Examples with NodeValue org.exist.xquery.value.NodeValue used on opensource projects

Example 21 with NodeValue

use of org.exist.xquery.value.NodeValue in project exist by eXist-db.

the class FunLocalName method eval.

@Override
public Sequence eval(Sequence contextSequence, final Item contextItem) throws XPathException {
    if (context.getProfiler().isEnabled()) {
        context.getProfiler().start(this);
        context.getProfiler().message(this, Profiler.DEPENDENCIES, "DEPENDENCIES", Dependency.getDependenciesName(this.getDependencies()));
        if (contextSequence != null) {
            context.getProfiler().message(this, Profiler.START_SEQUENCES, "CONTEXT SEQUENCE", contextSequence);
        }
        if (contextItem != null) {
            context.getProfiler().message(this, Profiler.START_SEQUENCES, "CONTEXT ITEM", contextItem.toSequence());
        }
    }
    if (contextItem != null) {
        contextSequence = contextItem.toSequence();
    }
    final Item item;
    // the context sequence
    if (getArgumentCount() > 0) {
        final Sequence seq = getArgument(0).eval(contextSequence);
        if (!seq.isEmpty()) {
            item = seq.itemAt(0);
        } else {
            item = null;
        }
    } else {
        if (contextSequence == null) {
            throw new XPathException(this, ErrorCodes.XPDY0002, "Undefined context item");
        }
        item = contextSequence.itemAt(0);
    }
    final Sequence result;
    if (item == null) {
        result = StringValue.EMPTY_STRING;
    } else {
        if (!Type.subTypeOf(item.getType(), Type.NODE)) {
            throw new XPathException(this, ErrorCodes.XPTY0004, "item is not a node; got '" + Type.getTypeName(item.getType()) + "'");
        }
        // TODO : how to improve performance ?
        final Node n = ((NodeValue) item).getNode();
        final String localName = n.getLocalName();
        if (localName != null) {
            result = new StringValue(localName);
        } else {
            result = StringValue.EMPTY_STRING;
        }
    }
    if (context.getProfiler().isEnabled()) {
        context.getProfiler().end(this, "", result);
    }
    return result;
}

Example 22 with NodeValue

use of org.exist.xquery.value.NodeValue in project exist by eXist-db.

the class FunName method eval.

@Override
public Sequence eval(Sequence contextSequence, final Item contextItem) throws XPathException {
    if (context.getProfiler().isEnabled()) {
        context.getProfiler().start(this);
        context.getProfiler().message(this, Profiler.DEPENDENCIES, "DEPENDENCIES", Dependency.getDependenciesName(this.getDependencies()));
        if (contextSequence != null) {
            context.getProfiler().message(this, Profiler.START_SEQUENCES, "CONTEXT SEQUENCE", contextSequence);
        }
        if (contextItem != null) {
            context.getProfiler().message(this, Profiler.START_SEQUENCES, "CONTEXT ITEM", contextItem.toSequence());
        }
    }
    if (contextItem != null) {
        contextSequence = contextItem.toSequence();
    }
    // If we have one argument, we take it into account
    final Sequence seq;
    if (getSignature().getArgumentCount() > 0) {
        seq = getArgument(0).eval(contextSequence, contextItem);
    } else {
        // Otherwise, we take the context sequence and we iterate over it
        seq = contextSequence;
    }
    if (seq == null) {
        throw new XPathException(this, ErrorCodes.XPDY0002, "Undefined context item");
    }
    final Sequence result;
    if (seq.isEmpty()) {
        result = StringValue.EMPTY_STRING;
    } else {
        final Item item = seq.itemAt(0);
        if (!Type.subTypeOf(item.getType(), Type.NODE)) {
            throw new XPathException(this, ErrorCodes.XPTY0004, "item is not a node; got '" + Type.getTypeName(item.getType()) + "'");
        }
        // TODO : how to improve performance ?
        final Node n = ((NodeValue) item).getNode();
        if (n instanceof INode) {
            result = new StringValue(((INode) n).getQName().getStringValue());
        } else {
            result = StringValue.EMPTY_STRING;
        }
    }
    if (context.getProfiler().isEnabled()) {
        context.getProfiler().end(this, "", result);
    }
    return result;
}

Example 23 with NodeValue

use of org.exist.xquery.value.NodeValue in project exist by eXist-db.

the class FunDeepEqual method deepEquals.

