uk.org.ogsadai.converters.webrowset.resultset
Class ResultSetForwardOnly

java.lang.Object
  |
  +--uk.org.ogsadai.converters.webrowset.resultset.AbstractResultSet
        |
        +--uk.org.ogsadai.converters.webrowset.resultset.ResultSetForwardOnly

All Implemented Interfaces:

java.sql.ResultSet, WebRowSetHandler

public class ResultSetForwardOnly

extends AbstractResultSet

A forward-only implementation of a java.sql.ResultSet. This implementation is suitable for larger result sets as the data is made available when scrolling through the results.

Author:

The OGSA-DAI Team.

Field Summary

private static java.lang.String	COPYRIGHT_NOTICE
private java.util.LinkedList	mBuffer
private int	mBufferSize
private boolean	mClosed
private java.util.Vector	mCurrentRow
private int	mCursor
private java.lang.Throwable	mError

Fields inherited from class uk.org.ogsadai.converters.webrowset.resultset.AbstractResultSet

mMetaData

Fields inherited from interface java.sql.ResultSet

CLOSE_CURSORS_AT_COMMIT, CONCUR_READ_ONLY, CONCUR_UPDATABLE, FETCH_FORWARD, FETCH_REVERSE, FETCH_UNKNOWN, HOLD_CURSORS_OVER_COMMIT, TYPE_FORWARD_ONLY, TYPE_SCROLL_INSENSITIVE, TYPE_SCROLL_SENSITIVE

Constructor Summary

ResultSetForwardOnly()

Method Summary

boolean	absolute(int arg0)
void	afterLast()
void	beforeFirst()
boolean	first()
int	getBufferSize() Returns the current size of the buffer.
protected java.lang.String	getColumn(int column) Returns the data of a column,
protected java.util.Vector	getCurrentRow() Returns the current row vector.
java.lang.Throwable	getError() Gets the current error state
java.sql.ResultSetMetaData	getMetaData()
int	getRow()
int	getType()
boolean	isAfterLast()
boolean	isBeforeFirst()
boolean	isFirst()
boolean	isLast()
boolean	last()
boolean	next()
boolean	previous()
void	putMetaData(java.sql.ResultSetMetaData metadata) Process or store the metadata of a WebRowSet expressed as java.sql.ResultSetMetaData.
void	putRow(java.util.Vector row) Process or store a row of a WebRowSet.
boolean	relative(int arg0)
void	setBufferSize(int size) Set the size of the buffer (the maximum number of rows that are being stored).
void	setError(java.lang.Throwable error) Sets an error when there was a problem at the input provider.

Methods inherited from class uk.org.ogsadai.converters.webrowset.resultset.AbstractResultSet

cancelRowUpdates, clearWarnings, close, deleteRow, findColumn, getArray, getArray, getAsciiStream, getAsciiStream, getBigDecimal, getBigDecimal, getBigDecimal, getBigDecimal, getBinaryStream, getBinaryStream, getBlob, getBlob, getBoolean, getBoolean, getByte, getByte, getBytes, getBytes, getCharacterStream, getCharacterStream, getClob, getClob, getConcurrency, getCursorName, getDate, getDate, getDate, getDate, getDouble, getDouble, getFetchDirection, getFetchSize, getFloat, getFloat, getInt, getInt, getLong, getLong, getObject, getObject, getObject, getObject, getRef, getRef, getShort, getShort, getStatement, getString, getString, getTime, getTime, getTime, getTime, getTimestamp, getTimestamp, getTimestamp, getTimestamp, getUnicodeStream, getUnicodeStream, getURL, getURL, getWarnings, insertRow, moveToCurrentRow, moveToInsertRow, refreshRow, rowDeleted, rowInserted, rowUpdated, setFetchDirection, setFetchSize, updateArray, updateArray, updateAsciiStream, updateAsciiStream, updateBigDecimal, updateBigDecimal, updateBinaryStream, updateBinaryStream, updateBlob, updateBlob, updateBoolean, updateBoolean, updateByte, updateByte, updateBytes, updateBytes, updateCharacterStream, updateCharacterStream, updateClob, updateClob, updateDate, updateDate, updateDouble, updateDouble, updateFloat, updateFloat, updateInt, updateInt, updateLong, updateLong, updateNull, updateNull, updateObject, updateObject, updateObject, updateObject, updateRef, updateRef, updateRow, updateShort, updateShort, updateString, updateString, updateTime, updateTime, updateTimestamp, updateTimestamp, wasNull

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

COPYRIGHT_NOTICE

private static final java.lang.String COPYRIGHT_NOTICE

See Also:

Constant Field Values

mBufferSize

private int mBufferSize

mBuffer

private java.util.LinkedList mBuffer

mClosed

private boolean mClosed

mCurrentRow

private java.util.Vector mCurrentRow

mCursor

private int mCursor

mError

private java.lang.Throwable mError

Constructor Detail

ResultSetForwardOnly

public ResultSetForwardOnly()

Method Detail

setError

public void setError(java.lang.Throwable error)

Sets an error when there was a problem at the input provider.

