/**
* Runs a query, omitting more().
*
* @throws IOException I/O exception
*/
@Test
public void queryNoMore() throws IOException {
final Query query = session.query("1 to 2");
assertEqual("1", query.next());
assertEqual("2", query.next());
assertNull(query.next());
query.close();
}
/**
* Queries empty content.
*
* @throws IOException I/O exception
*/
@Test
public void queryEmptyString() throws IOException {
final Query q = session.query("'',1");
assertTrue(q.more());
assertEqual("", q.next());
assertTrue(q.more());
assertEqual("1", q.next());
assertNull(q.next());
}
/**
* Queries empty content.
*
* @throws IOException I/O exception
*/
@Test
public void queryEmptyBinary() throws IOException {
session.execute("create db " + NAME);
session.store("X", new ArrayInput(""));
assertEqual("", session.execute("xquery " + RAW + _DB_RETRIEVE.args(NAME, "X")));
assertEqual("", session.query(RAW + _DB_RETRIEVE.args(NAME, "X")).execute());
final Query q = session.query(RAW + _DB_RETRIEVE.args(NAME, "X"));
assertTrue(q.more());
assertEqual("", q.next());
assertNull(q.next());
}
/**
* Runs a query with an external variable declaration.
*
* @throws IOException I/O exception
*/
@Test
public void queryBind() throws IOException {
final Query query = session.query("declare variable $a external; $a");
query.bind("$a", "4");
assertEqual("4", query.execute());
query.bind("$a", "5");
assertEqual("5", query.next());
query.bind("$a", "6");
assertEqual("6", query.next());
query.close();
}
/**
* Runs a query with an external variable declaration.
*
* @throws IOException I/O exception
*/
@Test
public void queryBindInt() throws IOException {
Query query = session.query("declare variable $a as xs:integer external; $a");
query.bind("a", "5", "xs:integer");
assertEqual("5", query.next());
query.close();
query = session.query("declare variable $a external; $a");
query.bind("a", Int.get(1), "xs:integer");
assertEqual("1", query.next());
query.close();
}
/**
* Runs a query with an external variable declaration.
*
* @throws IOException I/O exception
*/
@Test
public void queryBindURI() throws IOException {
final Query query = session.query("declare variable $a external; $a");
query.bind("$a", "X", "xs:anyURI");
assertEqual("X", query.next());
query.close();
}
/**
* Runs a query with a bound context value.
*
* @throws IOException I/O exception
*/
@Test
public void queryContextVar() throws IOException {
final Query query = session.query("declare variable $a := .; $a");
query.context("<a/>", "element()");
assertEqual("<a/>", query.next());
query.close();
}
/**
* Runs a query with a bound context value.
*
* @throws IOException I/O exception
*/
@Test
public void queryContext() throws IOException {
final Query query = session.query(".");
query.context("5");
assertEqual("5", query.next());
query.close();
}
/**
* Runs a query with a bound context value.
*
* @throws IOException I/O exception
*/
@Test
public void queryContextInt() throws IOException {
final Query query = session.query(". * 2");
query.context("6", "xs:integer");
assertEqual("12", query.next());
query.close();
}
/**
* Runs a query with an external variable declaration.
*
* @throws IOException I/O exception
*/
@Test
public void queryBindEmptySequence() throws IOException {
final Query query = session.query("declare variable $a external; $a");
query.bind("a", "()", "empty-sequence()");
assertNull(query.next());
query.close();
}
/**
* Runs a query and retrieves multiple results as string.
*
* @throws IOException I/O exception
*/
@Test
public void queryMore() throws IOException {
final Query query = session.query("1 to 3");
int c = 0;
while (query.more()) assertEqual(++c, query.next());
query.close();
}
/**
* Runs a query with additional serialization parameters.
*
* @throws IOException I/O exception
*/
@Test
public void querySerial1() throws IOException {
session.execute("set serializer wrap-prefix=db,wrap-uri=ns");
final Query query = session.query(WRAPPER + "()");
assertTrue("Result expected.", query.more());
assertEqual("<db:results xmlns:db=\"ns\"/>", query.next());
assertFalse("No result expected.", query.more());
}
/**
* Runs a query with additional serialization parameters.
