org.eigenbase.util14
Class Enum14.SerializableValue

java.lang.Object
  org.eigenbase.util14.Enum14.BasicValue
      org.eigenbase.util14.Enum14.SerializableValue

All Implemented Interfaces:

Serializable, Comparable, Enum14.Value

Direct Known Subclasses:

UtilTest.SerializableEnum

Enclosing class:

Enum14

public abstract static class Enum14.SerializableValue
extends Enum14.BasicValue
implements Serializable

SerializableValue extends BasicValue to provide better support for serializable subclasses. Instances of SerializableValue will deserialize into members of the original enumeration so that deserializedBasicValue == origBasicValue will be true.

See Also:

Serialized Form

Field Summary

protected int	_ordinal Ordinal value which, when deserialized, can be used by readResolve() to locate a matching instance in the original enumeration.
private static long	serialVersionUID SerialVersionUID created with JDK 1.5 serialver tool.

Constructor Summary

Enum14.SerializableValue(String name, int ordinal, String description)
Creates a new SerializableValue.

Method Summary

private void	readObject(ObjectInputStream in) Deserialization method reads the _ordinal value.
protected abstract Object	readResolve() Subclass must implement this method to retrieve a matching instance based on the _ordinal deserialized by readObject(java.io.ObjectInputStream).
private void	writeObject(ObjectOutputStream out) Serialization method writes just the ordinal value.

Methods inherited from class org.eigenbase.util14.Enum14.BasicValue

compareTo, equals, equals, getDescription, getName, getOrdinal, hashCode, toString, unexpected

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

SerialVersionUID created with JDK 1.5 serialver tool.

See Also:

Constant Field Values

_ordinal

protected int _ordinal

Ordinal value which, when deserialized, can be used by readResolve() to locate a matching instance in the original enumeration.

Constructor Detail

Enum14.SerializableValue

public Enum14.SerializableValue(String name,
                                int ordinal,
                                String description)

Creates a new SerializableValue.

Method Detail

readResolve

protected abstract Object readResolve()
                               throws ObjectStreamException

Subclass must implement this method to retrieve a matching instance based on the _ordinal deserialized by readObject(java.io.ObjectInputStream). This would typically be an instance from the original enumeration. Current instance is the candidate object deserialized from the ObjectInputStream. It is incomplete, cannot be used as-is, and this method must return a valid replacement. For example,
return SqlTypeName.get(_ordinal);

Returns:

replacement instance that matches _ordinal

Throws:

ObjectStreamException

readObject

private void readObject(ObjectInputStream in)
                 throws IOException

Deserialization method reads the _ordinal value.

Throws:

IOException

writeObject

private void writeObject(ObjectOutputStream out)
                  throws IOException

Serialization method writes just the ordinal value.

Throws:

IOException