DriverResultSet (C-JDBC 2.0.2 API)

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org.objectweb.cjdbc.driver
Class DriverResultSet

java.lang.Object
  org.objectweb.cjdbc.driver.DriverResultSet

All Implemented Interfaces:: java.lang.Cloneable, java.sql.ResultSet, java.io.Serializable

public class DriverResultSet
extends java.lang.Object
implements java.sql.ResultSet, java.io.Serializable, java.lang.Cloneable

A ResultSet provides access to a table of data generated by executing a Statement. The table rows are retrieved in sequence. Within a row its column values can be accessed in any order.

A ResultSet maintains a cursor pointing to its current row of data. Initially the cursor is positioned before the first row. The 'next' method moves the cursor to the next row.

The getXXX methods retrieve column values for the current row. You can retrieve values either using the index number of the column, or by using the name of the column. In general using the column index will be more efficient. Columns are numbered from 1.

For maximum portability, ResultSet columns within each row should be read in left-to-right order and each column should be read only once.

For the getXXX methods, the JDBC driver attempts to convert the underlying data to the specified Java type and returns a suitable Java value. See the JDBC specification for allowable mappings from SQL types to Java types with the ResultSet getXXX methods.

Column names used as input to getXXX methods are case insenstive. When performing a getXXX using a column name, if several columns have the same name, then the value of the first matching column will be returned. The column name option is designed to be used when column names are used in the SQL Query. For columns that are NOT explicitly named in the query, it is best to use column numbers. If column names were used there is no way for the programmer to guarentee that they actually refer to the intended columns.

A ResultSet is automatically closed by the Statement that generated it when that Statement is closed, re-executed, or is used to retrieve the next result from a sequence of multiple results.

The number, types and properties of a ResultSet's columns are provided by the ResultSetMetaData object returned by the getMetaData method.

Version:: 1.0
Author:: Mark Matthews , Emmanuel Cecchet , Alexander Laamanen , Nicolas Modrzyk , Jean-Bernard van Zuylen , Marc Herbert
See Also:: ResultSetMetaData, ResultSet, Serialized Form

Field Summary
`protected java.util.Hashtable`	`columnNameToIndex` column name -> index in ResultSet data array
`private Connection`	`connection` The driver connection we were received from (null on the controller side)
`protected int`	`currentRow` Cursor to current row
`private java.lang.String`	`cursorName` ResultSet cursor name
`protected java.util.ArrayList`	`data` The results
`private java.sql.PreparedStatement`	`deleteStatement` Statement for deleting rows with Updatable ResultSets *
`protected int`	`fetchDirection` The fetch direction (not used yet)
`protected int`	`fetchSize` The fetch size
`protected Field[]`	`fields` The fields
`protected java.util.Hashtable`	`fullColumnNameToIndex` full column name -> index in ResultSet data array
`private boolean`	`hasMoreData` True if there is more data to fetch from the controller
`private boolean`	`inserting` Indicates whether cursor is on the insert row *
`private java.sql.PreparedStatement`	`insertStatement` Statement for inserting rows with Updatable ResultSets *
`private boolean`	`isClosed`
`protected int`	`nbOfColumns` Number of columns
`protected int`	`nbOfRows` Number of rows
`protected Statement`	`owningStatement` Statement corresponding to this ResultSet, if any (not for metadata)
`private java.lang.String[]`	`primaryKeyColumns` Cache the columns forming the primary key *
`private java.sql.PreparedStatement`	`refreshStatement` Statement for refreshing rows with Updatable ResultSets *
`protected int`	`resultSetConcurrency` Concurrency for this ResultSet
`protected int`	`resultSetType` Type of ResultSet
`private SQLDataSerialization.Serializer[]`	`serializers` Pointers to column-specific de/serializer
`private static long`	`serialVersionUID`
`private java.lang.Object[]`	`tempRow` Temporary object for not yet comitted ResultSet updates *
`private static java.lang.String`	`UPDATEABLE_MESSAGE`
`private java.sql.PreparedStatement`	`updateStatement` Statement for updating rows with Updatable ResultSets *
`private boolean`	`updating` Indicates if the current row is being updated *
`protected java.sql.SQLWarning`	`warnings` the warning chain
`protected boolean`	`wasNullFlag` for wasNull()

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
`DriverResultSet(Connection conn)` Creates a new `DriverResultSet` object, deserializing it from an input stream.
`DriverResultSet(Field[] fields, java.util.ArrayList resultData)` Creates a new `DriverResultSet` from a non-null ArrayList of rows.
`DriverResultSet(Field[] fields, java.util.ArrayList resultData, boolean crsHasMoreData, java.lang.String cursorName)` Creates a new `DriverResultSet` object from information we get back from a ControllerResultSet.

