Examples of org.exist.xmldb.XQueryService

org.exist.xmldb.XQueryService
Execute XQuery expressions on the database. This interface is similar to {@link org.xmldb.api.modules.XPathQueryService}, but provides additional methods to compile an XQuery into an internal representation, which can be executed repeatedly. Since XQuery scripts can be very large, compiling an expression in advance can save a lot of time. @author Wolfgang Meier (wolfgang@exist-db.org)

   */
  private final XQueryService getXQueryService(Database db) {
    try {
      Collection collection = DatabaseManager.getCollection(eXistUrl + XmldbURI.ROOT_COLLECTION, "admin", "admin");
      if (collection != null) {
        XQueryService service = (XQueryService)collection.getService("XQueryService", "1.0");
        collection.close();
        return service;
      }
    } catch (XMLDBException e) {
      fail(e.getMessage());

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   */
  private XQueryService setupDatabase() {    
    try {
      Database  eXist = registerDatabase();
      // Obtain XQuery service
      XQueryService service = null;    
      service = getXQueryService(eXist);
      return service;
    } catch (Exception e) {
      fail("Unable to register database: "  + e.getMessage());
    }

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      System.out.println("processing use-case: " + files[i].getAbsolutePath());
      System.out.println("========================================================================");
      String query = readQuery(files[i]);
      System.out.println(query);
      System.out.println("_________________________________________________________________________________");
      XQueryService service = (XQueryService)root.getService("XQueryService", "1.0");
      ResourceSet results;
      try {
        results = service.query(query);
        for(int j = 0; j < results.getSize(); j++) {
          String output = (String)results.getResource(j).getContent();
          System.out.println(output);
        }
      } catch (Exception e) {

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        TestRunner.run(QueryPoolTest.class);
    }
    
    public void testDifferentQueries() {
        try {
            XQueryService service = (XQueryService) testCollection.getService("XQueryService", "1.0");
            for (int i = 0; i < 10000; i++) {
                System.out.println("Inserting node " + i + "...");
                String query = "update insert <node id='id" + Integer.toHexString(i) + "'>" +
                        "<p>Some longer text <b>content</b> in this node. Some longer text <b>content</b> in this node. " +
                        "Some longer text <b>content</b> in this node. Some longer text <b>content</b> in this node.</p>" +
                        "</node> " +
                        "into //test[@id = 't1']";
                service.execute(new StringSource(query));
            }
        } catch (XMLDBException e) {
            e.printStackTrace();
            fail(e.getMessage());
        }

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    } catch (XMLDBException e) {
      fail("Unable to register database: "  + e.getMessage());
    }


    // Obtain XQuery service
    XQueryService service = null;
    try {
      service = getXQueryService(eXist);
      if (service == null) {
        fail("Failed to obtain xquery service instance!");
      }

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   * @throws XMLDBException on database error
   */
  private final XQueryService getXQueryService(Database db) throws XMLDBException {
    Collection collection = DatabaseManager.getCollection(eXistUrl + XmldbURI.ROOT_COLLECTION, "admin", "");
    if (collection != null) {
      XQueryService service = (XQueryService)collection.getService("XQueryService", "1.0");
      collection.close();
      return service;
    }
    return null;
  }

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