com.antelmann.io
Class ObjectEnumerator

java.lang.Object
  com.antelmann.util.AbstractIterator
      com.antelmann.io.ObjectEnumerator

All Implemented Interfaces:

Enumeration, Iterator

public class ObjectEnumerator
extends AbstractIterator

used to iterate over (potentially serialized) objects contained in a binary file or inputstream.

Author:

Holger Antelmann

See Also:

MyFile.objectEnumerator(), MyFile.objectEnumerator(boolean), MyFile.objectEnumerator(boolean, Logger)

Constructor Summary

ObjectEnumerator(File file, boolean useDeserialization)

ObjectEnumerator(File file, boolean useDeserialization, Logger exceptionLogger)

ObjectEnumerator(InputStream stream, boolean useDeserialization)

ObjectEnumerator(InputStream stream, boolean useDeserialization, Logger exceptionLogger)

Method Summary

protected void	finalize() closes the embedded input stream
Object	getNextElement() if no more Element is available, this method is to return null or throw any Exception.

Methods inherited from class com.antelmann.util.AbstractIterator

allowsNull, currentElement, enumerate, getAll, getCount, getEndCondition, getFilter, hasMoreElements, hasNext, iterate, list, list, next, nextElement, propagatesException, remove, reverseEnumeration, setAllowNull, setFilter, setPropagateException, sortEnumeration, sortEnumeration

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectEnumerator

public ObjectEnumerator(File file,
                        boolean useDeserialization)
                 throws IOException

Throws:

IOException

ObjectEnumerator

public ObjectEnumerator(File file,
                        boolean useDeserialization,
                        Logger exceptionLogger)
                 throws IOException

Throws:

IOException

ObjectEnumerator

public ObjectEnumerator(InputStream stream,
                        boolean useDeserialization)
                 throws IOException

Throws:

IOException

ObjectEnumerator

public ObjectEnumerator(InputStream stream,
                        boolean useDeserialization,
                        Logger exceptionLogger)
                 throws IOException

Throws:

IOException

Method Detail

finalize

protected void finalize()
                 throws IOException

closes the embedded input stream

Overrides:

finalize in class Object

Throws:

IOException

getNextElement

public Object getNextElement()
                      throws Exception

Description copied from class: AbstractIterator

if no more Element is available, this method is to return null or throw any Exception. Errors (as opposed to Exceptions) are not caught, i.e. they would always be thrown directly and unwrapped during next().

Specified by:

getNextElement in class AbstractIterator

Throws:

Exception