Method Summary
`boolean`	`absolute(int row)` JDBC 2.0 Move to an absolute row number in the result set.
`void`	`afterLast()` JDBC 2.0 Moves to the end of the result set, just after the last row.
`void`	`beforeFirst()` JDBC 2.0 Moves to the front of the result set, just before the first row.
`private void`	`buildDeleteStatement()` Builds a delete statement for deleting rows with Updatable ResultSets
`private void`	`buildIndexMapping()` Builds a hash between column names and their indices for fast retrieval.
`private void`	`buildInsertStatement()` Builds a insert statement for inserting rows with Updatable ResultSets
`private void`	`buildRefreshStatement()` Builds a select statement for refreshing rows in Updatable ResultSets
`private void`	`buildUpdateStatement()` Builds an update statement for updating rows with Updatable ResultSets
`void`	`cancelRowUpdates()` JDBC 2.0 The cancelRowUpdates() method may be called after calling an updateXXX() method(s) and before calling updateRow() to rollback the updates made to a row.
`private void`	`checkIfClosed()` Check if the ResultSet if closed and throws a SQLException if so.
`private void`	`checkRowAndColPosAndSetNullFlag(int columnIndex)` Sanity checks for result parsing
`private void`	`checkRowPos()` Checks that the cursor is on row in the ResultSet
`private void`	`checkUpdatability()` Basic checks for Updatable ResultSets
`private void`	`checkUpdateFlagAndPrepareUpdateIfNeeded()` Checks that the update flag is set when updating a row.
`void`	`clearWarnings()` After this call, getWarnings returns null until a new warning is reported for this ResultSet
`void`	`close()` Closes the remote ResultSet if the ResultSet was streamed else just closes the ResultSet locally.
`void`	`deleteRow()` JDBC 2.0 Delete the current row from the result set and the underlying database.
`private void`	`extractPrimaryKey()` Retrieves the primary key for the table referenced by this ResultSet
`int`	`findColumn(java.lang.String columnName)` Map a `ResultSet` column name to a `ResultSet` column index
`boolean`	`first()` JDBC 2.0 Moves to the first row in the result set.
`java.sql.Array`	`getArray(int columnIndex)` JDBC 2.0 Gets an array column.
`java.sql.Array`	`getArray(java.lang.String colName)` JDBC 2.0 Get an array column.
`java.io.InputStream`	`getAsciiStream(int columnIndex)` A column value can be retrieved as a stream of ASCII characters and then read in chunks from the stream.
`java.io.InputStream`	`getAsciiStream(java.lang.String columnName)`
`java.math.BigDecimal`	`getBigDecimal(int columnIndex)` JDBC 2.0 Get the value of a column in the current row as a java.math.BigDecimal object.
`java.math.BigDecimal`	`getBigDecimal(int columnIndex, int scale)` Deprecated.
`java.math.BigDecimal`	`getBigDecimal(java.lang.String columnName)`
`java.math.BigDecimal`	`getBigDecimal(java.lang.String columnName, int scale)` Deprecated.
`java.io.InputStream`	`getBinaryStream(int columnIndex)` A column value can also be retrieved as a binary strea.
`java.io.InputStream`	`getBinaryStream(java.lang.String columnName)`
`java.sql.Blob`	`getBlob(int columnIndex)` JDBC 2.0 Gets a BLOB column.
`java.sql.Blob`	`getBlob(java.lang.String colName)` JDBC 2.0 Get a BLOB column.
`boolean`	`getBoolean(int columnIndex)` Get the value of a column in the current row as a Java boolean
`boolean`	`getBoolean(java.lang.String columnName)`
`byte`	`getByte(int columnIndex)` Get the value of a column in the current row as a Java byte.
`byte`	`getByte(java.lang.String columnName)`
`byte[]`	`getBytes(int columnIndex)` Get the value of a column in the current row as a Java byte array.
`byte[]`	`getBytes(java.lang.String columnName)`
`java.io.Reader`	`getCharacterStream(int columnIndex)`
`java.io.Reader`	`getCharacterStream(java.lang.String columnName)`
`java.sql.Clob`	`getClob(int columnIndex)` JDBC 2.0 Gets a CLOB column.
`java.sql.Clob`	`getClob(java.lang.String colName)` JDBC 2.0 Get a CLOB column.
`int`	`getConcurrency()` JDBC 2.0 Return the concurrency of this result set.
`java.lang.String`	`getCursorName()`
`java.sql.Date`	`getDate(int columnIndex)` Get the value of a column in the current row as a java.sql.Date object
`java.sql.Date`	`getDate(int columnIndex, java.util.Calendar cal)` JDBC 2.0 Get the value of a column in the current row as a java.sql.Date object.
`java.sql.Date`	`getDate(java.lang.String columnName)`
`java.sql.Date`	`getDate(java.lang.String columnName, java.util.Calendar cal)` Get the value of a column in the current row as a java.sql.Date object.
`double`	`getDouble(int columnIndex)` Get the value of a column in the current row as a Java double.
`double`	`getDouble(java.lang.String columnName)`
`int`	`getFetchDirection()` JDBC 2.0 Return the fetch direction for this result set.
`int`	`getFetchSize()` JDBC 2.0 Return the fetch size for this result set.
`float`	`getFloat(int columnIndex)` Get the value of a column in the current row as a Java float.
`float`	`getFloat(java.lang.String columnName)`
`int`	`getInt(int columnIndex)` Get the value of a column in the current row as a Java int.
`int`	`getInt(java.lang.String columnName)`
`long`	`getLong(int columnIndex)` Get the value of a column in the current row as a Java long.
`long`	`getLong(java.lang.String columnName)`
`java.sql.ResultSetMetaData`	`getMetaData()` The numbers, types and properties of a `ResultSet`'s columns are provided by the `getMetaData` method
`java.lang.Object`	`getObject(int columnIndex)` Get the value of a column in the current row as a Java object This method will return the value of the given column as a Java object.
