SimpleCaseExpression (Hibernate JavaDocs)
Date: 2012-04-05

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## org.hibernate.ejb.criteria.expression
Class SimpleCaseExpression<C,R>

    java.lang.Object
      org.hibernate.ejb.criteria.AbstractNode
          org.hibernate.ejb.criteria.expression.AbstractTupleElement<X>
              org.hibernate.ejb.criteria.expression.SelectionImpl<T>
                  org.hibernate.ejb.criteria.expression.ExpressionImpl<R>
                      org.hibernate.ejb.criteria.expression.SimpleCaseExpression<C,R>

All Implemented Interfaces:
  Serializable, CriteriaBuilder.SimpleCase<C,R>, Expression<R>, Selection<R>, TupleElement<R>, ExpressionImplementor<R>, ParameterContainer, Renderable, SelectionImplementor<R>, TupleElementImplementor<R>

    public class SimpleCaseExpression<C,R>

extends ExpressionImpl<R>
implements CriteriaBuilder.SimpleCase<C,R>, Serializable

Models what ANSI SQL terms a simple case statement. This is a `CASE` expression in the form

     CASE [expression]
         WHEN [firstCondition] THEN [firstResult]
         WHEN [secondCondition] THEN [secondResult]
         ELSE [defaultResult]
     END

See Also:
  Serialized Form

Nested Class Summary
`class` | `SimpleCaseExpression.WhenClause`

Nested classes/interfaces inherited from interface org.hibernate.ejb.criteria.ParameterContainer
`ParameterContainer.Helper`

Constructor Summary
`SimpleCaseExpression(CriteriaBuilderImpl criteriaBuilder, Class<R> javaType, Expression<? extends C> expression)`

Method Summary
`Expression<C>` | `getExpression()`
`Expression<? extends R>` | `getOtherwiseResult()`
`List<SimpleCaseExpression.WhenClause>` | `getWhenClauses()`
`Expression<R>` | `otherwise(Expression<? extends R> result)`
`Expression<R>` | `otherwise(R result)`
`void` | `registerParameters(ParameterRegistry registry)` Register any parameters contained within this query component with the given registry.
`String` | `render(CriteriaQueryCompiler.RenderingContext renderingContext)`
`String` | `renderProjection(CriteriaQueryCompiler.RenderingContext renderingContext)`
`CriteriaBuilder.SimpleCase<C,R>` | `when(C condition, Expression<? extends R> result)`
`CriteriaBuilder.SimpleCase<C,R>` | `when(C condition, R result)`

Methods inherited from class org.hibernate.ejb.criteria.expression.ExpressionImpl
`as, asBigDecimal, asBigInteger, asDouble, asFloat, asInteger, asLong, asString, in, in, in, in, isNotNull, isNull`

Methods inherited from class org.hibernate.ejb.criteria.expression.SelectionImpl
`alias, getCompoundSelectionItems, getValueHandlers, isCompoundSelection`

Methods inherited from class org.hibernate.ejb.criteria.expression.AbstractTupleElement
`forceConversion, getAlias, getJavaType, getValueHandler, resetJavaType, setAlias`

Methods inherited from class org.hibernate.ejb.criteria.AbstractNode
`criteriaBuilder`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface javax.persistence.criteria.Expression
`as, in, in, in, in, isNotNull, isNull`

Methods inherited from interface javax.persistence.criteria.Selection
`alias, getCompoundSelectionItems, isCompoundSelection`

Methods inherited from interface javax.persistence.TupleElement
`getAlias, getJavaType`

Methods inherited from interface org.hibernate.ejb.criteria.SelectionImplementor
`getValueHandlers`

Methods inherited from interface org.hibernate.ejb.criteria.TupleElementImplementor
`getValueHandler`

Constructor Detail

### SimpleCaseExpression

    public SimpleCaseExpression(CriteriaBuilderImpl criteriaBuilder,
                                Class<R> javaType,
                                Expression<? extends C> expression)

Method Detail

### getExpression

    public Expression<C> getExpression()

  Specified by:
    `getExpression` in interface `CriteriaBuilder.SimpleCase<C,R>`

### when

    public CriteriaBuilder.SimpleCase<C,R> when(C condition,
                                                R result)

  Specified by:
    `when` in interface `CriteriaBuilder.SimpleCase<C,R>`

### when

    public CriteriaBuilder.SimpleCase<C,R> when(C condition,
                                                Expression<? extends R> result)

  Specified by:
    `when` in interface `CriteriaBuilder.SimpleCase<C,R>`

### otherwise

    public Expression<R> otherwise(R result)

  Specified by:
    `otherwise` in interface `CriteriaBuilder.SimpleCase<C,R>`

### otherwise

    public Expression<R> otherwise(Expression<? extends R> result)

  Specified by:
    `otherwise` in interface `CriteriaBuilder.SimpleCase<C,R>`

### getOtherwiseResult

    public Expression<? extends R> getOtherwiseResult()

### getWhenClauses

    public List<SimpleCaseExpression.WhenClause> getWhenClauses()

### registerParameters

    public void registerParameters(ParameterRegistry registry)

  Description copied from interface: `ParameterContainer`
  Register any parameters contained within this query component with the given registry.

  Specified by:
    `registerParameters` in interface `ParameterContainer`
  Parameters:
    `registry` - The parameter registry with which to register.

### render

    public String render(CriteriaQueryCompiler.RenderingContext renderingContext)

  Specified by:
    `render` in interface `Renderable`

### renderProjection

    public String renderProjection(CriteriaQueryCompiler.RenderingContext renderingContext)

  Specified by:
    `renderProjection` in interface `Renderable`

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