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java.lang.Object | +--uk.ac.starlink.table.ReaderRowSequence
Partial implementation of RowSequence suitable for subclassing
by classes which can read a row at a time and don't know when the
row stream will come to an end.
Concrete subclasses have to implement the readRow()
method.
They may also want to override close()
.
Constructor Summary | |
ReaderRowSequence()
|
Method Summary | |
void |
close()
The ReaderRowSequence implementation does nothing. |
Object |
getCell(int icol)
Returns the contents of a cell in the current row. |
Object[] |
getRow()
Returns the contents of the current table row, as an array with the same number of elements as there are columns in this table. |
boolean |
next()
Attempts to advances the current row to the next one. |
protected abstract Object[] |
readRow()
Acquires the next row of objects from the input stream. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public ReaderRowSequence()
Method Detail |
protected abstract Object[] readRow() throws IOException
IOException
- if there is trouble reading the datapublic boolean next() throws IOException
RowSequence
RowSequence.getCell(int)
or RowSequence.getRow()
methods.
next
in interface RowSequence
IOException
- if there is some errorpublic Object getCell(int icol)
RowSequence
getCell
in interface RowSequence
public Object[] getRow()
RowSequence
getRow
in interface RowSequence
public void close() throws IOException
close
in interface RowSequence
IOException
|
Copyright © 2004 CLRC: Central Laboratory of the Research Councils. All rights reserved. | |||||||||
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