public void helpTestProcessor(FakeProcessorPlan plan, List[] expectedResults)
throws TeiidException {
BufferManager bufferMgr = BufferManagerFactory.getStandaloneBufferManager();
FakeDataManager dataManager = new FakeDataManager();
CommandContext context =
new CommandContext("pid", "group", null, null, 1); // $NON-NLS-1$ //$NON-NLS-2$
QueryProcessor processor = new QueryProcessor(plan, context, bufferMgr, dataManager);
BatchCollector collector = processor.createBatchCollector();
TupleBuffer tsID = null;
while (true) {
try {
tsID = collector.collectTuples();
break;
} catch (BlockedException e) {
}
}
// Compare # of rows in actual and expected
assertEquals(
"Did not get expected # of rows",
expectedResults.length,
tsID.getRowCount()); // $NON-NLS-1$
// Compare actual with expected results
TupleSource actual = tsID.createIndexedTupleSource();
if (expectedResults.length > 0) {
for (int i = 0; i < expectedResults.length; i++) {
List actRecord = actual.nextTuple();
List expRecord = expectedResults[i];
assertEquals("Did not match row at row index " + i, expRecord, actRecord); // $NON-NLS-1$
}
}
tsID.remove();
}
@Test
public void testLobHandling() throws Exception {
ElementSymbol x = new ElementSymbol("x"); // $NON-NLS-1$
x.setType(DataTypeManager.DefaultDataClasses.CLOB);
List<ElementSymbol> schema = Arrays.asList(x);
TupleBuffer tb =
BufferManagerFactory.getStandaloneBufferManager()
.createTupleBuffer(schema, "x", TupleSourceType.PROCESSOR); // $NON-NLS-1$
tb.setInlineLobs(false);
ClobType c = new ClobType(new SerialClob(new char[0]));
TupleBatch batch = new TupleBatch(1, new List[] {Arrays.asList(c)});
tb.addTupleBatch(batch, false);
assertNotNull(tb.getLobReference(c.getReferenceStreamId()));
}
@Test
public void testForwardOnly() throws Exception {
ElementSymbol x = new ElementSymbol("x"); // $NON-NLS-1$
x.setType(DataTypeManager.DefaultDataClasses.INTEGER);
List<ElementSymbol> schema = Arrays.asList(x);
TupleBuffer tb =
BufferManagerFactory.getStandaloneBufferManager()
.createTupleBuffer(schema, "x", TupleSourceType.PROCESSOR); // $NON-NLS-1$
tb.setForwardOnly(true);
tb.addTuple(Arrays.asList(1));
TupleBatch batch = tb.getBatch(1);
assertTrue(!batch.getTerminationFlag());
assertEquals(1, batch.getBeginRow());
try {
tb.getBatch(1);
fail("expected exception"); // $NON-NLS-1$
} catch (AssertionError e) {
}
tb.addTuple(Arrays.asList(1));
tb.close();
batch = tb.getBatch(2);
assertTrue(batch.getTerminationFlag());
assertEquals(2, batch.getBeginRow());
}
/**
* @throws TeiidComponentException
* @see
* org.teiid.query.sql.util.ValueIteratorSource#getValueIterator(org.teiid.query.sql.symbol.Expression)
*/
public TupleSourceValueIterator getValueIterator(Expression valueExpression)
throws TeiidComponentException {
IndexedTupleSource its = buffer.createIndexedTupleSource();
int index = 0;
if (valueExpression != null) {
if (valueExpression instanceof Array) {
final Array array = (Array) valueExpression;
List<Expression> exprs = array.getExpressions();
final int[] indexes = new int[exprs.size()];
for (int i = 0; i < exprs.size(); i++) {
indexes[i] = getIndex(exprs.get(i));
}
return new TupleSourceValueIterator(its, index) {
@Override
public Object next() throws TeiidComponentException {
List<?> tuple = super.nextTuple();
Object[] a =
(Object[])
java.lang.reflect.Array.newInstance(array.getComponentType(), indexes.length);
for (int i = 0; i < indexes.length; i++) {
a[i] = tuple.get(indexes[i]);
if (a[i] == null) {