public static boolean deepEquals(Item a, Item b, Collator collator) {
    try {
        if (a.getType() == Type.ARRAY || b.getType() == Type.ARRAY) {
            if (a.getType() != b.getType()) {
                return false;
            }
            final ArrayType ar = (ArrayType) a;
            final ArrayType br = (ArrayType) b;
            if (ar.getSize() != br.getSize()) {
                return false;
            }
            for (int i = 0; i < ar.getSize(); i++) {
                if (!deepEqualsSeq(ar.get(i), br.get(i), collator)) {
                    return false;
                }
            }
            return true;
        }
        if (a.getType() == Type.MAP || b.getType() == Type.MAP) {
            if (a.getType() != b.getType()) {
                return false;
            }
            final AbstractMapType amap = (AbstractMapType) a;
            final AbstractMapType bmap = (AbstractMapType) b;
            if (amap.size() != bmap.size()) {
                return false;
            }
            for (final IEntry<AtomicValue, Sequence> aentry : amap) {
                if (!bmap.contains(aentry.key())) {
                    return false;
                }
                if (!deepEqualsSeq(aentry.value(), bmap.get(aentry.key()), collator)) {
                    return false;
                }
            }
            return true;
        }
        final boolean aAtomic = Type.subTypeOf(a.getType(), Type.ATOMIC);
        final boolean bAtomic = Type.subTypeOf(b.getType(), Type.ATOMIC);
        if (aAtomic || bAtomic) {
            if (!aAtomic || !bAtomic) {
                return false;
            }
            try {
                final AtomicValue av = (AtomicValue) a;
                final AtomicValue bv = (AtomicValue) b;
                if (Type.subTypeOfUnion(av.getType(), Type.NUMBER) && Type.subTypeOfUnion(bv.getType(), Type.NUMBER)) {
                    // or if both values are NaN
                    if (((NumericValue) a).isNaN() && ((NumericValue) b).isNaN()) {
                        return true;
                    }
                }
                return ValueComparison.compareAtomic(collator, av, bv, StringTruncationOperator.NONE, Comparison.EQ);
            } catch (final XPathException e) {
                return false;
            }
        }
        if (a.getType() != b.getType()) {
            return false;
        }
        final NodeValue nva = (NodeValue) a;
        final NodeValue nvb = (NodeValue) b;
        if (nva == nvb) {
            return true;
        }
        try {
            // since the symbol table is ignored.
            if (nva.getImplementationType() != NodeValue.IN_MEMORY_NODE && nva.equals(nvb)) // shortcut!
            {
                return true;
            }
        } catch (final XPathException e) {
        // apparently incompatible values, do manual comparison
        }
        final Node na;
        final Node nb;
        switch(a.getType()) {
            case Type.DOCUMENT:
                // NodeValue.getNode() doesn't seem to work for document nodes
                na = nva instanceof Node ? (Node) nva : ((NodeProxy) nva).getOwnerDocument();
                nb = nvb instanceof Node ? (Node) nvb : ((NodeProxy) nvb).getOwnerDocument();
                return compareContents(na, nb);
            case Type.ELEMENT:
                na = nva.getNode();
                nb = nvb.getNode();
                return compareElements(na, nb);
            case Type.ATTRIBUTE:
                na = nva.getNode();
                nb = nvb.getNode();
                return compareNames(na, nb) && safeEquals(na.getNodeValue(), nb.getNodeValue());
            case Type.PROCESSING_INSTRUCTION:
            case Type.NAMESPACE:
                na = nva.getNode();
                nb = nvb.getNode();
                return safeEquals(na.getNodeName(), nb.getNodeName()) && safeEquals(nva.getStringValue(), nvb.getStringValue());
            case Type.TEXT:
            case Type.COMMENT:
                return safeEquals(nva.getStringValue(), nvb.getStringValue());
            default:
                throw new RuntimeException("unexpected item type " + Type.getTypeName(a.getType()));
        }
    } catch (final XPathException e) {
        logger.error(e.getMessage());
        e.printStackTrace();
        return false;
    }
}

Example 24 with NodeValue

use of org.exist.xquery.value.NodeValue in project exist by eXist-db.

the class FunGMLProducers method eval.

