/**
* Executes a query.
*
* @param query query to be executed
* @return list of serialized result items
* @throws IOException error during query execution
*/
private StringList execute(final WebDAVQuery query) throws IOException {
final ClassLoader cl = getClass().getClassLoader();
final InputStream s = cl.getResourceAsStream(FILE);
if (s == null) throw new IOException("WebDAV module not found");
final byte[] module = new IOStream(s).read();
final QueryProcessor qp = new QueryProcessor(query.toString(), http.context());
try {
for (final Entry<String, Object> entry : query.entries()) {
qp.bind(entry.getKey(), entry.getValue());
}
qp.ctx.parseLibrary(string(module), FILE, qp.sc);
final Result r = qp.execute();
final int n = (int) r.size();
final StringList items = new StringList(n);
for (int i = 0; i < n; i++) {
final ArrayOutput ao = new ArrayOutput();
r.serialize(Serializer.get(ao), 0);
items.add(ao.toString());
}
return items;
} catch (final QueryException ex) {
throw new BaseXException(ex);
} catch (final Exception ex) {
Util.debug(ex);
throw new BaseXException(ex);
} finally {
qp.close();
}
}
/**
* Checks if the constructed base-uri matches the base-uri of added documents.
*
* @throws Exception exception
*/
@Test
public void baseUri() throws Exception {
final String find = "base-uri(collection('" + NAME + '/' + DIR + "xmark.xml'))";
try (final QueryProcessor qp = new QueryProcessor(find, context)) {
assertEquals(NAME + '/' + FILES[1], qp.execute().toString());
}
}
/**
* Finds documents in path.
*
* @throws Exception exception
*/
@Test
public void findDocs() throws Exception {
final String find = "collection('" + NAME + "/test/zipped') ";
try (final QueryProcessor qp = new QueryProcessor(find, context)) {
assertEquals(4, qp.execute().size());
}
}
/**
* Checks if a query yields the specified error code.
*
* @param query query string
* @param error expected error
*/
protected static void error(final String query, final Err... error) {
final QueryProcessor qp = new QueryProcessor(query, CONTEXT);
try {
final String res = qp.execute().toString().replaceAll("(\\r|\\n) *", "");
fail("Query did not fail:\n" + query + "\n[E] " + error[0] + "...\n[F] " + res);
} catch (final QueryException ex) {
check(ex, error);
} finally {
try {
qp.close();
} catch (final IOException e) {
}
}
}
/**
* Runs the specified query.
*
* @param query query string
* @return result
*/
protected static String query(final String query) {
final QueryProcessor qp = new QueryProcessor(query, CONTEXT);
try {
return qp.execute().toString().replaceAll("(\\r|\\n) *", "");
} catch (final QueryException ex) {
fail("Query failed:\n" + query + "\nMessage: " + ex.getMessage());
return null;
} finally {
try {
qp.close();
} catch (final IOException e) {
}
}
}
/**
* Finds single doc.
*
* @throws Exception exception
*/
@Test
public void findDoc() throws Exception {
final String find =
"for $x in collection('"
+ NAME
+ '/'
+ DIR
+ "xmark.xml') "
+ "where $x//location contains text 'uzbekistan' "
+ "return $x";
try (final QueryProcessor qp = new QueryProcessor(find, context)) {
assertEquals(1, qp.execute().size());
}
}
/**
* Runs the example code.
*
* @param args (ignored) command-line arguments
* @throws QueryException if an error occurs while evaluating the query
*/
public static void main(final String[] args) throws QueryException {
// Database context.
Context context = new Context();
System.out.println("=== BindVariable ===");
// Specify query to be executed
String query =
"declare variable $var1 as xs:string external;\n"
+ "declare variable $var2 external;\n"
+ "($var1, $var2)";
// Show query
System.out.println("\n* Query:");
System.out.println(query);
// Create a query processor
try (QueryProcessor proc = new QueryProcessor(query, context)) {
// Define the items to be bound
String string = "Hello World!\n";
String number = "123";
// Bind the variables
proc.bind("var1", string);
proc.bind("var2", number, "xs:integer");
// Execute the query
Result result = proc.execute();
System.out.println("\n* Result:");
// ------------------------------------------------------------------------
// Print result as string
System.out.println(result);
}
// ------------------------------------------------------------------------
// Close the database context
context.close();
}