Package com.facebook.presto.metadata

Examples of com.facebook.presto.metadata.ColumnHandle

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                new PlanFragmentId(planId),
                new TableScanNode(
                        tableScanNodeId,
                        new TableHandle("test", new TestingTableHandle()),
                        ImmutableList.of(symbol),
                        ImmutableMap.of(symbol, new ColumnHandle("test", new TestingColumnHandle("column"))),
                        null,
                        Optional.<GeneratedPartitions>absent()),
                ImmutableMap.<Symbol, Type>of(symbol, VARCHAR),
                PlanDistribution.SOURCE,
                tableScanNodeId,
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                new PlanFragmentId("fragment"),
                new TableScanNode(
                        tableScanNodeId,
                        new TableHandle("test", new TestingTableHandle()),
                        ImmutableList.of(symbol),
                        ImmutableMap.of(symbol, new ColumnHandle("test", new TestingColumnHandle("column"))),
                        null,
                        Optional.<GeneratedPartitions>absent()),
                ImmutableMap.<Symbol, Type>of(symbol, VARCHAR),
                PlanDistribution.SOURCE,
                tableScanNodeId,
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                new PlanFragmentId("fragment"),
                new TableScanNode(
                        tableScanNodeId,
                        new TableHandle("test", new TestingTableHandle()),
                        ImmutableList.of(symbol),
                        ImmutableMap.of(symbol, new ColumnHandle("test", new TestingColumnHandle("column"))),
                        null,
                        Optional.<GeneratedPartitions>absent()),
                ImmutableMap.<Symbol, Type>of(symbol, VARCHAR),
                PlanDistribution.SOURCE,
                tableScanNodeId,
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        // lookup the columns
        Map<String, ColumnHandle> allColumnHandles = metadata.getColumnHandles(tableHandle);
        ImmutableList.Builder<ColumnHandle> columnHandlesBuilder = ImmutableList.builder();
        ImmutableList.Builder<Type> columnTypesBuilder = ImmutableList.builder();
        for (String columnName : columnNames) {
            ColumnHandle columnHandle = allColumnHandles.get(columnName);
            checkArgument(columnHandle != null, "Table %s does not have a column %s", tableName, columnName);
            columnHandlesBuilder.add(columnHandle);
            ColumnMetadata columnMetadata = metadata.getColumnMetadata(tableHandle, columnHandle);
            columnTypesBuilder.add(columnMetadata.getType());
        }
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        // TODO: discover columns lazily based on where they are needed (to support datasources that can't enumerate all tables)
        ImmutableList.Builder<Field> fields = ImmutableList.builder();
        for (ColumnMetadata column : tableMetadata.getColumns()) {
            Field field = Field.newQualified(table.getName(), Optional.of(column.getName()), column.getType(), column.isHidden());
            fields.add(field);
            ColumnHandle columnHandle = columnHandles.get(column.getName());
            checkArgument(columnHandle != null, "Unknown field %s", field);
            analysis.setColumn(field, columnHandle);
        }

        analysis.registerTable(table, tableHandle.get());
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        if (tupleDomain.isNone()) {
            return FALSE_LITERAL;
        }
        ImmutableList.Builder<Expression> conjunctBuilder = ImmutableList.builder();
        for (Map.Entry<ColumnHandle, Domain> entry : tupleDomain.getDomains().entrySet()) {
            ColumnHandle columnHandle = entry.getKey();
            checkArgument(symbolTranslationMap.containsKey(columnHandle), "Unable to convert TupleDomain to Expression b/c don't know Symbol for ColumnHandle %s", columnHandle);
            Symbol symbol = symbolTranslationMap.get(columnHandle);
            QualifiedNameReference reference = new QualifiedNameReference(symbol.toQualifiedName());
            Type type = symbolTypes.get(symbol);
            conjunctBuilder.add(toPredicate(entry.getValue(), reference, type));
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            return type;
        }

        private ColumnHandle checkedColumnHandleLookup(Symbol symbol)
        {
            ColumnHandle columnHandle = columnHandles.get(symbol);
            checkArgument(columnHandle != null, "ColumnHandles is missing info for symbol: %s", symbol);
            return columnHandle;
        }
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            }
            node = normalizeSimpleComparison(node);

            Symbol symbol = Symbol.fromQualifiedName(((QualifiedNameReference) node.getLeft()).getName());
            Type columnType = checkedTypeLookup(symbol);
            ColumnHandle columnHandle = checkedColumnHandleLookup(symbol);
            Object value = LiteralInterpreter.evaluate(metadata, session, node.getRight());

            // Handle the cases where implicit coercions can happen in comparisons
            // TODO: how to abstract this out
            if (value instanceof Double && columnType.equals(BIGINT)) {
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                return super.visitIsNullPredicate(node, complement);
            }

            Symbol symbol = Symbol.fromQualifiedName(((QualifiedNameReference) node.getValue()).getName());
            Type columnType = checkedTypeLookup(symbol);
            ColumnHandle columnHandle = checkedColumnHandleLookup(symbol);

            Domain domain = complementIfNecessary(Domain.onlyNull(wrap(columnType.getJavaType())), complement);
            return new ExtractionResult(
                    TupleDomain.withColumnDomains(ImmutableMap.<ColumnHandle, Domain>of(columnHandle, domain)),
                    TRUE_LITERAL);
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                return super.visitIsNotNullPredicate(node, complement);
            }

            Symbol symbol = Symbol.fromQualifiedName(((QualifiedNameReference) node.getValue()).getName());
            Type columnType = checkedTypeLookup(symbol);
            ColumnHandle columnHandle = checkedColumnHandleLookup(symbol);

            Domain domain = complementIfNecessary(Domain.notNull(wrap(columnType.getJavaType())), complement);
            return new ExtractionResult(
                    TupleDomain.withColumnDomains(ImmutableMap.<ColumnHandle, Domain>of(columnHandle, domain)),
                    TRUE_LITERAL);
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