`java.lang.Object`	`getObject(int i, java.util.Map map)` JDBC 2.0 Returns the value of column as a Java object.
`java.lang.Object`	`getObject(java.lang.String columnName)` Get the value of a column in the current row as a Java object This method will return the value of the given column as a Java object.
`java.lang.Object`	`getObject(java.lang.String colName, java.util.Map map)` JDBC 2.0 Returns the value of column as a Java object.
`java.sql.Ref`	`getRef(int i)` JDBC 2.0 Get a REF(<structured-type>) column.
`java.sql.Ref`	`getRef(java.lang.String colName)` JDBC 2.0 Get a REF(<structured-type>) column.
`int`	`getRow()` JDBC 2.0 Determine the current row number.
`short`	`getShort(int columnIndex)` Get the value of a column in the current row as a Java short.
`short`	`getShort(java.lang.String columnName)`
`java.sql.Statement`	`getStatement()` JDBC 2.0 Return the `Statement` that produced the `ResultSet`.
`java.lang.String`	`getString(int columnIndex)` Get the value of a column in the current row as a Java String
`java.lang.String`	`getString(java.lang.String columnName)` The following routines simply convert the columnName into a columnIndex and then call the appropriate routine above.
`java.sql.Time`	`getTime(int columnIndex)` Get the value of a column in the current row as a java.sql.Time object
`java.sql.Time`	`getTime(int columnIndex, java.util.Calendar cal)` Get the value of a column in the current row as a java.sql.Time object.
`java.sql.Time`	`getTime(java.lang.String columnName)`
`java.sql.Time`	`getTime(java.lang.String columnName, java.util.Calendar cal)` Get the value of a column in the current row as a java.sql.Time object.
`java.sql.Timestamp`	`getTimestamp(int columnIndex)` Get the value of a column in the current row as a java.sql.Timestamp object
`java.sql.Timestamp`	`getTimestamp(int columnIndex, java.util.Calendar cal)` Get the value of a column in the current row as a java.sql.Timestamp object.
`java.sql.Timestamp`	`getTimestamp(java.lang.String columnName)`
`java.sql.Timestamp`	`getTimestamp(java.lang.String columnName, java.util.Calendar cal)` Get the value of a column in the current row as a java.sql.Timestamp object.
`int`	`getType()` JDBC 2.0 Return the type of this result set.
`java.io.InputStream`	`getUnicodeStream(int columnIndex)` Deprecated.
`java.io.InputStream`	`getUnicodeStream(java.lang.String columnName)` Deprecated.
`java.net.URL`	`getURL(int columnIndex)` Retrieves the value of the designated column in the current row of this `ResultSet` object as a `java.net.URL` object in the Java programming language.
`java.net.URL`	`getURL(java.lang.String columnName)` Retrieves the value of the designated column in the current row of this `ResultSet` object as a `java.net.URL` object in the Java programming language.
`java.sql.SQLWarning`	`getWarnings()` The first warning reported by calls on this ResultSet is returned.
`private void`	`initSerializers()` Initialize serializers based on the analysis of actual Java Objects of the ResultSet to send (typically issued by backend's driver readObject() method).
`void`	`insertRow()` JDBC 2.0 Insert the contents of the insert row into the result set and the database.
`boolean`	`isAfterLast()` JDBC 2.0 Determine if the cursor is after the last row in the result set.
`boolean`	`isBeforeFirst()` JDBC 2.0.
`boolean`	`isFirst()` JDBC 2.0 Determine if the cursor is on the first row of the result set.
`boolean`	`isLast()` JDBC 2.0 Determine if the cursor is on the last row of the result set.
`boolean`	`last()` JDBC 2.0 Moves to the last row in the result set.
`void`	`moveToCurrentRow()` JDBC 2.0 Move the cursor to the remembered cursor position, usually the current row.
`void`	`moveToInsertRow()` JDBC 2.0 Move to the insert row.
`boolean`	`next()` A ResultSet is initially positioned before its first row, the first call to next makes the first row the current row; the second call makes the second row the current row, etc.
`boolean`	`prev()` The prev method is not part of JDBC, but because of the architecture of this driver it is possible to move both forward and backward within the result set.
`boolean`	`previous()` JDBC 2.0 Moves to the previous row in the result set.
`(package private) void`	`receiveRows(CJDBCInputStream input)` De-serialize only data rows, not any metadata.
`void`	`refreshRow()` JDBC 2.0 Refresh the value of the current row with its current value in the database.
`boolean`	`relative(int rows)` JDBC 2.0 Moves a relative number of rows, either positive or negative.
`boolean`	`rowDeleted()` JDBC 2.0 Determine if this row has been deleted.
`boolean`	`rowInserted()` JDBC 2.0 Determine if the current row has been inserted.
`boolean`	`rowUpdated()` JDBC 2.0 Determine if the current row has been updated.
`void`	`sendRowsToStream(CJDBCOutputStream output)` Serialize only rows, not any metadata.
`void`	`sendToStream(CJDBCOutputStream output)` Serialize the `DriverResultSet` on the output stream by sending only the needed parameters to reconstruct it on the driver.
`void`	`setData(java.util.ArrayList newData)` Set the ResultSet data with the given ArrayList.
`void`	`setFetchDirection(int direction)` JDBC 2.0 Give a hint as to the direction in which the rows in this result set will be processed.
`void`	`setFetchSize(int rows)` JDBC 2.0 Give the JDBC driver a hint as to the number of rows that should be fetched from the database when more rows are needed for this result set.
