com.mchange.v1.util

Class WrapperUIterator

java.lang.Object

com.mchange.v1.util.WrapperUIterator

All Implemented Interfaces:

ClosableResource, UIterator

public abstract class WrapperUIterator
extends Object
implements UIterator

This implementation does not yet support removes once hasNext() has been called... will add if necessary.

Field Summary

Fields

Modifier and Type	Field and Description
protected static Object	SKIP_TOKEN

Constructor Summary

Constructors

Constructor and Description
WrapperUIterator(UIterator inner)
WrapperUIterator(UIterator inner, boolean supports_remove)

Method Summary

Methods

Modifier and Type	Method and Description
void	close() forces the release of any resources that might be associated with this object.
boolean	hasNext()
Object	next()
void	remove()
protected abstract Object	transformObject(Object o) return SKIP_TOKEN to indicate an object should be skipped, i.e., not exposed as part of the iterator.

Methods inherited from class java.lang.Object

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

Field Detail

SKIP_TOKEN

protected static final Object SKIP_TOKEN

Constructor Detail

WrapperUIterator

public WrapperUIterator(UIterator inner,
                boolean supports_remove)

WrapperUIterator

public WrapperUIterator(UIterator inner)

Method Detail

hasNext

public boolean hasNext()
                throws Exception

Specified by:

hasNext in interface UIterator

Throws:

Exception

next

public Object next()
            throws NoSuchElementException,
                   Exception

Specified by:

next in interface UIterator

Throws:

NoSuchElementException

Exception

remove

public void remove()
            throws Exception

Specified by:

remove in interface UIterator

Throws:

Exception

close

public void close()
           throws Exception

Description copied from interface: ClosableResource

forces the release of any resources that might be associated with this object.

Specified by:

close in interface ClosableResource

Specified by:

close in interface UIterator

Throws:

Exception

transformObject

protected abstract Object transformObject(Object o)
                                   throws Exception

return SKIP_TOKEN to indicate an object should be skipped, i.e., not exposed as part of the iterator. (we don't use null, because we want to support iterators over null-accepting Collections.)

Throws:

Exception