Examples with AndDimFilter org.apache.druid.query.filter.AndDimFilter used on opensource projects

Example 21 with AndDimFilter

use of org.apache.druid.query.filter.AndDimFilter in project druid by druid-io.

the class CombineAndSimplifyBounds method doSimplify.

/**
 * Simplify BoundDimFilters that are children of an OR or an AND.
 *
 * @param children    the filters
 * @param disjunction true for OR, false for AND
 *
 * @return simplified filters
 */
private static DimFilter doSimplify(final List<DimFilter> children, boolean disjunction) {
    // Copy the list of child filters. We'll modify the copy and eventually return it.
    final List<DimFilter> newChildren = Lists.newArrayList(children);
    // Group Bound filters by dimension, extractionFn, and comparator and compute a RangeSet for each one.
    final Map<BoundRefKey, List<BoundDimFilter>> bounds = new HashMap<>();
    // all and/or filters have at least 1 child
    boolean allFalse = true;
    for (final DimFilter child : newChildren) {
        if (child instanceof BoundDimFilter) {
            final BoundDimFilter bound = (BoundDimFilter) child;
            final BoundRefKey boundRefKey = BoundRefKey.from(bound);
            final List<BoundDimFilter> filterList = bounds.computeIfAbsent(boundRefKey, k -> new ArrayList<>());
            filterList.add(bound);
            allFalse = false;
        } else {
            allFalse &= child instanceof FalseDimFilter;
        }
    }
    // short circuit if can never be true
    if (allFalse) {
        return Filtration.matchNothing();
    }
    // Try to simplify filters within each group.
    for (Map.Entry<BoundRefKey, List<BoundDimFilter>> entry : bounds.entrySet()) {
        final BoundRefKey boundRefKey = entry.getKey();
        final List<BoundDimFilter> filterList = entry.getValue();
        // Create a RangeSet for this group.
        final RangeSet<BoundValue> rangeSet = disjunction ? RangeSets.unionRanges(Bounds.toRanges(filterList)) : RangeSets.intersectRanges(Bounds.toRanges(filterList));
        if (rangeSet.asRanges().size() < filterList.size()) {
            // We found a simplification. Remove the old filters and add new ones.
            for (final BoundDimFilter bound : filterList) {
                if (!newChildren.remove(bound)) {
                    // Don't expect this to happen, but include it as a sanity check.
                    throw new ISE("Tried to remove bound, but couldn't");
                }
            }
            if (rangeSet.asRanges().isEmpty()) {
                // range set matches nothing, equivalent to FALSE
                newChildren.add(Filtration.matchNothing());
            }
            for (final Range<BoundValue> range : rangeSet.asRanges()) {
                if (!range.hasLowerBound() && !range.hasUpperBound()) {
                    // range matches all, equivalent to TRUE
                    newChildren.add(Filtration.matchEverything());
                } else {
                    newChildren.add(Bounds.toFilter(boundRefKey, range));
                }
            }
        }
    }
    // Finally: Go through newChildren, removing or potentially exiting early based on TRUE / FALSE marker filters.
    Preconditions.checkState(newChildren.size() > 0, "newChildren.size > 0");
    final Iterator<DimFilter> iterator = newChildren.iterator();
    while (iterator.hasNext()) {
        final DimFilter newChild = iterator.next();
        if (Filtration.matchNothing().equals(newChild)) {
            // AND with FALSE => always false, short circuit
            if (disjunction) {
                iterator.remove();
            } else {
                return Filtration.matchNothing();
            }
        } else if (Filtration.matchEverything().equals(newChild)) {
            // AND with TRUE => ignore
            if (disjunction) {
                return Filtration.matchEverything();
            } else {
                iterator.remove();
            }
        }
    }
    if (newChildren.isEmpty()) {
        // If "newChildren" is empty at this point, it must have consisted entirely of TRUE / FALSE marker filters.
        if (disjunction) {
            // Must have been all FALSE filters (the only kind we would have removed above).
            return Filtration.matchNothing();
        } else {
            // Must have been all TRUE filters (the only kind we would have removed above).
            return Filtration.matchEverything();
        }
    } else if (newChildren.size() == 1) {
        return newChildren.get(0);
    } else {
        return disjunction ? new OrDimFilter(newChildren) : new AndDimFilter(newChildren);
    }
}

Example 22 with AndDimFilter

use of org.apache.druid.query.filter.AndDimFilter in project druid by druid-io.

the class BottomUpTransform method apply0.

private DimFilter apply0(final DimFilter filter) {
    if (filter instanceof AndDimFilter) {
        final List<DimFilter> oldFilters = ((AndDimFilter) filter).getFields();
        final List<DimFilter> newFilters = new ArrayList<>();
        for (DimFilter oldFilter : oldFilters) {
            final DimFilter newFilter = apply0(oldFilter);
            if (newFilter != null) {
                newFilters.add(newFilter);
            }
        }
        if (!newFilters.equals(oldFilters)) {
            return checkedProcess(new AndDimFilter(newFilters));
        } else {
            return checkedProcess(filter);
        }
    } else if (filter instanceof OrDimFilter) {
        final List<DimFilter> oldFilters = ((OrDimFilter) filter).getFields();
        final List<DimFilter> newFilters = new ArrayList<>();
        for (DimFilter oldFilter : oldFilters) {
            final DimFilter newFilter = apply0(oldFilter);
            if (newFilter != null) {
                newFilters.add(newFilter);
            }
        }
        if (!newFilters.equals(oldFilters)) {
            return checkedProcess(new OrDimFilter(newFilters));
        } else {
            return checkedProcess(filter);
        }
    } else if (filter instanceof NotDimFilter) {
        final DimFilter oldFilter = ((NotDimFilter) filter).getField();
        final DimFilter newFilter = apply0(oldFilter);
        if (!oldFilter.equals(newFilter)) {
            return checkedProcess(new NotDimFilter(newFilter));
        } else {
            return checkedProcess(filter);
        }
    } else {
        return checkedProcess(filter);
    }
}

Example 23 with AndDimFilter

use of org.apache.druid.query.filter.AndDimFilter in project druid by druid-io.

the class ArrayContainsOperatorConversion method toDruidFilter.

