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

Example 1 with SqmOrderByClause

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

the class SemanticQueryBuilder method visitQueryOrder.

protected void visitQueryOrder(SqmQueryPart<?> sqmQueryPart, HqlParser.QueryOrderContext ctx) {
    if (ctx == null) {
        return;
    }
    final SqmOrderByClause orderByClause;
    final HqlParser.OrderByClauseContext orderByClauseContext = (HqlParser.OrderByClauseContext) ctx.getChild(0);
    if (orderByClauseContext != null) {
        if (creationOptions.useStrictJpaCompliance() && processingStateStack.depth() > 1) {
            throw new StrictJpaComplianceViolation(StrictJpaComplianceViolation.Type.SUBQUERY_ORDER_BY);
        }
        orderByClause = visitOrderByClause(orderByClauseContext);
        sqmQueryPart.setOrderByClause(orderByClause);
    } else {
        orderByClause = null;
    }
    int currentIndex = 1;
    final HqlParser.LimitClauseContext limitClauseContext;
    if (currentIndex < ctx.getChildCount() && ctx.getChild(currentIndex) instanceof HqlParser.LimitClauseContext) {
        limitClauseContext = (HqlParser.LimitClauseContext) ctx.getChild(currentIndex++);
    } else {
        limitClauseContext = null;
    }
    final HqlParser.OffsetClauseContext offsetClauseContext;
    if (currentIndex < ctx.getChildCount() && ctx.getChild(currentIndex) instanceof HqlParser.OffsetClauseContext) {
        offsetClauseContext = (HqlParser.OffsetClauseContext) ctx.getChild(currentIndex++);
    } else {
        offsetClauseContext = null;
    }
    final HqlParser.FetchClauseContext fetchClauseContext;
    if (currentIndex < ctx.getChildCount() && ctx.getChild(currentIndex) instanceof HqlParser.FetchClauseContext) {
        fetchClauseContext = (HqlParser.FetchClauseContext) ctx.getChild(currentIndex++);
    } else {
        fetchClauseContext = null;
    }
    if (currentIndex != 1) {
        if (getCreationOptions().useStrictJpaCompliance()) {
            throw new StrictJpaComplianceViolation(StrictJpaComplianceViolation.Type.LIMIT_OFFSET_CLAUSE);
        }
        if (processingStateStack.depth() > 1 && orderByClause == null) {
            throw new SemanticException("limit, offset and fetch clause require an order-by clause when used in sub-query");
        }
        sqmQueryPart.setOffsetExpression(visitOffsetClause(offsetClauseContext));
        if (limitClauseContext == null) {
            sqmQueryPart.setFetchExpression(visitFetchClause(fetchClauseContext), visitFetchClauseType(fetchClauseContext));
        } else if (fetchClauseContext == null) {
            sqmQueryPart.setFetchExpression(visitLimitClause(limitClauseContext));
        } else {
            throw new SemanticException("Can't use both limit and fetch clause");
        }
    }
}

Example 2 with SqmOrderByClause

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

the class InverseDistributionWindowEmulation method generateSqmOrderedSetAggregateFunctionExpression.

@Override
public <T> SelfRenderingSqmOrderedSetAggregateFunction<T> generateSqmOrderedSetAggregateFunctionExpression(List<? extends SqmTypedNode<?>> arguments, SqmPredicate filter, SqmOrderByClause withinGroupClause, ReturnableType<T> impliedResultType, QueryEngine queryEngine, TypeConfiguration typeConfiguration) {
    return new SelfRenderingInverseDistributionFunction<>(arguments, filter, withinGroupClause, impliedResultType, queryEngine) {

