Examples with VariableReferenceExpression io.prestosql.spi.relation.VariableReferenceExpression used on opensource projects

Example 1 with VariableReferenceExpression

use of io.prestosql.spi.relation.VariableReferenceExpression in project hetu-core by openlookeng.

the class TestDynamicFiltersCollector method TestCollectingGlobalDynamicFilters.

@Test
public void TestCollectingGlobalDynamicFilters() throws InterruptedException {
    final QueryId queryId = new QueryId("test_query");
    final String filterId = "1";
    final String columnName = "column";
    final TestingColumnHandle columnHandle = new TestingColumnHandle(columnName);
    final Set<String> valueSet = ImmutableSet.of("1", "2", "3");
    TaskContext taskContext = mock(TaskContext.class);
    Session session = testSessionBuilder().setQueryId(queryId).setSystemProperty(ENABLE_DYNAMIC_FILTERING, "true").setSystemProperty(DYNAMIC_FILTERING_DATA_TYPE, "HASHSET").build();
    when(taskContext.getSession()).thenReturn(session);
    // set up state store and merged dynamic filters map
    Map mockMap = new HashMap<>();
    StateStoreProvider stateStoreProvider = mock(StateStoreProvider.class);
    StateStore stateStore = mock(StateStore.class);
    StateMap stateMap = new MockStateMap<>("test-map", mockMap);
    when(stateStoreProvider.getStateStore()).thenReturn(stateStore);
    when(stateStore.getStateCollection(any())).thenReturn(stateMap);
    when(stateStore.createStateMap(any())).thenReturn(stateMap);
    when(stateStore.getOrCreateStateCollection(any(), any())).thenReturn(stateMap);
    // set up state store listener and dynamic filter cache
    StateStoreListenerManager stateStoreListenerManager = new StateStoreListenerManager(stateStoreProvider);
    DynamicFilterCacheManager dynamicFilterCacheManager = new DynamicFilterCacheManager();
    stateStoreListenerManager.addStateStoreListener(new DynamicFilterListener(dynamicFilterCacheManager), MERGED_DYNAMIC_FILTERS);
    LocalDynamicFiltersCollector collector = new LocalDynamicFiltersCollector(taskContext, Optional.empty(), dynamicFilterCacheManager);
    TableScanNode tableScan = mock(TableScanNode.class);
    when(tableScan.getAssignments()).thenReturn(ImmutableMap.of(new Symbol(columnName), columnHandle));
    List<DynamicFilters.Descriptor> dynamicFilterDescriptors = ImmutableList.of(new DynamicFilters.Descriptor(filterId, new VariableReferenceExpression(columnName, BIGINT)));
    collector.initContext(ImmutableList.of(dynamicFilterDescriptors), SymbolUtils.toLayOut(tableScan.getOutputSymbols()));
    assertTrue(collector.getDynamicFilters(tableScan).isEmpty(), "there should be no dynamic filter available");
    // put some values in state store as a new dynamic filter
    // and wait for the listener to process the event
    stateMap.put(createKey(DynamicFilterUtils.FILTERPREFIX, filterId, queryId.getId()), valueSet);
    TimeUnit.MILLISECONDS.sleep(100);
    // get available dynamic filter and verify it
    List<Map<ColumnHandle, DynamicFilter>> dynamicFilters = collector.getDynamicFilters(tableScan);
    assertEquals(dynamicFilters.size(), 1, "there should be a new dynamic filter");
    assertEquals(dynamicFilters.size(), 1);
    DynamicFilter dynamicFilter = dynamicFilters.get(0).get(columnHandle);
    assertTrue(dynamicFilter instanceof HashSetDynamicFilter, "new dynamic filter should be hashset");
    assertEquals(dynamicFilter.getSize(), valueSet.size(), "new dynamic filter should have correct size");
    for (String value : valueSet) {
        assertTrue(dynamicFilter.contains(value), "new dynamic filter should contain correct values");
    }
    // clean up when task finishes
    collector.removeDynamicFilter(true);
    DynamicFilter cachedFilter = dynamicFilterCacheManager.getDynamicFilter(DynamicFilterCacheManager.createCacheKey(filterId, queryId.getId()));
    assertNull(cachedFilter, "cached dynamic filter should have been removed");
}

Example 2 with VariableReferenceExpression

use of io.prestosql.spi.relation.VariableReferenceExpression in project hetu-core by openlookeng.

the class RowExpressionVerifier method visitCast.

