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java.lang.Objectorg.axiondb.engine.rowiterators.BaseRowIterator
org.axiondb.engine.rowiterators.BaseJoinedRowIterator
Constructor Summary | |
BaseJoinedRowIterator()
|
Method Summary | |
protected boolean |
acceptable(int rowindex,
Row row)
|
protected void |
addIterator(RowIterator iter)
|
protected boolean |
allIteratorsAreEmpty()
|
protected boolean |
anyIteratorIsEmpty()
|
protected void |
clearNextRow()
|
protected void |
clearPreviousRow()
|
Row |
current()
Returns the last Row returned by me (by next() ,previous() ,
first() ,last() , etc.). |
int |
currentIndex()
Returns the index of the current() row, if any. |
Row |
first()
Returns the first Row in the list, positioning the cursor to just before
the first Row in the list. |
protected RowIterator |
getIterator(int i)
|
protected int |
getIteratorCount()
|
protected abstract String |
getShortName()
|
boolean |
hasCurrent()
Returns true if I have a current Row . |
boolean |
hasNext()
Returns true if I have more Row s when traversing the list
in the forward direction. |
boolean |
hasPrevious()
Returns true if I have more Row s when traversing the list
in the reverse direction. |
protected boolean |
isLeftJoin()
|
protected boolean |
isNextRowSet()
|
protected boolean |
isPreviousRowSet()
|
protected boolean |
isRightJoin()
|
Row |
last()
Returns the last Row in the list, positioning the cursor to just after the
last Row in the list. |
Row |
next()
Returns the next Row in the list, or throws
NoSuchElementException if no next Row exists. |
int |
nextIndex()
Returns the index of the next() row, if any, or the number of elements is
the iterator if we've reached the end. |
Row |
previous()
Returns the previous Row in the list, or throws
NoSuchElementException if no next Row exists. |
int |
previousIndex()
Returns the index of the previous() row, if any, or -1 if we're add the
beginning of the list. |
void |
reset()
Re-initialize this RowIterator to its initial state (positioned just
before the first Row in the list). |
protected abstract void |
set(int rowIndex,
Row row)
|
void |
set(Row row)
Set the Row at the current position in my underlying collection, or throw
UnsupportedOperationException . |
void |
setJoinCondition(RowDecorator decorator,
Selectable condition)
|
void |
setJoinType(int type)
|
protected abstract boolean |
setNextRow()
|
protected void |
setNextRow(Row row)
|
protected abstract boolean |
setPreviousRow()
|
protected void |
setPreviousRow(Row row)
|
String |
toString()
|
Methods inherited from class org.axiondb.engine.rowiterators.BaseRowIterator |
add, isEmpty, peekNext, peekPrevious, remove |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface org.axiondb.JoinedRowIterator |
addRowIterator |
Methods inherited from interface org.axiondb.RowIterator |
add, isEmpty, peekNext, peekPrevious, remove |
Constructor Detail |
public BaseJoinedRowIterator()
Method Detail |
public void setJoinCondition(RowDecorator decorator, Selectable condition)
setJoinCondition
in interface JoinedRowIterator
public void setJoinType(int type)
setJoinType
in interface JoinedRowIterator
public Row current()
RowIterator
Row
returned by me (by RowIterator.next()
,RowIterator.previous()
,
RowIterator.first()
,RowIterator.last()
, etc.).
current
in interface RowIterator
current
in class BaseRowIterator
public int currentIndex()
RowIterator
RowIterator.current()
row, if any.
currentIndex
in interface RowIterator
currentIndex
in class BaseRowIterator
public 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
hasCurrent
in class BaseRowIterator
public 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
hasNext
in class BaseRowIterator
public Row next() throws AxionException
RowIterator
Row
in the list, or throws
NoSuchElementException
if no next Row
exists.
next
in interface RowIterator
next
in class BaseRowIterator
AxionException
public 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
nextIndex
in class BaseRowIterator
public 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
hasPrevious
in class BaseRowIterator
public Row previous() throws AxionException
RowIterator
Row
in the list, or throws
NoSuchElementException
if no next Row
exists.
previous
in interface RowIterator
previous
in class BaseRowIterator
AxionException
public int previousIndex()
RowIterator
RowIterator.previous()
row, if any, or -1 if we're add the
beginning of the list.
previousIndex
in interface RowIterator
previousIndex
in class BaseRowIterator
public 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
first
in class BaseRowIterator
AxionException
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
last
in class BaseRowIterator
AxionException
public void reset() throws AxionException
RowIterator
RowIterator
to its initial state (positioned just
before the first Row
in the list).
reset
in interface RowIterator
reset
in class BaseRowIterator
AxionException
public void set(Row row) throws AxionException
RowIterator
Row
at the current position in my underlying collection, or throw
UnsupportedOperationException
. (Optional operation.)
set
in interface RowIterator
set
in class BaseRowIterator
AxionException
public String toString()
protected abstract void set(int rowIndex, Row row) throws AxionException
AxionException
protected abstract String getShortName()
protected abstract boolean setNextRow() throws AxionException
AxionException
protected abstract boolean setPreviousRow() throws AxionException
AxionException
protected boolean acceptable(int rowindex, Row row) throws AxionException
AxionException
protected boolean isLeftJoin()
protected boolean isRightJoin()
protected boolean isNextRowSet()
protected boolean isPreviousRowSet()
protected void setNextRow(Row row)
protected void setPreviousRow(Row row)
protected void clearNextRow()
protected void clearPreviousRow()
protected int getIteratorCount()
protected void addIterator(RowIterator iter)
protected RowIterator getIterator(int i)
protected boolean allIteratorsAreEmpty()
protected boolean anyIteratorIsEmpty()
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