*
* @throws IOException I/O exception
*/
@Test
public void querySerial2() throws IOException {
final Query query = session.query(WRAPPER + "1 to 2");
assertTrue("Result expected.", query.more());
assertEqual(
"<db:results xmlns:db=\"ns\"> <db:result>1</db:result>"
+ " <db:result>2</db:result></db:results>",
query.next());
}
/**
* Runs a query with an external variable declaration.
*
* @throws IOException I/O exception
*/
@Test
public void queryBindSequence() throws IOException {
Query query = session.query("declare variable $a external; $a");
query.bind("a", "1\u00012", "xs:integer");
assertEqual("1", query.next());
assertEqual("2", query.next());
query.close();
query = session.query("declare variable $a external; $a");
query.bind("a", "09\u0002xs:hexBinary\u00012", "xs:integer");
assertEqual("09", query.next());
assertEqual("2", query.next());
query.close();
query = session.query("declare variable $a external; $a");
query.bind("a", Seq.get(new Item[] {Int.get(1), Str.get("X")}, 2));
assertEqual("1", query.next());
assertEqual("X", query.next());
query.close();
query = session.query("declare variable $a external; $a");
query.bind("a", IntSeq.get(new long[] {1, 2}, AtomType.INT));
assertEqual("1", query.next());
assertEqual("2", query.next());
query.close();
query = session.query("declare variable $a external; $a");
query.bind("a", IntSeq.get(new long[] {1, 2}, AtomType.INT), "xs:integer");
assertEqual("1", query.next());
assertEqual("2", query.next());
query.close();
}
/**
* Queries binary content (works only if output stream is specified).
*
* @throws IOException I/O exception
*/
@Test
public void queryBinary() throws IOException {
if (out == null) return;
session.execute("create db " + NAME);
final byte[] tmp = {0, 1, 2, 127, 0, -1, -2, -128};
session.store("X", new ArrayInput(tmp));
final String retr = _DB_RETRIEVE.args(NAME, "X");
// check command
session.execute("xquery " + RAW + retr + ',' + retr);
assertTrue(eq(out.toArray(), concat(tmp, tmp)));
out.reset();
// check query execution
session.query(RAW + retr + ',' + retr).execute();
assertTrue(eq(out.toArray(), concat(tmp, tmp)));
out.reset();
// check iterator
final Query q = session.query(RAW + retr + ',' + retr);
q.next();
assertTrue(eq(out.toArray(), tmp));
out.reset();
q.next();
assertTrue(eq(out.toArray(), tmp));
assertNull(q.next());
}
/**
* Runs two queries in parallel.
*
* @throws IOException I/O exception
*/
@Test
public void queryParallel() throws IOException {
final Query query1 = session.query("1 to 2");
final Query query2 = session.query("reverse(3 to 4)");
assertEqual("1", query1.next());
assertEqual("4", query2.next());
assertEqual("2", query1.next());
assertEqual("3", query2.next());
assertNull(query1.next());
assertNull(query2.next());
query1.close();
query2.close();
}
/**
* Runs an erroneous query.
*
* @throws IOException expected exception
*/
@Test(expected = BaseXException.class)
public void queryError3() throws IOException {
final Query query = session.query("(1,'a')[. eq 1]");
assertEqual("1", query.next());
query.next();
}
/**
* Runs a query and retrieves XML entities as string.
*
* @throws IOException I/O exception
*/
@Test
public void queryEntities() throws IOException {
final Query query = session.query("'&<>'"'");
assertEqual("&<>'\"", query.next());
}
/**
* Runs a query and retrieves the result as string.
*
* @throws IOException I/O exception
*/
@Test
public void query2() throws IOException {
final Query query = session.query("1");
if (!query.more()) fail("No result returned");
assertEqual("1", query.next());
}