return null; // TODO: this is a hack
}
}
return new ArrayImpl(a);
}
};
}
index = getIndex(valueExpression);
}
return new TupleSourceValueIterator(its, index);
}
public Set<Object> getCachedSet(Expression valueExpression)
throws TeiidComponentException, TeiidProcessingException {
Set<Object> result = null;
if (cachedSets != null) {
result = cachedSets.get(valueExpression);
}
if (result == null) {
if (buffer.getRowCount() > buffer.getBatchSize()) {
return null;
}
TupleSourceValueIterator ve = getValueIterator(valueExpression);
int index = 0;
Class<?> type = null;
if (valueExpression instanceof Array) {
type = ((Array) valueExpression).getComponentType();
} else {
if (valueExpression != null) {
index = schema.indexOf(valueExpression);
Assertion.assertTrue(index != -1);
}
type = ((Expression) schema.get(index)).getType();
}
if (!DataTypeManager.isHashable(type)) {
result = new TreeSet<Object>(Constant.COMPARATOR);
} else {
result = new HashSet<Object>();
}
while (ve.hasNext()) {
Object value = ve.next();
if (value != null) {
result.add(value);
}
}
ve.close();
if (cachedSets == null) {
cachedSets = new HashMap<Expression, Set<Object>>();
}
cachedSets.put(valueExpression, result);
}
return result;
}
public DependentValueSource(TupleBuffer tb) {
this(tb, tb.getSchema());
}
/**
* Get batch from child node Walk through each row of child batch Bind values to insertCommand
* Execute insertCommand Update insertCount When no more data is available, output batch with
* single row containing insertCount
*/
public TupleBatch nextBatchDirect()
throws BlockedException, TeiidComponentException, TeiidProcessingException {
while (phase == REQUEST_CREATION) {
checkExitConditions();
/* If we don't have a batch to work, get the next
*/
if (currentBatch == null) {
if (sourceDone) {
phase = RESPONSE_PROCESSING;
break;
}
currentBatch = getChildren()[0].nextBatch(); // can throw BlockedException
sourceDone = currentBatch.getTerminationFlag();
this.batchRow = currentBatch.getBeginRow();
// normally we would want to skip a 0 sized batch, but it typically represents the terminal
// batch
// and for implicit temp tables we need to issue an empty insert
if (currentBatch.getRowCount() == 0
&& (!currentBatch.getTerminationFlag() || mode != Mode.ITERATOR)) {
currentBatch = null;
continue;
}
}
int batchSize = currentBatch.getRowCount();
int requests = 1;
switch (mode) {
case ITERATOR:
if (buffer == null) {
buffer =
getBufferManager()
.createTupleBuffer(intoElements, getConnectionID(), TupleSourceType.PROCESSOR);
}
buffer.addTupleBatch(currentBatch, true);
if (currentBatch.getTerminationFlag()
&& (buffer.getRowCount() != 0 || intoGroup.isImplicitTempGroupSymbol())) {
Insert insert = new Insert(intoGroup, intoElements, null);
buffer.close();
insert.setTupleSource(buffer.createIndexedTupleSource(true));
// Register insert command against source
registerRequest(insert);
} else {
requests = 0;
}
break;
case BATCH:
// Register batched update command against source
int endRow = currentBatch.getEndRow();
List<Command> rows = new ArrayList<Command>(endRow - batchRow);
for (int rowNum = batchRow; rowNum <= endRow; rowNum++) {
Insert insert =
new Insert(
intoGroup,
intoElements,
convertValuesToConstants(currentBatch.getTuple(rowNum), intoElements));
rows.add(insert);
}
registerRequest(new BatchedUpdateCommand(rows));
break;
case SINGLE:
batchSize = 1;
// Register insert command against source
// Defect 16036 - submit a new INSERT command to the DataManager.
