Examples with XQuery org.exist.xquery.XQuery used on opensource projects

Example 21 with XQuery

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

the class DatabaseResources method executeQuery.

public Sequence executeQuery(String queryPath, Map<String, String> params, Subject user) {
    final String namespace = params.get(TARGETNAMESPACE);
    final String publicId = params.get(PUBLICID);
    final String catalogPath = params.get(CATALOG);
    final String collection = params.get(COLLECTION);
    if (logger.isDebugEnabled()) {
        logger.debug("collection={} namespace={} publicId={} catalogPath={}", collection, namespace, publicId, catalogPath);
    }
    Sequence result = null;
    try (final DBBroker broker = brokerPool.get(Optional.ofNullable(user))) {
        final XQuery xquery = brokerPool.getXQueryService();
        final XQueryContext context = new XQueryContext(brokerPool);
        if (collection != null) {
            context.declareVariable(COLLECTION, collection);
        }
        if (namespace != null) {
            context.declareVariable(TARGETNAMESPACE, namespace);
        }
        if (publicId != null) {
            context.declareVariable(PUBLICID, publicId);
        }
        if (catalogPath != null) {
            context.declareVariable(CATALOG, catalogPath);
        }
        CompiledXQuery compiled = xquery.compile(context, new ClassLoaderSource(queryPath));
        result = xquery.execute(broker, compiled, null);
    } catch (final EXistException | XPathException | IOException | PermissionDeniedException ex) {
        logger.error("Problem executing xquery", ex);
        result = null;
    }
    return result;
}

Example 22 with XQuery

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

the class IndexerTest2 method executeQuery.

private String executeQuery() 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 = broker.getBrokerPool().getXQueryService();
        final Sequence result = xquery.execute(broker, XQUERY, null);
        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();
        return out.toString();
    }
}

Example 23 with XQuery

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

the class TestDataGenerator method generate.

public Path[] generate(final DBBroker broker, final Collection collection, final String xqueryContent) throws SAXException {
    try {
        final DocumentSet docs = collection.allDocs(broker, new DefaultDocumentSet(), true);
        final XQuery service = broker.getBrokerPool().getXQueryService();
        final XQueryContext context = new XQueryContext(broker.getBrokerPool());
        context.declareVariable("filename", "");
        context.declareVariable("count", "0");
        context.setStaticallyKnownDocuments(docs);
        final String query = IMPORT + xqueryContent;
        final CompiledXQuery compiled = service.compile(context, query);
        for (int i = 0; i < count; i++) {
            generatedFiles[i] = Files.createTempFile(prefix, ".xml");
            context.declareVariable("filename", generatedFiles[i].getFileName().toString());
            context.declareVariable("count", new Integer(i));
            final Sequence results = service.execute(broker, compiled, Sequence.EMPTY_SEQUENCE);
            final Serializer serializer = broker.borrowSerializer();
            try (final Writer out = Files.newBufferedWriter(generatedFiles[i], StandardCharsets.UTF_8)) {
                final SAXSerializer sax = new SAXSerializer(out, outputProps);
                serializer.setSAXHandlers(sax, sax);
                for (final SequenceIterator iter = results.iterate(); iter.hasNext(); ) {
                    final Item item = iter.nextItem();
                    if (!Type.subTypeOf(item.getType(), Type.NODE)) {
                        continue;
                    }
                    serializer.toSAX((NodeValue) item);
                }
            } finally {
                broker.returnSerializer(serializer);
            }
        }
    } catch (final XPathException | PermissionDeniedException | LockException | IOException e) {
        LOG.error(e.getMessage(), e);
        throw new SAXException(e.getMessage(), e);
    }
    return generatedFiles;
}

Example 24 with XQuery

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

the class Conditional method process.

@Override
public long process(Txn transaction) throws PermissionDeniedException, LockException, EXistException, XPathException, TriggerException {
    LOG.debug("Processing xupdate:if ...");
    final XQuery xquery = broker.getBrokerPool().getXQueryService();
    final XQueryPool pool = broker.getBrokerPool().getXQueryPool();
    final Source source = new StringSource(selectStmt);
    CompiledXQuery compiled = pool.borrowCompiledXQuery(broker, source);
    XQueryContext context;
    if (compiled == null) {
        context = new XQueryContext(broker.getBrokerPool());
    } else {
        context = compiled.getContext();
        context.prepareForReuse();
    }
    // context.setBackwardsCompatibility(true);
    context.setStaticallyKnownDocuments(docs);
    declareNamespaces(context);
    declareVariables(context);
    if (compiled == null)
        try {
            compiled = xquery.compile(context, source);
        } catch (final IOException e) {
            throw new EXistException("An exception occurred while compiling the query: " + e.getMessage());
        }
    Sequence seq = null;
    try {
        seq = xquery.execute(broker, compiled, null);
    } finally {
        context.runCleanupTasks();
        pool.returnCompiledXQuery(source, compiled);
    }
    if (seq.effectiveBooleanValue()) {
        long mods = 0;
        for (final Modification modification : modifications) {
            mods += modification.process(transaction);
            broker.flush();
        }
        if (LOG.isDebugEnabled()) {
            LOG.debug("{} modifications processed.", mods);
        }
        return mods;
    } else {
        return 0;
    }
}

Example 25 with XQuery

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

the class IndexerTest method store_and_retrieve_ws_mixed_content_value.

private String store_and_retrieve_ws_mixed_content_value(final boolean preserve, final String typeXml, final String typeXquery) throws EXistException, IOException, LockException, AuthenticationException, PermissionDeniedException, SAXException, XPathException {
    store_preserve_ws_mixed_content_value(preserve, typeXml);
    final BrokerPool pool = existEmbeddedServer.getBrokerPool();
    try (final DBBroker broker = pool.get(Optional.of(pool.getSecurityManager().getSystemSubject()))) {
        final XQuery xquery = pool.getXQueryService();
        final Sequence result = xquery.execute(broker, typeXquery, null);
        try (final StringWriter out = new StringWriter()) {
            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();
            return out.toString();
        }
    }
}