Examples with SqlAstProcessingState org.hibernate.sql.ast.spi.SqlAstProcessingState used on opensource projects

Example 1 with SqlAstProcessingState

use of org.hibernate.sql.ast.spi.SqlAstProcessingState in project hibernate-orm by hibernate.

the class MultiTableSqmMutationConverter method visitWhereClause.

public Predicate visitWhereClause(SqmWhereClause sqmWhereClause, Consumer<ColumnReference> restrictionColumnReferenceConsumer, SqmParameterResolutionConsumer parameterResolutionConsumer) {
    this.parameterResolutionConsumer = parameterResolutionConsumer;
    if (sqmWhereClause == null || sqmWhereClause.getPredicate() == null) {
        return null;
    }
    final SqlAstProcessingState rootProcessingState = getCurrentProcessingState();
    final SqlAstProcessingStateImpl restrictionProcessingState = new SqlAstProcessingStateImpl(rootProcessingState, this, getCurrentClauseStack()::getCurrent) {

        @Override
        public SqlExpressionResolver getSqlExpressionResolver() {
            return this;
        }

        @Override
        public Expression resolveSqlExpression(String key, Function<SqlAstProcessingState, Expression> creator) {
            final Expression expression = rootProcessingState.getSqlExpressionResolver().resolveSqlExpression(key, creator);
            if (expression instanceof ColumnReference) {
                restrictionColumnReferenceConsumer.accept((ColumnReference) expression);
            }
            return expression;
        }
    };
    pushProcessingState(restrictionProcessingState, getFromClauseIndex());
    try {
        return SqlAstHelper.combinePredicates((Predicate) sqmWhereClause.getPredicate().accept(this), discriminatorPredicate);
    } finally {
        popProcessingStateStack();
        this.parameterResolutionConsumer = null;
    }
}

Example 2 with SqlAstProcessingState

use of org.hibernate.sql.ast.spi.SqlAstProcessingState in project hibernate-orm by hibernate.

the class CteInsertHandler method execute.

