Examples with Projection io.crate.execution.dsl.projection.Projection used on opensource projects

Example 1 with Projection

use of io.crate.execution.dsl.projection.Projection in project crate by crate.

the class Get method build.

@Override
public ExecutionPlan build(PlannerContext plannerContext, Set<PlanHint> hints, ProjectionBuilder projectionBuilder, int limitHint, int offsetHint, @Nullable OrderBy order, @Nullable Integer pageSizeHint, Row params, SubQueryResults subQueryResults) {
    HashMap<String, Map<ShardId, List<PKAndVersion>>> idsByShardByNode = new HashMap<>();
    DocTableInfo docTableInfo = tableRelation.tableInfo();
    for (DocKeys.DocKey docKey : docKeys) {
        String id = docKey.getId(plannerContext.transactionContext(), plannerContext.nodeContext(), params, subQueryResults);
        if (id == null) {
            continue;
        }
        List<String> partitionValues = docKey.getPartitionValues(plannerContext.transactionContext(), plannerContext.nodeContext(), params, subQueryResults);
        String indexName = indexName(docTableInfo, partitionValues);
        String routing = docKey.getRouting(plannerContext.transactionContext(), plannerContext.nodeContext(), params, subQueryResults);
        ShardRouting shardRouting;
        try {
            shardRouting = plannerContext.resolveShard(indexName, id, routing);
        } catch (IndexNotFoundException e) {
            if (docTableInfo.isPartitioned()) {
                continue;
            }
            throw e;
        }
        String currentNodeId = shardRouting.currentNodeId();
        if (currentNodeId == null) {
            // If relocating is fast enough this will work, otherwise it will result in a shard failure which
            // will cause a statement retry
            currentNodeId = shardRouting.relocatingNodeId();
            if (currentNodeId == null) {
                throw new ShardNotFoundException(shardRouting.shardId());
            }
        }
        Map<ShardId, List<PKAndVersion>> idsByShard = idsByShardByNode.get(currentNodeId);
        if (idsByShard == null) {
            idsByShard = new HashMap<>();
            idsByShardByNode.put(currentNodeId, idsByShard);
        }
        List<PKAndVersion> pkAndVersions = idsByShard.get(shardRouting.shardId());
        if (pkAndVersions == null) {
            pkAndVersions = new ArrayList<>();
            idsByShard.put(shardRouting.shardId(), pkAndVersions);
        }
        long version = docKey.version(plannerContext.transactionContext(), plannerContext.nodeContext(), params, subQueryResults).orElse(Versions.MATCH_ANY);
        long sequenceNumber = docKey.sequenceNo(plannerContext.transactionContext(), plannerContext.nodeContext(), params, subQueryResults).orElse(SequenceNumbers.UNASSIGNED_SEQ_NO);
        long primaryTerm = docKey.primaryTerm(plannerContext.transactionContext(), plannerContext.nodeContext(), params, subQueryResults).orElse(SequenceNumbers.UNASSIGNED_PRIMARY_TERM);
        pkAndVersions.add(new PKAndVersion(id, version, sequenceNumber, primaryTerm));
    }
    var docKeyColumns = new ArrayList<>(docTableInfo.primaryKey());
    docKeyColumns.addAll(docTableInfo.partitionedBy());
    docKeyColumns.add(docTableInfo.clusteredBy());
    docKeyColumns.add(DocSysColumns.VERSION);
    docKeyColumns.add(DocSysColumns.SEQ_NO);
    docKeyColumns.add(DocSysColumns.PRIMARY_TERM);
    var binder = new SubQueryAndParamBinder(params, subQueryResults);
    List<Symbol> boundOutputs = Lists2.map(outputs, binder);
    var boundQuery = binder.apply(query);
    // Collect all columns which are used inside the query
    // If the query contains only DocKeys, no filter is needed as all DocKeys are handled by the PKLookupOperation
    AtomicBoolean requiresAdditionalFilteringOnNonDocKeyColumns = new AtomicBoolean(false);
    var toCollectSet = new LinkedHashSet<>(boundOutputs);
    Consumer<Reference> addRefIfMatch = ref -> {
        toCollectSet.add(ref);
        if (docKeyColumns.contains(ref.column()) == false) {
            requiresAdditionalFilteringOnNonDocKeyColumns.set(true);
        }
    };
    RefVisitor.visitRefs(boundQuery, addRefIfMatch);
    var toCollect = boundOutputs;
    ArrayList<Projection> projections = new ArrayList<>();
    if (requiresAdditionalFilteringOnNonDocKeyColumns.get()) {
        toCollect = List.copyOf(toCollectSet);
        var filterProjection = ProjectionBuilder.filterProjection(toCollect, boundQuery);
        filterProjection.requiredGranularity(RowGranularity.SHARD);
        projections.add(filterProjection);
        // reduce outputs which have been added for the filter projection
        var evalProjection = new EvalProjection(InputColumn.mapToInputColumns(boundOutputs), RowGranularity.SHARD);
        projections.add(evalProjection);
    }
    var collect = new Collect(new PKLookupPhase(plannerContext.jobId(), plannerContext.nextExecutionPhaseId(), docTableInfo.partitionedBy(), toCollect, idsByShardByNode), TopN.NO_LIMIT, 0, toCollect.size(), docKeys.size(), null);
    for (var projection : projections) {
        collect.addProjection(projection);
    }
    return collect;
}

Example 2 with Projection

use of io.crate.execution.dsl.projection.Projection in project crate by crate.

the class Collect method executesOnShard.

