javax.rad.model.datatype
Class DataType

java.lang.Object
  javax.rad.model.datatype.DataType

All Implemented Interfaces:

Serializable, Cloneable, IDataType

Direct Known Subclasses:

BigDecimalDataType, BinaryDataType, BooleanDataType, ObjectDataType, StringDataType, TimestampDataType

public abstract class DataType
extends Object
implements IDataType, Serializable

A DataType is the abstract base class of all ColumnDefinition data types. They store type specific informations like size, precision, ...
It can also used to convert between a standard Java data type and a memory optimized storage Object.

On the other hand, it stores the ICellRenderer and ICellEditor. That is because in most cases the GUI control (drawing and editing) depends on the data type.

See Also:

Serialized Form

Constructor Summary

DataType()

Method Summary

IDataType	clone() Clone an IDataType.
int	compareTo(Object pObject1, Object pObject2) Compares IDataType objects in the rules of the Comparable interface.
ICellEditor	getCellEditor() Returns the CellEditor for this IDataType.
ICellRenderer	getCellRenderer() Returns the CellRenderer for this IDataType.
int	getSize() Returns the size of the DataType.
int	hashCode(Object pObject) Returns the hash code of the given object or null if the object is null.
Object	prepareValue(Object pObject) Prepares the given value.
void	setCellEditor(ICellEditor pCellEditor) Sets the CellEditor for this IDataType.
void	setCellRenderer(ICellRenderer pCellRenderer) Sets the CellRenderer for this IDataType.
void	setSize(int pSize) Sets the size of the DataType.

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.rad.model.datatype.IDataType

convertAndCheckToTypeClass, convertToString, convertToTypeClass, getTypeClass, getTypeIdentifier

Constructor Detail

DataType

public DataType()

Method Detail

compareTo

public int compareTo(Object pObject1,
                     Object pObject2)

Compares IDataType objects in the rules of the Comparable interface. Implementations need to take care about to null objects are equal.

Specified by:

compareTo in interface IDataType

Parameters:

pObject1 - a getTypeClass() object of one IDataType

pObject2 - a getTypeClass() object of one IDataType

Returns:

-1 if pObject1 is smaller, 0 if equal and +1 if it is greater then pObject2

hashCode

public int hashCode(Object pObject)

Returns the hash code of the given object or null if the object is null.

Specified by:

hashCode in interface IDataType

Parameters:

pObject - a getTypeClass() object of one IDataType

Returns:

the hash code of the given object or null if the object is null.

clone

public IDataType clone()

Clone an IDataType.

Specified by:

clone in interface IDataType

Overrides:

clone in class Object

Returns:

a clone of this IDataType

See Also:

Object.clone()

prepareValue

public Object prepareValue(Object pObject)
                    throws ModelException

Prepares the given value.

This is used for preparing values for client-side usage and occurs before the client side receives the value for the first time.

If there is nothing to be done, the same object as passed in needs to be returned.

Specified by:

prepareValue in interface IDataType

Parameters:

pObject - the object to prepare.

Returns:

the prepared object. If there is nothing to do, the same object.

Throws:

ModelException - if the preparation failed.

setCellEditor

public void setCellEditor(ICellEditor pCellEditor)

Sets the CellEditor for this IDataType.

Specified by:

setCellEditor in interface IDataType

Parameters:

pCellEditor - the new ICellEditor

getCellEditor

public ICellEditor getCellEditor()

Returns the CellEditor for this IDataType.

Specified by:

getCellEditor in interface IDataType

Returns:

the CellEditor for this IDataType.

setCellRenderer

public void setCellRenderer(ICellRenderer pCellRenderer)

Sets the CellRenderer for this IDataType.

Specified by:

setCellRenderer in interface IDataType

Parameters:

pCellRenderer - the new ICellRenderer

getCellRenderer

public ICellRenderer getCellRenderer()

Returns the CellRenderer for this IDataType.

Specified by:

getCellRenderer in interface IDataType

Returns:

the CellRenderer for this IDataType.

getSize

public int getSize()

Returns the size of the DataType.

Returns:

the size of the DataType.

setSize

public void setSize(int pSize)

Sets the size of the DataType.

Parameters:

pSize - the size of the DataType.