registerRequest(
new Insert(
intoGroup,
intoElements,
convertValuesToConstants(currentBatch.getTuple(batchRow), intoElements)));
}
this.batchRow += batchSize;
if (batchRow > currentBatch.getEndRow()) {
currentBatch = null;
}
this.requestsRegistered += requests;
}
checkExitConditions();
// End this node's work
addBatchRow(Arrays.asList(insertCount));
terminateBatches();
return pullBatch();
}
@Test
public void testTruncate() throws Exception {
ElementSymbol x = new ElementSymbol("x"); // $NON-NLS-1$
x.setType(DataTypeManager.DefaultDataClasses.INTEGER);
List<ElementSymbol> schema = Arrays.asList(x);
TupleBuffer tb =
BufferManagerFactory.getStandaloneBufferManager()
.createTupleBuffer(schema, "x", TupleSourceType.PROCESSOR); // $NON-NLS-1$
tb.setBatchSize(2);
for (int i = 0; i < 5; i++) {
tb.addTuple(Arrays.asList(1));
}
TupleBatch batch = tb.getBatch(1);
assertTrue(!batch.getTerminationFlag());
assertEquals(2, batch.getEndRow());
tb.close();
assertEquals(5, tb.getManagedRowCount());
tb.truncateTo(3);
assertEquals(3, tb.getManagedRowCount());
assertEquals(3, tb.getRowCount());
batch = tb.getBatch(3);
assertTrue(batch.getTerminationFlag());
tb.truncateTo(2);
assertEquals(2, tb.getManagedRowCount());
assertEquals(2, tb.getRowCount());
batch = tb.getBatch(2);
assertTrue(batch.getTerminationFlag());
}
private TupleSource handleCachedProcedure(final CommandContext context, StoredProcedure proc)
throws TeiidComponentException, QueryMetadataException, TeiidProcessingException {
String fullName = context.getMetadata().getFullName(proc.getProcedureID());
LogManager.logDetail(
LogConstants.CTX_DQP, "processing cached procedure request for", fullName); // $NON-NLS-1$
LinkedList<Object> vals = new LinkedList<Object>();
for (SPParameter param : proc.getInputParameters()) {
vals.add(((Constant) param.getExpression()).getValue());
}
// collapse the hash to single byte for the key to restrict the possible results to 256
int hash = vals.hashCode();
hash |= (hash >>> 16);
hash |= (hash >>> 8);
hash &= 0x000000ff;
final CacheID cid =
new CacheID(
new ParseInfo(),
fullName + hash,
context.getVdbName(),
context.getVdbVersion(),
context.getConnectionId(),
context.getUserName());
cid.setParameters(vals);
CachedResults results = cache.get(cid);
if (results != null) {
TupleBuffer buffer = results.getResults();
return buffer.createIndexedTupleSource();
}
// construct a query with a no cache hint
final CacheHint hint = proc.getCacheHint();
proc.setCacheHint(null);
Option option = new Option();
option.setNoCache(true);
option.addNoCacheGroup(fullName);
proc.setOption(option);
StoredProcedure cloneProc = (StoredProcedure) proc.clone();
int i = 0;
for (SPParameter param : cloneProc.getInputParameters()) {
param.setExpression(new Reference(i++));
}
final QueryProcessor qp =
context
.getQueryProcessorFactory()
.createQueryProcessor(
cloneProc.toString(), fullName.toUpperCase(), context, vals.toArray());
final BatchCollector bc = qp.createBatchCollector();
return new ProxyTupleSource() {
boolean success = false;
@Override
protected TupleSource createTupleSource()
throws TeiidComponentException, TeiidProcessingException {
TupleBuffer tb = bc.collectTuples();
CachedResults cr = new CachedResults();
cr.setResults(tb, qp.getProcessorPlan());
Determinism determinismLevel = qp.getContext().getDeterminismLevel();
if (hint != null && hint.getDeterminism() != null) {
LogManager.logTrace(
LogConstants.CTX_DQP,
new Object[] {
"Cache hint modified the query determinism from ",
determinismLevel,
" to ",
hint.getDeterminism()
}); //$NON-NLS-1$ //$NON-NLS-2$
determinismLevel = hint.getDeterminism();
}
cache.put(cid, determinismLevel, cr, hint != null ? hint.getTtl() : null);
context.setDeterminismLevel(determinismLevel);
success = true;
return tb.createIndexedTupleSource();
}
@Override
public void closeSource() {
super.closeSource();
qp.closeProcessing();
if (!success && bc.getTupleBuffer() != null) {
bc.getTupleBuffer().remove();
}
}
};
}