Examples with RelDataType org.apache.calcite.rel.type.RelDataType used on opensource projects

Example 46 with RelDataType

use of org.apache.calcite.rel.type.RelDataType in project drill by apache.

the class RewriteAsBinaryOperators method visitCall.

@Override
public RexNode visitCall(RexCall call) {
    SqlOperator op = call.getOperator();
    SqlKind kind = op.getKind();
    RelDataType type = call.getType();
    if (kind == SqlKind.OR || kind == SqlKind.AND) {
        if (call.getOperands().size() > 2) {
            List<RexNode> children = new ArrayList<>(call.getOperands());
            RexNode left = children.remove(0).accept(this);
            RexNode right = builder.makeCall(type, op, children).accept(this);
            return builder.makeCall(type, op, ImmutableList.of(left, right));
        }
    }
    return builder.makeCall(type, op, visitChildren(call));
}

Example 47 with RelDataType

use of org.apache.calcite.rel.type.RelDataType in project drill by apache.

the class InfoSchemaRecordGenerator method visitTables.

/**
   * Visit the tables in the given schema. The
   * @param  schemaPath  the path to the given schema
   * @param  schema  the given schema
   */
public void visitTables(String schemaPath, SchemaPlus schema) {
    final AbstractSchema drillSchema = schema.unwrap(AbstractSchema.class);
    final List<String> tableNames = Lists.newArrayList(schema.getTableNames());
    for (Pair<String, ? extends Table> tableNameToTable : drillSchema.getTablesByNames(tableNames)) {
        final String tableName = tableNameToTable.getKey();
        final Table table = tableNameToTable.getValue();
        final TableType tableType = table.getJdbcTableType();
        // Visit the table, and if requested ...
        if (shouldVisitTable(schemaPath, tableName, tableType) && visitTable(schemaPath, tableName, table)) {
            // ... do for each of the table's fields.
            final RelDataType tableRow = table.getRowType(new JavaTypeFactoryImpl());
            for (RelDataTypeField field : tableRow.getFieldList()) {
                if (shouldVisitColumn(schemaPath, tableName, field.getName())) {
                    visitField(schemaPath, tableName, field);
                }
            }
        }
    }
}

Example 48 with RelDataType

use of org.apache.calcite.rel.type.RelDataType in project flink by apache.

the class FlinkAggregateExpandDistinctAggregatesRule method rewriteUsingGroupingSets.

/*
	public RelBuilder convertSingletonDistinct(RelBuilder relBuilder,
											   Aggregate aggregate, Set<Pair<List<Integer>, Integer>> argLists) {
		// For example,
		//	SELECT deptno, COUNT(*), SUM(bonus), MIN(DISTINCT sal)
		//	FROM emp
		//	GROUP BY deptno
		//
		// becomes
		//
		//	SELECT deptno, SUM(cnt), SUM(bonus), MIN(sal)
		//	FROM (
		//		  SELECT deptno, COUNT(*) as cnt, SUM(bonus), sal
		//		  FROM EMP
		//		  GROUP BY deptno, sal)			// Aggregate B
		//	GROUP BY deptno						// Aggregate A
		relBuilder.push(aggregate.getInput());
		final List<Pair<RexNode, String>> projects = new ArrayList<>();
		final Map<Integer, Integer> sourceOf = new HashMap<>();
		SortedSet<Integer> newGroupSet = new TreeSet<>();
		final List<RelDataTypeField> childFields =
				relBuilder.peek().getRowType().getFieldList();
		final boolean hasGroupBy = aggregate.getGroupSet().size() > 0;

		// Add the distinct aggregate column(s) to the group-by columns,
		// if not already a part of the group-by
		newGroupSet.addAll(aggregate.getGroupSet().asList());
		for (Pair<List<Integer>, Integer> argList : argLists) {
			newGroupSet.addAll(argList.getKey());
		}