@Override
public boolean executesOnShard() {
    List<Projection> projections = collectPhase.projections();
    if (projections.isEmpty()) {
        return collectPhase instanceof RoutedCollectPhase && ((RoutedCollectPhase) collectPhase).routing().containsShards();
    }
    Projection lastProjection = projections.get(projections.size() - 1);
    return lastProjection.requiredGranularity() == RowGranularity.SHARD;
}

Example 3 with Projection

use of io.crate.execution.dsl.projection.Projection in project crate by crate.

the class WindowAgg method build.

@Override
public ExecutionPlan build(PlannerContext plannerContext, Set<PlanHint> planHints, ProjectionBuilder projectionBuilder, int limit, int offset, @Nullable OrderBy order, @Nullable Integer pageSizeHint, Row params, SubQueryResults subQueryResults) {
    InputColumns.SourceSymbols sourceSymbols = new InputColumns.SourceSymbols(source.outputs());
    SubQueryAndParamBinder binder = new SubQueryAndParamBinder(params, subQueryResults);
    Function<Symbol, Symbol> toInputCols = binder.andThen(s -> InputColumns.create(s, sourceSymbols));
    List<WindowFunction> boundWindowFunctions = (List<WindowFunction>) (List) Lists2.map(windowFunctions, toInputCols);
    List<Projection> projections = new ArrayList<>();
    WindowAggProjection windowAggProjection = new WindowAggProjection(windowDefinition.map(toInputCols), boundWindowFunctions, InputColumns.create(this.standalone, sourceSymbols));
    projections.add(windowAggProjection);
    ExecutionPlan sourcePlan = source.build(plannerContext, planHints, projectionBuilder, TopN.NO_LIMIT, TopN.NO_OFFSET, null, pageSizeHint, params, subQueryResults);
    ResultDescription resultDescription = sourcePlan.resultDescription();
    boolean executesOnHandler = executesOnHandler(plannerContext.handlerNode(), resultDescription.nodeIds());
    boolean nonDistExecution = windowDefinition.partitions().isEmpty() || resultDescription.hasRemainingLimitOrOffset() || executesOnHandler;
    if (nonDistExecution) {
        sourcePlan = Merge.ensureOnHandler(sourcePlan, plannerContext);
        for (Projection projection : projections) {
            sourcePlan.addProjection(projection);
        }
    } else {
        sourcePlan.setDistributionInfo(new DistributionInfo(DistributionType.MODULO, source.outputs().indexOf(windowDefinition.partitions().iterator().next())));
        MergePhase distWindowAgg = new MergePhase(UUIDs.dirtyUUID(), plannerContext.nextExecutionPhaseId(), "distWindowAgg", resultDescription.nodeIds().size(), resultDescription.numOutputs(), resultDescription.nodeIds(), resultDescription.streamOutputs(), projections, DistributionInfo.DEFAULT_BROADCAST, null);
        return new Merge(sourcePlan, distWindowAgg, TopN.NO_LIMIT, TopN.NO_OFFSET, windowAggProjection.outputs().size(), resultDescription.maxRowsPerNode(), null);
    }
    return sourcePlan;
}

Example 4 with Projection

use of io.crate.execution.dsl.projection.Projection in project crate by crate.

the class GroupByOptimizedIterator method getSingleStringKeyGroupProjection.

private static GroupProjection getSingleStringKeyGroupProjection(Collection<? extends Projection> shardProjections) {
    if (shardProjections.size() != 1) {
        return null;
    }
    Projection shardProjection = shardProjections.iterator().next();
    if (!(shardProjection instanceof GroupProjection)) {
        return null;
    }
    GroupProjection groupProjection = (GroupProjection) shardProjection;
    if (groupProjection.keys().size() != 1 || groupProjection.keys().get(0).valueType() != DataTypes.STRING) {
        return null;
    }
    return groupProjection;
}

Example 5 with Projection

use of io.crate.execution.dsl.projection.Projection in project crate by crate.

the class AbstractProjectionsPhase method writeTo.

@Override
public void writeTo(StreamOutput out) throws IOException {
    out.writeString(name);
    assert jobId != null : "jobId must not be null";
    out.writeLong(jobId.getMostSignificantBits());
    out.writeLong(jobId.getLeastSignificantBits());
    out.writeVInt(executionPhaseId);
    int numCols = outputTypes.size();
    out.writeVInt(numCols);
    for (int i = 0; i < numCols; i++) {
        DataTypes.toStream(outputTypes.get(i), out);
    }
    if (hasProjections()) {
        out.writeVInt(projections.size());
        for (Projection p : projections) {
            Projection.toStream(p, out);
        }
    } else {
        out.writeVInt(0);
    }
}