@Test
public void testRecordSetProvider() throws Exception {
for (SchemaTableName schemaTableName : metadata.listTables(SESSION, "jmx")) {
JmxTableHandle tableHandle = metadata.getTableHandle(SESSION, schemaTableName);
List<ColumnHandle> columnHandles =
ImmutableList.copyOf(metadata.getColumnHandles(SESSION, tableHandle).values());
ConnectorTableLayoutHandle layout = new JmxTableLayoutHandle(tableHandle, TupleDomain.all());
ConnectorSplitSource splitSource =
splitManager.getSplits(JmxTransactionHandle.INSTANCE, SESSION, layout);
List<ConnectorSplit> allSplits = getAllSplits(splitSource);
assertEquals(allSplits.size(), nodes.size());
ConnectorSplit split = allSplits.get(0);
RecordSet recordSet =
recordSetProvider.getRecordSet(
JmxTransactionHandle.INSTANCE, SESSION, split, columnHandles);
try (RecordCursor cursor = recordSet.cursor()) {
while (cursor.advanceNextPosition()) {
for (int i = 0; i < recordSet.getColumnTypes().size(); i++) {
cursor.isNull(i);
}
}
}
}
}
@Test
public void testNoPredicate() throws Exception {
ConnectorTableLayoutHandle layout = new JmxTableLayoutHandle(tableHandle, TupleDomain.all());
ConnectorSplitSource splitSource =
splitManager.getSplits(JmxTransactionHandle.INSTANCE, SESSION, layout);
List<ConnectorSplit> allSplits = getAllSplits(splitSource);
assertEquals(allSplits.size(), nodes.size());
Set<String> actualNodes = nodes.stream().map(Node::getNodeIdentifier).collect(toSet());
Set<String> expectedNodes = new HashSet<>();
for (ConnectorSplit split : allSplits) {
List<HostAddress> addresses = split.getAddresses();
assertEquals(addresses.size(), 1);
expectedNodes.add(addresses.get(0).getHostText());
}
assertEquals(actualNodes, expectedNodes);
}
@Test
public void testPredicatePushdown() throws Exception {
for (Node node : nodes) {
String nodeIdentifier = node.getNodeIdentifier();
TupleDomain<ColumnHandle> nodeTupleDomain =
TupleDomain.fromFixedValues(
ImmutableMap.of(columnHandle, NullableValue.of(VARCHAR, utf8Slice(nodeIdentifier))));
ConnectorTableLayoutHandle layout = new JmxTableLayoutHandle(tableHandle, nodeTupleDomain);
ConnectorSplitSource splitSource =
splitManager.getSplits(JmxTransactionHandle.INSTANCE, SESSION, layout);
List<ConnectorSplit> allSplits = getAllSplits(splitSource);
assertEquals(allSplits.size(), 1);
assertEquals(allSplits.get(0).getAddresses().size(), 1);
assertEquals(allSplits.get(0).getAddresses().get(0).getHostText(), nodeIdentifier);
}
}