org.datanucleus.api.jdo.query

Class EnumExpressionImpl<T>

java.lang.Object

org.datanucleus.api.jdo.query.ExpressionImpl<T>

org.datanucleus.api.jdo.query.ComparableExpressionImpl<Enum>

org.datanucleus.api.jdo.query.EnumExpressionImpl<T>

All Implemented Interfaces:

ComparableExpression<Enum>, EnumExpression<Enum>, Expression<Enum>

public class EnumExpressionImpl<T>
extends ComparableExpressionImpl<Enum>
implements EnumExpression<Enum>

Implementation of an Enum expression.

Constructor Summary

Constructors

Constructor and Description
EnumExpressionImpl(Class<Enum> cls, String name, ExpressionType type)
EnumExpressionImpl(org.datanucleus.query.expression.Expression queryExpr)
EnumExpressionImpl(PersistableExpression parent, String name)

Method Summary

Modifier and Type	Method and Description
NumericExpression<Integer>	ordinal() Method to return an expression for the ordinal of this enum.

Methods inherited from class org.datanucleus.api.jdo.query.ComparableExpressionImpl

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

Methods inherited from class org.datanucleus.api.jdo.query.ExpressionImpl

cast, count, countDistinct, eq, eq, getQueryExpression, instanceOf, isParameter, isVariable, ne, ne

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.datanucleus.query.typesafe.ComparableExpression

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

Methods inherited from interface org.datanucleus.query.typesafe.Expression

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

Constructor Detail

EnumExpressionImpl

public EnumExpressionImpl(PersistableExpression parent,
                          String name)

EnumExpressionImpl

public EnumExpressionImpl(Class<Enum> cls,
                          String name,
                          ExpressionType type)

EnumExpressionImpl

public EnumExpressionImpl(org.datanucleus.query.expression.Expression queryExpr)

Method Detail

ordinal

public NumericExpression<Integer> ordinal()

Description copied from interface: EnumExpression

Method to return an expression for the ordinal of this enum.

Specified by:

ordinal in interface EnumExpression<Enum>

Returns:

Expression for the ordinal of the passed enum