		// Re-map the arguments to the aggregate A. These arguments will get
		// remapped because of the intermediate aggregate B generated as part of the
		// transformation.
		for (int arg : newGroupSet) {
			sourceOf.put(arg, projects.size());
			projects.add(RexInputRef.of2(arg, childFields));
		}
		// Generate the intermediate aggregate B
		final List<AggregateCall> aggCalls = aggregate.getAggCallList();
		final List<AggregateCall> newAggCalls = new ArrayList<>();
		final List<Integer> fakeArgs = new ArrayList<>();
		final Map<AggregateCall, Integer> callArgMap = new HashMap<>();
		// First identify the real arguments, then use the rest for fake arguments
		// e.g. if real arguments are 0, 1, 3. Then the fake arguments will be 2, 4
		for (final AggregateCall aggCall : aggCalls) {
			if (!aggCall.isDistinct()) {
				for (int arg : aggCall.getArgList()) {
					if (!sourceOf.containsKey(arg)) {
						sourceOf.put(arg, projects.size());
					}
				}
			}
		}
		int fakeArg0 = 0;
		for (final AggregateCall aggCall : aggCalls) {
			// We will deal with non-distinct aggregates below
			if (!aggCall.isDistinct()) {
				boolean isGroupKeyUsedInAgg = false;
				for (int arg : aggCall.getArgList()) {
					if (sourceOf.containsKey(arg)) {
						isGroupKeyUsedInAgg = true;
						break;
					}
				}
				if (aggCall.getArgList().size() == 0 || isGroupKeyUsedInAgg) {
					while (sourceOf.get(fakeArg0) != null) {
						++fakeArg0;
					}
					fakeArgs.add(fakeArg0);
				}
			}
		}
		for (final AggregateCall aggCall : aggCalls) {
			if (!aggCall.isDistinct()) {
				for (int arg : aggCall.getArgList()) {
					if (!sourceOf.containsKey(arg)) {
						sourceOf.remove(arg);
					}
				}
			}
		}
		// Compute the remapped arguments using fake arguments for non-distinct
		// aggregates with no arguments e.g. count(*).
		int fakeArgIdx = 0;
		for (final AggregateCall aggCall : aggCalls) {
			// Project the column corresponding to the distinct aggregate. Project
			// as-is all the non-distinct aggregates
			if (!aggCall.isDistinct()) {
				final AggregateCall newCall =
						AggregateCall.create(aggCall.getAggregation(), false,
								aggCall.getArgList(), -1,
								ImmutableBitSet.of(newGroupSet).cardinality(),
								relBuilder.peek(), null, aggCall.name);
				newAggCalls.add(newCall);
				if (newCall.getArgList().size() == 0) {
					int fakeArg = fakeArgs.get(fakeArgIdx);
					callArgMap.put(newCall, fakeArg);
					sourceOf.put(fakeArg, projects.size());
					projects.add(
							Pair.of((RexNode) new RexInputRef(fakeArg, newCall.getType()),
									newCall.getName()));
					++fakeArgIdx;
				} else {
					for (int arg : newCall.getArgList()) {
						if (sourceOf.containsKey(arg)) {
							int fakeArg = fakeArgs.get(fakeArgIdx);
							callArgMap.put(newCall, fakeArg);
							sourceOf.put(fakeArg, projects.size());
							projects.add(
									Pair.of((RexNode) new RexInputRef(fakeArg, newCall.getType()),
											newCall.getName()));
							++fakeArgIdx;
						} else {
							sourceOf.put(arg, projects.size());
							projects.add(
									Pair.of((RexNode) new RexInputRef(arg, newCall.getType()),
											newCall.getName()));
						}
					}
				}
			}
		}
		// Generate the aggregate B (see the reference example above)
		relBuilder.push(
				aggregate.copy(
						aggregate.getTraitSet(), relBuilder.build(),
						false, ImmutableBitSet.of(newGroupSet), null, newAggCalls));
		// Convert the existing aggregate to aggregate A (see the reference example above)
		final List<AggregateCall> newTopAggCalls =
				Lists.newArrayList(aggregate.getAggCallList());
		// Use the remapped arguments for the (non)distinct aggregate calls
		for (int i = 0; i < newTopAggCalls.size(); i++) {
			// Re-map arguments.
			final AggregateCall aggCall = newTopAggCalls.get(i);
			final int argCount = aggCall.getArgList().size();
			final List<Integer> newArgs = new ArrayList<>(argCount);
			final AggregateCall newCall;