@Override
public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
    Sequence result = null;
    try {
        AbstractGMLJDBCIndexWorker indexWorker = (AbstractGMLJDBCIndexWorker) context.getBroker().getIndexController().getWorkerByIndexId(AbstractGMLJDBCIndex.ID);
        if (indexWorker == null) {
            logger.error("Unable to find a spatial index worker");
            throw new XPathException(this, "Unable to find a spatial index worker");
        }
        Geometry geometry = null;
        String targetSRS = null;
        if (isCalledAs("transform")) {
            if (args[0].isEmpty())
                result = Sequence.EMPTY_SEQUENCE;
            else {
                NodeValue geometryNode = (NodeValue) args[0].itemAt(0);
                // Try to get the geometry from the index
                String sourceSRS = null;
                if (geometryNode.getImplementationType() == NodeValue.PERSISTENT_NODE) {
                    sourceSRS = indexWorker.getGeometricPropertyForNode(context, (NodeProxy) geometryNode, "SRS_NAME").getStringValue();
                    geometry = indexWorker.getGeometryForNode(context.getBroker(), (NodeProxy) geometryNode, false);
                    hasUsedIndex = true;
                }
                // Otherwise, build it
                if (geometry == null) {
                    sourceSRS = ((Element) geometryNode.getNode()).getAttribute("srsName").trim();
                    geometry = indexWorker.streamNodeToGeometry(context, geometryNode);
                }
                if (geometry == null) {
                    logger.error("Unable to get a geometry from the node");
                    throw new XPathException("Unable to get a geometry from the node");
                }
                targetSRS = args[1].itemAt(0).getStringValue().trim();
                geometry = indexWorker.transformGeometry(geometry, sourceSRS, targetSRS);
            }
        } else if (isCalledAs("WKTtoGML")) {
            if (args[0].isEmpty())
                result = Sequence.EMPTY_SEQUENCE;
            else {
                String wkt = args[0].itemAt(0).getStringValue();
                WKTReader wktReader = new WKTReader();
                try {
                    geometry = wktReader.read(wkt);
                } catch (ParseException e) {
                    logger.error(e.getMessage());
                    throw new XPathException(e);
                }
                if (geometry == null) {
                    logger.error("Unable to get a geometry from the node");
                    throw new XPathException("Unable to get a geometry from the node");
                }
                targetSRS = args[1].itemAt(0).getStringValue().trim();
            }
        } else if (isCalledAs("buffer")) {
            if (args[0].isEmpty())
                result = Sequence.EMPTY_SEQUENCE;
            else {
                NodeValue geometryNode = (NodeValue) args[0].itemAt(0);
                // Try to get the geometry from the index
                if (geometryNode.getImplementationType() == NodeValue.PERSISTENT_NODE) {
                    targetSRS = indexWorker.getGeometricPropertyForNode(context, (NodeProxy) geometryNode, "SRS_NAME").getStringValue();
                    geometry = indexWorker.getGeometryForNode(context.getBroker(), (NodeProxy) geometryNode, false);
                    hasUsedIndex = true;
                }
                // Otherwise, build it
                if (geometry == null) {
                    targetSRS = ((Element) geometryNode.getNode()).getAttribute("srsName").trim();
                    geometry = indexWorker.streamNodeToGeometry(context, geometryNode);
                }
                if (geometry == null) {
                    logger.error("Unable to get a geometry from the node");
                    throw new XPathException("Unable to get a geometry from the node");
                }
                double distance = ((DoubleValue) args[1].itemAt(0)).getDouble();
                int quadrantSegments = 8;
                int endCapStyle = BufferOp.CAP_ROUND;
                if (getArgumentCount() > 2 && Type.subTypeOf(args[2].itemAt(0).getType(), Type.INTEGER))
                    quadrantSegments = ((IntegerValue) args[2].itemAt(0)).getInt();
                if (getArgumentCount() > 3 && Type.subTypeOf(args[3].itemAt(0).getType(), Type.INTEGER))
                    endCapStyle = ((IntegerValue) args[3].itemAt(0)).getInt();
                switch(endCapStyle) {
                    case BufferOp.CAP_ROUND:
                    case BufferOp.CAP_BUTT:
                    case BufferOp.CAP_SQUARE:
                        // OK
                        break;
                    default:
                        {
                            logger.error("Invalid line end style");
                            throw new XPathException("Invalid line end style");
                        }
                }
                geometry = geometry.buffer(distance, quadrantSegments, endCapStyle);
            }
        } else if (isCalledAs("getBbox")) {
            if (args[0].isEmpty())
                result = Sequence.EMPTY_SEQUENCE;
            else {
                NodeValue geometryNode = (NodeValue) args[0].itemAt(0);
                // Try to get the geometry from the index
                if (geometryNode.getImplementationType() == NodeValue.PERSISTENT_NODE) {
                    targetSRS = indexWorker.getGeometricPropertyForNode(context, (NodeProxy) geometryNode, "SRS_NAME").getStringValue();
                    geometry = indexWorker.getGeometryForNode(context.getBroker(), (NodeProxy) geometryNode, false);
                    hasUsedIndex = true;
                }
                // Otherwise, build it
                if (geometry == null) {
                    targetSRS = ((Element) geometryNode.getNode()).getAttribute("srsName").trim();
                    geometry = indexWorker.streamNodeToGeometry(context, geometryNode);
                }
                if (geometry == null) {
                    logger.error("Unable to get a geometry from the node");
                    throw new XPathException("Unable to get a geometry from the node");
                }
                geometry = geometry.getEnvelope();
            }
        } else if (isCalledAs("convexHull")) {
            if (args[0].isEmpty())
                result = Sequence.EMPTY_SEQUENCE;
            else {
                NodeValue geometryNode = (NodeValue) args[0].itemAt(0);
                // Try to get the geometry from the index
                if (geometryNode.getImplementationType() == NodeValue.PERSISTENT_NODE) {
