com.mysema.query.types.expr
Class Coalesce<T extends Comparable>

java.lang.Object
  com.mysema.query.types.ExpressionBase<D>
      com.mysema.query.types.expr.SimpleExpression<D>
          com.mysema.query.types.expr.ComparableExpressionBase<D>
              com.mysema.query.types.expr.ComparableExpression<T>
                  com.mysema.query.types.expr.Coalesce<T>

Type Parameters:

T -

All Implemented Interfaces:

Expression<T>, Serializable

public class Coalesce<T extends Comparable>
extends ComparableExpression<T>

Coalesce defines a coalesce function invocation. The coalesce function returns null if all arguments are null and the first non-null argument otherwise

Author:

tiwe

See Also:

Serialized Form

Field Summary

Fields inherited from class com.mysema.query.types.expr.SimpleExpression

primitive

Fields inherited from class com.mysema.query.types.ExpressionBase

type

Constructor Summary

Coalesce(Class<? extends T> type, Expression... exprs)

Coalesce(Expression... exprs)

Method Summary

<R,C> R	accept(Visitor<R,C> v, C context) Accept the visitor with the given context
Coalesce<T>	add(Expression<T> expr)
Coalesce<T>	add(T constant)
DateExpression<T>	asDate()
DateTimeExpression<T>	asDateTime()
NumberExpression<?>	asNumber()
StringExpression	asString()
TimeExpression<T>	asTime()
boolean	equals(Object o)
int	hashCode()

Methods inherited from class com.mysema.query.types.expr.ComparableExpression

as, as, between, between, goe, goe, gt, gt, loe, loe, lt, lt, notBetween, notBetween

Methods inherited from class com.mysema.query.types.expr.ComparableExpressionBase

asc, castToNum, desc, stringValue

Methods inherited from class com.mysema.query.types.expr.SimpleExpression

count, countDistinct, eq, eq, in, in, in, isNotNull, isNull, ne, ne, notIn, notIn, notIn, when, when

Methods inherited from class com.mysema.query.types.ExpressionBase

getType, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

Coalesce

public Coalesce(Class<? extends T> type,
                Expression... exprs)

Coalesce

public Coalesce(Expression... exprs)

Method Detail

accept

public <R,C> R accept(Visitor<R,C> v,
                      C context)

Description copied from interface: Expression

Accept the visitor with the given context

Returns:

add

public final Coalesce<T> add(Expression<T> expr)

add

public final Coalesce<T> add(T constant)

asDate

public DateExpression<T> asDate()

asDateTime

public DateTimeExpression<T> asDateTime()

asNumber

public NumberExpression<?> asNumber()

asString

public StringExpression asString()

asTime

public TimeExpression<T> asTime()

equals

public boolean equals(Object o)

Specified by:

equals in class SimpleExpression<T extends Comparable>

hashCode

public int hashCode()

Overrides:

hashCode in class SimpleExpression<T extends Comparable>