/**
* This method retrieves an xml document from the database based on its resource identifier. The
* document is returned as an org.w3c.dom.Document.
*
* @param collection The name of the collection to look for the document.
* @param resourceId The resource identifier of the document to be retrieved.
* @param username The identifier of the user calling the method used for authentication.
* @param password The password of the user calling the method used for authentication.
* @return The xml document retrieved as an org.w3c.dom.Document.
*/
public Document retrieveDocument(
String collection, String resourceId, String username, String password) {
Document doc = null;
try {
// initialize database driver
Class cl = Class.forName(_driver);
Database database = (Database) cl.newInstance();
DatabaseManager.registerDatabase(database);
// get the collection
Collection col = DatabaseManager.getCollection(_URI + collection, username, password);
col.setProperty(OutputKeys.INDENT, "no");
XMLResource res = (XMLResource) col.getResource(resourceId);
if (res == null) System.out.println("document not found!");
else {
doc = (Document) (res.getContentAsDOM()).getOwnerDocument();
}
} catch (Exception e) {
e.printStackTrace();
}
return doc;
}
/**
* This method stores an xml document given as an org.w3c.dom.Document to the database giving it
* an indentifier. If the identifier provided is null, then the database generates a unique
* identifier on its own.
*
* @param doc The dom represntation of the document to be stored as an org.w3c.dom.Document.
* @param resourceId The resourceId to give to the document as a unique identifier within the
* database. If null a unique identifier is automatically generated.
* @param collection The name of the collection to store the document under. If it does not exist,
* it is created.
* @param username The identifier of the user calling the method used for authentication.
* @param password The password of the user calling the method used for authentication.
*/
public void storeDomDocument(
Document doc, String resourceId, String collection, String username, String password) {
try {
// initialize driver
Class cl = Class.forName(_driver);
Database database = (Database) cl.newInstance();
DatabaseManager.registerDatabase(database);
// try to get collection
Collection col = DatabaseManager.getCollection(_URI + collection, username, password);
if (col == null) {
// collection does not exist: get root collection and create
// for simplicity, we assume that the new collection is a
// direct child of the root collection, e.g. /db/test.
// the example will fail otherwise.
Collection root = DatabaseManager.getCollection(_URI + "/db");
CollectionManagementService mgtService =
(CollectionManagementService) root.getService("CollectionManagementService", "1.0");
col = mgtService.createCollection(collection.substring("/db".length()));
}
// create new XMLResource; an id will be assigned to the new resource
XMLResource document = (XMLResource) col.createResource(resourceId, "XMLResource");
document.setContentAsDOM(doc.getDocumentElement());
col.storeResource(document);
} catch (Exception e) {
e.printStackTrace();
}
}
public Collection getOrCreateCollection(String path) throws XMLDBException {
path = StringUtils.removeStart(path, "/");
path = StringUtils.removeEnd(path, "/");
path = path.replaceAll("[/]+", "/");
String pathWithURI = uri + path;
Collection col = DatabaseManager.getCollection(pathWithURI, userName, password);
if (col != null) {
return col;
} else {
synchronized (syncLock) {
col = DatabaseManager.getCollection(pathWithURI, userName, password);
if (col != null) {
return col;
}
String[] paths = path.split("/");
String[] parentPath = (String[]) ArrayUtils.remove(paths, paths.length - 1);
this.getOrCreateCollection(StringUtils.join(parentPath, '/'));
CollectionManagementService mgt = this.getCollectionManagementService();
col = mgt.createCollection(StringUtils.join(paths, '/'));
// If we are creating a new root collection, we need to set up the indexing configuration
// for this collection,
// which is done by placing a collection.xconf file into the config path structure.
