oracle.forms.jdapi

Class JdapiObjectLibraryTabObjectIterator

java.lang.Object

oracle.forms.jdapi.JdapiObjectLibraryTabObjectIterator

All Implemented Interfaces:

java.util.Iterator, JdapiIterator

class JdapiObjectLibraryTabObjectIterator
extends java.lang.Object
implements JdapiIterator

JdapiObjectLibraryTabObjectIterator is an implementation of a JdapiIterator for objects within a tab of an ObjectLibrary.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) int	m_lastPosition Position of last element in list, cached here for performance.
(package private) ObjectLibraryTab	m_olt ObjectLibraryTab who's object this is an iterator for.
(package private) int	m_position Current position in the list of objects.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	JdapiObjectLibraryTabObjectIterator(ObjectLibraryTab olt) Constructor.

Method Summary

Modifier and Type	Method and Description
void	goLast() Moves the iterator to the end of the list.
void	goStart() Moves the iterator to the start of the list.
boolean	hasNext() Returns true if the iteration has more elements (JDK1.2 iterator style).
boolean	hasPrevious() Returns true if the iteration has previous elements (JDK1.2 list iterator style).
java.lang.Object	next() Gets the next object (JDK1.2 iterator style).
java.lang.Object	previous() Gets the previous object (JDK1.2 list iterator style).
void	remove() Removes the current object from the iteration.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Detail

m_olt

ObjectLibraryTab m_olt

ObjectLibraryTab who's object this is an iterator for.

m_position

int m_position

Current position in the list of objects. Note, for ObjectLibraryTabs this is 1-based.

m_lastPosition

int m_lastPosition

Position of last element in list, cached here for performance.

Constructor Detail

JdapiObjectLibraryTabObjectIterator

protected JdapiObjectLibraryTabObjectIterator(ObjectLibraryTab olt)
                                       throws JdapiException

Constructor.

Parameters:

olt - ObjectLibraryTab to iterate over

Throws:

JdapiException

Method Detail

goLast

public void goLast()

Moves the iterator to the end of the list. Useful if you want to step backwards through a list.

Specified by:

goLast in interface JdapiIterator

goStart

public void goStart()

Moves the iterator to the start of the list.

Specified by:

goStart in interface JdapiIterator

hasNext

public boolean hasNext()

Returns true if the iteration has more elements (JDK1.2 iterator style).

Specified by:

hasNext in interface java.util.Iterator

Specified by:

hasNext in interface JdapiIterator

Returns:

If the iteration has more elements

hasPrevious

public boolean hasPrevious()

Returns true if the iteration has previous elements (JDK1.2 list iterator style).

Specified by:

hasPrevious in interface JdapiIterator

Returns:

If the iteration has previous elements

next

public java.lang.Object next()
                      throws JdapiException

Gets the next object (JDK1.2 iterator style).

Specified by:

next in interface java.util.Iterator

Specified by:

next in interface JdapiIterator

Returns:

The next object, null if there are none

Throws:

JdapiException

previous

public java.lang.Object previous()
                          throws JdapiException

Gets the previous object (JDK1.2 list iterator style).

Specified by:

previous in interface JdapiIterator

Returns:

The previous object, null if there are none

Throws:

JdapiException

remove

public void remove()
            throws JdapiException

Removes the current object from the iteration. You may not call this method twice on the same object in the iteration. This is the method you should use if you want to remove objects from within an iteration and continue to go through the iteration. If you destroy an object in the iteration any other way, the iterator will probably fail.

If the iterator is not positioned at the first element of the list, it will position itself there before doing the remove. This allows you to write code like:

   while(iter.hasNext()) {
     iter.remove();
   }
 

Specified by:

remove in interface java.util.Iterator

Specified by:

remove in interface JdapiIterator

Throws:

JdapiException