public void udtSerDeserTest(int version) throws Exception {
ListType<?> lt = ListType.getInstance(Int32Type.instance, true);
SetType<?> st = SetType.getInstance(UTF8Type.instance, true);
MapType<?, ?> mt = MapType.getInstance(UTF8Type.instance, LongType.instance, true);
UserType udt =
new UserType(
"ks",
bb("myType"),
Arrays.asList(bb("f1"), bb("f2"), bb("f3"), bb("f4")),
Arrays.asList(LongType.instance, lt, st, mt));
Map<ColumnIdentifier, Term.Raw> value = new HashMap<>();
value.put(ci("f1"), lit(42));
value.put(ci("f2"), new Lists.Literal(Arrays.<Term.Raw>asList(lit(3), lit(1))));
value.put(ci("f3"), new Sets.Literal(Arrays.<Term.Raw>asList(lit("foo"), lit("bar"))));
value.put(
ci("f4"),
new Maps.Literal(
Arrays.<Pair<Term.Raw, Term.Raw>>asList(
Pair.<Term.Raw, Term.Raw>create(lit("foo"), lit(24)),
Pair.<Term.Raw, Term.Raw>create(lit("bar"), lit(12)))));
UserTypes.Literal u = new UserTypes.Literal(value);
Term t = u.prepare("ks", columnSpec("myValue", udt));
QueryOptions options = QueryOptions.DEFAULT;
if (version == 2)
options =
QueryOptions.fromProtocolV2(ConsistencyLevel.ONE, Collections.<ByteBuffer>emptyList());
else if (version != 3) throw new AssertionError("Invalid protocol version for test");
ByteBuffer serialized = t.bindAndGet(options);
ByteBuffer[] fields = udt.split(serialized);
assertEquals(4, fields.length);
assertEquals(bytes(42L), fields[0]);
// Note that no matter what the protocol version has been used in bindAndGet above, the
// collections inside
// a UDT should alway be serialized with version 3 of the protocol. Which is why we don't use
// 'version'
// on purpose below.
assertEquals(
Arrays.asList(3, 1), lt.getSerializer().deserializeForNativeProtocol(fields[1], 3));
LinkedHashSet<String> s = new LinkedHashSet<>();
s.addAll(Arrays.asList("bar", "foo"));
assertEquals(s, st.getSerializer().deserializeForNativeProtocol(fields[2], 3));
LinkedHashMap<String, Long> m = new LinkedHashMap<>();
m.put("bar", 12L);
m.put("foo", 24L);
assertEquals(m, mt.getSerializer().deserializeForNativeProtocol(fields[3], 3));
}
public QueryMessage decode(ByteBuf body, int version) {
String query = CBUtil.readLongString(body);
if (version == 1) {
ConsistencyLevel consistency = CBUtil.readConsistencyLevel(body);
return new QueryMessage(
query,
QueryOptions.fromProtocolV1(consistency, Collections.<ByteBuffer>emptyList()));
} else {
return new QueryMessage(query, QueryOptions.codec.decode(body, version));
}
}
public Message.Response execute(QueryState state) {
try {
if (options.getPageSize() == 0) throw new ProtocolException("The page size cannot be 0");
UUID tracingId = null;
if (isTracingRequested()) {
tracingId = UUIDGen.getTimeUUID();
state.prepareTracingSession(tracingId);
}
if (state.traceNextQuery()) {
state.createTracingSession();
ImmutableMap.Builder<String, String> builder = ImmutableMap.builder();
builder.put("query", query);
if (options.getPageSize() > 0)
builder.put("page_size", Integer.toString(options.getPageSize()));
Tracing.instance.begin("Execute CQL3 query", builder.build());
}
Message.Response response =
state.getClientState().getCQLQueryHandler().process(query, state, options);
if (options.skipMetadata() && response instanceof ResultMessage.Rows)
((ResultMessage.Rows) response).result.metadata.setSkipMetadata();
if (tracingId != null) response.setTracingId(tracingId);
return response;
} catch (Exception e) {
if (!((e instanceof RequestValidationException) || (e instanceof RequestExecutionException)))
logger.error("Unexpected error during query", e);
return ErrorMessage.fromException(e);
} finally {
Tracing.instance.stopSession();
}
}