Examples with SqmSelectQuery org.hibernate.query.sqm.tree.select.SqmSelectQuery used on opensource projects

Example 1 with SqmSelectQuery

use of org.hibernate.query.sqm.tree.select.SqmSelectQuery in project hibernate-orm by hibernate.

the class SemanticQueryBuilder method visitSetQueryGroup.

@Override
public SqmQueryGroup<Object> visitSetQueryGroup(HqlParser.SetQueryGroupContext ctx) {
    if (creationOptions.useStrictJpaCompliance()) {
        throw new StrictJpaComplianceViolation(StrictJpaComplianceViolation.Type.SET_OPERATIONS);
    }
    final List<ParseTree> children = ctx.children;
    // noinspection unchecked
    final SqmQueryPart<Object> firstQueryPart = (SqmQueryPart<Object>) children.get(0).accept(this);
    SqmQueryGroup<Object> queryGroup;
    if (firstQueryPart instanceof SqmQueryGroup<?>) {
        queryGroup = (SqmQueryGroup<Object>) firstQueryPart;
    } else {
        queryGroup = new SqmQueryGroup<>(firstQueryPart);
    }
    setCurrentQueryPart(queryGroup);
    final int size = children.size();
    final SqmCreationProcessingState firstProcessingState = processingStateStack.pop();
    for (int i = 1; i < size; i += 2) {
        final SetOperator operator = visitSetOperator((HqlParser.SetOperatorContext) children.get(i));
        final HqlParser.OrderedQueryContext simpleQueryCtx = (HqlParser.OrderedQueryContext) children.get(i + 1);
        final List<SqmQueryPart<Object>> queryParts;
        if (queryGroup.getSetOperator() == null || queryGroup.getSetOperator() == operator) {
            queryGroup.setSetOperator(operator);
            queryParts = queryGroup.queryParts();
        } else {
            queryParts = new ArrayList<>(size - (i >> 1));
            queryParts.add(queryGroup);
            queryGroup = new SqmQueryGroup<>(creationContext.getNodeBuilder(), operator, queryParts);
            setCurrentQueryPart(queryGroup);
        }
        final SqmQueryPart<Object> queryPart;
        try {
            processingStateStack.push(new SqmQuerySpecCreationProcessingStateStandardImpl(processingStateStack.getCurrent(), (SqmSelectQuery<?>) firstProcessingState.getProcessingQuery(), this));
            final List<ParseTree> subChildren = simpleQueryCtx.children;
            if (subChildren.get(0) instanceof HqlParser.QueryContext) {
                final SqmQuerySpec<Object> querySpec = new SqmQuerySpec<>(creationContext.getNodeBuilder());
                queryParts.add(querySpec);
                visitQuerySpecExpression((HqlParser.QuerySpecExpressionContext) simpleQueryCtx);
            } else {
                try {
                    final SqmSelectStatement<Object> selectStatement = new SqmSelectStatement<>(creationContext.getNodeBuilder());
                    processingStateStack.push(new SqmQuerySpecCreationProcessingStateStandardImpl(processingStateStack.getCurrent(), selectStatement, this));
                    queryPart = visitNestedQueryExpression((HqlParser.NestedQueryExpressionContext) simpleQueryCtx);
                    queryParts.add(queryPart);
                } finally {
                    processingStateStack.pop();
                }
            }
        } finally {
            processingStateStack.pop();
        }
    }
    processingStateStack.push(firstProcessingState);
    return queryGroup;
}

Example 2 with SqmSelectQuery

use of org.hibernate.query.sqm.tree.select.SqmSelectQuery in project hibernate-orm by hibernate.

the class QualifiedJoinPredicatePathConsumer method createBasePart.

@Override
protected SemanticPathPart createBasePart() {
    return new BaseLocalSequencePart() {

        @Override
        protected void validateAsRoot(SqmFrom<?, ?> pathRoot) {
            final SqmRoot<?> root = pathRoot.findRoot();
            final SqmRoot<?> joinRoot = sqmJoin.findRoot();
            if (root != joinRoot) {
                // The root of a path within a join condition doesn't have the same root as the current join we are processing.
                // The aim of this check is to prevent uses of different "spaces" i.e. `from A a, B b join b.id = a.id` would be illegal
                SqmCreationProcessingState processingState = getCreationState().getCurrentProcessingState();
                // First, we need to find out if the current join is part of current processing query
                final SqmQuery<?> currentProcessingQuery = processingState.getProcessingQuery();
                if (currentProcessingQuery instanceof SqmSelectQuery<?>) {
                    final SqmQuerySpec<?> querySpec = ((SqmSelectQuery<?>) currentProcessingQuery).getQuerySpec();
                    final SqmFromClause fromClause = querySpec.getFromClause();
                    // then the root of the processing path must be a root of one of the parent queries
                    if (fromClause != null && fromClause.getRoots().contains(joinRoot)) {
                        // It is allowed to use correlations from the same query
                        if (!(root instanceof SqmCorrelation<?, ?>) || !fromClause.getRoots().contains(root)) {
                            validateAsRootOnParentQueryClosure(pathRoot, root, processingState.getParentProcessingState());
                        }
                        return;
                    }
                }
                // in which case the path root is allowed to occur in the current processing query as root
                if (currentProcessingQuery instanceof SqmSubQuery<?>) {
                    validateAsRootOnParentQueryClosure(pathRoot, root, processingState);
                    return;
                }
                throw new SemanticException(String.format(Locale.ROOT, "SqmQualifiedJoin predicate referred to SqmRoot [`%s`] other than the join's root [`%s`]", pathRoot.getNavigablePath().getFullPath(), sqmJoin.getNavigablePath().getFullPath()));
            }
            super.validateAsRoot(pathRoot);
        }

        private void validateAsRootOnParentQueryClosure(SqmFrom<?, ?> pathRoot, SqmRoot<?> root, SqmCreationProcessingState processingState) {
            while (processingState != null) {
                final SqmQuery<?> processingQuery = processingState.getProcessingQuery();
                if (processingQuery instanceof SqmSelectQuery<?>) {
                    final SqmQuerySpec<?> querySpec = ((SqmSelectQuery<?>) processingQuery).getQuerySpec();
                    final SqmFromClause fromClause = querySpec.getFromClause();
                    // i.e. `from A a, B b join b.id = a.id` would be illegal
                    if (fromClause != null && fromClause.getRoots().contains(root)) {
                        super.validateAsRoot(pathRoot);
                        return;
                    }
                }
                processingState = processingState.getParentProcessingState();
            }
            throw new SemanticException(String.format(Locale.ROOT, "SqmQualifiedJoin predicate referred to SqmRoot [`%s`] other than the join's root [`%s`]", pathRoot.getNavigablePath().getFullPath(), sqmJoin.getNavigablePath().getFullPath()));
        }
    };
}