`void`	`setHasMoreData(boolean hasMore)` Set the hasMoreData boolean (is there more data to fetch from the controller).
`protected void`	`setStatement(Statement stmt)` Set the statement.
`java.lang.String`	`toString()`
`void`	`updateArray(int columnIndex, java.sql.Array x)` Updates the designated column with a `java.sql.Array` value.
`void`	`updateArray(java.lang.String columnName, java.sql.Array x)` Updates the designated column with a `java.sql.Array` value.
`void`	`updateAsciiStream(int columnIndex, java.io.InputStream x, int length)` JDBC 2.0 Update a column with an ascii stream value.
`void`	`updateAsciiStream(java.lang.String columnName, java.io.InputStream x, int length)` JDBC 2.0 Update a column with an ascii stream value.
`void`	`updateBigDecimal(int columnIndex, java.math.BigDecimal x)` JDBC 2.0 Update a column with a BigDecimal value.
`void`	`updateBigDecimal(java.lang.String columnName, java.math.BigDecimal x)` JDBC 2.0 Update a column with a BigDecimal value.
`void`	`updateBinaryStream(int columnIndex, java.io.InputStream x, int length)` JDBC 2.0 Update a column with a binary stream value.
`void`	`updateBinaryStream(java.lang.String columnName, java.io.InputStream x, int length)` JDBC 2.0 Update a column with a binary stream value.
`void`	`updateBlob(int columnIndex, java.sql.Blob x)` Updates the designated column with a `java.sql.Blob` value.
`void`	`updateBlob(java.lang.String columnName, java.sql.Blob x)` Updates the designated column with a `java.sql.Blob` value.
`void`	`updateBoolean(int columnIndex, boolean x)` JDBC 2.0 Update a column with a boolean value.
`void`	`updateBoolean(java.lang.String columnName, boolean x)` JDBC 2.0 Update a column with a boolean value.
`void`	`updateByte(int columnIndex, byte x)` JDBC 2.0 Update a column with a byte value.
`void`	`updateByte(java.lang.String columnName, byte x)` JDBC 2.0 Update a column with a byte value.
`void`	`updateBytes(int columnIndex, byte[] x)` JDBC 2.0 Update a column with a byte array value.
`void`	`updateBytes(java.lang.String columnName, byte[] x)` JDBC 2.0 Update a column with a byte array value.
`void`	`updateCharacterStream(int columnIndex, java.io.Reader x, int length)` JDBC 2.0 Update a column with a character stream value.
`void`	`updateCharacterStream(java.lang.String columnName, java.io.Reader reader, int length)` JDBC 2.0 Update a column with a character stream value.
`void`	`updateClob(int columnIndex, java.sql.Clob x)` Updates the designated column with a `java.sql.Clob` value.
`void`	`updateClob(java.lang.String columnName, java.sql.Clob x)` Updates the designated column with a `java.sql.Clob` value.
`void`	`updateDate(int columnIndex, java.sql.Date x)` JDBC 2.0 Update a column with a Date value.
`void`	`updateDate(java.lang.String columnName, java.sql.Date x)` JDBC 2.0 Update a column with a Date value.
`void`	`updateDouble(int columnIndex, double x)` JDBC 2.0 Update a column with a Double value.
`void`	`updateDouble(java.lang.String columnName, double x)` JDBC 2.0 Update a column with a double value.
`void`	`updateFloat(int columnIndex, float x)` JDBC 2.0 Update a column with a float value.
`void`	`updateFloat(java.lang.String columnName, float x)` JDBC 2.0 Update a column with a float value.
`void`	`updateInt(int columnIndex, int x)` JDBC 2.0 Update a column with an integer value.
`void`	`updateInt(java.lang.String columnName, int x)` JDBC 2.0 Update a column with an integer value.
`void`	`updateLong(int columnIndex, long x)` JDBC 2.0 Update a column with a long value.
`void`	`updateLong(java.lang.String columnName, long x)` JDBC 2.0 Update a column with a long value.
`void`	`updateNull(int columnIndex)` JDBC 2.0 Give a nullable column a null value.
`void`	`updateNull(java.lang.String columnName)` JDBC 2.0 Update a column with a null value.
`void`	`updateObject(int columnIndex, java.lang.Object x)` JDBC 2.0 Update a column with an Object value.
`void`	`updateObject(int columnIndex, java.lang.Object x, int scale)` JDBC 2.0 Update a column with an Object value.
`void`	`updateObject(java.lang.String columnName, java.lang.Object x)` JDBC 2.0 Update a column with an Object value.
`void`	`updateObject(java.lang.String columnName, java.lang.Object x, int scale)` JDBC 2.0 Update a column with an Object value.
`void`	`updateRef(int columnIndex, java.sql.Ref x)` Updates the designated column with a `java.sql.Ref` value.
`void`	`updateRef(java.lang.String columnName, java.sql.Ref x)` Updates the designated column with a `java.sql.Ref` value.
`void`	`updateRow()` JDBC 2.0 Update the underlying database with the new contents of the current row.
`void`	`updateShort(int columnIndex, short x)` JDBC 2.0 Update a column with a short value.
`void`	`updateShort(java.lang.String columnName, short x)` JDBC 2.0 Update a column with a short value.
`void`	`updateString(int columnIndex, java.lang.String x)` JDBC 2.0 Update a column with a String value.
`void`	`updateString(java.lang.String columnName, java.lang.String x)` JDBC 2.0 Update a column with a String value.
`void`	`updateTime(int columnIndex, java.sql.Time x)` JDBC 2.0 Update a column with a Time value.
`void`	`updateTime(java.lang.String columnName, java.sql.Time x)` JDBC 2.0 Update a column with a Time value.
`void`	`updateTimestamp(int columnIndex, java.sql.Timestamp x)` JDBC 2.0 Update a column with a Timestamp value.
`void`	`updateTimestamp(java.lang.String columnName, java.sql.Timestamp x)` JDBC 2.0 Update a column with a Timestamp value.
`boolean`	`wasNull()` A column may have the value of SQL NULL; wasNull() reports whether the last column read had this special value.