        @Override
        public Expression convertToSqlAst(SqmToSqlAstConverter walker) {
            final Clause currentClause = walker.getCurrentClauseStack().getCurrent();
            if (currentClause == Clause.OVER) {
                return super.convertToSqlAst(walker);
            } else if (currentClause != Clause.SELECT) {
                throw new IllegalArgumentException("Can't emulate [" + getName() + "] in clause " + currentClause + ". Only the SELECT clause is supported!");
            }
            final ReturnableType<?> resultType = resolveResultType(walker.getCreationContext().getMappingMetamodel().getTypeConfiguration());
            List<SqlAstNode> arguments = resolveSqlAstArguments(getArguments(), walker);
            ArgumentsValidator argumentsValidator = getArgumentsValidator();
            if (argumentsValidator != null) {
                argumentsValidator.validateSqlTypes(arguments, getFunctionName());
            }
            List<SortSpecification> withinGroup;
            if (this.getWithinGroup() == null) {
                withinGroup = Collections.emptyList();
            } else {
                walker.getCurrentClauseStack().push(Clause.ORDER);
                try {
                    final List<SqmSortSpecification> sortSpecifications = this.getWithinGroup().getSortSpecifications();
                    withinGroup = new ArrayList<>(sortSpecifications.size());
                    for (SqmSortSpecification sortSpecification : sortSpecifications) {
                        final SortSpecification specification = (SortSpecification) walker.visitSortSpecification(sortSpecification);
                        if (specification != null) {
                            withinGroup.add(specification);
                        }
                    }
                } finally {
                    walker.getCurrentClauseStack().pop();
                }
            }
            final SelfRenderingFunctionSqlAstExpression function = new SelfRenderingOrderedSetAggregateFunctionSqlAstExpression(getFunctionName(), getRenderingSupport(), arguments, getFilter() == null ? null : (Predicate) getFilter().accept(walker), withinGroup, resultType, getMappingModelExpressible(walker, resultType));
            final Over<Object> windowFunction = new Over<>(function, new ArrayList<>(), Collections.emptyList());
            walker.registerQueryTransformer(new AggregateWindowEmulationQueryTransformer(windowFunction, withinGroup, null));
            return windowFunction;
        }
    };
}

Example 3 with SqmOrderByClause

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

the class HypotheticalSetWindowEmulation method generateSqmOrderedSetAggregateFunctionExpression.

@Override
public <T> SelfRenderingSqmOrderedSetAggregateFunction<T> generateSqmOrderedSetAggregateFunctionExpression(List<? extends SqmTypedNode<?>> arguments, SqmPredicate filter, SqmOrderByClause withinGroupClause, ReturnableType<T> impliedResultType, QueryEngine queryEngine, TypeConfiguration typeConfiguration) {
    return new SelfRenderingSqmOrderedSetAggregateFunction<>(this, this, arguments, filter, withinGroupClause, impliedResultType, getArgumentsValidator(), getReturnTypeResolver(), queryEngine.getCriteriaBuilder(), getName()) {

        @Override
        public Expression convertToSqlAst(SqmToSqlAstConverter walker) {
            final Clause currentClause = walker.getCurrentClauseStack().getCurrent();
            if (currentClause == Clause.OVER) {
                return super.convertToSqlAst(walker);
            } else if (currentClause != Clause.SELECT) {
                throw new IllegalArgumentException("Can't emulate [" + getName() + "] in clause " + currentClause + ". Only the SELECT clause is supported!");
            }
            final ReturnableType<?> resultType = resolveResultType(walker.getCreationContext().getMappingMetamodel().getTypeConfiguration());
            List<SqlAstNode> arguments = resolveSqlAstArguments(getArguments(), walker);
            ArgumentsValidator argumentsValidator = getArgumentsValidator();
            if (argumentsValidator != null) {
                argumentsValidator.validateSqlTypes(arguments, getFunctionName());
            }
            List<SortSpecification> withinGroup;
            if (this.getWithinGroup() == null) {
                withinGroup = Collections.emptyList();
            } else {
                walker.getCurrentClauseStack().push(Clause.ORDER);
                try {
                    final List<SqmSortSpecification> sortSpecifications = this.getWithinGroup().getSortSpecifications();
                    withinGroup = new ArrayList<>(sortSpecifications.size());
                    for (SqmSortSpecification sortSpecification : sortSpecifications) {
                        final SortSpecification specification = (SortSpecification) walker.visitSortSpecification(sortSpecification);
                        if (specification != null) {
                            withinGroup.add(specification);
                        }
                    }
                } finally {
                    walker.getCurrentClauseStack().pop();
                }
            }
            final SelfRenderingFunctionSqlAstExpression function = new SelfRenderingOrderedSetAggregateFunctionSqlAstExpression(getFunctionName(), getRenderingSupport(), Collections.emptyList(), getFilter() == null ? null : (Predicate) getFilter().accept(walker), Collections.emptyList(), resultType, getMappingModelExpressible(walker, resultType));
            final Over<Object> windowFunction = new Over<>(function, new ArrayList<>(), withinGroup);
            walker.registerQueryTransformer(new AggregateWindowEmulationQueryTransformer(windowFunction, withinGroup, arguments));
            return windowFunction;
        }
    };
}

