Package com.facebook.presto.block

Examples of com.facebook.presto.block.BlockBuilder

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            }

            @Override
            protected Block computeNext()
            {
                BlockBuilder builder = new BlockBuilder(new TupleInfo(fieldType));

                while (!builder.isFull() && cursor.advanceNextPosition()) {
                    switch (fieldType) {
                        case BOOLEAN:
                            builder.append(cursor.getBoolean(fieldIndex));
                            break;
                        case FIXED_INT_64:
                            builder.append(cursor.getLong(fieldIndex));
                            break;
                        case DOUBLE:
                            builder.append(cursor.getDouble(fieldIndex));
                            break;
                        case VARIABLE_BINARY:
                            builder.append(cursor.getString(fieldIndex));
                            break;
                    }

                    // Split table into multiple pieces. Starts at 1, so
                    // a split of 1 means all the data.
                    for (int i = 1; i < totalParts; i++) {
                        if (!cursor.advanceNextPosition()) {
                            break;
                        }
                    }
                }

                if (builder.isEmpty()) {
                    return endOfData();
                }

                return builder.build();
            }
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        }

        @Override
        public final Block evaluateFinal()
        {
            BlockBuilder out = new BlockBuilder(getFinalTupleInfo());

            out.append(count);

            return out.build();
        }
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        }

        @Override
        public final Block evaluateIntermediate()
        {
            BlockBuilder out = new BlockBuilder(getIntermediateTupleInfo());

            if (digest.getCount() == 0.0) {
                out.appendNull();
            }
            else {
                DynamicSliceOutput sliceOutput = new DynamicSliceOutput(digest.estimatedSerializedSizeInBytes() + SIZE_OF_DOUBLE);
                // write digest
                digest.serialize(sliceOutput);
                // write percentile
                sliceOutput.appendDouble(percentile);

                Slice slice = sliceOutput.slice();
                out.append(slice);
            }

            return out.build();
        }
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        }

        @Override
        public final Block evaluateFinal()
        {
            BlockBuilder out = new BlockBuilder(getFinalTupleInfo());

            evaluate(out, parameterType, digest, percentile);

            return out.build();
        }
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                sizeEstimate += blocks[i].getDataSize().toBytes();
            }

            SliceOutput output = new DynamicSliceOutput(sizeEstimate);
            PagesSerde.writePages(output, new Page(blocks));
            BlockBuilder builder = new BlockBuilder(SINGLE_VARBINARY);
            builder.append(output.slice());
            return builder.build();
        }
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                BlockCursor cursor = accumulators.get(i).evaluateFinal().cursor();
                checkArgument(cursor.advanceNextPosition(), "accumulator returned no results");
                statistics.addValue(getNumeric(cursor));
            }

            BlockBuilder builder = new BlockBuilder(SINGLE_VARBINARY);
            builder.append(formatApproximateOutput(statistics, confidence));
            return builder.build();
        }
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        public void evaluateIntermediate(int groupId, BlockBuilder output)
        {
            Block[] blocks = new Block[accumulators.size()];
            int sizeEstimate = 64 * accumulators.size();
            for (int i = 0; i < accumulators.size(); i++) {
                BlockBuilder builder = new BlockBuilder(accumulators.get(i).getIntermediateTupleInfo());
                accumulators.get(i).evaluateIntermediate(groupId, builder);
                blocks[i] = builder.build();
                sizeEstimate += blocks[i].getDataSize().toBytes();
            }

            SliceOutput sliceOutput = new DynamicSliceOutput(sizeEstimate);
            PagesSerde.writePages(sliceOutput, new Page(blocks));
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        @Override
        public void evaluateFinal(int groupId, BlockBuilder output)
        {
            DescriptiveStatistics statistics = new DescriptiveStatistics();
            for (int i = 0; i < accumulators.size(); i++) {
                BlockBuilder builder = new BlockBuilder(accumulators.get(i).getFinalTupleInfo());
                accumulators.get(i).evaluateFinal(groupId, builder);
                BlockCursor cursor = builder.build().cursor();
                checkArgument(cursor.advanceNextPosition(), "accumulator returned no results");
                statistics.addValue(getNumeric(cursor));
            }

            output.append(formatApproximateOutput(statistics, confidence));
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        }

        @Override
        public final Block evaluateIntermediate()
        {
            BlockBuilder out = new BlockBuilder(getIntermediateTupleInfo());

            if (digest.getCount() == 0.0) {
                out.appendNull();
            }
            else {
                DynamicSliceOutput sliceOutput = new DynamicSliceOutput(digest.estimatedSerializedSizeInBytes() + SIZE_OF_DOUBLE);
                // write digest
                digest.serialize(sliceOutput);
                // write percentile
                sliceOutput.appendDouble(percentile);

                Slice slice = sliceOutput.slice();
                out.append(slice);
            }

            return out.build();
        }
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        }

        @Override
        public final Block evaluateFinal()
        {
            BlockBuilder out = new BlockBuilder(getFinalTupleInfo());
            evaluate(out, parameterType, digest, percentile);
            return out.build();
        }
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Related Classes of com.facebook.presto.block.BlockBuilder

  • com.facebook.presto.block.uncompressed.TestUncompressedBlockCursor
  • com.facebook.presto.block.uncompressed.TestUncompressedBlockCursorWithNulls
  • com.facebook.presto.block.uncompressed.UncompressedBlock
  • com.facebook.presto.metadata.NativeRecordSink
  • com.facebook.presto.operator.aggregation.AbstractTestAggregationFunction
  • com.facebook.presto.operator.aggregation.AbstractTestApproximateAggregationFunction
  • com.facebook.presto.operator.aggregation.AbstractTestApproximateCountDistinct
  • com.facebook.presto.operator.aggregation.AggregationTestUtils
  • com.facebook.presto.operator.aggregation.ApproximateCountAggregation$CountAccumulator
  • com.facebook.presto.operator.aggregation.ApproximatePercentileAggregation$ApproximatePercentileAccumulator
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