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:: Constant Field Values

currentRow

protected int currentRow

Cursor to current row

nbOfRows

protected int nbOfRows

Number of rows

nbOfColumns

protected int nbOfColumns

Number of columns

data

protected java.util.ArrayList data

The results

hasMoreData

private boolean hasMoreData

True if there is more data to fetch from the controller

fetchDirection

protected int fetchDirection

The fetch direction (not used yet)

fetchSize

protected int fetchSize

The fetch size

cursorName

private java.lang.String cursorName

ResultSet cursor name

fields

protected Field[] fields

The fields

serializers

private SQLDataSerialization.Serializer[] serializers

Pointers to column-specific de/serializer

wasNullFlag

protected boolean wasNullFlag

for wasNull()

columnNameToIndex

protected transient java.util.Hashtable columnNameToIndex

column name -> index in ResultSet data array

fullColumnNameToIndex

protected transient java.util.Hashtable fullColumnNameToIndex

full column name -> index in ResultSet data array

resultSetType

protected int resultSetType

Type of ResultSet

resultSetConcurrency

protected int resultSetConcurrency

Concurrency for this ResultSet

warnings

protected java.sql.SQLWarning warnings

the warning chain

owningStatement

protected transient Statement owningStatement

Statement corresponding to this ResultSet, if any (not for metadata)

connection

private final Connection connection

The driver connection we were received from (null on the controller side)

isClosed

private boolean isClosed

deleteStatement

private transient java.sql.PreparedStatement deleteStatement

Statement for deleting rows with Updatable ResultSets *

insertStatement

private transient java.sql.PreparedStatement insertStatement

Statement for inserting rows with Updatable ResultSets *

refreshStatement

private transient java.sql.PreparedStatement refreshStatement

Statement for refreshing rows with Updatable ResultSets *

updateStatement

private transient java.sql.PreparedStatement updateStatement

Statement for updating rows with Updatable ResultSets *

inserting

private transient boolean inserting

Indicates whether cursor is on the insert row *

updating

private transient boolean updating

Indicates if the current row is being updated *

tempRow

private transient java.lang.Object[] tempRow

Temporary object for not yet comitted ResultSet updates *

primaryKeyColumns

private transient java.lang.String[] primaryKeyColumns

Cache the columns forming the primary key *

UPDATEABLE_MESSAGE

private static final java.lang.String UPDATEABLE_MESSAGE

See Also:: Constant Field Values

Constructor Detail

DriverResultSet

public DriverResultSet(Field[] fields,
                       java.util.ArrayList resultData)
                throws java.lang.IllegalArgumentException

Creates a new DriverResultSet from a non-null ArrayList of rows. Allowed only on the controller side. We could use a resultset factory instead in order to be more cleanly isolated from the controller.
Parameters:: fields - an array of Field objects (basically, the ResultSet meta data); resultData - ArrayList of Object[] rows.
Throws:: java.lang.IllegalArgumentException - if resultData argument is null

DriverResultSet

public DriverResultSet(Field[] fields,
                       java.util.ArrayList resultData,
                       boolean crsHasMoreData,
                       java.lang.String cursorName)
                throws java.lang.IllegalArgumentException