@Override
public int execute(DomainQueryExecutionContext executionContext) {
    final SqmInsertStatement<?> sqmInsertStatement = getSqmStatement();
    final SessionFactoryImplementor factory = executionContext.getSession().getFactory();
    final EntityPersister entityDescriptor = getEntityDescriptor().getEntityPersister();
    final String explicitDmlTargetAlias;
    if (sqmInsertStatement.getTarget().getExplicitAlias() == null) {
        explicitDmlTargetAlias = "dml_target";
    } else {
        explicitDmlTargetAlias = sqmInsertStatement.getTarget().getExplicitAlias();
    }
    final MultiTableSqmMutationConverter sqmConverter = new MultiTableSqmMutationConverter(entityDescriptor, sqmInsertStatement, sqmInsertStatement.getTarget(), explicitDmlTargetAlias, domainParameterXref, executionContext.getQueryOptions(), executionContext.getSession().getLoadQueryInfluencers(), executionContext.getQueryParameterBindings(), factory);
    final TableGroup insertingTableGroup = sqmConverter.getMutatingTableGroup();
    final Map<SqmParameter<?>, List<List<JdbcParameter>>> parameterResolutions;
    if (domainParameterXref.getSqmParameterCount() == 0) {
        parameterResolutions = Collections.emptyMap();
    } else {
        parameterResolutions = new IdentityHashMap<>();
    }
    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    // visit the insertion target using our special converter, collecting
    // information about the target paths
    final int size = sqmStatement.getInsertionTargetPaths().size();
    final List<Map.Entry<SqmCteTableColumn, Assignment>> targetPathColumns = new ArrayList<>(size);
    final List<SqmCteTableColumn> targetPathSqmCteColumns = new ArrayList<>(size);
    final Map<SqmParameter<?>, MappingModelExpressible<?>> paramTypeResolutions = new LinkedHashMap<>();
    final NamedTableReference entityTableReference = new NamedTableReference(cteTable.getCteName(), TemporaryTable.DEFAULT_ALIAS, true, sessionFactory);
    final InsertStatement insertStatement = new InsertStatement(entityTableReference);
    final BaseSqmToSqlAstConverter.AdditionalInsertValues additionalInsertValues = sqmConverter.visitInsertionTargetPaths((assignable, columnReferences) -> {
        // Find a matching cte table column and set that at the current index
        for (SqmCteTableColumn column : cteTable.getColumns()) {
            if (column.getType() == ((Expression) assignable).getExpressionType()) {
                insertStatement.addTargetColumnReferences(columnReferences);
                targetPathSqmCteColumns.add(column);
                targetPathColumns.add(new AbstractMap.SimpleEntry<>(column, new Assignment(assignable, (Expression) assignable)));
                return;
            }
        }
        throw new IllegalStateException("Couldn't find matching cte column for: " + ((Expression) assignable).getExpressionType());
    }, sqmInsertStatement, entityDescriptor, insertingTableGroup, (sqmParameter, mappingType, jdbcParameters) -> {
        parameterResolutions.computeIfAbsent(sqmParameter, k -> new ArrayList<>(1)).add(jdbcParameters);
        paramTypeResolutions.put(sqmParameter, mappingType);
    });
    final boolean assignsId = targetPathSqmCteColumns.contains(cteTable.getColumns().get(0));
    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    // Create the statement that represent the source for the entity cte
    final Stack<SqlAstProcessingState> processingStateStack = sqmConverter.getProcessingStateStack();
    final SqlAstProcessingState oldState = processingStateStack.pop();
    final Statement queryStatement;
    if (sqmInsertStatement instanceof SqmInsertSelectStatement) {
        final QueryPart queryPart = sqmConverter.visitQueryPart(((SqmInsertSelectStatement<?>) sqmInsertStatement).getSelectQueryPart());
        queryPart.visitQuerySpecs(querySpec -> {
            // in which case we will fill the row_number column instead of the id column
            if (additionalInsertValues.applySelections(querySpec, sessionFactory)) {
                final SqmCteTableColumn rowNumberColumn = cteTable.getColumns().get(cteTable.getColumns().size() - 1);
                final ColumnReference columnReference = new ColumnReference((String) null, rowNumberColumn.getColumnName(), false, null, null, (JdbcMapping) rowNumberColumn.getType(), sessionFactory);
                insertStatement.getTargetColumnReferences().set(insertStatement.getTargetColumnReferences().size() - 1, columnReference);
                targetPathSqmCteColumns.set(targetPathSqmCteColumns.size() - 1, rowNumberColumn);
            }
            if (!assignsId && entityDescriptor.getIdentifierGenerator() instanceof PostInsertIdentifierGenerator) {
                final BasicType<Integer> rowNumberType = sessionFactory.getTypeConfiguration().getBasicTypeForJavaType(Integer.class);
                querySpec.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, new Over<>(new SelfRenderingFunctionSqlAstExpression("row_number", (appender, args, walker) -> appender.appendSql("row_number()"), Collections.emptyList(), rowNumberType, rowNumberType), Collections.emptyList(), Collections.emptyList())));
            }
        });
        queryStatement = new SelectStatement(queryPart);
    } else {
        final List<SqmValues> sqmValuesList = ((SqmInsertValuesStatement<?>) sqmInsertStatement).getValuesList();
