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CustomEditorConfigurer (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.beans.factory.config
Class CustomEditorConfigurer

java.lang.Object
  org.springframework.beans.factory.config.CustomEditorConfigurer

All Implemented Interfaces:

BeanClassLoaderAware, BeanFactoryPostProcessor, Ordered

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public class CustomEditorConfigurer
extends Object
implements BeanFactoryPostProcessor, BeanClassLoaderAware, Ordered

BeanFactoryPostProcessor implementation that allows for convenient registration of custom property editors.

As of Spring 2.0, the recommended usage is to use custom PropertyEditorRegistrar implementations that in turn register any desired editors on a given registry. Each PropertyEditorRegistrar can register any number of custom editors.

 <bean id="customEditorConfigurer" class="org.springframework.beans.factory.config.CustomEditorConfigurer">
   <property name="propertyEditorRegistrars">
     <list>
       <bean class="mypackage.MyCustomDateEditorRegistrar"/>
       <bean class="mypackage.MyObjectEditorRegistrar"/>
     </list>
   </property>
 </bean>

Alternative configuration example with custom editor instances, assuming inner beans for PropertyEditor instances:

 <bean id="customEditorConfigurer" class="org.springframework.beans.factory.config.CustomEditorConfigurer">
   <property name="customEditors">
     <map>
       <entry key="java.util.Date">
         <bean class="mypackage.MyCustomDateEditor"/>
       </entry>
       <entry key="mypackage.MyObject">
         <bean id="myEditor" class="mypackage.MyObjectEditor">
           <property name="myParam"><value>myValue</value></property>
         </bean>
       </entry>
     </map>
   </property>
 </bean>

Also supports "java.lang.String[]"-style array class names and primitive class names (e.g. "boolean"). Delegates to ClassUtils for actual class name resolution.

NOTE: Custom property editors registered with this configurer do not apply to data binding. Custom editors for data binding need to be registered on the DataBinder: Use a common base class or delegate to common PropertyEditorRegistrar implementations to reuse editor registration there.

Since:

27.02.2004

Author:

Juergen Hoeller

See Also:

PropertyEditor, PropertyEditorRegistrar, ConfigurableBeanFactory.addPropertyEditorRegistrar(org.springframework.beans.PropertyEditorRegistrar), ConfigurableBeanFactory.registerCustomEditor(java.lang.Class, java.beans.PropertyEditor), DataBinder.registerCustomEditor(java.lang.Class, java.beans.PropertyEditor), BaseCommandController.setPropertyEditorRegistrars(org.springframework.beans.PropertyEditorRegistrar[]), BaseCommandController.initBinder(javax.servlet.http.HttpServletRequest, org.springframework.web.bind.ServletRequestDataBinder)

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Field Summary

 

Fields inherited from interface org.springframework.core.Ordered
HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

 

Constructor Summary
CustomEditorConfigurer()

 

Method Summary
int	getOrder()           Return the order value of this object, with a higher value meaning greater in terms of sorting.
void	postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory)           Modify the application context's internal bean factory after its standard initialization.
void	setBeanClassLoader(ClassLoader beanClassLoader)           Callback that supplies the bean class loader to a bean instance.
void	setCustomEditors(Map customEditors)           Specify the custom editors to register via a Map, using the class name of the required type as the key and the PropertyEditor instance as the value.
void	setOrder(int order)
void	setPropertyEditorRegistrars(PropertyEditorRegistrar[] propertyEditorRegistrars)           Specify the PropertyEditorRegistrars to apply to beans defined within the current application context.

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

CustomEditorConfigurer

public CustomEditorConfigurer()

Method Detail

setOrder

public void setOrder(int order)

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getOrder

public int getOrder()

Description copied from interface: Ordered

Return the order value of this object, with a higher value meaning greater in terms of sorting.

Normally starting with 0 or 1, with Ordered.LOWEST_PRECEDENCE indicating greatest. Same order values will result in arbitrary positions for the affected objects.

Higher value can be interpreted as lower priority, consequently the first object has highest priority (somewhat analogous to Servlet "load-on-startup" values).

Note that order values below 0 are reserved for framework purposes. Application-specified values should always be 0 or greater, with only framework components (internal or third-party) supposed to use lower values.

Specified by:

getOrder in interface Ordered

Returns:

the order value

See Also:

Ordered.LOWEST_PRECEDENCE

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setPropertyEditorRegistrars

public void setPropertyEditorRegistrars(PropertyEditorRegistrar[] propertyEditorRegistrars)

Specify the PropertyEditorRegistrars to apply to beans defined within the current application context.

This allows for sharing PropertyEditorRegistrars with DataBinders, etc. Furthermore, it avoids the need for synchronization on custom editors: A PropertyEditorRegistrar will always create fresh editor instances for each bean creation attempt.

See Also:

ConfigurableBeanFactory.addPropertyEditorRegistrar(org.springframework.beans.PropertyEditorRegistrar)

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setCustomEditors

public void setCustomEditors(Map customEditors)

Specify the custom editors to register via a Map, using the class name of the required type as the key and the PropertyEditor instance as the value.

Parameters:

customEditors - said Map of editors (can be null)

See Also:

ConfigurableBeanFactory.registerCustomEditor(java.lang.Class, java.beans.PropertyEditor)

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setBeanClassLoader

public void setBeanClassLoader(ClassLoader beanClassLoader)

Description copied from interface: BeanClassLoaderAware

Callback that supplies the bean class loader to a bean instance.

Invoked after the population of normal bean properties but before an initialization callback such as InitializingBean's InitializingBean.afterPropertiesSet() method or a custom init-method.

Specified by:

setBeanClassLoader in interface BeanClassLoaderAware

Parameters:

beanClassLoader - the owning class loader; may be null in which case a default ClassLoader must be used, for example the ClassLoader obtained via ClassUtils.getDefaultClassLoader()

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postProcessBeanFactory

public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory)
                            throws BeansException

Description copied from interface: BeanFactoryPostProcessor

Modify the application context's internal bean factory after its standard initialization. All bean definitions will have been loaded, but no beans will have been instantiated yet. This allows for overriding or adding properties even to eager-initializing beans.

Specified by:

postProcessBeanFactory in interface BeanFactoryPostProcessor

Parameters:

beanFactory - the bean factory used by the application context

Throws:

BeansException - in case of errors

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