io.druid.sql.calcite.planner

Class Calcites

java.lang.Object

io.druid.sql.calcite.planner.Calcites

public class Calcites
extends Object

Utility functions for Calcite.

Method Summary

Modifier and Type	Method and Description
static org.joda.time.DateTime	calciteDateToJoda(int date, org.joda.time.DateTimeZone timeZone) The inverse of jodaToCalciteDate(DateTime, DateTimeZone).
static org.joda.time.DateTime	calciteTimestampToJoda(long timestamp, org.joda.time.DateTimeZone timeZone) The inverse of jodaToCalciteTimestamp(DateTime, DateTimeZone).
static org.apache.calcite.schema.SchemaPlus	createRootSchema(org.apache.calcite.schema.Schema druidSchema)
static Charset	defaultCharset()
static String	escapeStringLiteral(String s)
static ValueType	getValueTypeForSqlTypeName(org.apache.calcite.sql.type.SqlTypeName sqlTypeName)
static int	jodaToCalciteDate(org.joda.time.DateTime dateTime, org.joda.time.DateTimeZone timeZone) Calcite expects "DATE" types to be number of days from the epoch to the UTC date matching the local time fields.
static long	jodaToCalciteTimestamp(org.joda.time.DateTime dateTime, org.joda.time.DateTimeZone timeZone) Calcite expects "TIMESTAMP" types to be an instant that has the expected local time fields if printed as UTC.
static void	setSystemProperties()

Methods inherited from class java.lang.Object

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

Method Detail

setSystemProperties

public static void setSystemProperties()

defaultCharset

public static Charset defaultCharset()

createRootSchema

public static org.apache.calcite.schema.SchemaPlus createRootSchema(org.apache.calcite.schema.Schema druidSchema)

escapeStringLiteral

public static String escapeStringLiteral(String s)

getValueTypeForSqlTypeName

public static ValueType getValueTypeForSqlTypeName(org.apache.calcite.sql.type.SqlTypeName sqlTypeName)

jodaToCalciteTimestamp

public static long jodaToCalciteTimestamp(org.joda.time.DateTime dateTime,
                                          org.joda.time.DateTimeZone timeZone)

Calcite expects "TIMESTAMP" types to be an instant that has the expected local time fields if printed as UTC.

Parameters:

dateTime - joda timestamp

timeZone - session time zone

Returns:

Calcite style millis

jodaToCalciteDate

public static int jodaToCalciteDate(org.joda.time.DateTime dateTime,
                                    org.joda.time.DateTimeZone timeZone)

Calcite expects "DATE" types to be number of days from the epoch to the UTC date matching the local time fields.

Parameters:

dateTime - joda timestamp

timeZone - session time zone

Returns:

Calcite style date

calciteTimestampToJoda

public static org.joda.time.DateTime calciteTimestampToJoda(long timestamp,
                                                            org.joda.time.DateTimeZone timeZone)

The inverse of jodaToCalciteTimestamp(DateTime, DateTimeZone).

Parameters:

timestamp - Calcite style timestamp

timeZone - session time zone

Returns:

joda timestamp, with time zone set to the session time zone

calciteDateToJoda

public static org.joda.time.DateTime calciteDateToJoda(int date,
                                                       org.joda.time.DateTimeZone timeZone)

The inverse of jodaToCalciteDate(DateTime, DateTimeZone).

Parameters:

date - Calcite style date

timeZone - session time zone

Returns:

joda timestamp, with time zone set to the session time zone