org.apache.derby.impl.sql.execute

Class CurrentDatetime

java.lang.Object

org.apache.derby.impl.sql.execute.CurrentDatetime

public class CurrentDatetime
extends java.lang.Object

CurrentDatetime provides execution support for ensuring that the current datetime is evaluated only once for a statement. The same value is returned for every CURRENT_DATE, CURRENT_TIME, and CURRENT_TIMESTAMP in the statement.

This is expected to be used by an activation and its result set, and so 'forget' must be called whenever you want to reuse the CurrentDatetime object for additional executions of the statement.

Constructor Summary

Constructors

Constructor and Description
CurrentDatetime() The constructor is public; note we wait until evaluation to put any values into the fields.

Method Summary

Modifier and Type	Method and Description
void	forget() This is called prior to each execution of the statement, to ensure that it starts over with a new current datetime value.
java.sql.Date	getCurrentDate()
java.sql.Time	getCurrentTime()
java.sql.Timestamp	getCurrentTimestamp()

Methods inherited from class java.lang.Object

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

Constructor Detail

CurrentDatetime

public CurrentDatetime()

The constructor is public; note we wait until evaluation to put any values into the fields.

Method Detail

getCurrentDate

public java.sql.Date getCurrentDate()

getCurrentTime

public java.sql.Time getCurrentTime()

getCurrentTimestamp

public java.sql.Timestamp getCurrentTimestamp()

forget

public void forget()

This is called prior to each execution of the statement, to ensure that it starts over with a new current datetime value.