Module org.eclipse.persistence.core

Package org.eclipse.persistence.internal.history

Class UniversalAsOfClause

java.lang.Object

org.eclipse.persistence.history.AsOfClause

org.eclipse.persistence.internal.history.UniversalAsOfClause

All Implemented Interfaces:

Serializable

public class UniversalAsOfClause
extends AsOfClause

INTERNAL: Purpose: Represents a query level AS OF TIMESTAMP/SCN Oracle SQL clause.

Responsibilities:

• Will be applied to the entire selection criteria, even if it is only set on the Query's expression builder.
• Prints the AS OF clause before the alias name in the FROM clause.

Since:

OracleAS TopLink 10g (10.0.3)

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.eclipse.persistence.history.AsOfClause

NO_CLAUSE

Constructor Summary

Constructors

Constructor	Description
UniversalAsOfClause(AsOfClause value)

Method Summary

Modifier and Type	Method	Description
AsOfClause	getAsOfClause()	INTERNAL: Gets the actual as of clause represented by this.
Object	getValue()	PUBLIC: The past time represented by the receiver.
boolean	isUniversal()	PUBLIC: Answers if this is a UniversalAsOfClause, one to be applied to the entire selection criteria.
void	printSQL(ExpressionSQLPrinter printer)	INTERNAL: Prints the as of clause for an expression inside of the FROM clause.
String	printString()

Methods inherited from class org.eclipse.persistence.history.AsOfClause

equals, isAsOfSCNClause, toString

Methods inherited from class java.lang.Object

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

Constructor Details

UniversalAsOfClause

public UniversalAsOfClause(AsOfClause value)

Method Details

printSQL

public void printSQL(ExpressionSQLPrinter printer)

INTERNAL: Prints the as of clause for an expression inside of the FROM clause.

Overrides:

printSQL in class AsOfClause

getAsOfClause

public AsOfClause getAsOfClause()

INTERNAL: Gets the actual as of clause represented by this.

getValue

public Object getValue()

Description copied from class: AsOfClause

PUBLIC: The past time represented by the receiver. Either a timestamp, a system change number, or an Expression.

Overrides:

getValue in class AsOfClause

isUniversal

public boolean isUniversal()

Description copied from class: AsOfClause

PUBLIC: Answers if this is a UniversalAsOfClause, one to be applied to the entire selection criteria.

Used when a query is made as of a past time.

Overrides:

isUniversal in class AsOfClause

printString

public String printString()