if (paths.length == 1 && getCollectionRoot().endsWith(paths[0])) {
log.info("Configuring Indexes for Collection " + paths[0]);
// Add the index configuration file for our root config
try {
String confFilePath = "/collection.xconf";
String confFileXml =
IOUtils.toString(this.getClass().getResourceAsStream(confFilePath), "UTF-8");
Collection configCol = getOrCreateCollection("/system/config/db/" + paths[0]);
org.xmldb.api.base.Resource r =
configCol.createResource("collection.xconf", "XMLResource");
r.setContent(confFileXml);
configCol.storeResource(r);
log.info(
"Wrote index configuration " + r.getParentCollection().getName() + "/" + r.getId());
} catch (Exception e) {
log.error(
"Failure configuring indexes for collection "
+ paths[0]
+ " - indexes will not be available!",
e);
}
}
return col;
}
}
}
@Override
public void afterPropertiesSet() throws Exception {
if (StringUtils.isNotBlank(this.existHome)) {
System.setProperty(ExistServiceConstants.EXIST_HOME_PROP, this.existHome);
System.setProperty("exist.initdb", "true");
}
final String driver = "org.exist.xmldb.DatabaseImpl";
// initialize database driver
Class<?> cl = Class.forName(driver);
Database database = (Database) cl.newInstance();
database.setProperty("create-database", "true");
DatabaseManager.registerDatabase(database);
Collection root = this.getOrCreateCollection("");
xQueryService = (XQueryService) root.getService("XPathQueryService", "1.0");
collectionManagementService =
(CollectionManagementService) root.getService("CollectionManagementService", "1.0");
databaseInstanceManager =
(DatabaseInstanceManager) root.getService("DatabaseInstanceManager", "1.0");
indexQueryService = (IndexQueryService) root.getService("IndexQueryService", "1.0");
xUpdateQueryService = (XUpdateQueryService) root.getService("XUpdateQueryService", "1.0");
// This doesn't exist in existDB 2.1. ValidationModule now maybe? Not sure. possibly an
// extension not loaded...
// validationService = (ValidationService) root.getService("ValidationService", "1.0");
this.namespaceMappingProperties = this.cts2Marshaller.getNamespaceMappingProperties();
this.xQueryService = this.createXQueryService("");
}
private void startup(Configuration configuration) throws ServletException {
if (configuration == null) {
throw new ServletException("database has not been configured");
}
LOG.info("configuring eXist instance");
try {
if (!BrokerPool.isConfigured()) {
BrokerPool.configure(1, 5, configuration);
}
} catch (EXistException e) {
throw new ServletException(e.getMessage());
} catch (DatabaseConfigurationException e) {
throw new ServletException(e.getMessage());
}
try {
LOG.info("registering XMLDB driver");
Class clazz = Class.forName("org.exist.xmldb.DatabaseImpl");
Database database = (Database) clazz.newInstance();
DatabaseManager.registerDatabase(database);
} catch (ClassNotFoundException e) {
LOG.info("ERROR", e);
} catch (InstantiationException e) {
LOG.info("ERROR", e);
} catch (IllegalAccessException e) {
LOG.info("ERROR", e);
} catch (XMLDBException e) {
LOG.info("ERROR", e);
}
}
/* (non-Javadoc)
* @see org.apache.tools.ant.Task#execute()
*/
public void execute() throws BuildException {
if (uri == null) throw new BuildException("You have to specify an XMLDB collection URI");
if (resource == null && collection == null)
throw new BuildException(
"Missing parameter: either resource or collection should be specified");
registerDatabase();
try {
log("Get base collection: " + uri, Project.MSG_DEBUG);
Collection base = DatabaseManager.getCollection(uri, user, password);
if (base == null) {
throw new BuildException("Collection " + uri + " could not be found.");
}
log(
"Create collection management service for collection " + base.getName(),
Project.MSG_DEBUG);
CollectionManagementServiceImpl service =
(CollectionManagementServiceImpl) base.getService("CollectionManagementService", "1.0");
if (resource != null) {
log("Copying resource: " + resource, Project.MSG_INFO);
Resource res = base.getResource(resource);
if (res == null) throw new BuildException("Resource " + resource + " not found.");
service.copyResource(resource, destination, name);
} else {
log("Copying collection: " + collection, Project.MSG_INFO);
service.copy(collection, destination, name);
}
} catch (XMLDBException e) {
throw new BuildException("XMLDB exception during remove: " + e.getMessage(), e);
}
}
/**
* Main method of the example class.