Parameters:

error - Problem at input provider.

getError

public java.lang.Throwable getError()

Gets the current error state

Returns:

current error or null if there is no error.

putMetaData

public void putMetaData(java.sql.ResultSetMetaData metadata)
                 throws java.sql.SQLException

Description copied from interface: WebRowSetHandler

Process or store the metadata of a WebRowSet expressed as java.sql.ResultSetMetaData.

Specified by:

putMetaData in interface WebRowSetHandler

Overrides:

putMetaData in class AbstractResultSet

Parameters:

metadata - The parsed metadata from a WebRowSet.

Throws:

java.sql.SQLException - if there is a problem with accessing the metadata object or processing it.

putRow

public void putRow(java.util.Vector row)

Description copied from interface: WebRowSetHandler

Process or store a row of a WebRowSet.

Specified by:

putRow in interface WebRowSetHandler

Specified by:

putRow in class AbstractResultSet

Parameters:

row - A Vector of objects each representing a column value.

next

public boolean next()
             throws java.sql.SQLException

Specified by:

next in interface java.sql.ResultSet

Specified by:

next in class AbstractResultSet

java.sql.SQLException

setBufferSize

public void setBufferSize(int size)

Set the size of the buffer (the maximum number of rows that are being stored).

Parameters:

size - Number of rows to buffer.

getBufferSize

public int getBufferSize()

Returns the current size of the buffer.

Returns:

maximum number of rows that are being stored.

getMetaData

public java.sql.ResultSetMetaData getMetaData()
                                       throws java.sql.SQLException

Specified by:

getMetaData in interface java.sql.ResultSet

Overrides:

getMetaData in class AbstractResultSet

java.sql.SQLException

getCurrentRow

protected java.util.Vector getCurrentRow()

Returns the current row vector.

Returns:

current row

getColumn

protected java.lang.String getColumn(int column)
                              throws java.sql.SQLException

Description copied from class: AbstractResultSet

Returns the data of a column,

Specified by:

getColumn in class AbstractResultSet

Parameters:

column - Column index.

Returns:

data

Throws:

java.sql.SQLException - if there was a problem retrieving the data.

getRow

public int getRow()
           throws java.sql.SQLException

Specified by:

getRow in interface java.sql.ResultSet

Specified by:

getRow in class AbstractResultSet

java.sql.SQLException

getType

public int getType()
            throws java.sql.SQLException

Specified by:

getType in interface java.sql.ResultSet

Specified by:

getType in class AbstractResultSet

java.sql.SQLException

afterLast

public void afterLast()
               throws java.sql.SQLException

Specified by:

afterLast in interface java.sql.ResultSet

Specified by:

afterLast in class AbstractResultSet

java.sql.SQLException

beforeFirst

public void beforeFirst()
                 throws java.sql.SQLException

Specified by:

beforeFirst in interface java.sql.ResultSet

Specified by:

beforeFirst in class AbstractResultSet

java.sql.SQLException

first

public boolean first()
              throws java.sql.SQLException

Specified by:

first in interface java.sql.ResultSet

Specified by:

first in class AbstractResultSet

java.sql.SQLException

isAfterLast

public boolean isAfterLast()
                    throws java.sql.SQLException

Specified by:

isAfterLast in interface java.sql.ResultSet

Specified by:

isAfterLast in class AbstractResultSet

java.sql.SQLException

isBeforeFirst

public boolean isBeforeFirst()
                      throws java.sql.SQLException

Specified by:

isBeforeFirst in interface java.sql.ResultSet

Specified by:

isBeforeFirst in class AbstractResultSet

java.sql.SQLException

isFirst

public boolean isFirst()
                throws java.sql.SQLException

Specified by:

isFirst in interface java.sql.ResultSet

Specified by:

isFirst in class AbstractResultSet

java.sql.SQLException

isLast

public boolean isLast()
               throws java.sql.SQLException

Specified by:

isLast in interface java.sql.ResultSet

Specified by:

isLast in class AbstractResultSet

java.sql.SQLException

last

public boolean last()
             throws java.sql.SQLException

Specified by:

last in interface java.sql.ResultSet

Specified by:

last in class AbstractResultSet

java.sql.SQLException

previous

public boolean previous()
                 throws java.sql.SQLException

Specified by:

previous in interface java.sql.ResultSet

Specified by:

previous in class AbstractResultSet

java.sql.SQLException

absolute

public boolean absolute(int arg0)
                 throws java.sql.SQLException

Specified by:

absolute in interface java.sql.ResultSet

Specified by:

absolute in class AbstractResultSet

java.sql.SQLException

relative

public boolean relative(int arg0)
                 throws java.sql.SQLException

Specified by:

relative in interface java.sql.ResultSet

Specified by:

relative in class AbstractResultSet

java.sql.SQLException