public abstract class BaseRowIterator extends java.lang.Object implements RowIterator
RowIterator
.Constructor and Description |
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BaseRowIterator() |
Modifier and Type | Method and Description |
---|---|
void |
add(Row row)
Not supported in the base implementation.
|
abstract Row |
current()
Returns the last
Row returned by me (by RowIterator.next() ,RowIterator.previous() ,
RowIterator.first() ,RowIterator.last() , etc.). |
abstract int |
currentIndex()
Returns the index of the
RowIterator.current() row, if any. |
Row |
first()
|
abstract boolean |
hasCurrent()
Returns
true if I have a current Row . |
abstract boolean |
hasNext()
Returns
true if I have more Row s when traversing the list
in the forward direction. |
abstract boolean |
hasPrevious()
Returns
true if I have more Row s when traversing the list
in the reverse direction. |
boolean |
isEmpty()
Returns
true if there are no rows to report with this iterator. |
Row |
last()
|
abstract Row |
next()
|
int |
next(int count)
Sets the current iterator position to currentIndex() + count; this will not set the
current row, peekPrevious() may be used to return the current row.
|
abstract int |
nextIndex()
Returns the index of the
RowIterator.next() row, if any, or the number of elements is
the iterator if we've reached the end. |
Row |
peekNext()
Return the value that would be returned by a call to
RowIterator.next() , if any, but
don't update my position. |
Row |
peekPrevious()
Return the value that would be returned by a call to
RowIterator.previous() , if any,
but don't update my position. |
abstract Row |
previous()
|
int |
previous(int count)
Sets the current iterator position to currentIndex() - count; this will not set the
current row, peekNext() may be used to return the current row.
|
abstract int |
previousIndex()
Returns the index of the
RowIterator.previous() row, if any, or -1 if we're add the
beginning of the list. |
void |
remove()
Not supported in the base implementation.
|
abstract void |
reset()
Re-initialize this
RowIterator to its initial state (positioned just
before the first Row in the list). |
void |
set(Row row)
Not supported in the base implementation.
|
int |
size()
Retunrs the current size of the underlaying row collection
|
public void add(Row row) throws AxionException
add
in interface RowIterator
AxionException
public abstract Row current() throws java.util.NoSuchElementException
RowIterator
Row
returned by me (by RowIterator.next()
,RowIterator.previous()
,
RowIterator.first()
,RowIterator.last()
, etc.).current
in interface RowIterator
java.util.NoSuchElementException
- when no Row
has yet been returnedpublic abstract int currentIndex() throws java.util.NoSuchElementException
RowIterator
RowIterator.current()
row, if any.currentIndex
in interface RowIterator
java.util.NoSuchElementException
- when no Row
has yet been returnedpublic Row first() throws AxionException
RowIterator
Row
in the list, positioning the cursor to just before
the first Row
in the list. (In other words, after first
is
called both RowIterator.next()
and RowIterator.current()
will return the first row in the
list.)first
in interface RowIterator
AxionException
- when a problem occurs accessing the Row
public abstract boolean hasCurrent()
RowIterator
true
if I have a current Row
. (In other words,
returns true
iff RowIterator.current()
would return a Row
rather
than throwing an exception.)hasCurrent
in interface RowIterator
public abstract boolean hasNext()
RowIterator
true
if I have more Row
s when traversing the list
in the forward direction. (In other words, returns true
iff
RowIterator.next()
would return a Row
rather than throwing an exception.)hasNext
in interface RowIterator
public abstract boolean hasPrevious()
RowIterator
true
if I have more Row
s when traversing the list
in the reverse direction. (In other words, returns true
iff
RowIterator.previous()
would return a Row
rather than throwing an exception.)hasPrevious
in interface RowIterator
public boolean isEmpty()
RowIterator
true
if there are no rows to report with this iterator.isEmpty
in interface RowIterator
public Row last() throws AxionException
RowIterator
Row
in the list, positioning the cursor to just after the
last Row
in the list. (In other words, after last
is called
both RowIterator.previous()
and RowIterator.current()
will return the last row in the list.)last
in interface RowIterator
AxionException
- when a problem occurs accessing the Row
public abstract Row next() throws java.util.NoSuchElementException, AxionException
RowIterator
next
in interface RowIterator
java.util.NoSuchElementException
- when there is no next Row
AxionException
- when a problem occurs accessing the Row
public int next(int count) throws AxionException
RowIterator
next
in interface RowIterator
AxionException
public abstract int nextIndex()
RowIterator
RowIterator.next()
row, if any, or the number of elements is
the iterator if we've reached the end.nextIndex
in interface RowIterator
public Row peekNext() throws AxionException
RowIterator
RowIterator.next()
, if any, but
don't update my position.peekNext
in interface RowIterator
AxionException
- when a problem occurs accessing the Row
public Row peekPrevious() throws AxionException
RowIterator
RowIterator.previous()
, if any,
but don't update my position.peekPrevious
in interface RowIterator
AxionException
- when a problem occurs accessing the Row
public abstract Row previous() throws java.util.NoSuchElementException, AxionException
RowIterator
previous
in interface RowIterator
java.util.NoSuchElementException
- when there is no next Row
AxionException
- when a problem occurs accessing the Row
public int previous(int count) throws AxionException
RowIterator
previous
in interface RowIterator
AxionException
public abstract int previousIndex()
RowIterator
RowIterator.previous()
row, if any, or -1 if we're add the
beginning of the list.previousIndex
in interface RowIterator
public void remove() throws AxionException
remove
in interface RowIterator
AxionException
public abstract void reset() throws AxionException
RowIterator
RowIterator
to its initial state (positioned just
before the first Row
in the list).reset
in interface RowIterator
AxionException
public void set(Row row) throws AxionException
set
in interface RowIterator
AxionException
public int size() throws AxionException
RowIterator
size
in interface RowIterator
AxionException