@Override
protected Boolean visitCast(Cast expected, RowExpression actual) {
    // TODO: clean up cast path
    if (actual instanceof ConstantExpression && expected.getExpression() instanceof Literal && expected.getType().equals(actual.getType().toString())) {
        Literal literal = (Literal) expected.getExpression();
        if (literal instanceof StringLiteral) {
            Object value = LiteralInterpreter.evaluate((ConstantExpression) actual);
            String actualString = value instanceof Slice ? ((Slice) value).toStringUtf8() : String.valueOf(value);
            return ((StringLiteral) literal).getValue().equals(actualString);
        }
        return getValueFromLiteral(literal).equals(String.valueOf(LiteralInterpreter.evaluate((ConstantExpression) actual)));
    }
    if (actual instanceof VariableReferenceExpression && expected.getExpression() instanceof SymbolReference && expected.getType().equals(actual.getType().toString())) {
        return visitSymbolReference((SymbolReference) expected.getExpression(), actual);
    }
    if (!(actual instanceof CallExpression) || !functionResolution.isCastFunction(((CallExpression) actual).getFunctionHandle())) {
        return false;
    }
    if (!expected.getType().equalsIgnoreCase(actual.getType().toString()) && !(expected.getType().toLowerCase(ENGLISH).equals(VARCHAR) && actual.getType().getTypeSignature().getBase().equals(VARCHAR))) {
        return false;
    }
    return process(expected.getExpression(), ((CallExpression) actual).getArguments().get(0));
}

Example 3 with VariableReferenceExpression

use of io.prestosql.spi.relation.VariableReferenceExpression in project hetu-core by openlookeng.

the class TestStarTreeAggregationRule method testSupportedProjectNode.

@Test
public void testSupportedProjectNode() {
    // node is projectNode and expression instance of cast
    Assignments assignment1 = Assignments.builder().put(columnCustkey, new VariableReferenceExpression(columnCustkey.getName(), custkeyHandle.getType())).build();
    Optional<PlanNode> planNode1 = Optional.of(new ProjectNode(newId(), baseTableScan, assignment1));
    assertTrue(CubeOptimizerUtil.supportedProjectNode(planNode1));
    // not projectNode
    ListMultimap<Symbol, Symbol> mappings = ImmutableListMultimap.<Symbol, Symbol>builder().put(output, columnOrderkey).put(output, columnOrderkey).build();
    Optional<PlanNode> planNode2 = Optional.of(new UnionNode(newId(), ImmutableList.of(baseTableScan, baseTableScan), mappings, ImmutableList.copyOf(mappings.keySet())));
    assertFalse(CubeOptimizerUtil.supportedProjectNode(planNode2));
    // expression not instance of Cast
    Assignments assignment2 = Assignments.builder().put(columnCustkey, new InputReferenceExpression(1, INTEGER)).build();
    Optional<PlanNode> planNode3 = Optional.of(new ProjectNode(newId(), baseTableScan, assignment2));
    assertFalse(CubeOptimizerUtil.supportedProjectNode(planNode3));
    // expression is instance of SymbolReference OR Literal
    Assignments assignment3 = Assignments.builder().put(columnCustkey, // should be INTEGER
    new VariableReferenceExpression(columnCustkey.getName(), custkeyHandle.getType())).build();
    Optional<PlanNode> planNode4 = Optional.of(new ProjectNode(newId(), baseTableScan, assignment3));
    assertTrue(CubeOptimizerUtil.supportedProjectNode(planNode4));
    // empty node
    Optional<PlanNode> emptyPlanNode = Optional.empty();
    assertTrue(CubeOptimizerUtil.supportedProjectNode(emptyPlanNode));
}

Example 4 with VariableReferenceExpression

use of io.prestosql.spi.relation.VariableReferenceExpression in project hetu-core by openlookeng.

the class CubeStatementGenerator method generate.