                    targetSRS = indexWorker.getGeometricPropertyForNode(context, (NodeProxy) geometryNode, "SRS_NAME").getStringValue();
                    geometry = indexWorker.getGeometryForNode(context.getBroker(), (NodeProxy) geometryNode, false);
                    hasUsedIndex = true;
                }
                // Otherwise, build it
                if (geometry == null) {
                    targetSRS = ((Element) geometryNode.getNode()).getAttribute("srsName").trim();
                    geometry = indexWorker.streamNodeToGeometry(context, geometryNode);
                }
                if (geometry == null) {
                    logger.error("Unable to get a geometry from the node");
                    throw new XPathException("Unable to get a geometry from the node");
                }
                geometry = geometry.convexHull();
            }
        } else if (isCalledAs("boundary")) {
            if (args[0].isEmpty())
                result = Sequence.EMPTY_SEQUENCE;
            else {
                NodeValue geometryNode = (NodeValue) args[0].itemAt(0);
                // Try to get the geometry from the index
                if (geometryNode.getImplementationType() == NodeValue.PERSISTENT_NODE) {
                    targetSRS = indexWorker.getGeometricPropertyForNode(context, (NodeProxy) geometryNode, "SRS_NAME").getStringValue();
                    geometry = indexWorker.getGeometryForNode(context.getBroker(), (NodeProxy) geometryNode, false);
                    hasUsedIndex = true;
                }
                // Otherwise, build it
                if (geometry == null) {
                    targetSRS = ((Element) geometryNode.getNode()).getAttribute("srsName").trim();
                    geometry = indexWorker.streamNodeToGeometry(context, geometryNode);
                }
                if (geometry == null) {
                    logger.error("Unable to get a geometry from the node");
                    throw new XPathException("Unable to get a geometry from the node");
                }
                geometry = geometry.getBoundary();
            }
        } else {
            Geometry geometry1 = null;
            Geometry geometry2 = null;
            if (args[0].isEmpty() && args[1].isEmpty())
                result = Sequence.EMPTY_SEQUENCE;
            else if (!args[0].isEmpty() && args[1].isEmpty())
                result = args[0].itemAt(0).toSequence();
            else if (args[0].isEmpty() && !args[1].isEmpty())
                result = args[1].itemAt(0).toSequence();
            else {
                NodeValue geometryNode1 = (NodeValue) args[0].itemAt(0);
                NodeValue geometryNode2 = (NodeValue) args[1].itemAt(0);
                String srsName1 = null;
                String srsName2 = null;
                // Try to get the geometries from the index
                if (geometryNode1.getImplementationType() == NodeValue.PERSISTENT_NODE) {
                    srsName1 = indexWorker.getGeometricPropertyForNode(context, (NodeProxy) geometryNode1, "SRS_NAME").getStringValue();
                    geometry1 = indexWorker.getGeometryForNode(context.getBroker(), (NodeProxy) geometryNode1, false);
                    hasUsedIndex = true;
                }
                if (geometryNode2.getImplementationType() == NodeValue.PERSISTENT_NODE) {
                    srsName2 = indexWorker.getGeometricPropertyForNode(context, (NodeProxy) geometryNode2, "SRS_NAME").getStringValue();
                    geometry2 = indexWorker.getGeometryForNode(context.getBroker(), (NodeProxy) geometryNode2, false);
                    hasUsedIndex = true;
                }
                // Otherwise build them
                if (geometry1 == null) {
                    srsName1 = ((Element) geometryNode1.getNode()).getAttribute("srsName").trim();
                    geometry1 = indexWorker.streamNodeToGeometry(context, geometryNode1);
                }
                if (geometry2 == null) {
                    srsName2 = ((Element) geometryNode2.getNode()).getAttribute("srsName").trim();
                    geometry2 = indexWorker.streamNodeToGeometry(context, geometryNode2);
                }
                if (geometry1 == null) {
                    logger.error("Unable to get a geometry from the first node");
                    throw new XPathException("Unable to get a geometry from the first node");
                }
                if (geometry2 == null) {
                    logger.error("Unable to get a geometry from the second node");
                    throw new XPathException("Unable to get a geometry from the second node");
                }
                if (srsName1 == null)
                    throw new XPathException("Unable to get a SRS for the first geometry");
                if (srsName2 == null)
                    throw new XPathException("Unable to get a SRS for the second geometry");
                // Transform the second geometry in the SRS of the first one if necessary
                if (!srsName1.equalsIgnoreCase(srsName2)) {
                    geometry2 = indexWorker.transformGeometry(geometry2, srsName1, srsName2);
                }
                if (isCalledAs("intersection")) {
                    geometry = geometry1.intersection(geometry2);
                } else if (isCalledAs("union")) {
                    geometry = geometry1.union(geometry2);
                } else if (isCalledAs("difference")) {
                    geometry = geometry1.difference(geometry2);
                } else if (isCalledAs("symetricDifference")) {
                    geometry = geometry1.symDifference(geometry2);
                }
                targetSRS = srsName1;
            }
        }
        if (result == null) {
            String gmlPrefix = context.getPrefixForURI(AbstractGMLJDBCIndexWorker.GML_NS);
            if (gmlPrefix == null) {
                logger.error("namespace is not defined:" + SpatialModule.PREFIX);
                throw new XPathException("'" + AbstractGMLJDBCIndexWorker.GML_NS + "' namespace is not defined");
            }
            context.pushDocumentContext();
            try {
                MemTreeBuilder builder = context.getDocumentBuilder();
                DocumentBuilderReceiver receiver = new DocumentBuilderReceiver(builder);
                result = (NodeValue) indexWorker.streamGeometryToElement(geometry, targetSRS, receiver);
            } finally {
                context.popDocumentContext();
            }
        }
    } catch (SpatialIndexException e) {
        logger.error(e.getMessage());
        throw new XPathException(e);
    }
    return result;
}

