private LogicalNode createCartesianProduct(PlanContext context, LogicalNode left, LogicalNode right) throws TajoException { LogicalPlan plan = context.plan; QueryBlock block = context.queryBlock; Schema merged = SchemaUtil.merge(left.getOutSchema(), right.getOutSchema()); JoinNode join = plan.createNode(JoinNode.class); join.init(JoinType.CROSS, left, right); join.setInSchema(merged); block.addJoinType(join.getJoinType()); EvalNode evalNode; List<String> newlyEvaluatedExprs = new ArrayList<>(); for (Iterator<NamedExpr> it = block.namedExprsMgr.getIteratorForUnevaluatedExprs(); it.hasNext();) { NamedExpr namedExpr = it.next(); try { evalNode = exprAnnotator.createEvalNode(context, namedExpr.getExpr(), NameResolvingMode.LEGACY); if (EvalTreeUtil.findDistinctAggFunction(evalNode).size() == 0 && EvalTreeUtil.findWindowFunction(evalNode).size() == 0) { block.namedExprsMgr.markAsEvaluated(namedExpr.getAlias(), evalNode); newlyEvaluatedExprs.add(namedExpr.getAlias()); } } catch (UndefinedColumnException ve) {} } List<Target> targets = new ArrayList<>(PlannerUtil.schemaToTargets(merged)); for (String newAddedExpr : newlyEvaluatedExprs) { targets.add(block.namedExprsMgr.getTarget(newAddedExpr, true)); } join.setTargets(targets); return join; }
private LogicalNode createCartesianProduct(PlanContext context, LogicalNode left, LogicalNode right) throws TajoException { LogicalPlan plan = context.plan; QueryBlock block = context.queryBlock; Schema merged = SchemaUtil.merge(left.getOutSchema(), right.getOutSchema()); JoinNode join = plan.createNode(JoinNode.class); join.init(JoinType.CROSS, left, right); join.setInSchema(merged); block.addJoinType(join.getJoinType()); EvalNode evalNode; List<String> newlyEvaluatedExprs = TUtil.newList(); for (Iterator<NamedExpr> it = block.namedExprsMgr.getIteratorForUnevaluatedExprs(); it.hasNext();) { NamedExpr namedExpr = it.next(); try { evalNode = exprAnnotator.createEvalNode(context, namedExpr.getExpr(), NameResolvingMode.LEGACY); if (EvalTreeUtil.findDistinctAggFunction(evalNode).size() == 0 && EvalTreeUtil.findWindowFunction(evalNode).size() == 0) { block.namedExprsMgr.markAsEvaluated(namedExpr.getAlias(), evalNode); newlyEvaluatedExprs.add(namedExpr.getAlias()); } } catch (UndefinedColumnException ve) {} } List<Target> targets = TUtil.newList(PlannerUtil.schemaToTargets(merged)); for (String newAddedExpr : newlyEvaluatedExprs) { targets.add(block.namedExprsMgr.getTarget(newAddedExpr, true)); } join.setTargets(targets.toArray(new Target[targets.size()])); return join; }
joinNode.setTargets(targets); block.addJoinType(joinType); block.registerNode(joinNode); plan.addHistory("IN subquery is rewritten into " + (eachIn.isNot() ? "anti" : "semi") + " join.");
joinNode.setTargets(targets.toArray(new Target[targets.size()])); block.addJoinType(joinType); block.registerNode(joinNode); plan.addHistory("IN subquery is rewritten into " + (eachIn.isNot() ? "anti" : "semi") + " join.");
@Override public LogicalNode visitJoin(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, Join expr) throws TajoException { stack.push(expr); LogicalNode left = visit(ctx, stack, expr.getLeft()); LogicalNode right = visit(ctx, stack, expr.getRight()); stack.pop(); JoinNode joinNode = ctx.getPlan().createNode(JoinNode.class); joinNode.setJoinType(expr.getJoinType()); Schema merged = SchemaUtil.merge(left.getOutSchema(), right.getOutSchema()); joinNode.setInSchema(merged); joinNode.setOutSchema(merged); ctx.getQueryBlock().addJoinType(expr.getJoinType()); return joinNode; }
@Override public LogicalNode visitJoin(LogicalPlanner.PlanContext ctx, Stack<Expr> stack, Join expr) throws TajoException { stack.push(expr); LogicalNode left = visit(ctx, stack, expr.getLeft()); LogicalNode right = visit(ctx, stack, expr.getRight()); stack.pop(); JoinNode joinNode = ctx.getPlan().createNode(JoinNode.class); joinNode.setJoinType(expr.getJoinType()); Schema merged = SchemaUtil.merge(left.getOutSchema(), right.getOutSchema()); joinNode.setInSchema(merged); joinNode.setOutSchema(merged); ctx.getQueryBlock().addJoinType(expr.getJoinType()); return joinNode; }