org.apache.commons.beanutils
Interface DynaBean

All Known Implementing Classes:

BasicDynaBean, ConvertingWrapDynaBean, LazyDynaBean, LazyDynaMap, ResultSetIterator, WrapDynaBean

public interface DynaBean

A DynaBean is a Java object that supports properties whose names and data types, as well as values, may be dynamically modified. To the maximum degree feasible, other components of the BeanUtils package will recognize such beans and treat them as standard JavaBeans for the purpose of retrieving and setting property values.

Version:

$Revision: 555824 $ $Date: 2007-07-13 01:27:15 +0100 (Fri, 13 Jul 2007) $

Author:

Craig McClanahan, Paulo Gaspar

Method Summary

boolean	contains(String name, String key) Does the specified mapped property contain a value for the specified key value?
Object	get(String name) Return the value of a simple property with the specified name.
Object	get(String name, int index) Return the value of an indexed property with the specified name.
Object	get(String name, String key) Return the value of a mapped property with the specified name, or null if there is no value for the specified key.
DynaClass	getDynaClass() Return the DynaClass instance that describes the set of properties available for this DynaBean.
void	remove(String name, String key) Remove any existing value for the specified key on the specified mapped property.
void	set(String name, int index, Object value) Set the value of an indexed property with the specified name.
void	set(String name, Object value) Set the value of a simple property with the specified name.
void	set(String name, String key, Object value) Set the value of a mapped property with the specified name.

Method Detail

contains

boolean contains(String name,
                 String key)

Does the specified mapped property contain a value for the specified key value?

Parameters:

name - Name of the property to check

key - Name of the key to check

Returns:

true if the mapped property contains a value for the specified key, otherwise false

Throws:

IllegalArgumentException - if there is no property of the specified name

get

Object get(String name)

Return the value of a simple property with the specified name.

Parameters:

name - Name of the property whose value is to be retrieved

Returns:

The property's value

Throws:

IllegalArgumentException - if there is no property of the specified name

get

Object get(String name,
           int index)

Return the value of an indexed property with the specified name.

Parameters:

name - Name of the property whose value is to be retrieved

index - Index of the value to be retrieved

Returns:

The indexed property's value

Throws:

IllegalArgumentException - if there is no property of the specified name

IllegalArgumentException - if the specified property exists, but is not indexed

IndexOutOfBoundsException - if the specified index is outside the range of the underlying property

NullPointerException - if no array or List has been initialized for this property

get

Object get(String name,
           String key)

Return the value of a mapped property with the specified name, or null if there is no value for the specified key.

Parameters:

name - Name of the property whose value is to be retrieved

key - Key of the value to be retrieved

Returns:

The mapped property's value

Throws:

IllegalArgumentException - if there is no property of the specified name

IllegalArgumentException - if the specified property exists, but is not mapped

getDynaClass

DynaClass getDynaClass()

Return the DynaClass instance that describes the set of properties available for this DynaBean.

Returns:

The associated DynaClass

remove

void remove(String name,
            String key)

Remove any existing value for the specified key on the specified mapped property.

Parameters:

name - Name of the property for which a value is to be removed

key - Key of the value to be removed

Throws:

IllegalArgumentException - if there is no property of the specified name

set

void set(String name,
         Object value)

Set the value of a simple property with the specified name.

Parameters:

name - Name of the property whose value is to be set

value - Value to which this property is to be set

Throws:

ConversionException - if the specified value cannot be converted to the type required for this property

IllegalArgumentException - if there is no property of the specified name

NullPointerException - if an attempt is made to set a primitive property to null

set

void set(String name,
         int index,
         Object value)

Set the value of an indexed property with the specified name.

Parameters:

name - Name of the property whose value is to be set

index - Index of the property to be set

value - Value to which this property is to be set

Throws:

ConversionException - if the specified value cannot be converted to the type required for this property

IllegalArgumentException - if there is no property of the specified name

IllegalArgumentException - if the specified property exists, but is not indexed

IndexOutOfBoundsException - if the specified index is outside the range of the underlying property

set

void set(String name,
         String key,
         Object value)

Set the value of a mapped property with the specified name.

Parameters:

name - Name of the property whose value is to be set

key - Key of the property to be set

value - Value to which this property is to be set

Throws:

ConversionException - if the specified value cannot be converted to the type required for this property

IllegalArgumentException - if there is no property of the specified name

IllegalArgumentException - if the specified property exists, but is not mapped