com.beasys.commerce.util
Class SerializableEnumeration
java.lang.Object
|
+--com.beasys.commerce.util.SerializableEnumeration
- public class SerializableEnumeration
- extends java.lang.Object
- implements java.util.Enumeration, java.io.Serializable
An implementation of the Enumeration interface which is Serializable.
Note: Since most Enumeration implementations aren't Serializable
(including Vector.elements() and Collections.enumeration()), we need this
to return Enumerations from SessionBeans and other RemoteObjects. Most
collection classes are Serializable, so that's nice. However, to make life
easier, this uses the underlying Collection's iterator, most of which also
aren't Serializable. Therefore, if a partial enumeration has been done
before this Enumeration is serialized, the enumeration will start over
on the other side because this internally keeps the Collection's Iterator
in a transient field (since Iterator aren't generally Serializable).
This is also intentionally not thread-safe.
- Since:
- 2.0.1-sp1
- See Also:
- Serialized Form
Field Summary |
protected java.util.Collection |
c
The Collection we're fronting for. |
protected java.util.Iterator |
i
The current iterator. |
Method Summary |
boolean |
hasMoreElements()
Tell if this enumeration has more elements. |
java.lang.Object |
nextElement()
Get the next element in the enumeration. |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
c
protected java.util.Collection c
- The Collection we're fronting for.
i
protected transient java.util.Iterator i
- The current iterator.
SerializableEnumeration
public SerializableEnumeration(java.util.Collection c)
- Constructor.
- Parameters:
c
- the Collection- Throws:
- java.lang.IllegalArgumentException - thrown if c is not Serializable (most
Collections are Serializable).
hasMoreElements
public boolean hasMoreElements()
- Tell if this enumeration has more elements.
- Specified by:
- hasMoreElements in interface java.util.Enumeration
nextElement
public java.lang.Object nextElement()
- Get the next element in the enumeration.
- Specified by:
- nextElement in interface java.util.Enumeration
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