RowData

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com.mysql.jdbc
Interface RowData

All Known Implementing Classes:: RowDataDynamic, RowDataStatic

public interface RowData

This interface abstracts away how row data is accessed by the result set. It is meant to allow a static implementation (Current version), and a streaming one.

Field Summary

static int RESULT_SET_SIZE_UNKNOWN
          What's returned for the size of a result set when its size can not be determined.

Method Summary

void addRow(byte[][] row)
          Adds a row to this row data.

void afterLast()
          Moves to after last.

void beforeFirst()
          Moves to before first.

void beforeLast()
          Moves to before last so next el is the last el.

void close()
          We're done.

byte[][] getAt(int index)
          Only works on non dynamic result sets.

int getCurrentRowNumber()
          Returns the current position in the result set as a row number.

ResultSet getOwner()
          Returns the result set that 'owns' this RowData

boolean hasNext()
          Returns true if another row exsists.

boolean isAfterLast()
          Returns true if we got the last element.

boolean isBeforeFirst()
          Returns if iteration has not occured yet.

boolean isDynamic()
          Returns true if the result set is dynamic.

boolean isEmpty()
          Has no records.

boolean isFirst()
          Are we on the first row of the result set?

boolean isLast()
          Are we on the last row of the result set?

void moveRowRelative(int rows)
          Moves the current position relative 'rows' from the current position.

byte[][] next()
          Returns the next row.

void removeRow(int index)
          Removes the row at the given index.

void setCurrentRow(int rowNumber)
          Moves the current position in the result set to the given row number.

void setOwner(ResultSet rs)
          Set the result set that 'owns' this RowData

int size()
          Only works on non dynamic result sets.

Field Detail

RESULT_SET_SIZE_UNKNOWN

public static final int RESULT_SET_SIZE_UNKNOWN

What's returned for the size of a result set when its size can not be determined.

See Also:: Constant Field Values

Method Detail

isAfterLast

public boolean isAfterLast()
                    throws java.sql.SQLException

Returns true if we got the last element.

getAt

public byte[][] getAt(int index)
               throws java.sql.SQLException

Only works on non dynamic result sets.

isBeforeFirst

public boolean isBeforeFirst()
                      throws java.sql.SQLException

Returns if iteration has not occured yet.

setCurrentRow

public void setCurrentRow(int rowNumber)
                   throws java.sql.SQLException

Moves the current position in the result set to the given row number.

getCurrentRowNumber

public int getCurrentRowNumber()
                        throws java.sql.SQLException

Returns the current position in the result set as a row number.

isDynamic

public boolean isDynamic()
                  throws java.sql.SQLException

Returns true if the result set is dynamic. This means that move back and move forward won't work because we do not hold on to the records.

isEmpty

public boolean isEmpty()
                throws java.sql.SQLException

Has no records.

isFirst

public boolean isFirst()
                throws java.sql.SQLException

Are we on the first row of the result set?

isLast

public boolean isLast()
               throws java.sql.SQLException

Are we on the last row of the result set?

addRow

public void addRow(byte[][] row)
            throws java.sql.SQLException

Adds a row to this row data.

afterLast

public void afterLast()
               throws java.sql.SQLException

Moves to after last.

beforeFirst

public void beforeFirst()
                 throws java.sql.SQLException

Moves to before first.

beforeLast

public void beforeLast()
                throws java.sql.SQLException

Moves to before last so next el is the last el.

close

public void close()
           throws java.sql.SQLException

We're done.

hasNext

public boolean hasNext()
                throws java.sql.SQLException

Returns true if another row exsists.

moveRowRelative

public void moveRowRelative(int rows)
                     throws java.sql.SQLException

Moves the current position relative 'rows' from the current position.

public byte[][] next()
              throws java.sql.SQLException

Returns the next row.

removeRow

public void removeRow(int index)
               throws java.sql.SQLException

Removes the row at the given index.

size

public int size()
         throws java.sql.SQLException