*
* @param args (ignored) command-line arguments
* @throws Exception exception
*/
public static void main(final String[] args) throws Exception {
System.out.println("=== XMLDBInsert ===");
// Collection instance
Collection col = null;
try {
// Register the database
Class<?> c = Class.forName(DRIVER);
Database db = (Database) c.newInstance();
DatabaseManager.registerDatabase(db);
System.out.println("\n* Get collection.");
// Receive the collection
col = DatabaseManager.getCollection(DBNAME);
// ID for the new document
String id = "world";
// Content of the new document
String doc = "<xml>Hello World!</xml>";
System.out.println("\n* Create new resource.");
// Create a new XML resource with the specified ID
XMLResource res = (XMLResource) col.createResource(id, XMLResource.RESOURCE_TYPE);
// Set the content of the XML resource as the document
res.setContent(doc);
System.out.println("\n* Store new resource.");
// Store the resource into the database
col.storeResource(res);
} catch (final XMLDBException ex) {
// Handle exceptions
System.err.println("XML:DB Exception occurred " + ex.errorCode);
ex.printStackTrace();
} finally {
// Close the collection
if (col != null) col.close();
}
}
/*
* @see TestCase#tearDown()
*/
protected void tearDown() {
try {
Collection root = DatabaseManager.getCollection(XmldbURI.LOCAL_DB, "admin", "");
CollectionManagementService service =
(CollectionManagementService) root.getService("CollectionManagementService", "1.0");
service.removeCollection(TEST_COLLECTION_NAME);
DatabaseManager.deregisterDatabase(database);
DatabaseInstanceManager dim =
(DatabaseInstanceManager) testCollection.getService("DatabaseInstanceManager", "1.0");
dim.shutdown();
database = null;
testCollection = null;
System.out.println("tearDown PASSED");
} catch (XMLDBException e) {
fail(e.getMessage());
}
}
/**
* Main method of the example class.
*
* @param args (ignored) command-line arguments
* @throws Exception exception
*/
public static void main(final String[] args) throws Exception {
System.out.println("=== XMLDBQuery ===\n");
System.out.println("* Run query via XML:DB:");
// Collection instance
Collection coll = null;
try {
// Register the database
Class<?> c = Class.forName(DRIVER);
Database db = (Database) c.newInstance();
DatabaseManager.registerDatabase(db);
// Receive the database
coll = DatabaseManager.getCollection(DBNAME);
// Receive the XPath query service
XPathQueryService service = (XPathQueryService) coll.getService("XPathQueryService", "1.0");
// Execute the query and receives all results
ResourceSet set = service.query(QUERY);
// Create a result iterator
ResourceIterator iter = set.getIterator();
// Loop through all result items
while (iter.hasMoreResources()) {
// Receive the next results
Resource res = iter.nextResource();
// Write the result to the console
System.out.println(res.getContent());
}
} catch (final XMLDBException ex) {
// Handle exceptions
System.err.println("XML:DB Exception occured " + ex.errorCode);
} finally {
// Close the collection
if (coll != null) coll.close();
}
}
protected void setUp() {
try {
// initialize driver
Class<?> cl = Class.forName("org.exist.xmldb.DatabaseImpl");
Database database = (Database) cl.newInstance();
database.setProperty("create-database", "true");
DatabaseManager.registerDatabase(database);
root = DatabaseManager.getCollection(XmldbURI.LOCAL_DB, "admin", "");
CollectionManagementService service =
(CollectionManagementService) root.getService("CollectionManagementService", "1.0");
root = service.createCollection("test");
FILE_STORED = "big.xml";
doc = (XMLResource) root.createResource(FILE_STORED, "XMLResource");
} catch (ClassNotFoundException e) {
} catch (InstantiationException e) {
} catch (IllegalAccessException e) {
} catch (XMLDBException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* This method performs an XPath query to the database and returns the results as a Vector of
* Strings.
