Package com.yahoo.search.grouping.request

Class TimeFunctions

java.lang.Object

com.yahoo.search.grouping.request.TimeFunctions

public abstract class TimeFunctions
extends java.lang.Object

This abstract class is a factory for timestamp functions in a GroupingExpression. Apart from offering per-function factory methods, this class also contains a newInstance(com.yahoo.search.grouping.request.TimeFunctions.Type, GroupingExpression) method which is useful for runtime construction of grouping requests.

Author:

Simon Thoresen Hult

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TimeFunctions.Type	Defines the different types of timestamps-functions that are available.

Constructor Summary

Constructors

Constructor	Description
TimeFunctions()

Method Summary

Modifier and Type	Method	Description
static DateFunction	newDate(GroupingExpression exp)	Creates a new instance of DateFunction for the given GroupingExpression.
static DayOfMonthFunction	newDayOfMonth(GroupingExpression exp)	Creates a new instance of DayOfMonthFunction for the given GroupingExpression.
static DayOfWeekFunction	newDayOfWeek(GroupingExpression exp)	Creates a new instance of DayOfWeekFunction for the given GroupingExpression.
static DayOfYearFunction	newDayOfYear(GroupingExpression exp)	Creates a new instance of DayOfYearFunction for the given GroupingExpression.
static HourOfDayFunction	newHourOfDay(GroupingExpression exp)	Creates a new instance of HourOfDayFunction for the given GroupingExpression.
static FunctionNode	newInstance(TimeFunctions.Type type, GroupingExpression exp)	Creates a new timestamp-function of the specified type for the given GroupingExpression.
static MinuteOfHourFunction	newMinuteOfHour(GroupingExpression exp)	Creates a new instance of MinuteOfHourFunction for the given GroupingExpression.
static MonthOfYearFunction	newMonthOfYear(GroupingExpression exp)	Creates a new instance of MonthOfYearFunction for the given GroupingExpression.
static SecondOfMinuteFunction	newSecondOfMinute(GroupingExpression exp)	Creates a new instance of SecondOfMinuteFunction for the given GroupingExpression.
static YearFunction	newYear(GroupingExpression exp)	Creates a new instance of YearFunction for the given GroupingExpression.

Methods inherited from class java.lang.Object

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

Constructor Detail

TimeFunctions

public TimeFunctions()

Method Detail

newInstance

public static FunctionNode newInstance(TimeFunctions.Type type,
                                       GroupingExpression exp)

Creates a new timestamp-function of the specified type for the given GroupingExpression.

Parameters:

type - The type of function to create.

exp - The expression to evaluate, must evaluate to a long.

Returns:

The created function node.

newDate

public static DateFunction newDate(GroupingExpression exp)

Creates a new instance of DateFunction for the given GroupingExpression.

Parameters:

exp - The expression to evaluate, must evaluate to a long.

Returns:

The created function node.

newDayOfMonth

public static DayOfMonthFunction newDayOfMonth(GroupingExpression exp)

Creates a new instance of DayOfMonthFunction for the given GroupingExpression.

Parameters:

exp - The expression to evaluate, must evaluate to a long.

Returns:

The created function node.

newDayOfWeek

public static DayOfWeekFunction newDayOfWeek(GroupingExpression exp)

Creates a new instance of DayOfWeekFunction for the given GroupingExpression.

Parameters:

exp - The expression to evaluate, must evaluate to a long.

Returns:

The created function node.

newDayOfYear

public static DayOfYearFunction newDayOfYear(GroupingExpression exp)

Creates a new instance of DayOfYearFunction for the given GroupingExpression.

Parameters:

exp - The expression to evaluate, must evaluate to a long.

Returns:

The created function node.

newHourOfDay

public static HourOfDayFunction newHourOfDay(GroupingExpression exp)

Creates a new instance of HourOfDayFunction for the given GroupingExpression.

Parameters:

exp - The expression to evaluate, must evaluate to a long.

Returns:

The created function node.

newMinuteOfHour

public static MinuteOfHourFunction newMinuteOfHour(GroupingExpression exp)

Creates a new instance of MinuteOfHourFunction for the given GroupingExpression.

Parameters:

exp - The expression to evaluate, must evaluate to a long.

Returns:

The created function node.

newMonthOfYear

public static MonthOfYearFunction newMonthOfYear(GroupingExpression exp)

Creates a new instance of MonthOfYearFunction for the given GroupingExpression.

Parameters:

exp - The expression to evaluate, must evaluate to a long.

Returns:

The created function node.

newSecondOfMinute

public static SecondOfMinuteFunction newSecondOfMinute(GroupingExpression exp)

Creates a new instance of SecondOfMinuteFunction for the given GroupingExpression.

Parameters:

exp - The expression to evaluate, must evaluate to a long.

Returns:

The created function node.

newYear

public static YearFunction newYear(GroupingExpression exp)

Creates a new instance of YearFunction for the given GroupingExpression.

Parameters:

exp - The expression to evaluate, must evaluate to a long.

Returns:

The created function node.