Package com.facebook.presto.sql.tree

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

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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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                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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                throw new UnsupportedOperationException("not yet implemented: non-default precision");
            }

            switch (node.getType()) {
                case DATE:
                    return new FunctionCall(new QualifiedName("current_date"), ImmutableList.<Expression>of());
                case TIME:
                    return new FunctionCall(new QualifiedName("current_time"), ImmutableList.<Expression>of());
                case LOCALTIME:
                    return new FunctionCall(new QualifiedName("localtime"), ImmutableList.<Expression>of());
                case TIMESTAMP:
                    return new FunctionCall(new QualifiedName("current_timestamp"), ImmutableList.<Expression>of());
                case LOCALTIMESTAMP:
                    return new FunctionCall(new QualifiedName("localtimestamp"), ImmutableList.<Expression>of());
                default:
                    throw new UnsupportedOperationException("not yet implemented: " + node.getType());
            }
        }
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        {
            Expression value = treeRewriter.rewrite(node.getExpression(), context);

            switch (node.getField()) {
                case YEAR:
                    return new FunctionCall(new QualifiedName("year"), ImmutableList.of(value));
                case QUARTER:
                    return new FunctionCall(new QualifiedName("quarter"), ImmutableList.of(value));
                case MONTH:
                    return new FunctionCall(new QualifiedName("month"), ImmutableList.of(value));
                case WEEK:
                    return new FunctionCall(new QualifiedName("week"), ImmutableList.of(value));
                case DAY:
                case DAY_OF_MONTH:
                    return new FunctionCall(new QualifiedName("day"), ImmutableList.of(value));
                case DAY_OF_WEEK:
                case DOW:
                    return new FunctionCall(new QualifiedName("day_of_week"), ImmutableList.of(value));
                case DAY_OF_YEAR:
                case DOY:
                    return new FunctionCall(new QualifiedName("day_of_year"), ImmutableList.of(value));
                case HOUR:
                    return new FunctionCall(new QualifiedName("hour"), ImmutableList.of(value));
                case MINUTE:
                    return new FunctionCall(new QualifiedName("minute"), ImmutableList.of(value));
                case SECOND:
                    return new FunctionCall(new QualifiedName("second"), ImmutableList.of(value));
                case TIMEZONE_MINUTE:
                    return new FunctionCall(new QualifiedName("timezone_minute"), ImmutableList.of(value));
                case TIMEZONE_HOUR:
                    return new FunctionCall(new QualifiedName("timezone_hour"), ImmutableList.of(value));
            }

            throw new UnsupportedOperationException("not yet implemented: " + node.getField());
        }
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    {
        List<Partition> partitions = splitManager.getPartitions(tableHandle, Optional.<Map<ColumnHandle, Object>>of(ImmutableMap.<ColumnHandle, Object>of(dsColumnHandle, "foo")));
        assertEquals(partitions.size(), 2);

        // ds=3. No partition will match this.
        Expression nonMatching = new ComparisonExpression(Type.EQUAL, new QualifiedNameReference(new QualifiedName("ds")), new StringLiteral("3"));
        DataSource dataSource = splitManager.getSplits(session, tableHandle, BooleanLiteral.TRUE_LITERAL, nonMatching, Predicates.<Partition>alwaysTrue(), symbols);
        List<Split> splits = ImmutableList.copyOf(dataSource.getSplits());
        // no splits found
        assertEquals(splits.size(), 0);
    }
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    {
        List<Partition> partitions = splitManager.getPartitions(tableHandle, Optional.<Map<ColumnHandle, Object>>of(ImmutableMap.<ColumnHandle, Object>of(dsColumnHandle, "1")));
        assertEquals(partitions.size(), 2);

        // ds=1. One partition with three splits will match this.
        Expression nonMatching = new ComparisonExpression(Type.EQUAL, new QualifiedNameReference(new QualifiedName("ds")), new StringLiteral("1"));
        DataSource dataSource = splitManager.getSplits(session, tableHandle, BooleanLiteral.TRUE_LITERAL, nonMatching, Predicates.<Partition>alwaysTrue(), symbols);
        List<Split> splits = ImmutableList.copyOf(dataSource.getSplits());
        // three splits found
        assertEquals(splits.size(), 3);
    }
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    {
        List<Partition> partitions = splitManager.getPartitions(tableHandle, Optional.<Map<ColumnHandle, Object>>of(ImmutableMap.<ColumnHandle, Object>of(dsColumnHandle, "foo")));
        assertEquals(partitions.size(), 2);

        // foo=bar. Not a prunable column
        Expression nonMatching = new ComparisonExpression(Type.EQUAL, new QualifiedNameReference(new QualifiedName("foo")), new StringLiteral("bar"));
        DataSource dataSource = splitManager.getSplits(session, tableHandle, BooleanLiteral.TRUE_LITERAL, nonMatching, Predicates.<Partition>alwaysTrue(), symbols);
        List<Split> splits = ImmutableList.copyOf(dataSource.getSplits());
        // all splits found
        assertEquals(splits.size(), 4);
    }
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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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    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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                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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Related Classes of com.facebook.presto.sql.tree.QualifiedName

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  • com.facebook.presto.operator.aggregation.TestDoubleStdDevPopAggregation
  • com.facebook.presto.operator.aggregation.TestDoubleVarianceAggregation
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  • com.facebook.presto.operator.aggregation.TestLongStdDevAggregation
  • com.facebook.presto.operator.aggregation.TestLongStdDevPopAggregation
  • com.facebook.presto.operator.aggregation.TestLongVarianceAggregation
  • com.facebook.presto.operator.aggregation.TestLongVariancePopAggregation
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