Examples of com.facebook.presto.sql.tree.Input

com.facebook.presto.sql.tree.Input
Represents a reference to a field in a physical execution plan
TODO: This class belongs to the execution engine and should not be in this package.


        int channel = 0;
        for (Symbol symbol : symbols) {
            ProjectionFunction function = ProjectionFunctions.singleColumn(types.get(symbol).getRawType(), getFirst(inputLayout.get(symbol)));
            projections.add(function);
            outputMappings.put(symbol, new Input(channel, 0)); // one field per channel
            channel++;
        }


        return new IdentityProjectionInfo(outputMappings.build(), projections);
    }

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        List<ProjectionFunction> packedProjections = new ArrayList<>();
        int channel = mappings.getProjections().size();
        int field = 0;
        for (Symbol symbol : symbols) {
            packedProjections.add(ProjectionFunctions.singleColumn(types.get(symbol).getRawType(), getFirst(source.getLayout().get(symbol))));
            outputMappings.put(symbol, new Input(channel, field));
            field++;
        }
        projections.add(ProjectionFunctions.concat(packedProjections));


        OperatorFactory operatorFactory = new FilterAndProjectOperatorFactory(context.getNextOperatorId(), FilterFunctions.TRUE_FUNCTION, projections.build());

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            // Fow now, we assume that remote plans always produce one symbol per channel. TODO: remove this assumption
            ImmutableMultimap.Builder<Symbol, Input> outputMappings = ImmutableMultimap.builder();
            int channel = 0;
            for (Symbol symbol : node.getOutputSymbols()) {
                outputMappings.put(symbol, new Input(channel, 0)); // one symbol per channel
                channel++;
            }


            return new PhysicalOperation(operatorFactory, outputMappings.build());
        }

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            }


            // window functions go in remaining channels starting after the last channel from the source operator, one per channel
            int channel = source.getTupleInfos().size();
            for (Symbol symbol : windowFunctionOutputSymbols) {
                outputMappings.put(symbol, new Input(channel, 0));
                channel++;
            }


            OperatorFactory operatorFactory = new InMemoryWindowOperatorFactory(
                    context.getNextOperatorId(),

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                columns = new ArrayList<>();
                int channel = 0;
                for (Symbol symbol : tableScanNode.getOutputSymbols()) {
                    columns.add(tableScanNode.getAssignments().get(symbol));


                    Input input = new Input(channel, 0);
                    sourceLayout.put(symbol, input);


                    Type type = checkNotNull(context.getTypes().get(symbol), "No type for symbol %s", symbol);
                    sourceTypes.put(input, type);


                    channel++;
                }
            }
            else {
                // plan source
                source = sourceNode.accept(this, context);
                sourceLayout = convertLayoutToInputMap(source.getLayout());
                sourceTypes = getInputTypes(source.getLayout(), source.getTupleInfos());
            }


            // build output mapping
            ImmutableMultimap.Builder<Symbol, Input> outputMappingsBuilder = ImmutableMultimap.builder();
            for (int i = 0; i < outputSymbols.size(); i++) {
                Symbol symbol = outputSymbols.get(i);
                outputMappingsBuilder.put(symbol, new Input(i, 0)); // one field per channel
            }
            Multimap<Symbol, Input> outputMappings = outputMappingsBuilder.build();


            try {
                // compiler uses inputs instead of symbols, so rewrite the expressions first

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            int channel = 0;
            for (Symbol symbol : node.getOutputSymbols()) {
                columns.add(node.getAssignments().get(symbol));


                outputMappings.put(symbol, new Input(channel, 0)); // one column per channel
                channel++;
            }


            List<TupleInfo> tupleInfos = getSourceOperatorTupleInfos(node, context.getTypes());
            OperatorFactory operatorFactory = new TableScanOperatorFactory(context.getNextOperatorId(), node.getId(), dataStreamProvider, tupleInfos, columns);

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            // inputs from build side of the join are laid out following the input from the probe side,
            // so adjust the channel ids but keep the field layouts intact
            int offset = probeSource.getTupleInfos().size();
            for (Map.Entry<Symbol, Input> entry : buildSource.getLayout().entries()) {
                Input input = entry.getValue();
                outputMappings.put(entry.getKey(), new Input(offset + input.getChannel(), input.getField()));
            }


            OperatorFactory operator = createJoinOperator(node.getType(), hashSupplier, probeSource.getTupleInfos(), probeChannel, context);
            return new PhysicalOperation(operator, outputMappings.build(), probeSource);
        }

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            context.addDriverFactory(buildDriverFactory);


            // Source channels are always laid out first, followed by the boolean output symbol
            ImmutableMultimap<Symbol, Input> outputMappings = ImmutableMultimap.<Symbol, Input>builder()
                    .putAll(probeSource.getLayout())
                    .put(node.getSemiJoinOutput(), new Input(probeSource.getLayout().size(), 0))
                    .build();


            HashSemiJoinOperatorFactory operator = new HashSemiJoinOperatorFactory(context.getNextOperatorId(), setProvider, probeSource.getTupleInfos(), probeChannel);
            return new PhysicalOperation(operator, outputMappings, probeSource);
        }

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            // create the table writer
            RecordSink recordSink = recordSinkManager.getRecordSink(node.getTarget());
            OperatorFactory operatorFactory = new TableWriterOperatorFactory(context.getNextOperatorId(), recordSink);


            Multimap<Symbol, Input> layout = ImmutableMultimap.<Symbol, Input>builder()
                    .put(node.getOutputSymbols().get(0), new Input(0, 0))
                    .put(node.getOutputSymbols().get(1), new Input(1, 0))
                    .build();


            return new PhysicalOperation(operatorFactory, layout, source);
        }

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            // assume that subplans always produce one symbol per channel
            List<Symbol> layout = node.getOutputSymbols();
            ImmutableMultimap.Builder<Symbol, Input> outputMappings = ImmutableMultimap.builder();
            for (int i = 0; i < layout.size(); i++) {
                outputMappings.put(layout.get(i), new Input(i, 0));
            }


            // add exchange source as first operator in the current context
            OperatorFactory factory = new InMemoryExchangeSourceOperatorFactory(context.getNextOperatorId(), exchange);
            return new PhysicalOperation(factory, outputMappings.build());

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