        final List<Values> valuesList = new ArrayList<>(sqmValuesList.size());
        for (SqmValues sqmValues : sqmValuesList) {
            final Values values = sqmConverter.visitValues(sqmValues);
            additionalInsertValues.applyValues(values);
            valuesList.add(values);
        }
        final QuerySpec querySpec = new QuerySpec(true);
        final NavigablePath navigablePath = new NavigablePath(entityDescriptor.getRootPathName());
        final List<String> columnNames = new ArrayList<>(targetPathColumns.size());
        for (Map.Entry<SqmCteTableColumn, Assignment> entry : targetPathColumns) {
            for (ColumnReference columnReference : entry.getValue().getAssignable().getColumnReferences()) {
                columnNames.add(columnReference.getColumnExpression());
                querySpec.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, columnReference));
            }
        }
        final ValuesTableGroup valuesTableGroup = new ValuesTableGroup(navigablePath, entityDescriptor.getEntityPersister(), valuesList, insertingTableGroup.getPrimaryTableReference().getIdentificationVariable(), columnNames, true, factory);
        querySpec.getFromClause().addRoot(valuesTableGroup);
        queryStatement = new SelectStatement(querySpec);
    }
    processingStateStack.push(oldState);
    sqmConverter.pruneTableGroupJoins();
    if (!assignsId && entityDescriptor.getIdentifierGenerator() instanceof PostInsertIdentifierGenerator) {
        // Add the row number to the assignments
        final SqmCteTableColumn rowNumberColumn = cteTable.getColumns().get(cteTable.getColumns().size() - 1);
        final ColumnReference columnReference = new ColumnReference((String) null, rowNumberColumn.getColumnName(), false, null, null, (JdbcMapping) rowNumberColumn.getType(), sessionFactory);
        insertStatement.getTargetColumnReferences().add(columnReference);
        targetPathSqmCteColumns.add(rowNumberColumn);
    }
    final CteTable entityCteTable = BaseSqmToSqlAstConverter.createCteTable(getCteTable(), targetPathSqmCteColumns, factory);
    // Create the main query spec that will return the count of rows
    final QuerySpec querySpec = new QuerySpec(true, 1);
    final List<DomainResult<?>> domainResults = new ArrayList<>(1);
    final SelectStatement statement = new SelectStatement(querySpec, domainResults);
    final CteStatement entityCte;
    if (additionalInsertValues.requiresRowNumberIntermediate()) {
        final CteTable fullEntityCteTable = BaseSqmToSqlAstConverter.createCteTable(getCteTable(), factory);
        final String baseTableName = "base_" + entityCteTable.getTableExpression();
        final CteStatement baseEntityCte = new CteStatement(entityCteTable.withName(baseTableName), queryStatement, // The query cte will be reused multiple times
        CteMaterialization.MATERIALIZED);
        statement.addCteStatement(baseEntityCte);
        final CteColumn rowNumberColumn = fullEntityCteTable.getCteColumns().get(fullEntityCteTable.getCteColumns().size() - 1);
        final ColumnReference rowNumberColumnReference = new ColumnReference("e", rowNumberColumn.getColumnExpression(), false, null, null, rowNumberColumn.getJdbcMapping(), factory);
        final CteColumn idColumn = fullEntityCteTable.getCteColumns().get(0);
        final BasicValuedMapping idType = (BasicValuedMapping) idColumn.getJdbcMapping();
        final Optimizer optimizer = ((OptimizableGenerator) entityDescriptor.getIdentifierGenerator()).getOptimizer();
        final BasicValuedMapping integerType = (BasicValuedMapping) rowNumberColumn.getJdbcMapping();
        final Expression rowNumberMinusOneModuloIncrement = new BinaryArithmeticExpression(new BinaryArithmeticExpression(rowNumberColumnReference, BinaryArithmeticOperator.SUBTRACT, new QueryLiteral<>(1, (BasicValuedMapping) rowNumberColumn.getJdbcMapping()), integerType), BinaryArithmeticOperator.MODULO, new QueryLiteral<>(optimizer.getIncrementSize(), integerType), integerType);
        // Create the CTE that fetches a new sequence value for the row numbers that need it
        {
            final QuerySpec rowsWithSequenceQuery = new QuerySpec(true);
            rowsWithSequenceQuery.getFromClause().addRoot(new CteTableGroup(new NamedTableReference(baseTableName, "e", false, factory)));
            rowsWithSequenceQuery.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, rowNumberColumnReference));
            final String fragment = ((BulkInsertionCapableIdentifierGenerator) entityDescriptor.getIdentifierGenerator()).determineBulkInsertionIdentifierGenerationSelectFragment(sessionFactory.getSqlStringGenerationContext());
            rowsWithSequenceQuery.getSelectClause().addSqlSelection(new SqlSelectionImpl(2, 1, new SelfRenderingSqlFragmentExpression(fragment)));
            rowsWithSequenceQuery.applyPredicate(new ComparisonPredicate(rowNumberMinusOneModuloIncrement, ComparisonOperator.EQUAL, new QueryLiteral<>(0, integerType)));
            final CteTable rowsWithSequenceCteTable = new CteTable(ROW_NUMBERS_WITH_SEQUENCE_VALUE, Arrays.asList(rowNumberColumn, idColumn), sessionFactory);
            final SelectStatement rowsWithSequenceStatement = new SelectStatement(rowsWithSequenceQuery);
            final CteStatement rowsWithSequenceCte = new CteStatement(rowsWithSequenceCteTable, rowsWithSequenceStatement, // The query cte will be reused multiple times
