialization.AtomGeoValueDeserializer.java

private List<Point> points(final XMLEventReader reader, final StartElement start,
        final EdmPrimitiveTypeKind type, final SRID srid) throws XMLStreamException {

    final List<Point> result = new ArrayList<Point>();

    boolean foundEndProperty = false;
    while (reader.hasNext() && !foundEndProperty) {
        final XMLEvent event = reader.nextEvent();

        if (event.isCharacters() && !event.asCharacters().isWhiteSpace()) {
            final String[] pointInfo = event.asCharacters().getData().split(" ");

            final Point point = new Point(GeoUtils.getDimension(type), srid);
            try {
                point.setX(EdmDouble.getInstance().valueOfString(pointInfo[0], null, null,
                        Constants.DEFAULT_PRECISION, Constants.DEFAULT_SCALE, null, Double.class));
                point.setY(EdmDouble.getInstance().valueOfString(pointInfo[1], null, null,
                        Constants.DEFAULT_PRECISION, Constants.DEFAULT_SCALE, null, Double.class));
            } catch (EdmPrimitiveTypeException e) {
                throw new XMLStreamException("While deserializing point coordinates as double", e);
            }/*  w w w  .j  a v a  2s. co m*/
            result.add(point);
        }

        if (event.isEndElement() && start.getName().equals(event.asEndElement().getName())) {
            foundEndProperty = true;
        }
    }

    // handles bad input, e.g. things like <gml:pos/>
    if (result.isEmpty()) {
        result.add(new Point(GeoUtils.getDimension(type), srid));
    }

    return result;
}

From source file:org.apache.olingo.client.core.serialization.AtomGeoValueDeserializer.java

private MultiPoint multipoint(final XMLEventReader reader, final StartElement start,
        final EdmPrimitiveTypeKind type, final SRID srid) throws XMLStreamException {

    List<Point> points = Collections.<Point>emptyList();

    boolean foundEndProperty = false;
    while (reader.hasNext() && !foundEndProperty) {
        final XMLEvent event = reader.nextEvent();

        if (event.isStartElement() && event.asStartElement().getName().equals(Constants.QNAME_POINTMEMBERS)) {
            points = points(reader, event.asStartElement(), type, null);
        }/*from   w ww .j a  v a2s .co m*/

        if (event.isEndElement() && start.getName().equals(event.asEndElement().getName())) {
            foundEndProperty = true;
        }
    }

    return new MultiPoint(GeoUtils.getDimension(type), srid, points);
}

From source file:org.apache.olingo.client.core.serialization.AtomGeoValueDeserializer.java

private Polygon polygon(final XMLEventReader reader, final StartElement start, final EdmPrimitiveTypeKind type,
        final SRID srid) throws XMLStreamException {

    List<Point> extPoints = null;
    List<Point> intPoints = null;

    boolean foundEndProperty = false;
    while (reader.hasNext() && !foundEndProperty) {
        final XMLEvent event = reader.nextEvent();

        if (event.isStartElement()) {
            if (event.asStartElement().getName().equals(Constants.QNAME_POLYGON_EXTERIOR)) {
                extPoints = points(reader, event.asStartElement(), type, null);
            }/*from  w w  w.  j  a va 2 s  .  c  o  m*/
            if (event.asStartElement().getName().equals(Constants.QNAME_POLYGON_INTERIOR)) {
                intPoints = points(reader, event.asStartElement(), type, null);
            }
        }

        if (event.isEndElement() && start.getName().equals(event.asEndElement().getName())) {
            foundEndProperty = true;
        }
    }

    return new Polygon(GeoUtils.getDimension(type), srid, intPoints, extPoints);
}

From source file:org.apache.olingo.client.core.serialization.AtomGeoValueDeserializer.java

private MultiLineString multiLineString(final XMLEventReader reader, final StartElement start,
        final EdmPrimitiveTypeKind type, final SRID srid) throws XMLStreamException {

    final List<LineString> lineStrings = new ArrayList<LineString>();

    boolean foundEndProperty = false;
    while (reader.hasNext() && !foundEndProperty) {
        final XMLEvent event = reader.nextEvent();

        if (event.isStartElement() && event.asStartElement().getName().equals(Constants.QNAME_LINESTRING)) {
            lineStrings.add(lineString(reader, event.asStartElement(), type, null));
        }/*from   ww w  .  ja  v a 2  s  . c om*/

        if (event.isEndElement() && start.getName().equals(event.asEndElement().getName())) {
            foundEndProperty = true;
        }
    }

    return new MultiLineString(GeoUtils.getDimension(type), srid, lineStrings);
}

From source file:org.apache.olingo.client.core.serialization.AtomGeoValueDeserializer.java

private MultiPolygon multiPolygon(final XMLEventReader reader, final StartElement start,
        final EdmPrimitiveTypeKind type, final SRID srid) throws XMLStreamException {

    final List<Polygon> polygons = new ArrayList<Polygon>();

    boolean foundEndProperty = false;
    while (reader.hasNext() && !foundEndProperty) {
        final XMLEvent event = reader.nextEvent();

        if (event.isStartElement() && event.asStartElement().getName().equals(Constants.QNAME_POLYGON)) {
            polygons.add(polygon(reader, event.asStartElement(), type, null));
        }/*from   w w w.  j a  v a2s  . co m*/

        if (event.isEndElement() && start.getName().equals(event.asEndElement().getName())) {
            foundEndProperty = true;
        }
    }

    return new MultiPolygon(GeoUtils.getDimension(type), srid, polygons);
}

From source file:org.apache.olingo.client.core.serialization.AtomGeoValueDeserializer.java

private GeospatialCollection collection(final XMLEventReader reader, final StartElement start,
        final EdmPrimitiveTypeKind type, final SRID srid) throws XMLStreamException {

    final List<Geospatial> geospatials = new ArrayList<Geospatial>();

    boolean foundEndCollection = false;
    while (reader.hasNext() && !foundEndCollection) {
        final XMLEvent event = reader.nextEvent();

        if (event.isStartElement() && event.asStartElement().getName().equals(Constants.QNAME_GEOMEMBERS)) {
            boolean foundEndMembers = false;
            while (reader.hasNext() && !foundEndMembers) {
                final XMLEvent subevent = reader.nextEvent();

                if (subevent.isStartElement()) {
                    geospatials.add(deserialize(reader, subevent.asStartElement(), GeoUtils.getType(
                            GeoUtils.getDimension(type), subevent.asStartElement().getName().getLocalPart())));
                }/*  w  w  w  .j av a 2  s  .  c o  m*/

                if (subevent.isEndElement()
                        && Constants.QNAME_GEOMEMBERS.equals(subevent.asEndElement().getName())) {
                    foundEndMembers = true;
                }
            }
        }

        if (event.isEndElement() && start.getName().equals(event.asEndElement().getName())) {
            foundEndCollection = true;
        }
    }

    return new GeospatialCollection(GeoUtils.getDimension(type), srid, geospatials);
}