org.apache.commons.beanutils

Class BasicDynaBean

Implemented Interfaces:
DynaBean, Serializable

public class BasicDynaBean
extends java.lang.Object
implements DynaBean, Serializable

Minimal implementation of the DynaBean interface. Can be used as a convenience base class for more sophisticated implementations.

IMPLEMENTATION NOTE - Instances of this class that are accessed from multiple threads simultaneously need to be synchronized.

IMPLEMENTATION NOTE - Instances of this class can be successfully serialized and deserialized ONLY if all property values are Serializable.

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

Field Summary

protected DynaClass
dynaClass
The DynaClass "base class" that this DynaBean is associated with.
private Map
mapDecorator
Map decorator for this DynaBean
protected HashMap
values
The set of property values for this DynaBean, keyed by property name.

Constructor Summary

BasicDynaBean(DynaClass dynaClass)
Construct a new DynaBean associated with the specified DynaClass instance.

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, String key)
Return the value of a mapped property with the specified name, or null if there is no value for the specified key.
Object
get(String name, int index)
Return the value of an indexed property with the specified name.
DynaClass
getDynaClass()
Return the DynaClass instance that describes the set of properties available for this DynaBean.
protected DynaProperty
getDynaProperty(String name)
Return the property descriptor for the specified property name.
Map
getMap()
Return a Map representation of this DynaBean.
protected boolean
isAssignable(Class dest, Class source)
Is an object of the source class assignable to the destination class?
void
remove(String name, String key)
Remove any existing value for the specified key on the specified mapped property.
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.
void
set(String name, int index, Object value)
Set the value of an indexed property with the specified name.

Field Details

dynaClass

protected DynaClass dynaClass
The DynaClass "base class" that this DynaBean is associated with.

mapDecorator

private Map mapDecorator
Map decorator for this DynaBean

values

protected HashMap values
The set of property values for this DynaBean, keyed by property name.

Constructor Details

BasicDynaBean

public BasicDynaBean(DynaClass dynaClass)
Construct a new DynaBean associated with the specified DynaClass instance.
Parameters:
dynaClass - The DynaClass we are associated with

Method Details

contains

public boolean contains(String name,
                        String key)
Does the specified mapped property contain a value for the specified key value?
Specified by:
contains in interface DynaBean
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

get

public Object get(String name)
Return the value of a simple property with the specified name.
Specified by:
get in interface DynaBean
Parameters:
name - Name of the property whose value is to be retrieved
Returns:
The property's value

get

public 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.
Specified by:
get in interface DynaBean
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

get

public Object get(String name,
                  int index)
Return the value of an indexed property with the specified name.
Specified by:
get in interface DynaBean
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

getDynaClass

public DynaClass getDynaClass()
Return the DynaClass instance that describes the set of properties available for this DynaBean.
Specified by:
getDynaClass in interface DynaBean
Returns:
The associated DynaClass

getDynaProperty

protected DynaProperty getDynaProperty(String name)
Return the property descriptor for the specified property name.
Parameters:
name - Name of the property for which to retrieve the descriptor
Returns:
The property descriptor

getMap

public Map getMap()
Return a Map representation of this DynaBean. This, for example, could be used in JSTL in the following way to access a DynaBean's fooProperty:
  • ${myDynaBean.map.fooProperty}
Returns:
a Map representation of this DynaBean

isAssignable

protected boolean isAssignable(Class dest,
                               Class source)
Is an object of the source class assignable to the destination class?
Parameters:
dest - Destination class
source - Source class
Returns:
true if the source class is assignable to the destination class, otherwise false

remove

public void remove(String name,
                   String key)
Remove any existing value for the specified key on the specified mapped property.
Specified by:
remove in interface DynaBean
Parameters:
name - Name of the property for which a value is to be removed
key - Key of the value to be removed

set

public void set(String name,
                Object value)
Set the value of a simple property with the specified name.
Specified by:
set in interface DynaBean
Parameters:
name - Name of the property whose value is to be set
value - Value to which this property is to be set

set

public void set(String name,
                String key,
                Object value)
Set the value of a mapped property with the specified name.
Specified by:
set in interface DynaBean
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

set

public void set(String name,
                int index,
                Object value)
Set the value of an indexed property with the specified name.
Specified by:
set in interface DynaBean
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

Copyright (c) 2001-2007 - Apache Software Foundation