Package com.facebook.presto.spi

Examples of com.facebook.presto.spi.ColumnMetadata

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    private void doCreateTable()
            throws InterruptedException
    {
        // begin creating the table
        List<ColumnMetadata> columns = ImmutableList.<ColumnMetadata>builder()
                .add(new ColumnMetadata("id", BIGINT, 1, false))
                .add(new ColumnMetadata("t_string", VARCHAR, 2, false))
                .add(new ColumnMetadata("t_bigint", BIGINT, 3, false))
                .add(new ColumnMetadata("t_double", DOUBLE, 4, false))
                .add(new ColumnMetadata("t_boolean", BOOLEAN, 5, false))
                .build();

        ConnectorTableMetadata tableMetadata = new ConnectorTableMetadata(temporaryCreateTable, columns, tableOwner);
        ConnectorOutputTableHandle outputHandle = metadata.beginCreateTable(SESSION, tableMetadata);
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    }

    private static void assertReadFields(RecordCursor cursor, List<ColumnMetadata> schema)
    {
        for (int columnIndex = 0; columnIndex < schema.size(); columnIndex++) {
            ColumnMetadata column = schema.get(columnIndex);
            if (!cursor.isNull(columnIndex)) {
                if (BOOLEAN.equals(column.getType())) {
                    cursor.getBoolean(columnIndex);
                }
                else if (BIGINT.equals(column.getType())) {
                    cursor.getLong(columnIndex);
                }
                else if (DOUBLE.equals(column.getType())) {
                    cursor.getDouble(columnIndex);
                }
                else if (VARCHAR.equals(column.getType()) || VARBINARY.equals(column.getType())) {
                    try {
                        cursor.getSlice(columnIndex);
                    }
                    catch (RuntimeException e) {
                        throw new RuntimeException("column " + column, e);
                    }
                }
                else if (TIMESTAMP.equals(column.getType())) {
                    cursor.getLong(columnIndex);
                }
                else {
                    fail("Unknown primitive type " + columnIndex);
                }
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    }

    private static void assertPrimitiveField(Map<String, ColumnMetadata> map, int position, String name, Type type, boolean partitionKey)
    {
        assertTrue(map.containsKey(name));
        ColumnMetadata column = map.get(name);
        assertEquals(column.getOrdinalPosition(), position);
        assertEquals(column.getType(), type, name);
        assertEquals(column.isPartitionKey(), partitionKey, name);
    }
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        TableMetadata tableMetadata = TABLES.get(informationSchemaTableHandle.getSchemaTableName());

        checkArgument(columnHandle instanceof InformationSchemaColumnHandle, "columnHandle is not an instance of InformationSchemaColumnHandle");
        String columnName = ((InformationSchemaColumnHandle) columnHandle).getColumnName();

        ColumnMetadata columnMetadata = findColumnMetadata(tableMetadata, columnName);
        checkArgument(columnMetadata != null, "Column %s on table %s does not exist", columnName, tableMetadata.getTable());
        return columnMetadata;
    }
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        ImmutableMap.Builder<SchemaTableName, List<ColumnMetadata>> tableColumns = ImmutableMap.builder();
        for (SchemaTableName tableName : listTables(prefix.getSchemaName())) {
            int position = 1;
            ImmutableList.Builder<ColumnMetadata> columns = ImmutableList.builder();
            for (ColumnMetadata column : tables.get(tableName.getTableName()).getColumns()) {
                columns.add(new ColumnMetadata(column.getName(), column.getType(), position, false));
                position++;
            }
            tableColumns.put(tableName, columns.build());
        }
        return tableColumns.build();
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            // Create the destination table
            ImmutableList.Builder<ColumnMetadata> columns = ImmutableList.builder();
            for (int i = 0; i < plan.getDescriptor().getFields().size(); i++) {
                Field field = plan.getDescriptor().getFields().get(i);
                String name = field.getName().or("_field" + i);
                ColumnMetadata columnMetadata = new ColumnMetadata(name, field.getType().getColumnType(), i, false);
                columns.add(columnMetadata);
            }
            TableMetadata tableMetadata = new TableMetadata(destination.asSchemaTableName(), columns.build());
            targetTable = metadata.createTable(destination.getCatalogName(), tableMetadata);
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        ImmutableMap.Builder<SchemaTableName, List<ColumnMetadata>> tableColumns = ImmutableMap.builder();
        for (SchemaTableName tableName : listTables(prefix.getSchemaName())) {
            int position = 1;
            ImmutableList.Builder<ColumnMetadata> columns = ImmutableList.builder();
            for (ColumnMetadata column : tables.get(tableName).getColumns()) {
                columns.add(new ColumnMetadata(column.getName(), column.getType(), position, false));
                position++;
            }
            tableColumns.put(tableName, columns.build());
        }
        return tableColumns.build();
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            Map<Symbol, ColumnHandle> assignments = node.getAssignments();

            ImmutableMap.Builder<Symbol, ColumnHandle> newAssignmentsBuilder = ImmutableMap.builder();
            for (Map.Entry<Symbol, ColumnHandle> assignmentEntry : assignments.entrySet()) {
                ColumnMetadata originalColumn = metadata.getColumnMetadata(tableHandle, assignmentEntry.getValue());

                ColumnHandle aliasedColumnHandle = lookupColumns.get(originalColumn.getName());
                checkState(aliasedColumnHandle != null, "no matching column for original column %s found!", originalColumn);
                newAssignmentsBuilder.put(assignmentEntry.getKey(), aliasedColumnHandle);
            }

            return new TableScanNode(node.getId(), aliasTableHandle.get(), node.getOutputSymbols(), newAssignmentsBuilder.build(), node.getPartitionPredicate(), node.getUpstreamPredicateHint());
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            this.tableName = tableName;
        }

        public TableMetadataBuilder column(String columnName, ColumnType type)
        {
            columns.add(new ColumnMetadata(columnName, type, ordinalPosition++, false));
            return this;
        }
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            return this;
        }

        public TableMetadataBuilder partitionKeyColumn(String columnName, ColumnType type)
        {
            columns.add(new ColumnMetadata(columnName, type, ordinalPosition++, true));
            return this;
        }
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Related Classes of com.facebook.presto.spi.ColumnMetadata

  • com.facebook.presto.AbstractTestQueries
  • com.facebook.presto.cassandra.CassandraColumnHandle
  • com.facebook.presto.cassandra.TestCassandraConnector
  • com.facebook.presto.connector.informationSchema.InformationSchemaDataStreamProvider
  • com.facebook.presto.connector.informationSchema.InformationSchemaMetadata
  • com.facebook.presto.connector.informationSchema.InformationSchemaPageSourceProvider
  • com.facebook.presto.connector.jmx.JmxColumnHandle
  • com.facebook.presto.connector.system.SystemDataStreamProvider
  • com.facebook.presto.connector.system.SystemRecordSetProvider
  • com.facebook.presto.connector.system.SystemTablesMetadata
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