org.apache.calcite.adapter.druid

Class DruidTable

java.lang.Object

org.apache.calcite.schema.impl.AbstractTable

org.apache.calcite.adapter.druid.DruidTable

All Implemented Interfaces:

Table, TranslatableTable

public class DruidTable
extends AbstractTable
implements TranslatableTable

Table mapped onto a Druid table.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	DruidTable.MapRelProtoDataType Creates a RelDataType from a map of field names and types.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) String	dataSource
static org.joda.time.Interval	DEFAULT_INTERVAL
static String	DEFAULT_TIMESTAMP_COLUMN
(package private) com.google.common.collect.ImmutableList<org.joda.time.Interval>	intervals
(package private) com.google.common.collect.ImmutableSet<String>	metricFieldNames
(package private) RelProtoDataType	protoRowType
(package private) DruidSchema	schema
(package private) String	timestampFieldName

Constructor Summary

Constructors

Constructor and Description
DruidTable(DruidSchema schema, String dataSource, RelProtoDataType protoRowType, Set<String> metricFieldNames, String timestampFieldName, List<org.joda.time.Interval> intervals) Creates a Druid table.

Method Summary

Modifier and Type	Method and Description
(package private) static Table	create(DruidSchema druidSchema, String dataSourceName, List<org.joda.time.Interval> intervals, Map<String,SqlTypeName> fieldMap, Set<String> metricNameSet, String timestampColumnName, DruidConnectionImpl connection) Creates a DruidTable
RelDataType	getRowType(RelDataTypeFactory typeFactory)
RelNode	toRel(RelOptTable.ToRelContext context, RelOptTable relOptTable)

Methods inherited from class org.apache.calcite.schema.impl.AbstractTable

getJdbcTableType, getStatistic

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.calcite.schema.Table

getJdbcTableType, getStatistic

Field Detail

DEFAULT_TIMESTAMP_COLUMN

public static final String DEFAULT_TIMESTAMP_COLUMN

See Also:

Constant Field Values

DEFAULT_INTERVAL

public static final org.joda.time.Interval DEFAULT_INTERVAL

schema

final DruidSchema schema

dataSource

final String dataSource

protoRowType

final RelProtoDataType protoRowType

metricFieldNames

final com.google.common.collect.ImmutableSet<String> metricFieldNames

intervals

final com.google.common.collect.ImmutableList<org.joda.time.Interval> intervals

timestampFieldName

final String timestampFieldName

Constructor Detail

DruidTable

public DruidTable(DruidSchema schema,
                  String dataSource,
                  RelProtoDataType protoRowType,
                  Set<String> metricFieldNames,
                  String timestampFieldName,
                  List<org.joda.time.Interval> intervals)

Creates a Druid table.

Parameters:

schema - Druid schema that contains this table

dataSource - Druid data source name

protoRowType - Field names and types

metricFieldNames - Names of fields that are metrics

intervals - Default interval if query does not constrain the time, or null

timestampFieldName - Name of the column that contains the time

intervals - Intervals for the given table

Method Detail

create

static Table create(DruidSchema druidSchema,
                    String dataSourceName,
                    List<org.joda.time.Interval> intervals,
                    Map<String,SqlTypeName> fieldMap,
                    Set<String> metricNameSet,
                    String timestampColumnName,
                    DruidConnectionImpl connection)

Creates a DruidTable

Parameters:

druidSchema - Druid schema

dataSourceName - Data source name in Druid, also table name

intervals - Intervals, or null to use default

fieldMap - Mutable map of fields (dimensions plus metrics); may be partially populated already

metricNameSet - Mutable set of metric names; may be partially populated already

timestampColumnName - Name of timestamp column, or null

connection - If not null, use this connection to find column definitions

Returns:

A table

getRowType

public RelDataType getRowType(RelDataTypeFactory typeFactory)

Specified by:

getRowType in interface Table

toRel

public RelNode toRel(RelOptTable.ToRelContext context,
                     RelOptTable relOptTable)

Specified by:

toRel in interface TranslatableTable