Creates a new DriverResultSet object from information we get back from a ControllerResultSet. Allowed only on the controller side.
Parameters:: fields - an array of Field objects (basically, the ResultSet meta data); resultData - ArrayList of the actual data. Cannot be null.; crsHasMoreData - true if remote ControllerResultSet has more data to fetch; cursorName - cursor name for a streamable ResultSet
Throws:: java.lang.IllegalArgumentException - if resultData argument is null

DriverResultSet

public DriverResultSet(Connection conn)
                throws java.io.IOException,
                       ProtocolException

Creates a new DriverResultSet object, deserializing it from an input stream. Has to mirror the serialization method below.
Parameters:: conn - the connection we read from and belong to
Throws:: java.io.IOException - if a network problem occurs; ProtocolException - if a protocol error occurs

Method Detail

public boolean next()
             throws java.sql.SQLException

A ResultSet is initially positioned before its first row, the first call to next makes the first row the current row; the second call makes the second row the current row, etc.

If an input stream from the previous row is open, it is implicitly closed. The ResultSet's warning chain is cleared when a new row is read

Specified by:: next in interface java.sql.ResultSet

Returns:: true if the new current is valid; false if there are no more rows
Throws:: java.sql.SQLException - if a database access error occurs

public boolean prev()
             throws java.sql.SQLException

The prev method is not part of JDBC, but because of the architecture of this driver it is possible to move both forward and backward within the result set.

If an input stream from the previous row is open, it is implicitly closed. The ResultSet's warning chain is cleared when a new row is read

Returns:: true if the new current is valid; false if there are no more rows
Throws:: java.sql.SQLException - if a database access error occurs

isBeforeFirst

public boolean isBeforeFirst()
                      throws java.sql.SQLException

JDBC 2.0.

Determine if the cursor is before the first row in the result set.

Specified by:: isBeforeFirst in interface java.sql.ResultSet

Returns:: true if before the first row, false otherwise. Returns false when the result set contains no rows.
Throws:: java.sql.SQLException - if a database-access error occurs.

isAfterLast

public boolean isAfterLast()
                    throws java.sql.SQLException

JDBC 2.0

Determine if the cursor is after the last row in the result set.

Specified by:: isAfterLast in interface java.sql.ResultSet

Returns:: true if after the last row, false otherwise. Returns false when the result set contains no rows.
Throws:: java.sql.SQLException - if a database-access error occurs.

isFirst

public boolean isFirst()
                throws java.sql.SQLException

JDBC 2.0

Determine if the cursor is on the first row of the result set.

Specified by:: isFirst in interface java.sql.ResultSet

Returns:: true if on the first row, false otherwise.
Throws:: java.sql.SQLException - if a database-access error occurs.

isLast

public boolean isLast()
               throws java.sql.SQLException

JDBC 2.0

Determine if the cursor is on the last row of the result set. Note: Calling isLast() may be expensive since the JDBC driver might need to fetch ahead one row in order to determine whether the current row is the last row in the result set.

Specified by:: isLast in interface java.sql.ResultSet

Returns:: true if on the last row, false otherwise.
Throws:: java.sql.SQLException - if a database-access error occurs.

beforeFirst

public void beforeFirst()
                 throws java.sql.SQLException

JDBC 2.0

Moves to the front of the result set, just before the first row. Has no effect if the result set contains no rows.

Specified by:: beforeFirst in interface java.sql.ResultSet

Throws:: java.sql.SQLException - if a database-access error occurs, or result set type is TYPE_FORWARD_ONLY

afterLast

public void afterLast()
               throws java.sql.SQLException

JDBC 2.0

Moves to the end of the result set, just after the last row. Has no effect if the result set contains no rows.

Specified by:: afterLast in interface java.sql.ResultSet

Throws:: java.sql.SQLException - if a database-access error occurs, or result set type is TYPE_FORWARD_ONLY.

first

public boolean first()
              throws java.sql.SQLException

JDBC 2.0

Moves to the first row in the result set.

Specified by:: first in interface java.sql.ResultSet

Returns:: true if on a valid row, false if no rows in the result set.
Throws:: java.sql.SQLException - if a database-access error occurs, or result set type is TYPE_FORWARD_ONLY.

last

public boolean last()
             throws java.sql.SQLException

JDBC 2.0

Moves to the last row in the result set.

Specified by:: last in interface java.sql.ResultSet

Returns:: true if on a valid row, false if no rows in the result set.
Throws:: java.sql.SQLException - if a database-access error occurs, or result set type is TYPE_FORWARD_ONLY.

getRow

public int getRow()
           throws java.sql.SQLException

JDBC 2.0

Determine the current row number. The first row is number 1, the second number 2, etc.

Specified by:: getRow in interface java.sql.ResultSet

Returns:: the current row number, else return 0 if there is no current row
Throws:: java.sql.SQLException - if a database-access error occurs.

absolute

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

JDBC 2.0

Move to an absolute row number in the result set.

If row is positive, moves to an absolute row with respect to the beginning of the result set. The first row is row 1, the second is row 2, etc.

If row is negative, moves to an absolute row position with respect to the end of result set. For example, calling absolute(-1) positions the cursor on the last row, absolute(-2) indicates the next-to-last row, etc.