			for (int j = 0; j < argCount; j++) {
				final Integer arg = aggCall.getArgList().get(j);
				if (callArgMap.containsKey(aggCall)) {
					newArgs.add(sourceOf.get(callArgMap.get(aggCall)));
				}
				else {
					newArgs.add(sourceOf.get(arg));
				}
			}
			if (aggCall.isDistinct()) {
				newCall =
						AggregateCall.create(aggCall.getAggregation(), false, newArgs,
								-1, aggregate.getGroupSet().cardinality(), relBuilder.peek(),
								aggCall.getType(), aggCall.name);
			} else {
				// If aggregate B had a COUNT aggregate call the corresponding aggregate at
				// aggregate A must be SUM. For other aggregates, it remains the same.
				if (aggCall.getAggregation() instanceof SqlCountAggFunction) {
					if (aggCall.getArgList().size() == 0) {
						newArgs.add(sourceOf.get(callArgMap.get(aggCall)));
					}
					if (hasGroupBy) {
						SqlSumAggFunction sumAgg = new SqlSumAggFunction(null);
						newCall =
								AggregateCall.create(sumAgg, false, newArgs, -1,
										aggregate.getGroupSet().cardinality(), relBuilder.peek(),
										aggCall.getType(), aggCall.getName());
					} else {
						SqlSumEmptyIsZeroAggFunction sumAgg = new SqlSumEmptyIsZeroAggFunction();
						newCall =
								AggregateCall.create(sumAgg, false, newArgs, -1,
										aggregate.getGroupSet().cardinality(), relBuilder.peek(),
										aggCall.getType(), aggCall.getName());
					}
				} else {
					newCall =
							AggregateCall.create(aggCall.getAggregation(), false, newArgs, -1,
									aggregate.getGroupSet().cardinality(),
									relBuilder.peek(), aggCall.getType(), aggCall.name);
				}
			}
			newTopAggCalls.set(i, newCall);
		}
		// Populate the group-by keys with the remapped arguments for aggregate A
		newGroupSet.clear();
		for (int arg : aggregate.getGroupSet()) {
			newGroupSet.add(sourceOf.get(arg));
		}
		relBuilder.push(
				aggregate.copy(aggregate.getTraitSet(),
						relBuilder.build(), aggregate.indicator,
						ImmutableBitSet.of(newGroupSet), null, newTopAggCalls));
		return relBuilder;
	}
	*/
@SuppressWarnings("DanglingJavadoc")
private void rewriteUsingGroupingSets(RelOptRuleCall call, Aggregate aggregate, Set<Pair<List<Integer>, Integer>> argLists) {
    final Set<ImmutableBitSet> groupSetTreeSet = new TreeSet<>(ImmutableBitSet.ORDERING);
    groupSetTreeSet.add(aggregate.getGroupSet());
    for (Pair<List<Integer>, Integer> argList : argLists) {
        groupSetTreeSet.add(ImmutableBitSet.of(argList.left).setIf(argList.right, argList.right >= 0).union(aggregate.getGroupSet()));
    }
    final ImmutableList<ImmutableBitSet> groupSets = ImmutableList.copyOf(groupSetTreeSet);
    final ImmutableBitSet fullGroupSet = ImmutableBitSet.union(groupSets);
    final List<AggregateCall> distinctAggCalls = new ArrayList<>();
    for (Pair<AggregateCall, String> aggCall : aggregate.getNamedAggCalls()) {
        if (!aggCall.left.isDistinct()) {
            distinctAggCalls.add(aggCall.left.rename(aggCall.right));
        }
    }
    final RelBuilder relBuilder = call.builder();
    relBuilder.push(aggregate.getInput());
    relBuilder.aggregate(relBuilder.groupKey(fullGroupSet, groupSets.size() > 1, groupSets), distinctAggCalls);
    final RelNode distinct = relBuilder.peek();
    final int groupCount = fullGroupSet.cardinality();
    final int indicatorCount = groupSets.size() > 1 ? groupCount : 0;
    final RelOptCluster cluster = aggregate.getCluster();
    final RexBuilder rexBuilder = cluster.getRexBuilder();
    final RelDataTypeFactory typeFactory = cluster.getTypeFactory();
    final RelDataType booleanType = typeFactory.createTypeWithNullability(typeFactory.createSqlType(SqlTypeName.BOOLEAN), false);
    final List<Pair<RexNode, String>> predicates = new ArrayList<>();
    final Map<ImmutableBitSet, Integer> filters = new HashMap<>();
    /** Function to register a filter for a group set. */
    class Registrar {

        RexNode group = null;

        private int register(ImmutableBitSet groupSet) {
            if (group == null) {
                group = makeGroup(groupCount - 1);
            }
            final RexNode node = rexBuilder.makeCall(SqlStdOperatorTable.EQUALS, group, rexBuilder.makeExactLiteral(toNumber(remap(fullGroupSet, groupSet))));
            predicates.add(Pair.of(node, toString(groupSet)));
            return groupCount + indicatorCount + distinctAggCalls.size() + predicates.size() - 1;
        }

        private RexNode makeGroup(int i) {
            final RexInputRef ref = rexBuilder.makeInputRef(booleanType, groupCount + i);
            final RexNode kase = rexBuilder.makeCall(SqlStdOperatorTable.CASE, ref, rexBuilder.makeExactLiteral(BigDecimal.ZERO), rexBuilder.makeExactLiteral(TWO.pow(i)));
            if (i == 0) {
                return kase;
            } else {
                return rexBuilder.makeCall(SqlStdOperatorTable.PLUS, makeGroup(i - 1), kase);
            }
        }

        private BigDecimal toNumber(ImmutableBitSet bitSet) {
            BigDecimal n = BigDecimal.ZERO;
            for (int key : bitSet) {
                n = n.add(TWO.pow(key));
            }
            return n;
        }