*
* @param collection The name of the collection to look for the document.
* @param query A string containing an XPath expression which shall act as a query against the
* database.
* @param username The identifier of the user calling the method used for authentication.
* @param password The password of the user calling the method used for authentication.
* @return A Vector containing the answers to the query as Strings.
*/
public Vector query(String collection, String query, String username, String password) {
Vector response = new Vector();
try {
Class cl = Class.forName(_driver);
Database database = (Database) cl.newInstance();
DatabaseManager.registerDatabase(database);
Collection col = DatabaseManager.getCollection(_URI + collection, username, password);
XPathQueryService service = (XPathQueryService) col.getService("XPathQueryService", "1.0");
service.setProperty("indent", "yes");
ResourceSet result = service.query(query);
ResourceIterator i = result.getIterator();
while (i.hasMoreResources()) {
Resource r = i.nextResource();
response.add((String) r.getContent());
}
} catch (Exception e) {
e.printStackTrace();
}
return response;
}
public static void main(String args[]) throws Exception {
String driver = "org.exist.xmldb.DatabaseImpl";
Class cl = Class.forName(driver);
Database database = (Database) cl.newInstance();
DatabaseManager.registerDatabase(database);
Collection col = DatabaseManager.getCollection("xmldb:exist:///db", "admin", "");
XPathQueryService service = (XPathQueryService) col.getService("XPathQueryService", "1.0");
service.setProperty("indent", "yes");
ResourceSet result =
service.query(
"for $s in //intervention/(speaker|writer)/affiliation[@EPparty ='PSE'] return data($s/../../(speech|writing)/@ref)");
ResourceIterator i = result.getIterator();
while (i.hasMoreResources()) {
Resource r = i.nextResource();
System.out.println((String) r.getContent());
}
// shut down the database
DatabaseInstanceManager manager =
(DatabaseInstanceManager) col.getService("DatabaseInstanceManager", "1.0");
manager.shutdown();
}
/** @see TestCase#setUp() */
protected void setUp() throws Exception {
super.setUp();
String name = "de.xplib.nexd.engine.xapi.DatabaseImpl";
Class clazz = Class.forName(name);
this.db = (SixdmlDatabase) clazz.newInstance();
DatabaseManager.registerDatabase(this.db);
this.coll = (SixdmlCollection) this.db.getCollection("nexd://localhost./db/docs", "sa", "");
this.vcoll =
(VirtualCollection) this.db.getCollection("nexd://localhost./db/vcl-data/myvc", "sa", "");
this.dbColl = (SixdmlCollection) this.db.getCollection("nexd://localhost./db", "sa", "");
}
public void init(ServletConfig config) throws ServletException {
super.init(config);
query = config.getInitParameter("xquery");
if (query == null) {
throw new ServletException("RedirectorServlet requires a parameter 'xquery'.");
}
user = config.getInitParameter("user");
if (user == null) {
user = DEFAULT_USER;
}
password = config.getInitParameter("password");
if (password == null) {
password = DEFAULT_PASS;
}
final String confCollectionURI = config.getInitParameter("uri");
if (confCollectionURI == null) {
collectionURI = DEFAULT_URI;
} else {
try {
collectionURI = XmldbURI.xmldbUriFor(confCollectionURI);
} catch (final URISyntaxException e) {
throw new ServletException("Invalid XmldbURI for parameter 'uri': " + e.getMessage(), e);
}
}
try {
final Class<?> driver = Class.forName(DRIVER);
