org.apache.commons.beanutils

Class BasicDynaBean

java.lang.Object

org.apache.commons.beanutils.BasicDynaBean

All Implemented Interfaces:

Serializable, DynaBean

public class BasicDynaBean
extends 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:

$Id$

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected DynaClass	dynaClass The DynaClass "base class" that this DynaBean is associated with.
protected HashMap<String,Object>	values The set of property values for this DynaBean, keyed by property name.

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
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.
protected DynaProperty	getDynaProperty(String name) Return the property descriptor for the specified property name.
Map<String,Object>	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, 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.

Methods inherited from class java.lang.Object

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

Field Detail

dynaClass

protected DynaClass dynaClass

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

values

protected HashMap<String,Object> values

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

Constructor Detail

BasicDynaBean

public BasicDynaBean(DynaClass dynaClass)

Construct a new DynaBean associated with the specified DynaClass instance.

Parameters:

dynaClass - The DynaClass we are associated with

Method Detail

getMap

public Map<String,Object> 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

Since:

1.8.0

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

Throws:

IllegalArgumentException - if there is no property of the specified name

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

Throws:

IllegalArgumentException - if there is no property of the specified name

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

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

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

Throws:

IllegalArgumentException - if there is no property of the specified name

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

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

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

Throws:

IllegalArgumentException - if there is no property of the specified name

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

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

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

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

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

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

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

Throws:

IllegalArgumentException - if this is not a valid property name for our DynaClass

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