javax.jdo.query

Interface IfThenElseExpression<T>

Type Parameters:

T - Java type

All Superinterfaces:

ComparableExpression<T>, Expression<T>

public interface IfThenElseExpression<T>
extends ComparableExpression<T>

Representation of an IF-THEN-ELSE expression.

Method Summary

Modifier and Type	Method and Description
IfThenElseExpression<T>	elseEnd(Expression<T> elseValueExpr) Method to add the "ELSE ..." clause.
IfThenElseExpression<T>	elseEnd(T elseValue) Method to add the "ELSE ..." clause.
IfThenElseExpression<T>	ifThen(BooleanExpression cond, Expression<T> thenValueExpr) Method to add an "IF (...) ..." clause.
IfThenElseExpression<T>	ifThen(BooleanExpression cond, T thenValue) Method to add an "IF (...) ..." clause.

Methods inherited from interface javax.jdo.query.ComparableExpression

asc, desc, gt, gt, gteq, gteq, lt, lt, lteq, lteq, max, min

Methods inherited from interface javax.jdo.query.Expression

as, cast, count, countDistinct, eq, eq, instanceOf, ne, ne

Method Detail

ifThen

IfThenElseExpression<T> ifThen(BooleanExpression cond,
                               Expression<T> thenValueExpr)

Method to add an "IF (...) ..." clause. If called multiple times, will add extra "IF (...) ..." or "ELSE IF (...) ..."

Parameters:

cond - The if expression

thenValueExpr - Expression to return when the if expression is met

Returns:

This expression

ifThen

IfThenElseExpression<T> ifThen(BooleanExpression cond,
                               T thenValue)

Method to add an "IF (...) ..." clause. If called multiple times, will add extra "IF (...) ..." or "ELSE IF (...) ..."

Parameters:

cond - The if condition

thenValue - Value to return when the if expression is met

Returns:

This expression

elseEnd

IfThenElseExpression<T> elseEnd(Expression<T> elseValueExpr)

Method to add the "ELSE ..." clause. If called multiple times will replace the previous else clause

Parameters:

elseValueExpr - Expression for value to return when the if expression is not met

Returns:

This expression

elseEnd

IfThenElseExpression<T> elseEnd(T elseValue)

Method to add the "ELSE ..." clause. If called multiple times will replace the previous else clause

Parameters:

elseValue - Value to return when the if expression is not met

Returns:

This expression