com.ibm.as400.util.servlet
Class ListMetaData

java.lang.Object
  |
  +--com.ibm.as400.util.servlet.ListMetaData

All Implemented Interfaces:

RowMetaData, java.io.Serializable

public class ListMetaData

extends java.lang.Object

implements RowMetaData, java.io.Serializable

A ListMetaData object can be used to find out information about the columns of a ListRowData object.

ListMetaData objects generate the following events:

• PropertyChangeEvent
• VetoableChangeEvent

See Also:

Serialized Form

Constructor Summary

ListMetaData()
Constructs a default ListMetaData object.

ListMetaData(int columns)
Constructs a ListMetaData object with the specified number of columns.

Method Summary

void	addPropertyChangeListener(java.beans.PropertyChangeListener listener) Adds a PropertyChangeListener.
void	addVetoableChangeListener(java.beans.VetoableChangeListener listener) Adds the VetoableChangeListener.
int	getColumnCount() Returns the number of columns.
int	getColumnDisplaySize(int columnIndex) Returns the display size in characters of the column specified by columnIndex.
java.lang.String	getColumnLabel(int columnIndex) Returns the label of the column specified by columnIndex.
java.lang.String	getColumnName(int columnIndex) Returns the name of the column specified by columnIndex.
int	getColumnType(int columnIndex) Returns the data type of the column specified by columnIndex.
java.lang.String	getColumnTypeName(int columnIndex) Returns the data type name of the column specified by columnIndex.
int	getPrecision(int columnIndex) Returns the precision of the column specified by columnIndex.
int	getScale(int columnIndex) Returns the scale of the column specified by columnIndex.
boolean	isNumericData(int columnIndex) Indicates if the data type is numeric data.
boolean	isTextData(int columnIndex) Indicates if the data type is text data.
void	removePropertyChangeListener(java.beans.PropertyChangeListener listener) Removes the PropertyChangeListener from the internal list.
void	removeVetoableChangeListener(java.beans.VetoableChangeListener listener) Removes the VetoableChangeListener from the internal list.
void	setColumnDisplaySize(int columnIndex, int displaySize) Sets the specified displaySize for the column specified by columnIndex.
void	setColumnLabel(int columnIndex, java.lang.String label) Sets the specified label for the column specified by columnIndex.
void	setColumnName(int columnIndex, java.lang.String name) Sets the specified name for the column specified by columnIndex.
void	setColumns(int columns) Sets the number of columns.
void	setColumnType(int columnIndex, int type) Sets the specified data type for the column specified by columnIndex.

Methods inherited from class java.lang.Object

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

Constructor Detail

ListMetaData

public ListMetaData()

Constructs a default ListMetaData object.

ListMetaData

public ListMetaData(int columns)

Constructs a ListMetaData object with the specified number of columns.

Parameters:

columns - The number of columns.

Method Detail

addPropertyChangeListener

public void addPropertyChangeListener(java.beans.PropertyChangeListener listener)

Adds a PropertyChangeListener. The specified PropertyChangeListener's propertyChange method is called each time the value of any bound property is changed.

Parameters:

listener - The PropertyChangeListener.

See Also:

removePropertyChangeListener(java.beans.PropertyChangeListener)

addVetoableChangeListener

public void addVetoableChangeListener(java.beans.VetoableChangeListener listener)

Adds the VetoableChangeListener. The specified VetoableChangeListener's vetoableChange method is called each time the value of any constrained property is changed.

Parameters:

listener - The VetoableChangeListener.

See Also:

removeVetoableChangeListener(java.beans.VetoableChangeListener)

getColumnCount

public int getColumnCount()

Returns the number of columns.

Specified by:

getColumnCount in interface RowMetaData

Returns:

The column count.

getColumnDisplaySize

public int getColumnDisplaySize(int columnIndex)

Returns the display size in characters of the column specified by columnIndex.

Specified by:

getColumnDisplaySize in interface RowMetaData

Parameters:

columnIndex - The column index (0-based).

