Examples with XQueryPool org.exist.storage.XQueryPool used on opensource projects

Example 11 with XQueryPool

use of org.exist.storage.XQueryPool in project exist by eXist-db.

the class XQueryURLRewrite method runQuery.

private Sequence runQuery(final DBBroker broker, final RequestWrapper request, final HttpServletResponse response, final ModelAndView model, final URLRewrite staticRewrite, final Properties outputProperties) throws ServletException, XPathException, PermissionDeniedException {
    // Try to find the XQuery
    final SourceInfo sourceInfo = getSourceInfo(broker, request, staticRewrite);
    if (sourceInfo == null) {
        // no controller found
        return Sequence.EMPTY_SEQUENCE;
    }
    final String basePath = staticRewrite == null ? "." : staticRewrite.getTarget();
    final XQuery xquery = broker.getBrokerPool().getXQueryService();
    final XQueryPool xqyPool = broker.getBrokerPool().getXQueryPool();
    CompiledXQuery compiled = null;
    if (compiledCache) {
        compiled = xqyPool.borrowCompiledXQuery(broker, sourceInfo.source);
    }
    final XQueryContext queryContext;
    if (compiled == null) {
        queryContext = new XQueryContext(broker.getBrokerPool());
    } else {
        queryContext = compiled.getContext();
        queryContext.prepareForReuse();
    }
    // Find correct module load path
    queryContext.setModuleLoadPath(sourceInfo.moduleLoadPath);
    declareVariables(queryContext, sourceInfo, staticRewrite, basePath, request, response);
    if (compiled == null) {
        try {
            compiled = xquery.compile(queryContext, sourceInfo.source);
        } catch (final IOException e) {
            throw new ServletException("Failed to read query from " + query, e);
        }
    }
    model.setSourceInfo(sourceInfo);
    try {
        return xquery.execute(broker, compiled, null, outputProperties);
    } finally {
        queryContext.runCleanupTasks();
        xqyPool.returnCompiledXQuery(sourceInfo.source, compiled);
    }
}

Example 12 with XQueryPool

use of org.exist.storage.XQueryPool in project exist by eXist-db.

the class Modification method select.

/**
 * Evaluate the select expression.
 *
 * @param docs the documents to evaludate the expression over
 *
 * @return The selected nodes.
 *
 * @throws PermissionDeniedException if the caller has insufficient priviledges
 * @throws EXistException if the database raises an error
 * @throws XPathException if the XPath raises an error
 */
protected NodeList select(DocumentSet docs) throws PermissionDeniedException, EXistException, XPathException {
    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.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 resultSeq = null;
    try {
        resultSeq = xquery.execute(broker, compiled, null);
    } finally {
        context.runCleanupTasks();
        pool.returnCompiledXQuery(source, compiled);
    }
    if (!(resultSeq.isEmpty() || Type.subTypeOf(resultSeq.getItemType(), Type.NODE))) {
        throw new EXistException("select expression should evaluate to a node-set; got " + Type.getTypeName(resultSeq.getItemType()));
    }
    if (LOG.isDebugEnabled()) {
        LOG.debug("found {} for select: {}", resultSeq.getItemCount(), selectStmt);
    }
    return resultSeq.toNodeSet();
}

Example 13 with XQueryPool

use of org.exist.storage.XQueryPool in project exist by eXist-db.

the class Util method withCompiledQuery.

public static <T> T withCompiledQuery(final DBBroker broker, final Source source, final Function2E<CompiledXQuery, T, XPathException, PermissionDeniedException> op) throws XPathException, PermissionDeniedException, IOException {
    final BrokerPool pool = broker.getBrokerPool();
    final XQuery xqueryService = pool.getXQueryService();
    final XQueryPool xqueryPool = pool.getXQueryPool();
    final CompiledXQuery compiledQuery = compileQuery(broker, xqueryService, xqueryPool, source);
    try {
        return op.apply(compiledQuery);
    } finally {
        if (compiledQuery != null) {
            xqueryPool.returnCompiledXQuery(source, compiledQuery);
        }
    }
}

Example 14 with XQueryPool

use of org.exist.storage.XQueryPool in project exist by eXist-db.

the class Util method withCompiledQuery.

static <T> T withCompiledQuery(final DBBroker broker, final Source source, final Function2E<CompiledXQuery, T, XPathException, PermissionDeniedException> op) throws XPathException, PermissionDeniedException, IOException {
    final BrokerPool pool = broker.getBrokerPool();
    final XQuery xqueryService = pool.getXQueryService();
    final XQueryPool xqueryPool = pool.getXQueryPool();
    final CompiledXQuery compiledQuery = compileQuery(broker, xqueryService, xqueryPool, source);
    try {
        return op.apply(compiledQuery);
    } finally {
        if (compiledQuery != null) {
            xqueryPool.returnCompiledXQuery(source, compiledQuery);
        }
    }
}

Example 15 with XQueryPool

use of org.exist.storage.XQueryPool in project exist by eXist-db.

the class Util method withCompiledQuery.

static <T> T withCompiledQuery(final DBBroker broker, final Source source, final Function2E<CompiledXQuery, T, XPathException, PermissionDeniedException> op) throws XPathException, PermissionDeniedException, IOException {
    final BrokerPool pool = broker.getBrokerPool();
    final XQuery xqueryService = pool.getXQueryService();
    final XQueryPool xqueryPool = pool.getXQueryPool();
    final CompiledXQuery compiledQuery = compileQuery(broker, xqueryService, xqueryPool, source);
    try {
        return op.apply(compiledQuery);
    } finally {
        if (compiledQuery != null) {
            xqueryPool.returnCompiledXQuery(source, compiledQuery);
        }
    }
}