Package com.facebook.presto.sql.tree

Examples of com.facebook.presto.sql.tree.QualifiedName


    }

    @Override
    public InternalAggregationFunction getFunction()
    {
        return metadata.resolveFunction(new QualifiedName("stddev_pop"), ImmutableList.of(StandardTypes.BIGINT), false).getAggregationFunction();
    }
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    }

    @Override
    public InternalAggregationFunction getFunction()
    {
        return metadata.resolveFunction(new QualifiedName("stddev_samp"), ImmutableList.of(StandardTypes.BIGINT), false).getAggregationFunction();
    }
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    }

    @Override
    public InternalAggregationFunction getFunction()
    {
        return metadata.resolveFunction(new QualifiedName("var_samp"), ImmutableList.of(StandardTypes.DOUBLE), false).getAggregationFunction();
    }
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    }

    @Override
    public InternalAggregationFunction getFunction()
    {
        return metadata.resolveFunction(new QualifiedName("var_pop"), ImmutableList.of(StandardTypes.DOUBLE), false).getAggregationFunction();
    }
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    }

    @Override
    public InternalAggregationFunction getFunction()
    {
        return metadata.resolveFunction(new QualifiedName("stddev_pop"), ImmutableList.of(StandardTypes.DOUBLE), false).getAggregationFunction();
    }
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                return true;
            }

            if (argument instanceof QualifiedNameReference) {
                QualifiedNameReference qualifiedNameReference = (QualifiedNameReference) argument;
                QualifiedName qualifiedName = qualifiedNameReference.getName();
                Symbol argumentSymbol = Symbol.fromQualifiedName(qualifiedName);
                Expression argumentExpression = projectNode.getOutputMap().get(argumentSymbol);
                return (argumentExpression instanceof Literal) && (!(argumentExpression instanceof NullLiteral));
            }
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                FieldOrExpression orderByExpression = null;
                if (expression instanceof QualifiedNameReference && !((QualifiedNameReference) expression).getName().getPrefix().isPresent()) {
                    // if this is a simple name reference, try to resolve against output columns

                    QualifiedName name = ((QualifiedNameReference) expression).getName();
                    Collection<Expression> expressions = byAlias.get(name);
                    if (expressions.size() > 1) {
                        throw new SemanticException(AMBIGUOUS_ATTRIBUTE, expression, "'%s' in ORDER BY is ambiguous", name.getSuffix());
                    }
                    else if (expressions.size() == 1) {
                        orderByExpression = new FieldOrExpression(Iterables.getOnlyElement(expressions));
                    }
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        }

        if (type.equals(DOUBLE)) {
            Double value = (Double) object;
            if (value.isNaN()) {
                return new FunctionCall(new QualifiedName("nan"), ImmutableList.<Expression>of());
            }
            else if (value == Double.NEGATIVE_INFINITY) {
                return new NegativeExpression(new FunctionCall(new QualifiedName("infinity"), ImmutableList.<Expression>of()));
            }
            else if (value == Double.POSITIVE_INFINITY) {
                return new FunctionCall(new QualifiedName("infinity"), ImmutableList.<Expression>of());
            }
            else {
                return new DoubleLiteral(object.toString());
            }
        }

        if (type.equals(VARCHAR)) {
            if (object instanceof Slice) {
                return new StringLiteral(((Slice) object).toString(UTF_8));
            }

            if (object instanceof String) {
                return new StringLiteral((String) object);
            }
        }

        if (type.equals(BOOLEAN)) {
            return new BooleanLiteral(object.toString());
        }

        Signature signature = FunctionRegistry.getMagicLiteralFunctionSignature(type);
        Expression rawLiteral = toExpression(object, FunctionRegistry.type(type.getJavaType()));
        return new FunctionCall(new QualifiedName(signature.getName()), ImmutableList.of(rawLiteral));
    }
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    protected TupleDescriptor visitShowTables(ShowTables showTables, AnalysisContext context)
    {
        String catalogName = session.getCatalog();
        String schemaName = session.getSchema();

        QualifiedName schema = showTables.getSchema();
        if (schema != null) {
            List<String> parts = schema.getParts();
            if (parts.size() > 2) {
                throw new SemanticException(INVALID_SCHEMA_NAME, showTables, "too many parts in schema name: %s", schema);
            }
            if (parts.size() == 2) {
                catalogName = parts.get(0);
            }
            schemaName = schema.getSuffix();
        }

        // TODO: throw SemanticException if schema does not exist

        Expression predicate = equal(nameReference("table_schema"), new StringLiteral(schemaName));
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        }

        @Override
        protected Boolean visitQualifiedNameReference(QualifiedNameReference node, Void context)
        {
            QualifiedName name = node.getName();

            List<Field> fields = tupleDescriptor.resolveFields(name);
            Preconditions.checkState(!fields.isEmpty(), "No fields for name '%s'", name);
            Preconditions.checkState(fields.size() <= 1, "Found more than one field for name '%s': %s", name, fields);
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