final Database database = (Database) driver.newInstance();
database.setProperty("create-database", "true");
DatabaseManager.registerDatabase(database);
} catch (final Exception e) {
final String errorMessage = "Failed to initialize database driver";
LOG.error(errorMessage, e);
throw new ServletException(errorMessage + ": " + e.getMessage(), e);
}
}
/**
* Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
// Identify Sources
String path = getServletContext().getRealPath("/WEB-INF/");
String XMLFileName = path + "/Home.xml";
String XSLFileName = path + "/Home.xsl";
StreamSource XMLSource = new StreamSource(XMLFileName);
StreamSource XSLSource = new StreamSource(XSLFileName);
String URI = "xmldb:exist://localhost:8444/exist/xmlrpc";
String driver = "org.exist.xmldb.DatabaseImpl";
XMLResource res = null;
Node resNode = null;
Document doc = null;
try {
Class cl = Class.forName(driver);
Database database = (Database) cl.newInstance();
DatabaseManager.registerDatabase(database);
// get the collection
Collection col =
DatabaseManager.getCollection(URI + "/db/AnswerQuest", "admin", "password");
col.setProperty(OutputKeys.INDENT, "no");
res = (XMLResource) col.getResource("Home.xml");
resNode = res.getContentAsDOM();
doc = (Document) resNode;
} catch (Exception e) {
System.err.println("Error Document: " + e.getMessage());
}
DOMSource origDocSource = new DOMSource(doc);
// Identify Result
StreamResult homeOutput = new StreamResult(out);
// Create TransformerFactory
TransformerFactory xFactory = TransformerFactory.newInstance();
// Create Transformer
Transformer optimusPrime = xFactory.newTransformer(XSLSource);
// Apply transform
optimusPrime.transform(XMLSource, homeOutput);
} catch (TransformerConfigurationException ex) {
System.out.println("Encountered TransformerConfiguration Error: " + ex.getMessage());
} catch (TransformerException ex) {
System.out.println("Encountered Transformer Error: " + ex.getMessage());
} finally {
out.close();
}
}
protected void setUp() {
try {
// initialize driver
Class<?> cl = Class.forName("org.exist.xmldb.DatabaseImpl");
database = (Database) cl.newInstance();
database.setProperty("create-database", "true");
DatabaseManager.registerDatabase(database);
Collection root = DatabaseManager.getCollection(XmldbURI.LOCAL_DB, "admin", "");
CollectionManagementService service =
(CollectionManagementService) root.getService("CollectionManagementService", "1.0");
testCollection = service.createCollection(TEST_COLLECTION_NAME);
assertNotNull(testCollection);
service =
(CollectionManagementService)
testCollection.getService("CollectionManagementService", "1.0");
Collection xsl1 = service.createCollection("xsl1");
assertNotNull(xsl1);
Collection xsl3 = service.createCollection("xsl3");
assertNotNull(xsl3);
service = (CollectionManagementService) xsl1.getService("CollectionManagementService", "1.0");
Collection xsl2 = service.createCollection("xsl2");
assertNotNull(xsl2);
String doc1 =
"<?xml version='1.0' encoding='UTF-8'?>\n"
+ "<xsl:stylesheet xmlns:xsl='http://www.w3.org/1999/XSL/Transform' version='1.0'>\n"
+ "<xsl:import href='xsl2/2.xsl' />\n"
+ "<xsl:template match='/'>\n"
+ "<doc>"
+ "<p>Start Template 1</p>"
+ "<xsl:call-template name='template-2' />"
+ "<xsl:call-template name='template-3' />"
+ "<p>End Template 1</p>"
+ "</doc>"
+ "</xsl:template>"
+ "</xsl:stylesheet>";
String doc2 =