            CteMaterialization.MATERIALIZED);
            statement.addCteStatement(rowsWithSequenceCte);
        }
        // Create the CTE that represents the entity cte
        {
            final QuerySpec entityQuery = new QuerySpec(true);
            final NavigablePath navigablePath = new NavigablePath(baseTableName);
            final TableGroup baseTableGroup = new TableGroupImpl(navigablePath, null, new NamedTableReference(baseTableName, "e", false, factory), null);
            final TableGroup rowsWithSequenceTableGroup = new CteTableGroup(new NamedTableReference(ROW_NUMBERS_WITH_SEQUENCE_VALUE, "t", false, factory));
            baseTableGroup.addTableGroupJoin(new TableGroupJoin(rowsWithSequenceTableGroup.getNavigablePath(), SqlAstJoinType.LEFT, rowsWithSequenceTableGroup, new ComparisonPredicate(new BinaryArithmeticExpression(rowNumberColumnReference, BinaryArithmeticOperator.SUBTRACT, rowNumberMinusOneModuloIncrement, integerType), ComparisonOperator.EQUAL, new ColumnReference("t", rowNumberColumn.getColumnExpression(), false, null, null, rowNumberColumn.getJdbcMapping(), factory))));
            entityQuery.getFromClause().addRoot(baseTableGroup);
            entityQuery.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, new BinaryArithmeticExpression(new ColumnReference("t", idColumn.getColumnExpression(), false, null, null, idColumn.getJdbcMapping(), factory), BinaryArithmeticOperator.ADD, new BinaryArithmeticExpression(rowNumberColumnReference, BinaryArithmeticOperator.SUBTRACT, new ColumnReference("t", rowNumberColumn.getColumnExpression(), false, null, null, rowNumberColumn.getJdbcMapping(), factory), integerType), idType)));
            final CteTable finalEntityCteTable;
            if (targetPathSqmCteColumns.contains(getCteTable().getColumns().get(0))) {
                finalEntityCteTable = entityCteTable;
            } else {
                targetPathSqmCteColumns.add(0, getCteTable().getColumns().get(0));
                finalEntityCteTable = BaseSqmToSqlAstConverter.createCteTable(getCteTable(), targetPathSqmCteColumns, factory);
            }
            final List<CteColumn> cteColumns = finalEntityCteTable.getCteColumns();
            for (int i = 1; i < cteColumns.size(); i++) {
                final CteColumn cteColumn = cteColumns.get(i);
                entityQuery.getSelectClause().addSqlSelection(new SqlSelectionImpl(i + 1, i, new ColumnReference("e", cteColumn.getColumnExpression(), false, null, null, cteColumn.getJdbcMapping(), factory)));
            }
            final SelectStatement entityStatement = new SelectStatement(entityQuery);
            entityCte = new CteStatement(finalEntityCteTable, entityStatement, // The query cte will be reused multiple times
            CteMaterialization.MATERIALIZED);
            statement.addCteStatement(entityCte);
        }
    } else if (!assignsId && entityDescriptor.getIdentifierGenerator() instanceof PostInsertIdentifierGenerator) {
        final String baseTableName = "base_" + entityCteTable.getTableExpression();
        final CteStatement baseEntityCte = new CteStatement(entityCteTable.withName(baseTableName), queryStatement, // The query cte will be reused multiple times
        CteMaterialization.MATERIALIZED);
        statement.addCteStatement(baseEntityCte);
        targetPathSqmCteColumns.add(0, cteTable.getColumns().get(0));
        final CteTable finalEntityCteTable = BaseSqmToSqlAstConverter.createCteTable(getCteTable(), targetPathSqmCteColumns, factory);
        final QuerySpec finalQuerySpec = new QuerySpec(true);
        final SelectStatement finalQueryStatement = new SelectStatement(finalQuerySpec);
        entityCte = new CteStatement(finalEntityCteTable, finalQueryStatement, // The query cte will be reused multiple times
        CteMaterialization.MATERIALIZED);
    } else {
        entityCte = new CteStatement(entityCteTable, queryStatement, // The query cte will be reused multiple times
        CteMaterialization.MATERIALIZED);
        statement.addCteStatement(entityCte);
    }
    // Add all CTEs
    final String baseInsertCte = addDmlCtes(statement, entityCte, targetPathColumns, assignsId, sqmConverter, parameterResolutions, factory);
    final Expression count = createCountStar(factory, sqmConverter);
    domainResults.add(new BasicResult(0, null, ((SqlExpressible) count).getJdbcMapping().getJavaTypeDescriptor()));
    querySpec.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, count));
    querySpec.getFromClause().addRoot(new CteTableGroup(new NamedTableReference(// We want to return the insertion count of the base table
    baseInsertCte, CTE_TABLE_IDENTIFIER, false, factory)));
    // Execute the statement
    final JdbcServices jdbcServices = factory.getJdbcServices();
    final SqlAstTranslator<JdbcSelect> translator = jdbcServices.getJdbcEnvironment().getSqlAstTranslatorFactory().buildSelectTranslator(factory, statement);
    final JdbcParameterBindings jdbcParameterBindings = SqmUtil.createJdbcParameterBindings(executionContext.getQueryParameterBindings(), domainParameterXref, SqmUtil.generateJdbcParamsXref(domainParameterXref, sqmConverter), factory.getRuntimeMetamodels().getMappingMetamodel(), navigablePath -> sqmConverter.getMutatingTableGroup(), new SqmParameterMappingModelResolutionAccess() {

