Examples with IndexFieldMapper org.locationtech.geowave.core.store.api.IndexFieldMapper used on opensource projects

Example 1 with IndexFieldMapper

use of org.locationtech.geowave.core.store.api.IndexFieldMapper in project geowave by locationtech.

the class OptimalExpressionQuery method determineBestIndices.

@SuppressWarnings({ "rawtypes", "unchecked" })
public List<Pair<Index, List<InternalDataAdapter<?>>>> determineBestIndices(final BaseQueryOptions baseOptions, final InternalDataAdapter<?>[] adapters, final AdapterIndexMappingStore adapterIndexMappingStore, final IndexStore indexStore, final DataStatisticsStore statisticsStore) {
    final Map<Index, List<InternalDataAdapter<?>>> bestIndices = Maps.newHashMap();
    final Set<String> referencedFields = Sets.newHashSet();
    filter.addReferencedFields(referencedFields);
    for (final InternalDataAdapter<?> adapter : adapters) {
        if (!adapterMatchesFilter(adapter, referencedFields)) {
            continue;
        }
        final AdapterToIndexMapping[] adapterIndices = adapterIndexMappingStore.getIndicesForAdapter(adapter.getAdapterId());
        final Map<Index, FilterConstraints<?>> indexConstraints = Maps.newHashMap();
        Index bestIndex = null;
        for (final AdapterToIndexMapping mapping : adapterIndices) {
            if ((baseOptions.getIndexName() != null) && !baseOptions.getIndexName().equals(mapping.getIndexName())) {
                continue;
            }
            final Index index = mapping.getIndex(indexStore);
            if (indexFilter != null && !indexFilter.test(index)) {
                continue;
            }
            if ((bestIndex == null) || ((bestIndex instanceof AttributeIndex) && !(index instanceof AttributeIndex))) {
                bestIndex = index;
            }
            final Set<String> indexedFields = Sets.newHashSet();
            final Class<? extends Comparable> filterClass;
            if ((index instanceof CustomIndex) && (((CustomIndex<?, ?>) index).getCustomIndexStrategy() instanceof TextIndexStrategy)) {
                final TextIndexStrategy<?> indexStrategy = (TextIndexStrategy<?>) ((CustomIndex<?, ?>) index).getCustomIndexStrategy();
                if (!(indexStrategy.getEntryConverter() instanceof AdapterFieldTextIndexEntryConverter)) {
                    continue;
                }
                indexedFields.add(((AdapterFieldTextIndexEntryConverter<?>) indexStrategy.getEntryConverter()).getFieldName());
                filterClass = String.class;
            } else {
                for (final IndexFieldMapper<?, ?> mapper : mapping.getIndexFieldMappers()) {
                    for (final String adapterField : mapper.getAdapterFields()) {
                        indexedFields.add(adapterField);
                    }
                }
                // Remove any fields that are part of the common index model, but not used in the index
                // strategy. They shouldn't be considered when trying to find a best match. In the future
                // it may be useful to consider an index that has extra common index dimensions that
                // contain filtered fields over one that only matches indexed dimensions. For example, if
                // I have a spatial index, and a spatial index that stores time, it should pick the one
                // that stores time if I supply a temporal constraint, even though it isn't part of the
                // index strategy.
                final int modelDimensions = index.getIndexModel().getDimensions().length;
                final int strategyDimensions = index.getIndexStrategy().getOrderedDimensionDefinitions().length;
                for (int i = modelDimensions - 1; i >= strategyDimensions; i--) {
                    final IndexFieldMapper<?, ?> mapper = mapping.getMapperForIndexField(index.getIndexModel().getDimensions()[i].getFieldName());
                    for (final String adapterField : mapper.getAdapterFields()) {
                        indexedFields.remove(adapterField);
                    }
                }
                filterClass = Double.class;
            }
            if (referencedFields.containsAll(indexedFields)) {
                final FilterConstraints<?> constraints = filter.getConstraints(filterClass, statisticsStore, adapter, mapping, index, indexedFields);
                if (constraints.constrainsAllFields(indexedFields)) {
                    indexConstraints.put(index, constraints);
                }
            }
        }
        if (indexConstraints.size() == 1) {
            final Entry<Index, FilterConstraints<?>> bestEntry = indexConstraints.entrySet().iterator().next();
            bestIndex = bestEntry.getKey();
            constraintCache.put(adapter.getTypeName(), bestEntry.getValue());
        } else if (indexConstraints.size() > 1) {
            // determine which constraint is the best
            double bestCardinality = Double.MAX_VALUE;
            Index bestConstrainedIndex = null;
            for (final Entry<Index, FilterConstraints<?>> entry : indexConstraints.entrySet()) {
                final QueryRanges ranges = entry.getValue().getQueryRanges(baseOptions, statisticsStore);
                if (ranges.isEmpty()) {
                    continue;
                }
                // TODO: A future optimization would be to add a default numeric histogram for any numeric
                // index dimensions and just use the index data ranges to determine cardinality rather
                // than decomposing query ranges.
                final StatisticId<RowRangeHistogramValue> statisticId = IndexStatistic.generateStatisticId(entry.getKey().getName(), RowRangeHistogramStatistic.STATS_TYPE, Statistic.INTERNAL_TAG);
                final RowRangeHistogramStatistic histogram = (RowRangeHistogramStatistic) statisticsStore.getStatisticById(statisticId);
                final double cardinality = DataStoreUtils.cardinality(statisticsStore, histogram, adapter, bestConstrainedIndex, ranges);
                if ((bestConstrainedIndex == null) || (cardinality < bestCardinality)) {
                    bestConstrainedIndex = entry.getKey();
                    bestCardinality = cardinality;
                }
            }
            if (bestConstrainedIndex != null) {
                bestIndex = bestConstrainedIndex;
                constraintCache.put(adapter.getTypeName(), indexConstraints.get(bestIndex));
            }
        }
        if (bestIndex == null) {
            continue;
        }
        if (!bestIndices.containsKey(bestIndex)) {
            bestIndices.put(bestIndex, Lists.newArrayList());
        }
        bestIndices.get(bestIndex).add(adapter);
    }
    return bestIndices.entrySet().stream().map(e -> Pair.of(e.getKey(), e.getValue())).collect(Collectors.toList());
}