"<?xml version='1.0' encoding='UTF-8'?>\n"
+ "<xsl:stylesheet xmlns:xsl='http://www.w3.org/1999/XSL/Transform' version='1.0'>\n"
+ "<xsl:import href='../../xsl3/3.xsl' />\n"
+ "<xsl:template name='template-2'>\n"
+ "<p>Start Template 2</p>"
+ "<xsl:call-template name='template-3' />"
+ "<p>End Template 2</p>"
+ "</xsl:template>"
+ "</xsl:stylesheet>";
String doc3 =
"<?xml version='1.0' encoding='UTF-8'?>\n"
+ "<xsl:stylesheet xmlns:xsl='http://www.w3.org/1999/XSL/Transform' version='1.0'>\n"
+ "<xsl:template name='template-3'>\n"
+ "<p>Template 3</p>"
+ "</xsl:template>"
+ "</xsl:stylesheet>";
addXMLDocument(xsl1, doc1, "1.xsl");
addXMLDocument(xsl2, doc2, "2.xsl");
addXMLDocument(xsl3, doc3, "3.xsl");
} catch (ClassNotFoundException e) {
} catch (InstantiationException e) {
} catch (IllegalAccessException e) {
} catch (XMLDBException e) {
e.printStackTrace();
}
}
protected void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
if (request.getCharacterEncoding() == null)
try {
request.setCharacterEncoding("UTF-8");
} catch (final IllegalStateException e) {
}
// Try to find the XQuery
final String qpath = getServletContext().getRealPath(query);
final File f = new File(qpath);
if (!(f.canRead() && f.isFile())) {
throw new ServletException("Cannot read XQuery source from " + f.getAbsolutePath());
}
final FileSource source = new FileSource(f, "UTF-8", true);
try {
// Prepare and execute the XQuery
final Collection collection =
DatabaseManager.getCollection(collectionURI.toString(), user, password);
final XQueryService service = (XQueryService) collection.getService("XQueryService", "1.0");
if (!((CollectionImpl) collection).isRemoteCollection()) {
service.declareVariable(
RequestModule.PREFIX + ":request", new HttpRequestWrapper(request, "UTF-8", "UTF-8"));
service.declareVariable(
ResponseModule.PREFIX + ":response", new HttpResponseWrapper(response));
service.declareVariable(
SessionModule.PREFIX + ":session", new HttpSessionWrapper(request.getSession(false)));
}
final ResourceSet result = service.execute(source);
String redirectTo = null;
String servletName = null;
String path = null;
RequestWrapper modifiedRequest = null;
// parse the query result element
if (result.getSize() == 1) {
final XMLResource resource = (XMLResource) result.getResource(0);
Node node = resource.getContentAsDOM();
if (node.getNodeType() == Node.DOCUMENT_NODE) {
node = ((Document) node).getDocumentElement();
}
if (node.getNodeType() != Node.ELEMENT_NODE) {
response.sendError(
HttpServletResponse.SC_BAD_REQUEST,
"Redirect XQuery should return an XML element. Received: " + resource.getContent());
return;
}
Element elem = (Element) node;
if (!(Namespaces.EXIST_NS.equals(elem.getNamespaceURI())
&& "dispatch".equals(elem.getLocalName()))) {
response.sendError(
HttpServletResponse.SC_BAD_REQUEST,
"Redirect XQuery should return an element <exist:dispatch>. Received: "
+ resource.getContent());
return;
}
if (elem.hasAttribute("path")) {
path = elem.getAttribute("path");
} else if (elem.hasAttribute("servlet-name")) {
servletName = elem.getAttribute("servlet-name");
} else if (elem.hasAttribute("redirect")) {
redirectTo = elem.getAttribute("redirect");
} else {
response.sendError(
HttpServletResponse.SC_BAD_REQUEST,
"Element <exist:dispatch> should either provide an attribute 'path' or 'servlet-name'. Received: "
+ resource.getContent());
return;
}
// Check for add-parameter elements etc.