Returns:

The column display size in characters.

getColumnLabel

public java.lang.String getColumnLabel(int columnIndex)

Returns the label of the column specified by columnIndex.

Specified by:

getColumnLabel in interface RowMetaData

Parameters:

columnIndex - The column index (0-based).

Returns:

The column label.

getColumnName

public java.lang.String getColumnName(int columnIndex)

Returns the name of the column specified by columnIndex.

Specified by:

getColumnName in interface RowMetaData

Parameters:

columnIndex - The column index (0-based).

Returns:

The column name.

getColumnType

public int getColumnType(int columnIndex)

Returns the data type of the column specified by columnIndex.

Specified by:

getColumnType in interface RowMetaData

Parameters:

columnIndex - The column index (0-based).

Returns:

The column RowMetaDataType.

See Also:

RowMetaDataType

getColumnTypeName

public java.lang.String getColumnTypeName(int columnIndex)

Returns the data type name of the column specified by columnIndex.

Specified by:

getColumnTypeName in interface RowMetaData

Parameters:

columnIndex - The column index (0-based).

Returns:

The column data type name.

getPrecision

public int getPrecision(int columnIndex)

Returns the precision of the column specified by columnIndex. This value is not used. It will always return zero.

Specified by:

getPrecision in interface RowMetaData

Parameters:

columnIndex - The column index (0-based).

Returns:

The column precision (number of decimal digits).

getScale

public int getScale(int columnIndex)

Returns the scale of the column specified by columnIndex. This value is not used. It will always return zero.

Specified by:

getScale in interface RowMetaData

Parameters:

columnIndex - The column index (0-based).

Returns:

The column scale (number of digits to the right of the decimal point).

isNumericData

public boolean isNumericData(int columnIndex)

Indicates if the data type is numeric data.

Specified by:

isNumericData in interface RowMetaData

Parameters:

columnIndex - The column index (0-based).

Returns:

true if numeric data; false otherwise.

isTextData

public boolean isTextData(int columnIndex)

Indicates if the data type is text data.

Specified by:

isTextData in interface RowMetaData

Parameters:

columnIndex - The column index (0-based).

Returns:

true if text data; false otherwise.

removePropertyChangeListener

public void removePropertyChangeListener(java.beans.PropertyChangeListener listener)

Removes the PropertyChangeListener from the internal list. If the PropertyChangeListener is not on the list, nothing is done.

Parameters:

listener - The PropertyChangeListener.

See Also:

addPropertyChangeListener(java.beans.PropertyChangeListener)

removeVetoableChangeListener

public void removeVetoableChangeListener(java.beans.VetoableChangeListener listener)

Removes the VetoableChangeListener from the internal list. If the VetoableChangeListener is not on the list, nothing is done.

Parameters:

listener - The VetoableChangeListener.

See Also:

addVetoableChangeListener(java.beans.VetoableChangeListener)

setColumnDisplaySize

public void setColumnDisplaySize(int columnIndex,
                                 int displaySize)

Sets the specified displaySize for the column specified by columnIndex.

Parameters:

columnIndex - The column index (0-based).

displaySize - The column display size in characters.

setColumnLabel

public void setColumnLabel(int columnIndex,
                           java.lang.String label)

Sets the specified label for the column specified by columnIndex.

Specified by:

setColumnLabel in interface RowMetaData

Parameters:

columnIndex - The column index (0-based).

label - The column label.

setColumnName

public void setColumnName(int columnIndex,
                          java.lang.String name)

Sets the specified name for the column specified by columnIndex.

Parameters:

columnIndex - The column index (0-based).

name - The column name.

setColumns

public void setColumns(int columns)
                throws java.beans.PropertyVetoException

Sets the number of columns. Any previous column information is cleared.

Parameters:

columns - The number of columns.

Throws:

java.beans.PropertyVetoException - If a change is vetoed.

setColumnType

public void setColumnType(int columnIndex,
                          int type)

Sets the specified data type for the column specified by columnIndex.

Parameters:

columnIndex - The column index (0-based).

type - The RowMetaDataType type.

See Also:

RowMetaDataType