An attempt to position the cursor beyond the first/last row in the result set, leaves the cursor before/after the first/last row, respectively.

Note: Calling absolute(1) is the same as calling first(). Calling absolute(-1) is the same as calling last().

Specified by:: absolute in interface java.sql.ResultSet

Parameters:: row - the row to move to
Returns:: true if on the result set, false if off.
Throws:: java.sql.SQLException - if a database-access error occurs, or row is 0, or result set type is TYPE_FORWARD_ONLY.

relative

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

JDBC 2.0

Moves a relative number of rows, either positive or negative. Attempting to move beyond the first/last row in the result set positions the cursor before/after the the first/last row. Calling relative(0) is valid, but does not change the cursor position.

Note: Calling relative(1) is different than calling next() since is makes sense to call next() when there is no current row, for example, when the cursor is positioned before the first row or after the last row of the result set.

Specified by:: relative in interface java.sql.ResultSet

Parameters:: rows - the number of rows
Returns:: true if on a row, false otherwise.
Throws:: java.sql.SQLException - if a database-access error occurs, or there is no current row, or result set type is TYPE_FORWARD_ONLY.

public boolean previous()
                 throws java.sql.SQLException

JDBC 2.0

Moves to the previous row in the result set.

Note: previous() is not the same as relative(-1) since it makes sense to call previous() when there is no current row.

Specified by:: previous in interface java.sql.ResultSet

Returns:: true if on a valid row, false if off the result set.
Throws:: java.sql.SQLException - if a database-access error occurs, or result set type is TYPE_FORWAR_DONLY.

setFetchDirection

public void setFetchDirection(int direction)
                       throws java.sql.SQLException

JDBC 2.0 Give a hint as to the direction in which the rows in this result set will be processed. The initial value is determined by the statement that produced the result set. The fetch direction may be changed at any time.

Specified by:: setFetchDirection in interface java.sql.ResultSet

Parameters:: direction - the fetch direction
Throws:: java.sql.SQLException - if a database-access error occurs, or the result set type is TYPE_FORWARD_ONLY and direction is not FETCH_FORWARD. MM.MySQL actually ignores this, because it has the whole result set anyway, so the direction is immaterial.

getFetchDirection

public int getFetchDirection()
                      throws java.sql.SQLException

JDBC 2.0 Return the fetch direction for this result set.

Specified by:: getFetchDirection in interface java.sql.ResultSet

Returns:: the fetch direction
Throws:: java.sql.SQLException - if a database-access error occurs

setFetchSize

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

JDBC 2.0 Give the JDBC driver a hint as to the number of rows that should be fetched from the database when more rows are needed for this result set. If the fetch size specified is zero, then the JDBC driver ignores the value, and is free to make its own best guess as to what the fetch size should be. The default value is set by the statement that creates the result set. The fetch size may be changed at any time.

Specified by:: setFetchSize in interface java.sql.ResultSet

Parameters:: rows - the number of rows to fetch
Throws:: java.sql.SQLException - if a database-access error occurs, or the condition 0 <= rows <= statement.getMaxRows() is not satisfied. Currently ignored by this driver.

getFetchSize

public int getFetchSize()
                 throws java.sql.SQLException

JDBC 2.0 Return the fetch size for this result set.

Specified by:: getFetchSize in interface java.sql.ResultSet

Returns:: the fetch size
Throws:: java.sql.SQLException - if a database-access error occurs

getString

public java.lang.String getString(int columnIndex)
                           throws java.sql.SQLException

Get the value of a column in the current row as a Java String

Specified by:: getString in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2...
Returns:: the column value, null for SQL NULL
Throws:: java.sql.SQLException - if a database access error occurs

getBoolean

public boolean getBoolean(int columnIndex)
                   throws java.sql.SQLException

Get the value of a column in the current row as a Java boolean

Specified by:: getBoolean in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2...
Returns:: the column value, false for SQL NULL
Throws:: java.sql.SQLException - if a database access error occurs

getShort

public short getShort(int columnIndex)
               throws java.sql.SQLException

Get the value of a column in the current row as a Java short.

Specified by:: getShort in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2,...
Returns:: the column value; 0 if SQL NULL
Throws:: java.sql.SQLException - if a database access error occurs

getInt

public int getInt(int columnIndex)
           throws java.sql.SQLException

Get the value of a column in the current row as a Java int.

Specified by:: getInt in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2,...
Returns:: the column value; 0 if SQL NULL
Throws:: java.sql.SQLException - if a database access error occurs

getLong

public long getLong(int columnIndex)
             throws java.sql.SQLException

Get the value of a column in the current row as a Java long.

Specified by:: getLong in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2,...
Returns:: the column value; 0 if SQL NULL
Throws:: java.sql.SQLException - if a database access error occurs

getFloat

public float getFloat(int columnIndex)
               throws java.sql.SQLException

Get the value of a column in the current row as a Java float.

Specified by:: getFloat in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2,...
Returns:: the column value; 0 if SQL NULL
Throws:: java.sql.SQLException - if a database access error occurs

getDouble

public double getDouble(int columnIndex)
                 throws java.sql.SQLException

Get the value of a column in the current row as a Java double.