if (elem.hasChildNodes()) {
node = elem.getFirstChild();
while (node != null) {
if (node.getNodeType() == Node.ELEMENT_NODE
&& Namespaces.EXIST_NS.equals(node.getNamespaceURI())) {
elem = (Element) node;
if ("add-parameter".equals(elem.getLocalName())) {
if (modifiedRequest == null) {
modifiedRequest = new RequestWrapper(request);
}
modifiedRequest.addParameter(elem.getAttribute("name"), elem.getAttribute("value"));
}
}
node = node.getNextSibling();
}
}
}
if (redirectTo != null) {
// directly redirect to the specified URI
response.sendRedirect(redirectTo);
return;
}
// Get a RequestDispatcher, either from the servlet context or the request
RequestDispatcher dispatcher;
if (servletName != null && servletName.length() > 0) {
dispatcher = getServletContext().getNamedDispatcher(servletName);
} else {
LOG.debug("Dispatching to " + path);
dispatcher = getServletContext().getRequestDispatcher(path);
if (dispatcher == null) {
dispatcher = request.getRequestDispatcher(path);
}
}
if (dispatcher == null) {
response.sendError(
HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
"Could not create a request dispatcher. Giving up.");
return;
}
if (modifiedRequest != null) {
request = modifiedRequest;
}
// store the original request URI to org.exist.forward.request-uri
request.setAttribute("org.exist.forward.request-uri", request.getRequestURI());
request.setAttribute("org.exist.forward.servlet-path", request.getServletPath());
// finally, execute the forward
dispatcher.forward(request, response);
} catch (final XMLDBException e) {
throw new ServletException(
"An error occurred while initializing RedirectorServlet: " + e.getMessage(), e);
}
}
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
String URI = "xmldb:exist://localhost:8444/exist/xmlrpc";
String driver = "org.exist.xmldb.DatabaseImpl";
XMLResource res = null;
Node resNode = null;
Document doc = null;
String path = getServletContext().getRealPath("/");
String XSLFileName = path + "/Slideshow.xsl";
File XslFile = new File(XSLFileName);
String name;
String rating;
try {
name = request.getParameter("name");
rating = request.getParameter("rating");
if (name == null) {
name = "";
}
if (rating == null) {
rating = "";
}
} catch (Exception e) {
name = "";
rating = "";
}
try {
Class cl = Class.forName(driver);
Database database = (Database) cl.newInstance();
DatabaseManager.registerDatabase(database);
// get the collection
Collection col = DatabaseManager.getCollection(URI + "/db/Project", "admin", "password");
XQueryService service = (XQueryService) col.getService("XQueryService", "1.0");
XQueryService another = (XQueryService) col.getService("XQueryService", "1.0");
service.setProperty("indent", "yes");
another.setProperty("indent", "yes");
String queryString = "";
if (!(rating.equals(""))) {
service.declareVariable("rating", "");
queryString =
"for $rating in //app//name[text()='"
+ name
+ "']/../rating "
+ "return update replace $rating with <rating>"
+ rating
+ "</rating>";
service.query(queryString);
}
col.setProperty(OutputKeys.INDENT, "no");
res = (XMLResource) col.getResource("Review.xml");
resNode = res.getContentAsDOM();
doc = (Document) resNode;
} catch (Exception e) {
System.err.println("Error Document: " + e.getMessage());
}
DOMSource origDocSource = new DOMSource(doc);
try {
TransformerFactory transformerFactory = TransformerFactory.newInstance();
StreamSource stylesheet = new StreamSource(XslFile);
Transformer transformer = transformerFactory.newTransformer(stylesheet);
NodeList appNodes = doc.getElementsByTagName("name");
int numEvent = appNodes.getLength();
String prev;
String next;
for (int i = 0; i < numEvent; i++) {
Node eventNode = appNodes.item(i);
NodeList eventNodeListChildren = eventNode.getChildNodes();
Node eventTextNode = eventNodeListChildren.item(0);
String appname = eventTextNode.getNodeValue();
if (name.equals(appname)) {
if (i != 0) {
prev = appNodes.item(i - 1).getChildNodes().item(0).getNodeValue();
} else {
prev = appNodes.item(numEvent - 1).getChildNodes().item(0).getNodeValue();
}
if (i != (numEvent - 1)) {
next = appNodes.item(i + 1).getChildNodes().item(0).getNodeValue();
} else {
next = appNodes.item(0).getChildNodes().item(0).getNodeValue();
}
transformer.setParameter("app_name", appname);
transformer.setParameter("prev_name", prev);
transformer.setParameter("next_name", next);
transformer.transform(origDocSource, new StreamResult(out));
}
}
} catch (Exception e) {
out.println("Exception transformation :" + e.getMessage());
e.printStackTrace(out);
} finally {
out.close();
}
}