public static CubeStatement generate(String fromTable, AggregationNode aggregationNode, Map<String, Object> symbolMappings) {
    CubeStatement.Builder builder = CubeStatement.newBuilder();
    builder.from(fromTable);
    Map<Symbol, AggregationNode.Aggregation> aggregations = aggregationNode.getAggregations();
    // Extract selection and aggregation
    for (Symbol symbol : aggregationNode.getOutputSymbols()) {
        Object column = symbolMappings.get(symbol.getName());
        if (column instanceof ColumnHandle) {
            // Selection
            String columnName = ((ColumnHandle) column).getColumnName();
            builder.select(columnName);
        } else if (aggregations.containsKey(symbol)) {
            // Aggregation
            Map<Symbol, AggregationSignature> signatures = Collections.emptyMap();
            AggregationNode.Aggregation aggregation = aggregations.get(symbol);
            List<RowExpression> arguments = aggregation.getArguments();
            if (arguments.isEmpty()) {
                signatures = createSignature(aggregation, symbol, null);
            } else if (arguments.size() == 1) {
                RowExpression argument = arguments.get(0);
                if (OriginalExpressionUtils.isExpression(argument)) {
                    Expression argAsExpr = OriginalExpressionUtils.castToExpression(argument);
                    if (argAsExpr instanceof SymbolReference) {
                        signatures = createSignature(aggregation, symbol, symbolMappings.get(((SymbolReference) argAsExpr).getName()));
                    }
                } else if (argument instanceof VariableReferenceExpression) {
                    signatures = createSignature(aggregation, symbol, symbolMappings.get(((VariableReferenceExpression) argument).getName()));
                }
            }
            if (signatures.isEmpty()) {
                throw new IllegalArgumentException("Failed to generate aggregator signature");
            }
            for (Map.Entry<Symbol, AggregationSignature> aggEntry : signatures.entrySet()) {
                builder.aggregate(aggEntry.getValue());
            }
        } else {
            throw new IllegalArgumentException("Column " + column + " is not an actual column or expressions");
        }
    }
    // Extract group by
    for (Symbol symbol : aggregationNode.getGroupingKeys()) {
        Object column = symbolMappings.get(symbol.getName());
        if (column instanceof ColumnHandle) {
            builder.groupByAddString(((ColumnHandle) column).getColumnName());
        } else {
            // Don't know how to handle it
            throw new IllegalArgumentException("Column " + symbol + " is not an actual column");
        }
    }
    return builder.build();
}

Example 5 with VariableReferenceExpression

use of io.prestosql.spi.relation.VariableReferenceExpression in project hetu-core by openlookeng.

the class TableDeleteOperator method getOutput.

@Override
public Page getOutput() {
    if (state == State.FINISHED || (sourceLayout.isPresent() && state != State.FINISHING)) {
        return null;
    }
    state = State.FINISHED;
    TableHandle tableHandleForDelete = tableHandle;
    if (sourceLayout.isPresent()) {
        // Replace the values from subqueries in filter predicates
        VariablesExtractor.extractUnique(filter.get()).stream().forEach(expr -> symbolExpressionMap.putIfAbsent(new Symbol(expr.getName()), expr));
        RowExpression rowExpression = RowExpressionVariableInliner.inlineVariables(node -> symbolExpressionMap.get(new Symbol(node.getName())), filter.get());
        // Create the tuple domain based on filter and values from source;
        RowExpressionDomainTranslator.ExtractionResult<VariableReferenceExpression> decomposedPredicate = (new RowExpressionDomainTranslator(metadata)).fromPredicate(session.toConnectorSession(), rowExpression, RowExpressionDomainTranslator.BASIC_COLUMN_EXTRACTOR);
        TupleDomain<ColumnHandle> tupleDomain = decomposedPredicate.getTupleDomain().transform(variableName -> assignments.get(new Symbol(variableName.getName())));
        Constraint constraint = new Constraint(tupleDomain);
        // Apply the constraint on the table handle
        Optional<TableHandle> tableHandleDelete = metadata.applyDelete(session, this.tableHandle, constraint);
        if (tableHandleDelete.isPresent()) {
            tableHandleForDelete = tableHandleDelete.get();
        }
    }
    OptionalLong rowsDeletedCount = metadata.executeDelete(session, tableHandleForDelete);
    // output page will only be constructed once,
    // so a new PageBuilder is constructed (instead of using PageBuilder.reset)
    PageBuilder page = new PageBuilder(1, TYPES);
    BlockBuilder rowsBuilder = page.getBlockBuilder(0);
    page.declarePosition();
    if (rowsDeletedCount.isPresent()) {
        BIGINT.writeLong(rowsBuilder, rowsDeletedCount.getAsLong());
    } else {
        rowsBuilder.appendNull();
    }
    return page.build();
}