Specified by:: getDouble in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2,...
Returns:: the column value; 0 if SQL NULL
Throws:: java.sql.SQLException - if a database access error occurs

getBigDecimal

public java.math.BigDecimal getBigDecimal(int columnIndex,
                                          int scale)
                                   throws java.sql.SQLException

Deprecated.

Get the value of a column in the current row as a java.lang.BigDecimal object

Specified by:: getBigDecimal in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2...; scale - the number of digits to the right of the decimal
Returns:: the column value; if the value is SQL NULL, null
Throws:: java.sql.SQLException - if a database access error occurs

getBytes

public byte[] getBytes(int columnIndex)
                throws java.sql.SQLException

Get the value of a column in the current row as a Java byte array.

Be warned If the blob is huge, then you may run out of memory.

Specified by:: getBytes in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2, ...
Returns:: the column value; if the value is SQL NULL, the result is null
Throws:: java.sql.SQLException - if a database access error occurs

getDate

public java.sql.Date getDate(int columnIndex)
                      throws java.sql.SQLException

Get the value of a column in the current row as a java.sql.Date object

Specified by:: getDate in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2...
Returns:: the column value; null if SQL NULL
Throws:: java.sql.SQLException - if a database access error occurs

getTime

public java.sql.Time getTime(int columnIndex)
                      throws java.sql.SQLException

Get the value of a column in the current row as a java.sql.Time object

Specified by:: getTime in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2...
Returns:: the column value; null if SQL NULL
Throws:: java.sql.SQLException - if a database access error occurs

getTimestamp

public java.sql.Timestamp getTimestamp(int columnIndex)
                                throws java.sql.SQLException

Get the value of a column in the current row as a java.sql.Timestamp object

Specified by:: getTimestamp in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2...
Returns:: the column value; null if SQL NULL
Throws:: java.sql.SQLException - if a database access error occurs

getAsciiStream

public java.io.InputStream getAsciiStream(int columnIndex)
                                   throws java.sql.SQLException

A column value can be retrieved as a stream of ASCII characters and then read in chunks from the stream. This method is particulary suitable for retrieving large LONGVARCHAR values. The JDBC driver will do any necessary conversion from the database format into ASCII.

Note: All the data in the returned stream must be read prior to getting the value of any other column. The next call to a get method implicitly closes the stream. Also, a stream may return 0 for available() whether there is data available or not.

Specified by:: getAsciiStream in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2, ...
Returns:: a Java InputStream that delivers the database column value as a stream of one byte ASCII characters. If the value is SQL NULL then the result is null
Throws:: java.sql.SQLException - if a database access error occurs
See Also:: getBinaryStream(int)

getUnicodeStream

public java.io.InputStream getUnicodeStream(int columnIndex)
                                     throws java.sql.SQLException

Deprecated.

A column value can also be retrieved as a stream of Unicode characters. We implement this as a binary stream.

Specified by:: getUnicodeStream in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2...
Returns:: a Java InputStream that delivers the database column value as a stream of two byte Unicode characters. If the value is SQL NULL, then the result is null
Throws:: java.sql.SQLException - if a database access error occurs
See Also:: getAsciiStream(int), getBinaryStream(int)

getBinaryStream

public java.io.InputStream getBinaryStream(int columnIndex)
                                    throws java.sql.SQLException

A column value can also be retrieved as a binary strea. This method is suitable for retrieving LONGVARBINARY values.

Specified by:: getBinaryStream in interface java.sql.ResultSet

Parameters:: columnIndex - the first column is 1, the second is 2...
Returns:: a Java InputStream that delivers the database column value as a stream of bytes. If the value is SQL NULL, then the result is null
Throws:: java.sql.SQLException - if a database access error occurs
See Also:: getAsciiStream(int), getUnicodeStream(int)

getString

public java.lang.String getString(java.lang.String columnName)
                           throws java.sql.SQLException

The following routines simply convert the columnName into a columnIndex and then call the appropriate routine above.

org.objectweb.cjdbc.driver Class DriverResultSet

serialVersionUID

currentRow

nbOfRows

nbOfColumns

data

hasMoreData

fetchDirection

fetchSize

cursorName

fields

serializers

wasNullFlag

columnNameToIndex

fullColumnNameToIndex

resultSetType

resultSetConcurrency

warnings

owningStatement

connection

isClosed

deleteStatement

insertStatement

refreshStatement

updateStatement

inserting

updating

tempRow

primaryKeyColumns

UPDATEABLE_MESSAGE

DriverResultSet

DriverResultSet

DriverResultSet

next

prev

isBeforeFirst

isAfterLast

isFirst

isLast

beforeFirst

afterLast

first

last

getRow

absolute

relative

previous

setFetchDirection

getFetchDirection

setFetchSize

getFetchSize

getString

getBoolean

getShort

getInt

getLong

getFloat

getDouble

getBigDecimal

getBytes

getDate

getTime

getTimestamp

getAsciiStream

getUnicodeStream

getBinaryStream

getString

org.objectweb.cjdbc.driver
Class DriverResultSet