Example 4 with SqmOrderByClause

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

the class SemanticQueryBuilder method visitGenericFunction.

@Override
public Object visitGenericFunction(HqlParser.GenericFunctionContext ctx) {
    final String originalFunctionName = visitGenericFunctionName(ctx.genericFunctionName());
    final String functionName = originalFunctionName.toLowerCase();
    if (creationOptions.useStrictJpaCompliance() && !JPA_STANDARD_FUNCTIONS.contains(functionName)) {
        throw new StrictJpaComplianceViolation("Encountered non-compliant non-standard function call [" + originalFunctionName + "], but strict JPA " + "compliance was requested; use JPA's FUNCTION(functionName[,...]) " + "syntax name instead", StrictJpaComplianceViolation.Type.FUNCTION_CALL);
    }
    final ParseTree argumentChild = ctx.getChild(2);
    final List<SqmTypedNode<?>> functionArguments;
    if (argumentChild instanceof HqlParser.GenericFunctionArgumentsContext) {
        functionArguments = (List<SqmTypedNode<?>>) argumentChild.accept(this);
    } else if ("*".equals(argumentChild.getText())) {
        functionArguments = Collections.singletonList(new SqmStar(getCreationContext().getNodeBuilder()));
    } else {
        functionArguments = emptyList();
    }
    final Boolean fromFirst = getFromFirst(ctx);
    final Boolean respectNulls = getRespectNullsClause(ctx);
    final SqmOrderByClause withinGroup = getWithinGroup(ctx);
    final SqmPredicate filterExpression = getFilterExpression(ctx);
    final boolean hasOverClause = ctx.getChild(ctx.getChildCount() - 1) instanceof HqlParser.OverClauseContext;
    SqmFunctionDescriptor functionTemplate = getFunctionDescriptor(functionName);
    if (functionTemplate == null) {
        FunctionKind functionKind = FunctionKind.NORMAL;
        if (withinGroup != null) {
            functionKind = FunctionKind.ORDERED_SET_AGGREGATE;
        } else if (hasOverClause) {
            functionKind = FunctionKind.WINDOW;
        } else if (filterExpression != null) {
            functionKind = FunctionKind.AGGREGATE;
        }
        functionTemplate = new NamedSqmFunctionDescriptor(functionName, true, null, StandardFunctionReturnTypeResolvers.invariant(resolveExpressibleTypeBasic(Object.class)), null, functionName, functionKind, null, SqlAstNodeRenderingMode.DEFAULT);
    } else {
        if (hasOverClause && functionTemplate.getFunctionKind() == FunctionKind.NORMAL) {
            throw new SemanticException("OVER clause is illegal for normal function: " + functionName);
        } else if (!hasOverClause && functionTemplate.getFunctionKind() == FunctionKind.WINDOW) {
            throw new SemanticException("OVER clause is mandatory for window-only function: " + functionName);
        }
        if (respectNulls != null) {
            switch(functionName) {
                case "lag":
                case "lead":
                case "first_value":
                case "last_value":
                case "nth_value":
                    break;
                default:
                    throw new SemanticException("RESPECT/IGNORE NULLS is illegal for function: " + functionName);
            }
        }
        if (fromFirst != null && !"nth_value".equals(functionName)) {
            throw new SemanticException("FROM FIRST/LAST is illegal for function: " + functionName);
        }
    }
    final SqmFunction<?> function;
    switch(functionTemplate.getFunctionKind()) {
        case ORDERED_SET_AGGREGATE:
            function = functionTemplate.generateOrderedSetAggregateSqmExpression(functionArguments, filterExpression, withinGroup, null, creationContext.getQueryEngine(), creationContext.getJpaMetamodel().getTypeConfiguration());
            break;
        case AGGREGATE:
            function = functionTemplate.generateAggregateSqmExpression(functionArguments, filterExpression, null, creationContext.getQueryEngine(), creationContext.getJpaMetamodel().getTypeConfiguration());
            break;
        case WINDOW:
            function = functionTemplate.generateWindowSqmExpression(functionArguments, filterExpression, null, null, null, creationContext.getQueryEngine(), creationContext.getJpaMetamodel().getTypeConfiguration());
            break;
        default:
            if (filterExpression != null) {
                throw new ParsingException("Illegal use of a FILTER clause for non-aggregate function: " + originalFunctionName);
            }
            function = functionTemplate.generateSqmExpression(functionArguments, null, creationContext.getQueryEngine(), creationContext.getJpaMetamodel().getTypeConfiguration());
            break;
    }
    return applyOverClause(ctx, function);
}

