Examples with MycatView io.mycat.calcite.logical.MycatView used on opensource projects

Example 21 with MycatView

use of io.mycat.calcite.logical.MycatView in project Mycat2 by MyCATApache.

the class MycatSingleViewRule method onMatch.

@Override
public void onMatch(RelOptRuleCall call) {
    SQLRBORewriter.on(call.rel(1), call.rel(0)).ifPresent(c -> {
        if (c instanceof MycatView) {
            RelNode relNode = ((MycatView) c).getRelNode();
            ToLocalConverter toLocalConverter = new ToLocalConverter();
            RelNode accept = relNode.accept(toLocalConverter);
            LocalToMycatRelConverter localToMycatRelConverter = new LocalToMycatRelConverter(c.getCluster(), c.getTraitSet().replace(MycatConvention.INSTANCE), accept);
        }
    });
}

Example 22 with MycatView

use of io.mycat.calcite.logical.MycatView in project Mycat2 by MyCATApache.

the class MycatTableLookupSemiJoinRule method onMatch.

@Override
public void onMatch(RelOptRuleCall call) {
    Join join = call.rel(0);
    RelOptCluster cluster = join.getCluster();
    RelNode left = call.rel(1);
    RelNode right = call.rel(2);
    RelMetadataQuery metadataQuery = cluster.getMetadataQuery();
    RelHint lastJoinHint = HintTools.getLastJoinHint(join.getHints());
    // if (lastJoinHint == null){
    // return;
    // }
    boolean hint = false;
    if (lastJoinHint != null && "use_bka_join".equalsIgnoreCase(lastJoinHint.hintName)) {
        hint = true;
    } else {
        double leftRowCount = Optional.ofNullable(metadataQuery.getRowCount(left)).orElse(0.0);
        if (leftRowCount > BKA_JOIN_LEFT_ROW_COUNT_LIMIT) {
            return;
        }
    }
    if (!join.analyzeCondition().isEqui()) {
        return;
    }
    if (!(right instanceof MycatView)) {
        return;
    }
    MycatView mycatView = (MycatView) right;
    if (mycatView.banPushdown()) {
        return;
    }
    if (!hint) {
        if (!isGisView(mycatView))
            return;
    }
    JoinRelType joinType = join.getJoinType();
    switch(joinType) {
        case LEFT:
        case INNER:
        case SEMI:
            break;
        default:
            return;
    }
    if (RelOptUtil.countJoins(mycatView.getRelNode()) > 1) {
        return;
    }
    RelBuilder relBuilder = MycatCalciteSupport.relBuilderFactory.create(cluster, null);
    // 
    // ImmutableList.Builder<RelDataTypeField> listBuilder = ImmutableList.builder();
    // Map<Integer, Integer> sourcePosToTargetPos = new HashMap<>();
    // extractedTrimJoinLeftKeys(join, listBuilder, sourcePosToTargetPos);
    // RelRecordType argTypeListRecordType = new RelRecordType(listBuilder.build());
    // Mapping mapping = Mappings.bijection(sourcePosToTargetPos);
    // RexNode equiCondition = RexUtil.apply(mapping, RelOptUtil.createEquiJoinCondition(right, join.analyzeCondition().rightKeys, left, join.analyzeCondition().leftKeys,
    // MycatCalciteSupport.RexBuilder));
    RexBuilder rexBuilder = MycatCalciteSupport.RexBuilder;
    RelDataTypeFactory typeFactory = cluster.getTypeFactory();
    relBuilder.push(right);
    List<RexNode> rightExprs = new ArrayList<>();
    {
        for (Integer rightKey : join.analyzeCondition().rightSet()) {
            rightExprs.add(relBuilder.field(rightKey));
        }
    }
    List<RexNode> leftExprs = new ArrayList<>();
    List<CorrelationId> correlationIds = new ArrayList<>();
    {
        for (Integer leftKey : join.analyzeCondition().leftSet()) {
            CorrelationId correl = cluster.createCorrel();
            correlationIds.add(correl);
            RelDataType type = left.getRowType().getFieldList().get(leftKey).getType();
            RexNode rexNode = rexBuilder.makeCorrel(typeFactory.createUnknownType(), correl);
            leftExprs.add(rexBuilder.makeCast(type, rexNode));
        }
    }
    RexNode condition = relBuilder.call(MYCAT_SQL_LOOKUP_IN, rexBuilder.makeCall(SqlStdOperatorTable.ROW, rightExprs), rexBuilder.makeCall(SqlStdOperatorTable.ROW, leftExprs));
    Distribution.Type type = mycatView.getDistribution().type();
    switch(type) {
        case PHY:
        case BROADCAST:
            {
                RelNode relNode = mycatView.getRelNode();
                relBuilder.push(relNode);
                relBuilder.filter(condition);
                relBuilder.rename(mycatView.getRowType().getFieldNames());
                MycatView view = mycatView.changeTo(relBuilder.build());
                call.transformTo(new MycatSQLTableLookup(cluster, join.getTraitSet(), left, view, joinType, join.getCondition(), correlationIds, MycatSQLTableLookup.Type.BACK));
                return;
            }
        case SHARDING:
            {
                RelNode innerRelNode = mycatView.getRelNode();
                boolean bottomFilter = innerRelNode instanceof TableScan;
                relBuilder.push(mycatView.getRelNode());
                relBuilder.filter(condition);
                RelNode innerDataNode = relBuilder.rename(mycatView.getRowType().getFieldNames()).build();
                Optional<RexNode> viewConditionOptional = mycatView.getCondition();
                RexNode finalCondition = null;
                if (!viewConditionOptional.isPresent() && bottomFilter) {
                    finalCondition = condition;
                } else if (bottomFilter) {
                    finalCondition = viewConditionOptional.map(i -> RexUtil.composeConjunction(MycatCalciteSupport.RexBuilder, ImmutableList.of(i, condition))).orElse(condition);
                }
                MycatView resView = MycatView.ofCondition(innerDataNode, mycatView.getDistribution(), finalCondition);
                call.transformTo(new MycatSQLTableLookup(cluster, join.getTraitSet(), left, resView, joinType, join.getCondition(), correlationIds, MycatSQLTableLookup.Type.BACK));
                break;
            }
        default:
    }
}

