org.h2.test.db

Class TestFunctions.MedianString

java.lang.Object

org.h2.test.db.TestFunctions.MedianString

All Implemented Interfaces:

AggregateFunction

Enclosing class:

TestFunctions

public static class TestFunctions.MedianString
extends java.lang.Object
implements AggregateFunction

This median implementation keeps all objects in memory.

Constructor Summary

Constructors

Constructor and Description
MedianString()

Method Summary

Modifier and Type	Method and Description
void	add(java.lang.Object value) This method is called once for each row.
java.lang.Object	getResult() This method returns the computed aggregate value.
int	getType(int[] inputType) This method must return the SQL type of the method, given the SQL type of the input data.
void	init(java.sql.Connection conn) This method is called when the aggregate function is used.

Methods inherited from class java.lang.Object

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

Constructor Detail

MedianString

public MedianString()

Method Detail

add

public void add(java.lang.Object value)

Description copied from interface: AggregateFunction

This method is called once for each row. If the aggregate function is called with multiple parameters, those are passed as array.

Specified by:

add in interface AggregateFunction

Parameters:

value - the value(s) for this row

getResult

public java.lang.Object getResult()

Description copied from interface: AggregateFunction

This method returns the computed aggregate value.

Specified by:

getResult in interface AggregateFunction

Returns:

the aggregated value

getType

public int getType(int[] inputType)

Description copied from interface: AggregateFunction

This method must return the SQL type of the method, given the SQL type of the input data. The method should check here if the number of parameters passed is correct, and if not it should throw an exception.

Specified by:

getType in interface AggregateFunction

Parameters:

inputType - the SQL type of the parameters, Types

Returns:

the SQL type of the result

init

public void init(java.sql.Connection conn)

Description copied from interface: AggregateFunction

This method is called when the aggregate function is used. A new object is created for each invocation.

Specified by:

init in interface AggregateFunction

Parameters:

conn - a connection to the database