Example 2 with IndexFieldMapper

use of org.locationtech.geowave.core.store.api.IndexFieldMapper in project geowave by locationtech.

the class ExpressionQueryFilter method accept.

@SuppressWarnings({ "unchecked", "rawtypes" })
@Override
public boolean accept(final CommonIndexModel indexModel, final IndexedPersistenceEncoding<?> persistenceEncoding) {
    if ((filter != null) && (indexModel != null) && (adapter != null) && (indexMapping != null)) {
        final Map<String, Object> fieldValues = Maps.newHashMap();
        if (!referencedFieldsInitialized) {
            initReferencedFields();
        }
        final PersistentDataset<?> commonData = persistenceEncoding.getCommonData();
        PersistentDataset<Object> adapterExtendedValues = null;
        for (final String field : referencedFields) {
            if (fieldValues.containsKey(field)) {
                continue;
            }
            if (fieldToIndexFieldMap.containsKey(field)) {
                final IndexFieldMapper<?, ?> mapper = fieldToIndexFieldMap.get(field);
                final Object indexValue = commonData.getValue(mapper.indexFieldName());
                ((IndexFieldMapper) mapper).toAdapter(indexValue, new MapRowBuilder(fieldValues));
            } else {
                final Object value = commonData.getValue(field);
                if (value != null) {
                    fieldValues.put(field, value);
                } else {
                    if (adapterExtendedValues == null) {
                        adapterExtendedValues = new MultiFieldPersistentDataset<>();
                        if (persistenceEncoding instanceof AbstractAdapterPersistenceEncoding) {
                            ((AbstractAdapterPersistenceEncoding) persistenceEncoding).convertUnknownValues(adapter, indexModel);
                            final PersistentDataset<Object> existingExtValues = ((AbstractAdapterPersistenceEncoding) persistenceEncoding).getAdapterExtendedData();
                            if (persistenceEncoding.isAsync()) {
                                return false;
                            }
                            if (existingExtValues != null) {
                                adapterExtendedValues.addValues(existingExtValues.getValues());
                            }
                        }
                    }
                    fieldValues.put(field, adapterExtendedValues.getValue(field));
                }
            }
        }
        return filter.evaluate(fieldValues);
    }
    return true;
}

Example 3 with IndexFieldMapper

use of org.locationtech.geowave.core.store.api.IndexFieldMapper in project geowave by locationtech.

the class BaseDataStoreUtils method mapAdapterToIndex.

