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

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org.springframework.web.jsf.el
Class WebApplicationContextFacesELResolver

java.lang.Object
  javax.el.ELResolver
      org.springframework.web.jsf.el.WebApplicationContextFacesELResolver

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public class WebApplicationContextFacesELResolver
extends javax.el.ELResolver

Special JSF 1.2 ELResolver that exposes the Spring WebApplicationContext instance under a variable named "webApplicationContext".

In contrast to DelegatingFacesELResolver, this ELResolver variant does not resolve JSF variable names as Spring bean names. It rather exposes Spring's root WebApplicationContext itself under a special name, and is able to resolve "webApplicationContext.mySpringManagedBusinessObject" dereferences to Spring-defined beans in that application context.

Configure this resolver in your faces-config.xml file as follows:

 <application>
   ...
   <el-resolver>org.springframework.web.jsf.el.WebApplicationContextFacesELResolver</el-resolver>
 </application>

Since:

2.1

Author:

Juergen Hoeller

See Also:

DelegatingFacesELResolver, FacesContextUtils.getWebApplicationContext(javax.faces.context.FacesContext)

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Field Summary
protected  Log	logger           Logger available to subclasses
static String	WEB_APPLICATION_CONTEXT_VARIABLE_NAME           Name of the exposed WebApplicationContext variable: "webApplicationContext".

 

Fields inherited from class javax.el.ELResolver
RESOLVABLE_AT_DESIGN_TIME, TYPE

 

Constructor Summary
WebApplicationContextFacesELResolver()

 

Method Summary
Class<?>	getCommonPropertyType(javax.el.ELContext elContext, Object base)
Iterator<FeatureDescriptor>	getFeatureDescriptors(javax.el.ELContext elContext, Object base)
Class<?>	getType(javax.el.ELContext elContext, Object base, Object property)
Object	getValue(javax.el.ELContext elContext, Object base, Object property)
protected  WebApplicationContext	getWebApplicationContext(javax.el.ELContext elContext)           Retrieve the WebApplicationContext reference to expose.
boolean	isReadOnly(javax.el.ELContext elContext, Object base, Object property)
void	setValue(javax.el.ELContext elContext, Object base, Object property, Object value)

 

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

 

Field Detail

WEB_APPLICATION_CONTEXT_VARIABLE_NAME

public static final String WEB_APPLICATION_CONTEXT_VARIABLE_NAME

Name of the exposed WebApplicationContext variable: "webApplicationContext".

See Also:

Constant Field Values

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logger

protected final Log logger

Logger available to subclasses

Constructor Detail

WebApplicationContextFacesELResolver

public WebApplicationContextFacesELResolver()

Method Detail

getValue

public Object getValue(javax.el.ELContext elContext,
                       Object base,
                       Object property)
                throws javax.el.ELException

Specified by:

getValue in class javax.el.ELResolver

Throws:

javax.el.ELException

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getType

public Class<?> getType(javax.el.ELContext elContext,
                        Object base,
                        Object property)
                 throws javax.el.ELException

Specified by:

getType in class javax.el.ELResolver

Throws:

javax.el.ELException

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setValue

public void setValue(javax.el.ELContext elContext,
                     Object base,
                     Object property,
                     Object value)
              throws javax.el.ELException

Specified by:

setValue in class javax.el.ELResolver

Throws:

javax.el.ELException

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isReadOnly

public boolean isReadOnly(javax.el.ELContext elContext,
                          Object base,
                          Object property)
                   throws javax.el.ELException

Specified by:

isReadOnly in class javax.el.ELResolver

Throws:

javax.el.ELException

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getFeatureDescriptors

public Iterator<FeatureDescriptor> getFeatureDescriptors(javax.el.ELContext elContext,
                                                         Object base)

Specified by:

getFeatureDescriptors in class javax.el.ELResolver

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getCommonPropertyType

public Class<?> getCommonPropertyType(javax.el.ELContext elContext,
                                      Object base)

Specified by:

getCommonPropertyType in class javax.el.ELResolver

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getWebApplicationContext

protected WebApplicationContext getWebApplicationContext(javax.el.ELContext elContext)

Retrieve the WebApplicationContext reference to expose.

The default implementation delegates to FacesContextUtils, returning null if no WebApplicationContext found.

Parameters:

elContext - the current JSF ELContext

Returns:

the Spring web application context

See Also:

FacesContextUtils.getWebApplicationContext(javax.faces.context.FacesContext)

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