        @Override
        @SuppressWarnings("unchecked")
        public <T> MappingModelExpressible<T> getResolvedMappingModelType(SqmParameter<T> parameter) {
            return (MappingModelExpressible<T>) paramTypeResolutions.get(parameter);
        }
    }, executionContext.getSession());
    final JdbcSelect select = translator.translate(jdbcParameterBindings, executionContext.getQueryOptions());
    executionContext.getSession().autoFlushIfRequired(select.getAffectedTableNames());
    List<Object> list = jdbcServices.getJdbcSelectExecutor().list(select, jdbcParameterBindings, SqmJdbcExecutionContextAdapter.omittingLockingAndPaging(executionContext), row -> row[0], ListResultsConsumer.UniqueSemantic.NONE);
    return ((Number) list.get(0)).intValue();
}

Example 3 with SqlAstProcessingState

use of org.hibernate.sql.ast.spi.SqlAstProcessingState in project hibernate-orm by hibernate.

the class BaseSqmToSqlAstConverter method visitQuerySpec.

@Override
public QuerySpec visitQuerySpec(SqmQuerySpec<?> sqmQuerySpec) {
    final boolean topLevel = getProcessingStateStack().isEmpty();
    final QuerySpec sqlQuerySpec = new QuerySpec(topLevel, sqmQuerySpec.getFromClause().getNumberOfRoots());
    final SqmSelectClause selectClause = sqmQuerySpec.getSelectClause();
    final Predicate originalAdditionalRestrictions = additionalRestrictions;
    additionalRestrictions = null;
    final boolean trackAliasedNodePositions;
    if (trackSelectionsForGroup) {
        trackAliasedNodePositions = true;
    } else if (sqmQuerySpec.getOrderByClause() != null && sqmQuerySpec.getOrderByClause().hasPositionalSortItem()) {
        trackAliasedNodePositions = true;
    } else if (sqmQuerySpec.hasPositionalGroupItem()) {
        trackAliasedNodePositions = true;
    } else {
        // Since JPA Criteria queries can use the same expression object in order or group by items,
        // we need to track the positions to be able to replace the expression in the items with alias references
        // Also see #resolveGroupOrOrderByExpression for more details
        trackAliasedNodePositions = statement.getQuerySource() == SqmQuerySource.CRITERIA && (sqmQuerySpec.getOrderByClause() != null || !sqmQuerySpec.getGroupByClauseExpressions().isEmpty());
    }
    final SqlAstProcessingState processingState;
    if (trackAliasedNodePositions) {
        processingState = new SqlAstQueryPartProcessingStateImpl(sqlQuerySpec, getCurrentProcessingState(), this, r -> new SqmAliasedNodePositionTracker(r, selectClause.getSelections()), currentClauseStack::getCurrent, deduplicateSelectionItems);
    } else {
        processingState = new SqlAstQueryPartProcessingStateImpl(sqlQuerySpec, getCurrentProcessingState(), this, currentClauseStack::getCurrent, deduplicateSelectionItems);
    }
    final SqmQueryPart<?> sqmQueryPart = currentSqmQueryPart;
    final boolean originalDeduplicateSelectionItems = deduplicateSelectionItems;
    currentSqmQueryPart = sqmQuerySpec;
    // In sub-queries, we can never deduplicate the selection items as that might change semantics
    deduplicateSelectionItems = false;
    pushProcessingState(processingState);
    queryTransformers.push(new ArrayList<>());
    try {
        // we want to visit the from-clause first
        visitFromClause(sqmQuerySpec.getFromClause());
        visitSelectClause(selectClause);
        final SqmWhereClause whereClause = sqmQuerySpec.getWhereClause();
        if (whereClause != null) {
            sqlQuerySpec.applyPredicate(visitWhereClause(whereClause.getPredicate()));
        }
        sqlQuerySpec.setGroupByClauseExpressions(visitGroupByClause(sqmQuerySpec.getGroupByClauseExpressions()));
        if (sqmQuerySpec.getHavingClausePredicate() != null) {
            sqlQuerySpec.setHavingClauseRestrictions(visitHavingClause(sqmQuerySpec.getHavingClausePredicate()));
        }
        visitOrderByOffsetAndFetch(sqmQuerySpec, sqlQuerySpec);
        if (topLevel && statement instanceof SqmSelectStatement<?>) {
            if (orderByFragments != null) {
                orderByFragments.forEach(entry -> entry.getKey().apply(sqlQuerySpec, entry.getValue(), this));
                orderByFragments = null;
            }
            applyCollectionFilterPredicates(sqlQuerySpec);
        }
        QuerySpec finalQuerySpec = sqlQuerySpec;
        for (QueryTransformer transformer : queryTransformers.getCurrent()) {
            finalQuerySpec = transformer.transform(cteContainer, finalQuerySpec, this);
        }
        return finalQuerySpec;
    } finally {
        if (additionalRestrictions != null) {
            sqlQuerySpec.applyPredicate(additionalRestrictions);
        }
        additionalRestrictions = originalAdditionalRestrictions;
        popProcessingStateStack();
        queryTransformers.pop();
        currentSqmQueryPart = sqmQueryPart;
        deduplicateSelectionItems = originalDeduplicateSelectionItems;
    }
}