@SuppressWarnings({ "unchecked", "rawtypes" })
public static AdapterToIndexMapping mapAdapterToIndex(final InternalDataAdapter<?> adapter, final Index index) {
    // Build up a list of index field mappers
    final Map<String, IndexFieldMapper<?, ?>> mappers = Maps.newHashMap();
    // Get index model dimensions
    final NumericDimensionField<?>[] dimensions = index.getIndexModel().getDimensions();
    // Map dimensions to index fields
    final Map<String, List<NumericDimensionField>> indexFields = Arrays.stream(dimensions).collect(Collectors.groupingBy(dim -> dim.getFieldName(), Collectors.mapping(dim -> dim, Collectors.toList())));
    // Get adapter fields
    final FieldDescriptor<?>[] adapterFields = adapter.getFieldDescriptors();
    for (final Entry<String, List<NumericDimensionField>> indexField : indexFields.entrySet()) {
        // Get the hints used by all dimensions of the field
        final Set<IndexDimensionHint> dimensionHints = Sets.newHashSet();
        indexField.getValue().forEach(dim -> dimensionHints.addAll(dim.getDimensionHints()));
        final Class<?> indexFieldClass = indexField.getValue().get(0).getFieldClass();
        final String indexFieldName = indexField.getKey();
        final IndexFieldOptions indexFieldOptions = indexField.getValue().get(0).getIndexFieldOptions();
        // Get available mappers for the field class
        final List<IndexFieldMapper<?, ?>> availableMappers = IndexFieldMapperRegistry.instance().getAvailableMappers(indexFieldClass);
        if (availableMappers.size() == 0) {
            throw new IllegalArgumentException("No index field mappers were found for the type: " + indexFieldClass.getName());
        }
        final List<FieldDescriptor<?>> hintedFields;
        if (index instanceof AttributeIndex) {
            // Only check the field that is set for the attribute index
            hintedFields = Lists.newArrayList(adapter.getFieldDescriptor(((AttributeIndex) index).getAttributeName()));
        } else {
            // Get any adapter fields that have been hinted for this field
            hintedFields = Arrays.stream(adapterFields).filter(field -> dimensionHints.stream().anyMatch(field.indexHints()::contains)).collect(Collectors.toList());
        }
        if (hintedFields.size() > 0) {
            final Class<?> hintedFieldClass = hintedFields.get(0).bindingClass();
            for (int i = 1; i < hintedFields.size(); i++) {
                if (!hintedFieldClass.equals(hintedFields.get(i).bindingClass())) {
                    throw new IllegalArgumentException("All hinted fields must be of the same type.");
                }
            }
            boolean mapperFound = false;
            // Find a mapper that matches
            for (final IndexFieldMapper<?, ?> mapper : availableMappers) {
                if (mapper.isCompatibleWith(hintedFieldClass) && (mapper.adapterFieldCount() == hintedFields.size())) {
                    mapper.init(indexField.getKey(), (List) hintedFields, indexFieldOptions);
                    mappers.put(indexField.getKey(), mapper);
                    mapperFound = true;
                    break;
                }
            }
            if (!mapperFound) {
                throw new IllegalArgumentException("No registered index field mappers were found for the type: " + hintedFieldClass.getName() + "[" + hintedFields.size() + "] -> " + indexFieldClass.getName());
            }
        } else {
            // Attempt to infer the field to use
            // See if there are any suggested fields
            boolean mapperFound = false;
            for (final IndexFieldMapper<?, ?> mapper : availableMappers) {
                final Set<String> suggestedFieldNames = mapper.getLowerCaseSuggestedFieldNames();
                final List<FieldDescriptor<?>> matchingFields = Arrays.stream(adapterFields).filter(field -> mapper.isCompatibleWith(field.bindingClass()) && suggestedFieldNames.contains(field.fieldName().toLowerCase())).collect(Collectors.toList());
                if (matchingFields.size() >= mapper.adapterFieldCount()) {
                    mapperFound = true;
                    mapper.init(indexFieldName, (List) matchingFields.stream().limit(mapper.adapterFieldCount()).collect(Collectors.toList()), indexFieldOptions);
                    mappers.put(indexFieldName, mapper);
                    break;
                }
            }
            // See if a direct mapper is available
            if (!mapperFound) {
                for (final FieldDescriptor<?> fieldDescriptor : adapterFields) {
                    if (fieldDescriptor.bindingClass().equals(indexFieldClass)) {
                        final Optional<IndexFieldMapper<?, ?>> matchingMapper = availableMappers.stream().filter(mapper -> mapper.isCompatibleWith(fieldDescriptor.bindingClass()) && (mapper.adapterFieldCount() == 1)).findFirst();
                        if (matchingMapper.isPresent()) {
                            final IndexFieldMapper<?, ?> mapper = matchingMapper.get();
                            mapperFound = true;
                            mapper.init(indexFieldName, (List) Lists.newArrayList(fieldDescriptor), indexFieldOptions);
                            mappers.put(indexFieldName, mapper);
                            break;
                        }
                    }
                }
            }
            // Check other mappers
            if (!mapperFound) {
                for (final IndexFieldMapper<?, ?> mapper : availableMappers) {
                    final List<FieldDescriptor<?>> matchingFields = Arrays.stream(adapterFields).filter(field -> mapper.isCompatibleWith(field.bindingClass())).collect(Collectors.toList());
                    if (matchingFields.size() >= mapper.adapterFieldCount()) {
                        mapperFound = true;
                        mapper.init(indexFieldName, (List) matchingFields.stream().limit(mapper.adapterFieldCount()).collect(Collectors.toList()), indexFieldOptions);
                        mappers.put(indexFieldName, mapper);
                        break;
                    }
                }
            }
            if (!mapperFound) {
                throw new IllegalArgumentException("No suitable index field mapper could be found for the index field " + indexFieldName);
            }
        }
    }
    return new AdapterToIndexMapping(adapter.getAdapterId(), index.getName(), mappers.values().stream().collect(Collectors.toList()));
}