org.springframework.faces.webflow

Class SpringBeanWebFlowVariableResolver

java.lang.Object

javax.faces.el.VariableResolver

org.springframework.faces.webflow.SpringBeanWebFlowVariableResolver

public class SpringBeanWebFlowVariableResolver
extends javax.faces.el.VariableResolver

JSF 1.1 VariableResolver that delegates to the flow's local Spring bean factory (for resolving Spring beans) and then to the original resolver of the underlying JSF implementation (for resolving managed-bean objects as defined in faces-config.xml as well as well-known implicit EL attributes).

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

 <application>
   ...
   <variable-resolver>org.springframework.faces.webflow.SpringBeanWebFlowVariableResolver</variable-resolver>
 </application>

All your JSF expressions can then implicitly refer to the names of Spring-managed service layer beans, for example in property values of JSF-managed beans:

 <managed-bean>
   <managed-bean-name>myJsfManagedBean</managed-bean-name>
   <managed-bean-class>example.MyJsfManagedBean</managed-bean-class>
   <managed-bean-scope>session</managed-bean-scope>
   <managed-property>
     <property-name>mySpringManagedBusinessObject</property-name>
     <value>#{mySpringManagedBusinessObject}</value>
   </managed-property>
 </managed-bean>

with "mySpringManagedBusinessObject" defined as Spring bean in applicationContext.xml:

 <bean id="mySpringManagedBusinessObject" class="example.MySpringManagedBusinessObject">
   ...
 </bean>

Author:

Jeremy Grelle

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.commons.logging.Log	logger Logger available to subclasses
protected javax.faces.el.VariableResolver	originalVariableResolver

Constructor Summary

Constructors

Constructor and Description
SpringBeanWebFlowVariableResolver(javax.faces.el.VariableResolver originalVariableResolver)

Method Summary

Methods

Modifier and Type	Method and Description
protected org.springframework.beans.factory.BeanFactory	getBeanFactory(javax.faces.context.FacesContext facesContext)
protected javax.faces.el.VariableResolver	getOriginalVariableResolver() Return the original JSF VariableResolver that this resolver delegates to.
protected java.lang.Object	resolveOriginal(javax.faces.context.FacesContext facesContext, java.lang.String name) Resolve the attribute via the original JSF VariableResolver.
protected java.lang.Object	resolveSpringBean(javax.faces.context.FacesContext facesContext, java.lang.String name) Resolve the attribute as a Spring bean in the ApplicationContext.
java.lang.Object	resolveVariable(javax.faces.context.FacesContext facesContext, java.lang.String name) Try to resolve the variable as Spring bean in the flow local bean factory.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final org.apache.commons.logging.Log logger

Logger available to subclasses

originalVariableResolver

protected final javax.faces.el.VariableResolver originalVariableResolver

Constructor Detail

SpringBeanWebFlowVariableResolver

public SpringBeanWebFlowVariableResolver(javax.faces.el.VariableResolver originalVariableResolver)

Method Detail

getOriginalVariableResolver

protected final javax.faces.el.VariableResolver getOriginalVariableResolver()

Return the original JSF VariableResolver that this resolver delegates to. Used to resolve standard JSF-managed beans.

resolveVariable

public java.lang.Object resolveVariable(javax.faces.context.FacesContext facesContext,
                               java.lang.String name)
                                 throws javax.faces.el.EvaluationException

Try to resolve the variable as Spring bean in the flow local bean factory. Then delegate to the original VariableResolver.

Specified by:

resolveVariable in class javax.faces.el.VariableResolver

Throws:

javax.faces.el.EvaluationException

resolveOriginal

protected java.lang.Object resolveOriginal(javax.faces.context.FacesContext facesContext,
                               java.lang.String name)

Resolve the attribute via the original JSF VariableResolver.

resolveSpringBean

protected java.lang.Object resolveSpringBean(javax.faces.context.FacesContext facesContext,
                                 java.lang.String name)

Resolve the attribute as a Spring bean in the ApplicationContext.

getBeanFactory

protected org.springframework.beans.factory.BeanFactory getBeanFactory(javax.faces.context.FacesContext facesContext)