Example 4 with SqlAstProcessingState

use of org.hibernate.sql.ast.spi.SqlAstProcessingState in project hibernate-orm by hibernate.

the class BaseSqmToSqlAstConverter method visitSetClause.

@Override
public List<Assignment> visitSetClause(SqmSetClause setClause) {
    final List<Assignment> assignments = new ArrayList<>(setClause.getAssignments().size());
    for (SqmAssignment sqmAssignment : setClause.getAssignments()) {
        final List<ColumnReference> targetColumnReferences = new ArrayList<>();
        pushProcessingState(new SqlAstProcessingStateImpl(getCurrentProcessingState(), this, getCurrentClauseStack()::getCurrent) {

            @Override
            public Expression resolveSqlExpression(String key, Function<SqlAstProcessingState, Expression> creator) {
                final Expression expression = getParentState().getSqlExpressionResolver().resolveSqlExpression(key, creator);
                assert expression instanceof ColumnReference;
                targetColumnReferences.add((ColumnReference) expression);
                return expression;
            }
        }, getFromClauseIndex());
        final SqmPathInterpretation<?> assignedPathInterpretation;
        try {
            assignedPathInterpretation = (SqmPathInterpretation<?>) sqmAssignment.getTargetPath().accept(this);
        } finally {
            popProcessingStateStack();
        }
        inferrableTypeAccessStack.push(assignedPathInterpretation::getExpressionType);
        // final List<ColumnReference> valueColumnReferences = new ArrayList<>();
        pushProcessingState(new SqlAstProcessingStateImpl(getCurrentProcessingState(), this, getCurrentClauseStack()::getCurrent) {

            @Override
            public Expression resolveSqlExpression(String key, Function<SqlAstProcessingState, Expression> creator) {
                final Expression expression = getParentState().getSqlExpressionResolver().resolveSqlExpression(key, creator);
                assert expression instanceof ColumnReference;
                // valueColumnReferences.add( (ColumnReference) expression );
                return expression;
            }
        }, getFromClauseIndex());
        try {
            final SqmExpression<?> assignmentValue = sqmAssignment.getValue();
            final SqmParameter<?> assignmentValueParameter = getSqmParameter(assignmentValue);
            if (assignmentValueParameter != null) {
                consumeSqmParameter(assignmentValueParameter, assignedPathInterpretation.getExpressionType(), (index, jdbcParameter) -> assignments.add(new Assignment(targetColumnReferences.get(index), jdbcParameter)));
            } else {
                final Expression valueExpression = (Expression) assignmentValue.accept(this);
                final int valueExprJdbcCount = getKeyExpressible(valueExpression.getExpressionType()).getJdbcTypeCount();
                final int assignedPathJdbcCount = getKeyExpressible(assignedPathInterpretation.getExpressionType()).getJdbcTypeCount();
                if (valueExprJdbcCount != assignedPathJdbcCount) {
                    SqlTreeCreationLogger.LOGGER.debugf("JDBC type count does not match in UPDATE assignment between the assigned-path and the assigned-value; " + "this will likely lead to problems executing the query");
                }
                assert assignedPathJdbcCount == valueExprJdbcCount;
                for (ColumnReference columnReference : targetColumnReferences) {
                    assignments.add(new Assignment(columnReference, valueExpression));
                }
            }
        } finally {
            popProcessingStateStack();
            inferrableTypeAccessStack.pop();
        }
    }
    return assignments;
}

