public class CountCheckRowSequence extends java.lang.Object implements RowSequence
Modifier and Type | Method and Description |
---|---|
void |
close()
Indicates that this sequence will not be required any more.
|
java.lang.Object |
getCell(int icol)
Returns the contents of a cell in the current row.
|
java.lang.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.
|
static RowSequence |
getSafeRowSequence(RowSequence rseq,
int ncol,
long nrow)
Returns a row sequence guaranteed to give the required number of rows.
|
boolean |
next()
Attempts to advance the current row to the next one.
|
public boolean next() throws java.io.IOException
RowSequence
RowSequence.getCell(int)
or RowSequence.getRow()
methods.next
in interface RowSequence
next
in interface Sequence
java.io.IOException
- if there is some errorpublic java.lang.Object getCell(int icol) throws java.io.IOException
RowSequence
getCell
in interface RowData
getCell
in interface RowSequence
icol
- column indexjava.io.IOException
- if there is an error reading the datapublic java.lang.Object[] getRow() throws java.io.IOException
RowSequence
getRow
in interface RowData
getRow
in interface RowSequence
java.io.IOException
- if there is an error reading the datapublic void close() throws java.io.IOException
RowSequence
close
is undefined.close
in interface java.io.Closeable
close
in interface java.lang.AutoCloseable
close
in interface RowSequence
java.io.IOException
public static RowSequence getSafeRowSequence(RowSequence rseq, int ncol, long nrow)
rseq
- row sequence on which the returned one is basedncol
- number of columns (required for constructing dummy rows)nrow
- required number of rows, or -1 for no requirementnrow<0
the input
sequence will be returned