package org.exist.xquery;
import org.exist.xmldb.XQueryService;
import org.exist.xmldb.XmldbURI;
import org.w3c.dom.Node;
import org.xmldb.api.DatabaseManager;
import org.xmldb.api.base.Collection;
import org.xmldb.api.base.CompiledExpression;
import org.xmldb.api.base.Database;
import org.xmldb.api.base.ResourceSet;
import org.xmldb.api.base.XMLDBException;
import org.xmldb.api.modules.XMLResource;
import junit.framework.TestCase;
/**
* RemoveAndReloadTest.java
*
* O2 IT Engineering
* Zurich, Switzerland (CH)
*/
/**
* This test provokes a parameter type error (how?).
*
* @author Tobias Wunden
* @version 1.0
*/
public class NodeTypeTest extends TestCase {
/** eXist database url */
static final String eXistUrl ="xmldb:exist://";
/** eXist home directory */
static final String existHome = "C:\\Documents and Settings\\Tobias Wunden\\My Documents\\Projects\\Varia\\Test";
public static void main(String[] args) {
junit.textui.TestRunner.run(NodeTypeTest.class);
}
/**
* This test passes nodes containing xml entities to eXist and tries
* to read it back in:
* <ul>
* <li>Register a database instance</li>
* <li>Write a "live" document to the database using the XQueryService</li>
* <li>Create a "work" version of it</li>
* </ul>
*/
public final void testRemoveAndReload() {
XQueryService service = setupDatabase();
// write "live" document to the database
try {
store(createDocument(), service, "live.xml");
} catch (Exception e) {
fail("Failed to write document to database: " + e.getMessage());
}
// copy content from work.xml to live.xml using XUpdate
try {
prepareWorkVersion(service);
} catch (Exception e) {
e.printStackTrace();
fail("Failed to update document in database: " + e.getMessage());
}
}
/**
* Stores the given xml fragment into the database.
*
* @param xml the xml document
* @param service the xquery service
* @param document the document name
*/
private final void store(String xml, XQueryService service, String document) {
StringBuffer query = new StringBuffer();
query.append("xquery version \"1.0\";");
query.append("declare namespace xdb=\"http://exist-db.org/xquery/xmldb\";");
query.append("let $isLoggedIn := xdb:login('" + eXistUrl + XmldbURI.ROOT_COLLECTION + "', \"admin\", \"admin\"),");
query.append("$doc := xdb:store(\"" + eXistUrl + XmldbURI.ROOT_COLLECTION + "\", $document, $data)");
query.append("return <result/>");
try {
service.declareVariable("document", document);
service.declareVariable("data", xml);
CompiledExpression cQuery = service.compile(query.toString());
service.execute(cQuery);
} catch (XMLDBException e) {
fail(e.getMessage());
}
}
/**
* Updates the given xml fragment in the database using XUpdate.
*
* @param service the xquery service
*/
private final void prepareWorkVersion(XQueryService service) {
StringBuffer query = new StringBuffer();
query.append("xquery version \"1.0\";\n");
query.append("declare namespace xdb=\"http://exist-db.org/xquery/xmldb\";\n");
query.append("declare namespace f=\"urn:weblounge\";\n");
// Returns a new with a given body and a new header
query.append("declare function f:create($live as node(), $target as xs:string) as node() { \n");
query.append(" <page partition=\"{$live/@partition}\" path=\"{$live/@path}\" version=\"{$target}\"> \n");
query.append(" {$live/*} \n");
query.append(" </page> \n");
query.append("}; \n");
// Function "prepare". Checks if the work version already exists. If this is not the
// case, it calls the "create" function to have a new page created with the live body
// but with a "work" or "$target" header.
query.append("declare function f:prepare($data as node(), $target as xs:string) as xs:string? { \n");
query.append(" if (empty(xmldb:xcollection($collection)/page[@version=$target])) then \n");
query.append(" let $isLoggedIn := xdb:login(concat(\"xmldb:exist://\", $collection), 'admin', 'admin') \n");
query.append(" return xdb:store(concat(\"xmldb:exist://\", $collection), concat($target, \".xml\"), f:create($data, $target)) \n");
query.append(" else \n");
query.append(" () \n");
query.append("}; \n");
// Main clause, tries to create a work from an existing live version
query.append("let $live := xmldb:xcollection($collection)/page[@version=\"live\"],\n");
query.append(" $log := util:log('DEBUG', $live),\n");
query.append(" $w := f:prepare($live, \"work\")\n");
query.append(" return\n");
query.append(" ()\n");
try {
service.declareVariable("collection", XmldbURI.ROOT_COLLECTION);
CompiledExpression cQuery = service.compile(query.toString());
service.execute(cQuery);
} catch (XMLDBException e) {
fail(e.getMessage());
}
}
/**
* Updates the given xml fragment in the database using XUpdate.