Example 5 with SqmOrderByClause

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

the class SemanticQueryBuilder method visitListaggFunction.

@Override
public Object visitListaggFunction(ListaggFunctionContext ctx) {
    if (creationOptions.useStrictJpaCompliance()) {
        throw new StrictJpaComplianceViolation("Encountered non-compliant non-standard function call [listagg], but strict JPA " + "compliance was requested; use JPA's FUNCTION(functionName[,...]) " + "syntax name instead", StrictJpaComplianceViolation.Type.FUNCTION_CALL);
    }
    final SqmFunctionDescriptor functionTemplate = getFunctionDescriptor("listagg");
    if (functionTemplate == null) {
        throw new SemanticException("The listagg function was not registered for the dialect!");
    }
    final int argumentStartIndex;
    final ParseTree thirdChild = ctx.getChild(2);
    final boolean distinct;
    if (thirdChild instanceof TerminalNode) {
        distinct = true;
        argumentStartIndex = 3;
    } else {
        distinct = false;
        argumentStartIndex = 2;
    }
    final SqmExpression<?> firstArgument = (SqmExpression<?>) ctx.getChild(argumentStartIndex).accept(this);
    final SqmExpression<?> secondArgument = (SqmExpression<?>) ctx.getChild(argumentStartIndex + 2).accept(this);
    final ParseTree overflowCtx = ctx.getChild(argumentStartIndex + 3);
    final List<SqmTypedNode<?>> functionArguments = new ArrayList<>(3);
    if (distinct) {
        functionArguments.add(new SqmDistinct<>(firstArgument, creationContext.getNodeBuilder()));
    } else {
        functionArguments.add(firstArgument);
    }
    if (overflowCtx instanceof OnOverflowClauseContext) {
        if (overflowCtx.getChildCount() > 3) {
            // ON OVERFLOW TRUNCATE
            final TerminalNode countNode = (TerminalNode) overflowCtx.getChild(overflowCtx.getChildCount() - 2);
            final boolean withCount = countNode.getSymbol().getType() == HqlParser.WITH;
            final SqmExpression<?> fillerExpression;
            if (overflowCtx.getChildCount() == 6) {
                fillerExpression = (SqmExpression<?>) overflowCtx.getChild(3).accept(this);
            } else {
                // The SQL standard says the default is three periods `...`
                fillerExpression = new SqmLiteral<>("...", secondArgument.getNodeType(), secondArgument.nodeBuilder());
            }
            // noinspection unchecked,rawtypes
            functionArguments.add(new SqmOverflow(secondArgument, fillerExpression, withCount));
        } else {
            // ON OVERFLOW ERROR
            functionArguments.add(new SqmOverflow<>(secondArgument, null, false));
        }
    } else {
        functionArguments.add(secondArgument);
    }
    final SqmOrderByClause withinGroup = getWithinGroup(ctx);
    final SqmPredicate filterExpression = getFilterExpression(ctx);
    return applyOverClause(ctx, functionTemplate.generateOrderedSetAggregateSqmExpression(functionArguments, filterExpression, withinGroup, null, creationContext.getQueryEngine(), creationContext.getJpaMetamodel().getTypeConfiguration()));
}