public void execNonFromQuery(
QueryContext queryContext,
Session session,
String query,
LogicalPlan plan,
SubmitQueryResponse.Builder responseBuilder)
throws Exception {
LogicalRootNode rootNode = plan.getRootBlock().getRoot();
EvalContext evalContext = new EvalContext();
Target[] targets = plan.getRootBlock().getRawTargets();
if (targets == null) {
throw new TajoInternalError("no targets");
}
try {
// start script executor
startScriptExecutors(queryContext, evalContext, targets);
final VTuple outTuple = new VTuple(targets.length);
for (int i = 0; i < targets.length; i++) {
EvalNode eval = targets[i].getEvalTree();
eval.bind(evalContext, null);
outTuple.put(i, eval.eval(null));
}
boolean isInsert =
rootNode.getChild() != null && rootNode.getChild().getType() == NodeType.INSERT;
if (isInsert) {
InsertNode insertNode = rootNode.getChild();
insertRowValues(queryContext, insertNode, responseBuilder);
} else {
Schema schema = PlannerUtil.targetToSchema(targets);
RowStoreUtil.RowStoreEncoder encoder = RowStoreUtil.createEncoder(schema);
byte[] serializedBytes = encoder.toBytes(outTuple);
SerializedResultSet.Builder serializedResBuilder = SerializedResultSet.newBuilder();
serializedResBuilder.addSerializedTuples(ByteString.copyFrom(serializedBytes));
serializedResBuilder.setSchema(schema.getProto());
serializedResBuilder.setBytesNum(serializedBytes.length);
QueryInfo queryInfo =
context
.getQueryJobManager()
.createNewSimpleQuery(
queryContext, session, query, (LogicalRootNode) plan.getRootBlock().getRoot());
responseBuilder.setState(OK);
responseBuilder.setResultType(ResultType.ENCLOSED);
responseBuilder.setQueryId(queryInfo.getQueryId().getProto());
responseBuilder.setResultSet(serializedResBuilder);
responseBuilder.setMaxRowNum(1);
}
} finally {
// stop script executor
stopScriptExecutors(evalContext);
}
}
@Override
public Tuple next() throws IOException {
Tuple aTuple;
Tuple outTuple = new VTuple(outColumnNum);
if (isClosed) {
return null;
}
if (cachedData.size() == 0) {
rescan();
}
if (!scanNode.hasQual()) {
if (currentRow < cachedData.size()) {
aTuple = cachedData.get(currentRow++);
projector.eval(aTuple, outTuple);
outTuple.setOffset(aTuple.getOffset());
return outTuple;
}
return null;
} else {
while (currentRow < cachedData.size()) {
aTuple = cachedData.get(currentRow++);
if (qual.eval(aTuple).isTrue()) {
projector.eval(aTuple, outTuple);
return outTuple;
}
}
return null;
}
}