*
* @param service the xquery service
*/
@SuppressWarnings("unused")
private final void xupdateRemove(String doc, XQueryService service) {
StringBuffer query = new StringBuffer();
query.append("xquery version \"1.0\";");
query.append("declare namespace xdb=\"http://exist-db.org/xquery/xmldb\";");
query.append("let $isLoggedIn := xdb:login('" + eXistUrl + XmldbURI.ROOT_COLLECTION + "', \"admin\", \"admin\"),");
query.append("$mods := xdb:remove(\"" + eXistUrl + XmldbURI.ROOT_COLLECTION + "\", \"" + doc + "\")");
query.append("return <modifications>{$mods}</modifications>");
try {
CompiledExpression cQuery = service.compile(query.toString());
service.execute(cQuery);
} catch (XMLDBException e) {
fail(e.getMessage());
}
}
/**
* Loads the xml document identified by <code>document</code> from the database.
*
* @param service the xquery service
* @param document the document to load
*/
@SuppressWarnings("unused")
private final Node load(XQueryService service, String document) {
StringBuffer query = new StringBuffer();
query.append("xquery version \"1.0\";");
query.append("let $result := xmldb:document(concat('" + XmldbURI.ROOT_COLLECTION + "', $document))");
query.append("return ($result)");
try {
service.declareVariable("document", document);
CompiledExpression cQuery = service.compile(query.toString());
ResourceSet set = service.execute(cQuery);
if (set != null && set.getSize() > 0) {
return ((XMLResource)set.getIterator().nextResource()).getContentAsDOM();
}
} catch (XMLDBException e) {
fail(e.getMessage());
}
return null;
}
/**
* Registers a new database instance and returns it.
*/
private final Database registerDatabase() {
Class<?> driver = null;
String driverName = "org.exist.xmldb.DatabaseImpl";
try {
driver = Class.forName(driverName);
Database database = (Database)driver.newInstance();
database.setProperty("create-database", "true");
DatabaseManager.registerDatabase(database);
return database;
} catch (Exception e) {
fail(e.getMessage());
}
return null;
}
/**
* Retrieves the base collection and thereof returns a reference to the collection's
* xquery service.
*
* @param db the database
* @return the xquery service
*/
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());
}
return null;
}
private final String createDocument() {
StringBuffer xmlDocument = new StringBuffer();
xmlDocument.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
xmlDocument.append("<page partition=\"home\" path=\"/\" version=\"live\">");
xmlDocument.append(" <header>");
xmlDocument.append(" <renderer>home_dreispaltig</renderer>");
xmlDocument.append(" <layout>default</layout>");
xmlDocument.append(" <type>default</type>");
xmlDocument.append(" <publish>");
xmlDocument.append(" <from>2005/06/06 10:53:40 GMT</from>");
xmlDocument.append(" <to>292278994/08/17 07:12:55 GMT</to>");
xmlDocument.append(" </publish>");
xmlDocument.append(" <security>");
xmlDocument.append(" <owner>www</owner>");
xmlDocument.append(" <permission id=\"system:manage\" type=\"role\">system:editor</permission>");
xmlDocument.append(" <permission id=\"system:read\" type=\"role\">system:guest</permission>");
xmlDocument.append(" <permission id=\"system:translate\" type=\"role\">system:translator</permission>");
xmlDocument.append(" <permission id=\"system:publish\" type=\"role\">system:publisher</permission>");
xmlDocument.append(" <permission id=\"system:write\" type=\"role\">system:editor</permission>");
xmlDocument.append(" </security>");
xmlDocument.append(" <keywords/>");
xmlDocument.append(" <title language=\"de\">Home</title>");
xmlDocument.append(" <title language=\"fr\">Home</title>");
xmlDocument.append(" <title language=\"it\">Home</title>");
xmlDocument.append(" <modified>");
xmlDocument.append(" <date>2005/06/06 10:53:40 GMT</date>");
xmlDocument.append(" <user>markus.jauss</user>");
xmlDocument.append(" </modified>");
xmlDocument.append(" </header>");
xmlDocument.append(" <body/>");
xmlDocument.append("</page>");
return xmlDocument.toString();
}
/**
* Creates the database connection.
*
* @return the xquery service
*/
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());
}
return null;
}
}