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public interface RowSequence
Provides sequential access to the data in a table. The data is a sequence of rows which may be processed from the first to the last. A RowSequence iterates over the rows one at a time. It starts off positioned before the first row, so the next method must be invoked before the first row can be accessed.
Typical usage might look like this:
RowSequence rseq = table.getRowSequence(); try { while ( rseq.next() ) { Object[] row = rseq.getRow(); ... } } finally { rseq.close(); }
A RowSequence cannot in general be expected to be used safely from multiple threads.
Method Summary | |
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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. |
boolean |
next()
Attempts to advances the current row to the next one. |
Method Detail |
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boolean next() throws java.io.IOException
getCell(int)
or getRow()
methods.
java.io.IOException
- if there is some errorjava.lang.Object getCell(int icol) throws java.io.IOException
java.io.IOException
- if there is an error reading the data
java.lang.IllegalStateException
- if there is no current row (before the
start of the table)java.lang.Object[] getRow() throws java.io.IOException
java.io.IOException
- if there is an error reading the datavoid close() throws java.io.IOException
close
is undefined.
java.io.IOException
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