@Override
public LogicalNode visitScan(
CompilationContext context,
LogicalPlan plan,
LogicalPlan.QueryBlock block,
ScanNode node,
Stack<LogicalNode> stack)
throws TajoException {
compileProjectableNode(context, node.getInSchema(), node);
compileSelectableNode(context, node.getInSchema(), node);
return node;
}
public SystemPhysicalExec(TaskAttemptContext context, ScanNode scanNode) {
super(context, scanNode.getInSchema(), scanNode.getOutSchema());
this.scanNode = scanNode;
if (this.scanNode.hasQual()) {
this.qual = this.scanNode.getQual();
this.qual.bind(null, inSchema);
}
cachedData = TUtil.newList();
currentRow = 0;
isClosed = false;
projector = new Projector(context, inSchema, outSchema, scanNode.getTargets());
}