org.springframework.web.jsf.el

Class WebApplicationContextFacesELResolver

java.lang.Object

javax.el.ELResolver

org.springframework.web.jsf.el.WebApplicationContextFacesELResolver

public class WebApplicationContextFacesELResolver
extends ELResolver

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

In contrast to SpringBeanFacesELResolver, 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:

2.5

Author:

Juergen Hoeller

See Also:

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

Field Summary

Fields

Modifier and Type	Field and Description
protected Log	logger Logger available to subclasses
static java.lang.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

Constructors

Constructor and Description
WebApplicationContextFacesELResolver()

Method Summary

Modifier and Type	Method and Description
java.lang.Class<?>	getCommonPropertyType(ELContext elContext, java.lang.Object base)
java.util.Iterator<java.beans.FeatureDescriptor>	getFeatureDescriptors(ELContext elContext, java.lang.Object base)
java.lang.Class<?>	getType(ELContext elContext, java.lang.Object base, java.lang.Object property)
java.lang.Object	getValue(ELContext elContext, java.lang.Object base, java.lang.Object property)
protected WebApplicationContext	getWebApplicationContext(ELContext elContext) Retrieve the WebApplicationContext reference to expose.
boolean	isReadOnly(ELContext elContext, java.lang.Object base, java.lang.Object property)
void	setValue(ELContext elContext, java.lang.Object base, java.lang.Object property, java.lang.Object value)

Methods inherited from class javax.el.ELResolver

convertToType, invoke

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 java.lang.String WEB_APPLICATION_CONTEXT_VARIABLE_NAME

Name of the exposed WebApplicationContext variable: "webApplicationContext".

See Also:

Constant Field Values

logger

protected final Log logger

Logger available to subclasses

Constructor Detail

WebApplicationContextFacesELResolver

public WebApplicationContextFacesELResolver()

Method Detail

getValue

@Nullable
public java.lang.Object getValue(ELContext elContext,
                                           @Nullable
                                           java.lang.Object base,
                                           java.lang.Object property)
                                    throws ELException

Specified by:

getValue in class ELResolver

Throws:

ELException

getType

@Nullable
public java.lang.Class<?> getType(ELContext elContext,
                                            @Nullable
                                            java.lang.Object base,
                                            java.lang.Object property)
                                     throws ELException

Specified by:

getType in class ELResolver

Throws:

ELException

setValue

public void setValue(ELContext elContext,
                     java.lang.Object base,
                     java.lang.Object property,
                     java.lang.Object value)
              throws ELException

Specified by:

setValue in class ELResolver

Throws:

ELException

isReadOnly

public boolean isReadOnly(ELContext elContext,
                          java.lang.Object base,
                          java.lang.Object property)
                   throws ELException

Specified by:

isReadOnly in class ELResolver

Throws:

ELException

getFeatureDescriptors

@Nullable
public java.util.Iterator<java.beans.FeatureDescriptor> getFeatureDescriptors(ELContext elContext,
                                                                                        java.lang.Object base)

Specified by:

getFeatureDescriptors in class ELResolver

getCommonPropertyType

public java.lang.Class<?> getCommonPropertyType(ELContext elContext,
                                                java.lang.Object base)

Specified by:

getCommonPropertyType in class ELResolver

getWebApplicationContext

@Nullable
protected WebApplicationContext getWebApplicationContext(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)