org.apache.derby.impl.sql.execute

Class ValueRow

java.lang.Object

org.apache.derby.impl.sql.execute.ValueRow

All Implemented Interfaces:

ExecRow, Row

Direct Known Subclasses:

IndexRow

public class ValueRow
extends java.lang.Object
implements ExecRow

Basic implementation of ExecRow.

Field Summary

Fields

Modifier and Type	Field and Description
private DataValueDescriptor[]	column
private int	ncols

Constructor Summary

Constructors

Constructor and Description
ValueRow(int ncols) Make a value row with a designated number of column slots.

Method Summary

Modifier and Type	Method and Description
DataValueDescriptor	cloneColumn(int columnPosition) Get a clone of a DataValueDescriptor from an ExecRow.
(package private) ExecRow	cloneMe()
ExecRow	getClone() Clone the Row and its contents.
ExecRow	getClone(FormatableBitSet clonedCols) Clone the Row.
DataValueDescriptor	getColumn(int position) Get a DataValueDescriptor in a Row by ordinal position (1-based).
ExecRow	getNewNullRow() Get a new row with the same columns type as this one, containing nulls.
void	getNewObjectArray() Get a new DataValueDescriptor[]
DataValueDescriptor[]	getRowArray() Get the array form of the row that Access expects.
DataValueDescriptor[]	getRowArrayClone() Get a clone of the array form of the row that Access expects.
int	nColumns()
protected void	realloc(int ncols)
void	resetRowArray() Reset all columns in the row array to null values.
void	setColumn(int position, DataValueDescriptor col) Set a DataValueDescriptor in a Row by ordinal position (1-based).
void	setRowArray(DataValueDescriptor[] value) Set the row array
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

column

private DataValueDescriptor[] column

ncols

private int ncols

Constructor Detail

ValueRow

public ValueRow(int ncols)

Make a value row with a designated number of column slots.

Parameters:

ncols - number of columns to allocate

Method Detail

nColumns

public int nColumns()

Specified by:

nColumns in interface Row

getNewObjectArray

public void getNewObjectArray()

Description copied from interface: ExecRow

Get a new DataValueDescriptor[]

Specified by:

getNewObjectArray in interface ExecRow

getColumn

public DataValueDescriptor getColumn(int position)

Description copied from interface: Row

Get a DataValueDescriptor in a Row by ordinal position (1-based).

Specified by:

getColumn in interface Row

Parameters:

position - The ordinal position of the column.

Returns:

The DataValueDescriptor, null if no such column exists

setColumn

public void setColumn(int position,
                      DataValueDescriptor col)

Description copied from interface: Row

Set a DataValueDescriptor in a Row by ordinal position (1-based).

Specified by:

setColumn in interface Row

Parameters:

position - The ordinal position of the column.

getClone

public ExecRow getClone()

Description copied from interface: ExecRow

Clone the Row and its contents.

Specified by:

getClone in interface ExecRow

Returns:

Row A clone of the Row and its contents.

getClone

public ExecRow getClone(FormatableBitSet clonedCols)

Description copied from interface: ExecRow

Clone the Row. The cloned row will contain clones of the specified columns and the same object as the original row for the other columns.

Specified by:

getClone in interface ExecRow

Parameters:

clonedCols - 1-based FormatableBitSet representing the columns to clone.

Returns:

Row A clone of the Row and its contents.

getNewNullRow

public ExecRow getNewNullRow()

Description copied from interface: ExecRow

Get a new row with the same columns type as this one, containing nulls.

Specified by:

getNewNullRow in interface ExecRow

cloneMe

ExecRow cloneMe()

resetRowArray

public void resetRowArray()

Reset all columns in the row array to null values.

Specified by:

resetRowArray in interface ExecRow

cloneColumn

public final DataValueDescriptor cloneColumn(int columnPosition)

Description copied from interface: ExecRow

Get a clone of a DataValueDescriptor from an ExecRow.

Specified by:

cloneColumn in interface ExecRow

Parameters:

columnPosition - (1 based)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getRowArray

public DataValueDescriptor[] getRowArray()

Get the array form of the row that Access expects.

Specified by:

getRowArray in interface ExecRow

See Also:

ExecRow.getRowArray()

getRowArrayClone

public DataValueDescriptor[] getRowArrayClone()

Get a clone of the array form of the row that Access expects.

Specified by:

getRowArrayClone in interface ExecRow

See Also:

ExecRow.getRowArray()

setRowArray

public void setRowArray(DataValueDescriptor[] value)

Set the row array

Specified by:

setRowArray in interface ExecRow

See Also:

ExecRow.setRowArray(org.apache.derby.iapi.types.DataValueDescriptor[])

realloc

protected void realloc(int ncols)