Example 23 with MycatView

use of io.mycat.calcite.logical.MycatView in project Mycat2 by MyCATApache.

the class SQLRBORewriter method splitAggregate.

private static Optional<RelNode> splitAggregate(MycatView viewNode, Aggregate aggregate) {
    try {
        AggregatePushContext aggregateContext = AggregatePushContext.split(aggregate);
        MycatView newView = viewNode.changeTo(LogicalAggregate.create(viewNode.getRelNode(), aggregate.getHints(), aggregate.getGroupSet(), aggregate.getGroupSets(), aggregateContext.getPartialAggregateCallList()));
        LogicalAggregate globalAggregateRelNode = LogicalAggregate.create(newView, aggregate.getHints(), aggregate.getGroupSet(), aggregate.getGroupSets(), aggregateContext.getGlobalAggregateCallList());
        MycatProject projectRelNode = MycatProject.create(globalAggregateRelNode, aggregateContext.getProjectExprList(), aggregate.getRowType());
        return RexUtil.isIdentity(projectRelNode.getProjects(), projectRelNode.getInput().getRowType()) ? Optional.of(globalAggregateRelNode) : Optional.of(projectRelNode);
    } catch (Throwable throwable) {
        LOGGER.debug("", throwable);
    }
    return Optional.empty();
}

Example 24 with MycatView

use of io.mycat.calcite.logical.MycatView in project Mycat2 by MyCATApache.

the class MycatTableLookupCombineRule method onMatch.

@Override
public void onMatch(RelOptRuleCall call) {
    Join join = call.rel(0);
    RelOptCluster cluster = join.getCluster();
    MycatSQLTableLookup left = call.rel(1);
    if (left.getType() != MycatSQLTableLookup.Type.NONE) {
        return;
    }
    RelNode right = call.rel(2);
    JoinInfo joinInfo = join.analyzeCondition();
    if (!(right instanceof MycatView)) {
        return;
    }
    MycatView inneRightMycatView = (MycatView) left.getRight();
    MycatView outerRightmycatView = (MycatView) right;
    if (outerRightmycatView.banPushdown()) {
        return;
    }
    JoinRelType joinType = join.getJoinType();
    switch(joinType) {
        case INNER:
        case SEMI:
            break;
        default:
            return;
    }
    if (RelOptUtil.countJoins(outerRightmycatView.getRelNode()) > 1) {
        return;
    }
    switch(outerRightmycatView.getDistribution().type()) {
        case PHY:
        case BROADCAST:
            {
                RelBuilder builder = call.builder();
                inneRightMycatView.getDistribution().join(outerRightmycatView.getDistribution()).ifPresent(c -> {
                    RelBuilder relBuilder = builder.push(inneRightMycatView.getRelNode()).push(outerRightmycatView.getRelNode()).join(joinType, join.getCondition());
                    RelNode relNode = relBuilder.build();
                    MycatView view = MycatView.ofCondition(relNode, c, null);
                    call.transformTo(left.changeTo(left.getInput(0), view));
                });
                break;
            }
        case SHARDING:
            {
                SQLRBORewriter.bottomJoin(inneRightMycatView, outerRightmycatView, join).ifPresent(relNode1 -> {
                    call.transformTo(left.changeTo(left.getInput(0), (MycatView) relNode1));
                });
                break;
            }
        default:
    }
}

Example 25 with MycatView

use of io.mycat.calcite.logical.MycatView in project Mycat2 by MyCATApache.

the class MycatProjectJoinClusteringRule method onMatch.

@Override
public void onMatch(RelOptRuleCall call) {
    final LogicalProject origProject = call.rel(0);
    final LogicalJoin origJoin = call.rel(1);
    final RelNode left = call.rel(2);
    final RelNode right = call.rel(3);
    Optional<RelNode> joinOptional = SQLRBORewriter.bottomJoin(left, right, origJoin);
    if (joinOptional.isPresent()) {
        RelNode relNode = joinOptional.get();
        Project newProject = (Project) origProject.copy(origProject.getTraitSet(), ImmutableList.of(relNode));
        if (relNode instanceof MycatView) {
            call.transformTo(newProject.accept(new SQLRBORewriter()));
            return;
        }
        call.transformTo(newProject);
    }
}