@Nullable
@Override
public DimFilter toDruidFilter(final PlannerContext plannerContext, RowSignature rowSignature, @Nullable VirtualColumnRegistry virtualColumnRegistry, final RexNode rexNode) {
    final List<RexNode> operands = ((RexCall) rexNode).getOperands();
    final List<DruidExpression> druidExpressions = Expressions.toDruidExpressions(plannerContext, rowSignature, operands);
    if (druidExpressions == null) {
        return null;
    }
    // Converts array_contains() function into an AND of Selector filters if possible.
    final DruidExpression leftExpr = druidExpressions.get(0);
    final DruidExpression rightExpr = druidExpressions.get(1);
    if (leftExpr.isSimpleExtraction()) {
        Expr expr = Parser.parse(rightExpr.getExpression(), plannerContext.getExprMacroTable());
        // different package.
        if (expr.isLiteral()) {
            // Evaluate the expression to get out the array elements.
            // We can safely pass a noop ObjectBinding if the expression is literal.
            ExprEval<?> exprEval = expr.eval(InputBindings.nilBindings());
            String[] arrayElements = exprEval.asStringArray();
            if (arrayElements == null || arrayElements.length == 0) {
                // to create an empty array with no argument, we just return null.
                return null;
            } else if (arrayElements.length == 1) {
                return newSelectorDimFilter(leftExpr.getSimpleExtraction(), arrayElements[0]);
            } else {
                final List<DimFilter> selectFilters = Arrays.stream(arrayElements).map(val -> newSelectorDimFilter(leftExpr.getSimpleExtraction(), val)).collect(Collectors.toList());
                return new AndDimFilter(selectFilters);
            }
        }
    }
    return toExpressionFilter(plannerContext, getDruidFunctionName(), druidExpressions);
}

Example 24 with AndDimFilter

use of org.apache.druid.query.filter.AndDimFilter in project hive by apache.

the class DruidStorageHandlerUtils method addDynamicFilters.

public static org.apache.druid.query.Query addDynamicFilters(org.apache.druid.query.Query query, ExprNodeGenericFuncDesc filterExpr, Configuration conf, boolean resolveDynamicValues) {
    List<VirtualColumn> virtualColumns = Arrays.asList(getVirtualColumns(query).getVirtualColumns());
    org.apache.druid.query.Query rv = query;
    DimFilter joinReductionFilter = toDruidFilter(filterExpr, conf, virtualColumns, resolveDynamicValues);
    if (joinReductionFilter != null) {
        String type = query.getType();
        DimFilter filter = new AndDimFilter(joinReductionFilter, query.getFilter());
        switch(type) {
            case org.apache.druid.query.Query.TIMESERIES:
                rv = Druids.TimeseriesQueryBuilder.copy((TimeseriesQuery) query).filters(filter).virtualColumns(VirtualColumns.create(virtualColumns)).build();
                break;
            case org.apache.druid.query.Query.TOPN:
                rv = new TopNQueryBuilder((TopNQuery) query).filters(filter).virtualColumns(VirtualColumns.create(virtualColumns)).build();
                break;
            case org.apache.druid.query.Query.GROUP_BY:
                rv = new GroupByQuery.Builder((GroupByQuery) query).setDimFilter(filter).setVirtualColumns(VirtualColumns.create(virtualColumns)).build();
                break;
            case org.apache.druid.query.Query.SCAN:
                rv = Druids.ScanQueryBuilder.copy((ScanQuery) query).filters(filter).virtualColumns(VirtualColumns.create(virtualColumns)).build();
                break;
            default:
                throw new UnsupportedOperationException("Unsupported Query type " + type);
        }
    }
    return rv;
}

Example 25 with AndDimFilter

use of org.apache.druid.query.filter.AndDimFilter in project druid by druid-io.

the class SearchBenchmark method basicD.

private static SearchQueryBuilder basicD(final GeneratorSchemaInfo basicSchema) {
    final QuerySegmentSpec intervalSpec = new MultipleIntervalSegmentSpec(Collections.singletonList(basicSchema.getDataInterval()));
    final List<String> dimUniformFilterVals = new ArrayList<>();
    final int resultNum = (int) (100000 * 0.1);
    final int step = 100000 / resultNum;
    for (int i = 1; i < 100001 && dimUniformFilterVals.size() < resultNum; i += step) {
        dimUniformFilterVals.add(String.valueOf(i));
    }
    final String dimName = "dimUniform";
    final List<DimFilter> dimFilters = new ArrayList<>();
    dimFilters.add(new InDimFilter(dimName, dimUniformFilterVals, null));
    dimFilters.add(new SelectorDimFilter(dimName, "3", null));
    dimFilters.add(new BoundDimFilter(dimName, "100", "10000", true, true, true, null, null));
    return Druids.newSearchQueryBuilder().dataSource("blah").granularity(Granularities.ALL).intervals(intervalSpec).query("").dimensions(Collections.singletonList("dimUniform")).filters(new AndDimFilter(dimFilters));
}