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

Example 66 with Item

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

the class AbstractUpdateTest method read.

private void read(final BrokerPool pool) throws EXistException, PermissionDeniedException, SAXException, XPathException {
    try (final DBBroker broker = pool.get(Optional.of(pool.getSecurityManager().getSystemSubject()))) {
        final Serializer serializer = broker.borrowSerializer();
        try (final LockedDocument lockedDoc = broker.getXMLResource(TEST_COLLECTION_URI.append("test2/test.xml"), LockMode.READ_LOCK)) {
            assertNotNull("Document '" + TEST_COLLECTION_URI.append("test2/test.xml") + "' should not be null", lockedDoc);
            final String data = serializer.serialize(lockedDoc.getDocument());
        } finally {
            broker.returnSerializer(serializer);
        }
        final XQuery xquery = pool.getXQueryService();
        final Sequence seq = xquery.execute(broker, "/products/product[last()]", null);
        for (final SequenceIterator i = seq.iterate(); i.hasNext(); ) {
            Item next = i.nextItem();
        }
    }
}

Example 67 with Item

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

the class XQueryTest method importExternalClasspathMainModule.

@Test
public void importExternalClasspathMainModule() throws EXistException, IOException, PermissionDeniedException, XPathException, QName.IllegalQNameException {
    final long timestamp = System.currentTimeMillis();
    final BrokerPool brokerPool = BrokerPool.getInstance();
    try (final DBBroker broker = brokerPool.getBroker()) {
        final org.exist.source.Source source = SourceFactory.getSource(broker, "/", "resource:org/exist/xquery/external-classpath-main-module.xq", false);
        final XQuery xquery = brokerPool.getXQueryService();
        final XQueryPool queryPool = brokerPool.getXQueryPool();
        CompiledXQuery compiled = null;
        XQueryContext context = null;
        try {
            compiled = queryPool.borrowCompiledXQuery(broker, source);
            if (compiled == null) {
                context = new XQueryContext(brokerPool);
            } else {
                context = compiled.getContext();
                context.prepareForReuse();
            }
            context.declareVariable(new QName("s"), new IntegerValue(timestamp));
            if (compiled == null) {
                compiled = xquery.compile(context, source);
            }
            final Sequence result = xquery.execute(broker, compiled, null, null);
            assertEquals(1, result.getItemCount());
            final Item item = result.itemAt(0);
            assertTrue(Type.subTypeOf(item.getType(), Type.NODE));
            final Source expected = Input.fromString("<echo>" + timestamp + "</echo>").build();
            final Source actual = Input.fromNode((Node) item).build();
            final Diff diff = DiffBuilder.compare(expected).withTest(actual).checkForSimilar().build();
            assertFalse(diff.toString(), diff.hasDifferences());
        } finally {
            if (compiled != null) {
                compiled.reset();
            }
            if (context != null) {
                context.reset();
            }
            if (compiled != null) {
                queryPool.returnCompiledXQuery(source, compiled);
            }
        }
    }
}

Example 68 with Item

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

the class FunCeiling method eval.

public Sequence eval(Sequence contextSequence, 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());
        }
    }
    final Sequence seq = getArgument(0).eval(contextSequence, contextItem);
    Sequence result;
    if (seq.isEmpty()) {
        result = Sequence.EMPTY_SEQUENCE;
    } else {
        final Item item = seq.itemAt(0);
        NumericValue value;
        if (item instanceof NumericValue) {
            value = (NumericValue) item;
        } else {
            value = (NumericValue) item.convertTo(Type.NUMBER);
        }
        result = value.ceiling();
    }
    if (context.getProfiler().isEnabled()) {
        context.getProfiler().end(this, "", result);
    }
    return result;
}

Example 69 with Item

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

the class TypeswitchExpression method checkType.

private boolean checkType(SequenceType type, Sequence seq) throws XPathException {
    final Cardinality requiredCardinality = type.getCardinality();
    Cardinality actualCardinality;
    if (seq.isEmpty()) {
        actualCardinality = Cardinality.EMPTY_SEQUENCE;
    } else if (seq.hasMany()) {
        actualCardinality = Cardinality._MANY;
    } else {
        actualCardinality = Cardinality.EXACTLY_ONE;
    }
    if (!requiredCardinality.isSuperCardinalityOrEqualOf(actualCardinality)) {
        return false;
    }
    for (final SequenceIterator i = seq.iterate(); i.hasNext(); ) {
        final Item next = i.nextItem();
        if (!type.checkType(next)) {
            return false;
        }
    }
    return true;
}

Example 70 with Item

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

the class DOMIndexerTest method xQuery.

@Test
public void xQuery() throws EXistException, PermissionDeniedException, SAXException, XPathException, IOException {
    final BrokerPool pool = existEmbeddedServer.getBrokerPool();
    try (final DBBroker broker = pool.get(Optional.of(pool.getSecurityManager().getSystemSubject()));
        final StringWriter out = new StringWriter()) {
        final XQuery xquery = pool.getXQueryService();
        final Sequence result = xquery.execute(broker, XQUERY, null);
        final int count = result.getItemCount();
        final Properties props = new Properties();
        props.setProperty(OutputKeys.INDENT, "yes");
        final SAXSerializer serializer = new SAXSerializer(out, props);
        serializer.startDocument();
        for (final SequenceIterator i = result.iterate(); i.hasNext(); ) {
            final Item next = i.nextItem();
            next.toSAX(broker, serializer, props);
        }
        serializer.endDocument();
        out.toString();
    }
}