Example 5 with SqlAstProcessingState

use of org.hibernate.sql.ast.spi.SqlAstProcessingState in project hibernate-orm by hibernate.

the class BaseSqmToSqlAstConverter method visitSelection.

@Override
public Void visitSelection(SqmSelection<?> sqmSelection) {
    final List<Map.Entry<String, DomainResultProducer<?>>> resultProducers;
    final SqmSelectableNode<?> selectionNode = sqmSelection.getSelectableNode();
    if (selectionNode instanceof SqmJpaCompoundSelection<?>) {
        final SqmJpaCompoundSelection<?> selectableNode = (SqmJpaCompoundSelection<?>) selectionNode;
        resultProducers = new ArrayList<>(selectableNode.getSelectionItems().size());
        for (SqmSelectableNode<?> selectionItem : selectableNode.getSelectionItems()) {
            if (selectionItem instanceof SqmPath<?>) {
                prepareForSelection((SqmPath<?>) selectionItem);
            }
            resultProducers.add(new AbstractMap.SimpleEntry<>(selectionItem.getAlias(), (DomainResultProducer<?>) selectionItem.accept(this)));
        }
    } else {
        if (selectionNode instanceof SqmPath<?>) {
            prepareForSelection((SqmPath<?>) selectionNode);
        }
        resultProducers = Collections.singletonList(new AbstractMap.SimpleEntry<>(sqmSelection.getAlias(), (DomainResultProducer<?>) selectionNode.accept(this)));
    }
    final Stack<SqlAstProcessingState> processingStateStack = getProcessingStateStack();
    final boolean needsDomainResults = domainResults != null && currentClauseContributesToTopLevelSelectClause();
    final boolean collectDomainResults;
    if (processingStateStack.depth() == 1) {
        collectDomainResults = needsDomainResults;
    } else {
        final SqlAstProcessingState current = processingStateStack.getCurrent();
        // Since we only want to create domain results for the first/left-most query spec within query groups,
        // we have to check if the current query spec is the left-most.
        // This is the case when all upper level in-flight query groups are still empty
        collectDomainResults = needsDomainResults && processingStateStack.findCurrentFirst(processingState -> {
            if (!(processingState instanceof SqlAstQueryPartProcessingState)) {
                return Boolean.FALSE;
            }
            if (processingState == current) {
                return null;
            }
            final QueryPart part = ((SqlAstQueryPartProcessingState) processingState).getInflightQueryPart();
            if (part instanceof QueryGroup) {
                if (((QueryGroup) part).getQueryParts().isEmpty()) {
                    return null;
                }
            }
            return Boolean.FALSE;
        }) == null;
    }
    // arguments
    if (collectDomainResults) {
        resultProducers.forEach(entry -> {
            if (!(entry.getValue() instanceof DynamicInstantiation<?>)) {
                currentSqlSelectionCollector().next();
            }
            domainResults.add(entry.getValue().createDomainResult(entry.getKey(), this));
        });
    } else if (needsDomainResults) {
        // We just create domain results for the purpose of creating selections
        // This is necessary for top-level query specs within query groups to avoid cycles
        resultProducers.forEach(entry -> {
            if (!(entry.getValue() instanceof DynamicInstantiation<?>)) {
                currentSqlSelectionCollector().next();
            }
            entry.getValue().createDomainResult(entry.getKey(), this);
        });
    } else {
        resultProducers.forEach(entry -> {
            if (!(entry.getValue() instanceof DynamicInstantiation<?>)) {
                currentSqlSelectionCollector().next();
            }
            entry.getValue().applySqlSelections(this);
        });
    }
    return null;
}