org.apache.commons.beanutils

Class MappedPropertyDescriptor

public class MappedPropertyDescriptor extends PropertyDescriptor

A MappedPropertyDescriptor describes one mapped property. Mapped properties are multivalued properties like indexed properties but that are accessed with a String key instead of an index. Such property values are typically stored in a Map collection. For this class to work properly, a mapped value must have getter and setter methods of the form

getProperty(String key) and

setProperty(String key, Object value),

where Property must be replaced by the name of the property.

Version: $Revision: 806915 $ $Date: 2009-08-23 01:50:23 +0100 (Sun, 23 Aug 2009) $

Author: Rey Francois Gregor Rayman

See Also: java.beans.PropertyDescriptor

Constructor Summary
MappedPropertyDescriptor(String propertyName, Class beanClass)
Constructs a MappedPropertyDescriptor for a property that follows the standard Java convention by having getFoo and setFoo accessor methods, with the addition of a String parameter (the key).
MappedPropertyDescriptor(String propertyName, Class beanClass, String mappedGetterName, String mappedSetterName)
This constructor takes the name of a mapped property, and method names for reading and writing the property.
MappedPropertyDescriptor(String propertyName, Method mappedGetter, Method mappedSetter)
This constructor takes the name of a mapped property, and Method objects for reading and writing the property.
Method Summary
ClassgetMappedPropertyType()
Gets the Class object for the property values.
MethodgetMappedReadMethod()
Gets the method that should be used to read one of the property value.
MethodgetMappedWriteMethod()
Gets the method that should be used to write one of the property value.
voidsetMappedReadMethod(Method mappedGetter)
Sets the method that should be used to read one of the property value.
voidsetMappedWriteMethod(Method mappedSetter)
Sets the method that should be used to write the property value.

Constructor Detail

MappedPropertyDescriptor

public MappedPropertyDescriptor(String propertyName, Class beanClass)
Constructs a MappedPropertyDescriptor for a property that follows the standard Java convention by having getFoo and setFoo accessor methods, with the addition of a String parameter (the key). Thus if the argument name is "fred", it will assume that the writer method is "setFred" and the reader method is "getFred". Note that the property name should start with a lower case character, which will be capitalized in the method names.

Parameters: propertyName The programmatic name of the property. beanClass The Class object for the target bean. For example sun.beans.OurButton.class.

Throws: IntrospectionException if an exception occurs during introspection.

MappedPropertyDescriptor

public MappedPropertyDescriptor(String propertyName, Class beanClass, String mappedGetterName, String mappedSetterName)
This constructor takes the name of a mapped property, and method names for reading and writing the property.

Parameters: propertyName The programmatic name of the property. beanClass The Class object for the target bean. For example sun.beans.OurButton.class. mappedGetterName The name of the method used for reading one of the property values. May be null if the property is write-only. mappedSetterName The name of the method used for writing one of the property values. May be null if the property is read-only.

Throws: IntrospectionException if an exception occurs during introspection.

MappedPropertyDescriptor

public MappedPropertyDescriptor(String propertyName, Method mappedGetter, Method mappedSetter)
This constructor takes the name of a mapped property, and Method objects for reading and writing the property.

Parameters: propertyName The programmatic name of the property. mappedGetter The method used for reading one of the property values. May be be null if the property is write-only. mappedSetter The method used for writing one the property values. May be null if the property is read-only.

Throws: IntrospectionException if an exception occurs during introspection.

Method Detail

getMappedPropertyType

public Class getMappedPropertyType()
Gets the Class object for the property values.

Returns: The Java type info for the property values. Note that the "Class" object may describe a built-in Java type such as "int". The result may be "null" if this is a mapped property that does not support non-keyed access.

This is the type that will be returned by the mappedReadMethod.

getMappedReadMethod

public Method getMappedReadMethod()
Gets the method that should be used to read one of the property value.

Returns: The method that should be used to read the property value. May return null if the property can't be read.

getMappedWriteMethod

public Method getMappedWriteMethod()
Gets the method that should be used to write one of the property value.

Returns: The method that should be used to write one of the property value. May return null if the property can't be written.

setMappedReadMethod

public void setMappedReadMethod(Method mappedGetter)
Sets the method that should be used to read one of the property value.

Parameters: mappedGetter The mapped getter method.

Throws: IntrospectionException If an error occurs finding the mapped property

setMappedWriteMethod

public void setMappedWriteMethod(Method mappedSetter)
Sets the method that should be used to write the property value.

Parameters: mappedSetter The mapped setter method.

Throws: IntrospectionException If an error occurs finding the mapped property

Copyright © 2000-2010 Apache Software Foundation. All Rights Reserved.