@Override
public TempTable process(TempTable tempTable)
throws TeiidComponentException, TeiidProcessingException {
if (initial) {
// process initial plan
if (working == null) {
working = tempTable.clone();
intermediate = tempTable.clone();
}
processPlan(tempTable, working);
initial = false;
}
// continue to build the result
while (working.getRowCount() > 0) {
if (building) {
return working;
}
building = true;
try {
if (workingQp == null) {
recursive.reset();
workingQp =
new QueryProcessor(
recursive,
this.queryProcessor.getContext(),
this.queryProcessor.getBufferManager(),
this.queryProcessor.getProcessorDataManager());
this.iterator = new BatchProducerTupleSource(workingQp);
}
processPlan(tempTable, intermediate);
iterations++;
if (maxIterations > 0 && iterations > maxIterations) {
throw new TeiidProcessingException(
QueryPlugin.Event.TEIID31158,
QueryPlugin.Util.gs(
QueryPlugin.Event.TEIID31158,
maxIterations,
tempTable.getMetadataId().getName()));
}
this.workingQp.closeProcessing();
this.workingQp = null;
// swap the intermediate to be the working
working.truncate(true);
TempTable temp = working;
working = intermediate;
intermediate = temp;
} finally {
building = false;
}
}
// we truncate rater than remove because we are cloned off of the original
this.working.truncate(true);
this.intermediate.truncate(true);
tempTable.setUpdatable(false);
return tempTable;
}