Example 25 with NodeValue

use of org.exist.xquery.value.NodeValue in project exist by eXist-db.

the class HighlightMatches method eval.

public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
    if (args[0].isEmpty())
        return Sequence.EMPTY_SEQUENCE;
    context.pushDocumentContext();
    final Serializer serializer = context.getBroker().borrowSerializer();
    try (FunctionReference func = (FunctionReference) args[1].itemAt(0)) {
        MemTreeBuilder builder = context.getDocumentBuilder();
        NGramIndexWorker index = (NGramIndexWorker) context.getBroker().getIndexController().getWorkerByIndexId(NGramIndex.ID);
        DocumentBuilderReceiver docBuilder = new DocumentBuilderReceiver(builder);
        MatchCallback matchCb = new MatchCallback(func, docBuilder);
        ValueSequence result = new ValueSequence();
        for (SequenceIterator i = args[0].iterate(); i.hasNext(); ) {
            NodeValue v = (NodeValue) i.nextItem();
            try {
                int nodeNr = builder.getDocument().getLastNode();
                if (v.getImplementationType() == NodeValue.IN_MEMORY_NODE) {
                    ((NodeImpl) v).copyTo(context.getBroker(), docBuilder);
                } else {
                    NodeProxy p = (NodeProxy) v;
                    MatchListener ml = index.getMatchListener(context.getBroker(), p, matchCb);
                    Receiver receiver;
                    if (ml == null)
                        receiver = docBuilder;
                    else {
                        ml.setNextInChain(docBuilder);
                        receiver = ml;
                    }
                    serializer.setReceiver(receiver);
                    serializer.toReceiver((NodeProxy) v, false);
                }
                result.add(builder.getDocument().getNode(++nodeNr));
            } catch (SAXException e) {
                LOG.warn(e.getMessage(), e);
                throw new XPathException(this, e.getMessage());
            }
        }
        return result;
    } finally {
        context.getBroker().returnSerializer(serializer);
        context.popDocumentContext();
    }
}