uk.ac.starlink.table.join
Class ProgressRowSequence
java.lang.Object
|
+--uk.ac.starlink.table.WrapperRowSequence
|
+--uk.ac.starlink.table.join.ProgressRowSequence
- All Implemented Interfaces:
- RowSequence
- public class ProgressRowSequence
- extends WrapperRowSequence
RowSequence which logs progress to a ProgressIndicator
.
Has to contain a couple methods extra to the RowSequence
interface to make it behave properly.
- Since:
- 6 Aug 2004
Method Summary |
void |
close()
Indicates that progress is at an end. |
void |
next()
Advances the current row to the next one. |
void |
nextProgress()
Invokes next() and also updates the progress indicator. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ProgressRowSequence
public ProgressRowSequence(StarTable table,
ProgressIndicator indicator,
String stage)
throws IOException
- Constructs a new ProgressRowSequence.
- Parameters:
table
- table to get the base row sequence fromindicator
- indicator to be informed about progressstage
- string describing this stage of the process
nextProgress
public void nextProgress()
throws IOException,
InterruptedException
- Invokes
next()
and also updates the progress indicator.
IOException
InterruptedException
next
public void next()
throws IOException
- Description copied from interface:
RowSequence
- Advances the current row to the next one.
Since the initial position of a RowSequence is before the first row,
this method must be called before current row data
can be accessed using the
RowSequence.getCell(int)
or RowSequence.getRow()
methods.
An unchecked exception such as NoSuchElementException
will be thrown if RowSequence.hasNext()
returns false.
- Specified by:
next
in interface RowSequence
- Overrides:
next
in class WrapperRowSequence
- Throws:
IOException
- if there is some error in the positioning
close
public void close()
throws IOException
- Indicates that progress is at an end. Must be called to end the
progress indicator's stage.
- Specified by:
close
in interface RowSequence
- Overrides:
close
in class WrapperRowSequence
IOException