/**
* 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();
}
