Examples with ValuePointer io.trino.sql.planner.rowpattern.ValuePointer used on opensource projects

Example 1 with ValuePointer

use of io.trino.sql.planner.rowpattern.ValuePointer in project trino by trinodb.

the class TestPatternRecognitionNodeSerialization method testScalarValuePointerRoundtrip.

@Test
public void testScalarValuePointerRoundtrip() {
    JsonCodec<ValuePointer> codec = new JsonCodecFactory(new ObjectMapperProvider()).jsonCodec(ValuePointer.class);
    assertJsonRoundTrip(codec, new ScalarValuePointer(new LogicalIndexPointer(ImmutableSet.of(), false, false, 5, 5), new Symbol("input_symbol")));
    assertJsonRoundTrip(codec, new ScalarValuePointer(new LogicalIndexPointer(ImmutableSet.of(new IrLabel("A"), new IrLabel("B")), true, true, 1, -1), new Symbol("input_symbol")));
}

Example 2 with ValuePointer

use of io.trino.sql.planner.rowpattern.ValuePointer in project trino by trinodb.

the class SymbolMapper method map.

private ExpressionAndValuePointers map(ExpressionAndValuePointers expressionAndValuePointers) {
    // Map only the input symbols of ValuePointers. These are the symbols produced by the source node.
    // Other symbols present in the ExpressionAndValuePointers structure are synthetic unique symbols
    // with no outer usage or dependencies.
    ImmutableList.Builder<ValuePointer> newValuePointers = ImmutableList.builder();
    for (ValuePointer valuePointer : expressionAndValuePointers.getValuePointers()) {
        if (valuePointer instanceof ScalarValuePointer) {
            ScalarValuePointer scalarValuePointer = (ScalarValuePointer) valuePointer;
            Symbol inputSymbol = scalarValuePointer.getInputSymbol();
            if (expressionAndValuePointers.getClassifierSymbols().contains(inputSymbol) || expressionAndValuePointers.getMatchNumberSymbols().contains(inputSymbol)) {
                newValuePointers.add(scalarValuePointer);
            } else {
                newValuePointers.add(new ScalarValuePointer(scalarValuePointer.getLogicalIndexPointer(), map(inputSymbol)));
            }
        } else {
            AggregationValuePointer aggregationValuePointer = (AggregationValuePointer) valuePointer;
            List<Expression> newArguments = aggregationValuePointer.getArguments().stream().map(expression -> ExpressionTreeRewriter.rewriteWith(new ExpressionRewriter<Void>() {

                @Override
                public Expression rewriteSymbolReference(SymbolReference node, Void context, ExpressionTreeRewriter<Void> treeRewriter) {
                    if (Symbol.from(node).equals(aggregationValuePointer.getClassifierSymbol()) || Symbol.from(node).equals(aggregationValuePointer.getMatchNumberSymbol())) {
                        return node;
                    }
                    return map(node);
                }
            }, expression)).collect(toImmutableList());
            newValuePointers.add(new AggregationValuePointer(aggregationValuePointer.getFunction(), aggregationValuePointer.getSetDescriptor(), newArguments, aggregationValuePointer.getClassifierSymbol(), aggregationValuePointer.getMatchNumberSymbol()));
        }
    }
    return new ExpressionAndValuePointers(expressionAndValuePointers.getExpression(), expressionAndValuePointers.getLayout(), newValuePointers.build(), expressionAndValuePointers.getClassifierSymbols(), expressionAndValuePointers.getMatchNumberSymbols());
}

Example 3 with ValuePointer

use of io.trino.sql.planner.rowpattern.ValuePointer in project trino by trinodb.

the class PushDownProjectionsFromPatternRecognition method rewrite.

private static ExpressionAndValuePointers rewrite(ExpressionAndValuePointers expression, Assignments.Builder assignments, Context context) {
    ImmutableList.Builder<ValuePointer> rewrittenPointers = ImmutableList.builder();
    for (ValuePointer valuePointer : expression.getValuePointers()) {
        if (valuePointer instanceof ScalarValuePointer) {
            rewrittenPointers.add(valuePointer);
        } else {
            AggregationValuePointer aggregationPointer = (AggregationValuePointer) valuePointer;
            Set<Symbol> runtimeEvaluatedSymbols = ImmutableSet.of(aggregationPointer.getClassifierSymbol(), aggregationPointer.getMatchNumberSymbol());
            List<Type> argumentTypes = aggregationPointer.getFunction().getSignature().getArgumentTypes();
            ImmutableList.Builder<Expression> rewrittenArguments = ImmutableList.builder();
            for (int i = 0; i < aggregationPointer.getArguments().size(); i++) {
                Expression argument = aggregationPointer.getArguments().get(i);
                if (argument instanceof SymbolReference || SymbolsExtractor.extractUnique(argument).stream().anyMatch(runtimeEvaluatedSymbols::contains)) {
                    rewrittenArguments.add(argument);
                } else {
                    Symbol symbol = context.getSymbolAllocator().newSymbol(argument, argumentTypes.get(i));
                    assignments.put(symbol, argument);
                    rewrittenArguments.add(symbol.toSymbolReference());
                }
            }
            rewrittenPointers.add(new AggregationValuePointer(aggregationPointer.getFunction(), aggregationPointer.getSetDescriptor(), rewrittenArguments.build(), aggregationPointer.getClassifierSymbol(), aggregationPointer.getMatchNumberSymbol()));
        }
    }
    return new ExpressionAndValuePointers(expression.getExpression(), expression.getLayout(), rewrittenPointers.build(), expression.getClassifierSymbols(), expression.getMatchNumberSymbols());
}

Example 4 with ValuePointer

use of io.trino.sql.planner.rowpattern.ValuePointer in project trino by trinodb.

the class TestPatternRecognitionNodeSerialization method testAggregationValuePointerRoundtrip.

@Test
public void testAggregationValuePointerRoundtrip() {
    ObjectMapperProvider provider = new ObjectMapperProvider();
    provider.setJsonSerializers(ImmutableMap.of(Expression.class, new ExpressionSerialization.ExpressionSerializer()));
    provider.setJsonDeserializers(ImmutableMap.of(Expression.class, new ExpressionSerialization.ExpressionDeserializer(new SqlParser()), Type.class, new TypeDeserializer(TESTING_TYPE_MANAGER)));
    provider.setKeyDeserializers(ImmutableMap.of(TypeSignature.class, new TypeSignatureKeyDeserializer()));
    JsonCodec<ValuePointer> codec = new JsonCodecFactory(provider).jsonCodec(ValuePointer.class);
    ResolvedFunction countFunction = createTestMetadataManager().resolveFunction(TEST_SESSION, QualifiedName.of("count"), ImmutableList.of());
    assertJsonRoundTrip(codec, new AggregationValuePointer(countFunction, new AggregatedSetDescriptor(ImmutableSet.of(), false), ImmutableList.of(), new Symbol("classifier"), new Symbol("match_number")));
    ResolvedFunction maxFunction = createTestMetadataManager().resolveFunction(TEST_SESSION, QualifiedName.of("max"), fromTypes(BIGINT));
    assertJsonRoundTrip(codec, new AggregationValuePointer(maxFunction, new AggregatedSetDescriptor(ImmutableSet.of(new IrLabel("A"), new IrLabel("B")), true), ImmutableList.of(new NullLiteral()), new Symbol("classifier"), new Symbol("match_number")));
}