        private String toString(ImmutableBitSet bitSet) {
            final StringBuilder buf = new StringBuilder("$i");
            for (int key : bitSet) {
                buf.append(key).append('_');
            }
            return buf.substring(0, buf.length() - 1);
        }
    }
    final Registrar registrar = new Registrar();
    for (ImmutableBitSet groupSet : groupSets) {
        filters.put(groupSet, registrar.register(groupSet));
    }
    if (!predicates.isEmpty()) {
        List<Pair<RexNode, String>> nodes = new ArrayList<>();
        for (RelDataTypeField f : relBuilder.peek().getRowType().getFieldList()) {
            final RexNode node = rexBuilder.makeInputRef(f.getType(), f.getIndex());
            nodes.add(Pair.of(node, f.getName()));
        }
        nodes.addAll(predicates);
        relBuilder.project(Pair.left(nodes), Pair.right(nodes));
    }
    int x = groupCount + indicatorCount;
    final List<AggregateCall> newCalls = new ArrayList<>();
    for (AggregateCall aggCall : aggregate.getAggCallList()) {
        final int newFilterArg;
        final List<Integer> newArgList;
        final SqlAggFunction aggregation;
        if (!aggCall.isDistinct()) {
            aggregation = SqlStdOperatorTable.MIN;
            newArgList = ImmutableIntList.of(x++);
            newFilterArg = filters.get(aggregate.getGroupSet());
        } else {
            aggregation = aggCall.getAggregation();
            newArgList = remap(fullGroupSet, aggCall.getArgList());
            newFilterArg = filters.get(ImmutableBitSet.of(aggCall.getArgList()).setIf(aggCall.filterArg, aggCall.filterArg >= 0).union(aggregate.getGroupSet()));
        }
        final AggregateCall newCall = AggregateCall.create(aggregation, false, newArgList, newFilterArg, aggregate.getGroupCount(), distinct, null, aggCall.name);
        newCalls.add(newCall);
    }
    relBuilder.aggregate(relBuilder.groupKey(remap(fullGroupSet, aggregate.getGroupSet()), aggregate.indicator, remap(fullGroupSet, aggregate.getGroupSets())), newCalls);
    relBuilder.convert(aggregate.getRowType(), true);
    call.transformTo(relBuilder.build());
}

Example 49 with RelDataType

use of org.apache.calcite.rel.type.RelDataType in project storm by apache.

the class TridentProjectRel method tridentPlan.

@Override
public void tridentPlan(TridentPlanCreator planCreator) throws Exception {
    // SingleRel
    RelNode input = getInput();
    StormRelUtils.getStormRelInput(input).tridentPlan(planCreator);
    Stream inputStream = planCreator.pop().toStream();
    String stageName = StormRelUtils.getStageName(this);
    String projectionClassName = StormRelUtils.getClassName(this);
    List<String> outputFieldNames = getRowType().getFieldNames();
    int outputCount = outputFieldNames.size();
    List<RexNode> childExps = getChildExps();
    RelDataType inputRowType = getInput(0).getRowType();
    ExecutableExpression projectionInstance = planCreator.createScalarInstance(childExps, inputRowType, projectionClassName);
    Stream finalStream = inputStream.map(new EvaluationFunction(projectionInstance, outputCount, planCreator.getDataContext()), new Fields(outputFieldNames)).name(stageName);
    planCreator.addStream(finalStream);
}

Example 50 with RelDataType

use of org.apache.calcite.rel.type.RelDataType in project hive by apache.

the class HiveRelDecorrelator method getNewForOldInputRef.

private RexInputRef getNewForOldInputRef(RexInputRef oldInputRef) {
    assert currentRel != null;
    int oldOrdinal = oldInputRef.getIndex();
    int newOrdinal = 0;
    // determine which input rel oldOrdinal references, and adjust
    // oldOrdinal to be relative to that input rel
    RelNode oldInput = null;
    for (RelNode oldInput0 : currentRel.getInputs()) {
        RelDataType oldInputType = oldInput0.getRowType();
        int n = oldInputType.getFieldCount();
        if (oldOrdinal < n) {
            oldInput = oldInput0;
            break;
        }
        RelNode newInput = map.get(oldInput0).r;
        newOrdinal += newInput.getRowType().getFieldCount();
        oldOrdinal -= n;
    }
    assert oldInput != null;
    final Frame frame = map.get(oldInput);
    assert frame != null;
    // now oldOrdinal is relative to oldInput
    int oldLocalOrdinal = oldOrdinal;
    // figure out the newLocalOrdinal, relative to the newInput.
    int newLocalOrdinal = oldLocalOrdinal;
    if (!frame.oldToNewOutputs.isEmpty()) {
        newLocalOrdinal = frame.oldToNewOutputs.get(oldLocalOrdinal);
    }
    newOrdinal += newLocalOrdinal;
    return new RexInputRef(newOrdinal, frame.r.getRowType().getFieldList().get(newLocalOrdinal).getType());
}