Examples of javax.faces.el.VariableResolver.resolveVariable()

javax.faces.el.VariableResolver.resolveVariable()

Resolve the specified variable name, and return the corresponding object, if any; otherwise, return null.
@param context {@link FacesContext} against which to resolvethis variable name @param name Name of the variable to be resolved @throws EvaluationException if an exception is thrown while resolvingthe variable name (the thrown exception must be included as the cause property of this exception) @throws NullPointerException if contextor name is null

  }


  public static Object resolveVariable(FacesContext context, String variable) {
    Application application = context.getApplication();
    VariableResolver variableResolver = application.getVariableResolver();
    return variableResolver.resolveVariable(context, variable);
  }


  /**
   * Clears the value of the variable.
   * Useful for cleaning up e.g. a session or application variable

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        // application
        getFacesContext().getExternalContext().getApplicationMap().put(
            "TestBean",
            testBean);
        result = variableResolver.resolveVariable(getFacesContext(),
                                                  "TestBean");
        assertTrue(result == testBean);
        getFacesContext().getExternalContext().getApplicationMap().remove(
            "TestBean");
        // session

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        getFacesContext().getExternalContext().getApplicationMap().remove(
            "TestBean");
        // session
        getFacesContext().getExternalContext().getSessionMap().put("TestBean",
                                                                   testBean);
        result = variableResolver.resolveVariable(getFacesContext(),
                                                  "TestBean");
        assertTrue(result == testBean);
        getFacesContext().getExternalContext().getSessionMap().remove(
            "TestBean");

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        // session
        getFacesContext().getExternalContext().getRequestMap().put("TestBean",
                                                                   testBean);


        result = variableResolver.resolveVariable(getFacesContext(),
                                                  "TestBean");
        assertTrue(result == testBean);
        getFacesContext().getExternalContext().getRequestMap().remove(
            "TestBean");

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        //
        // test scope maps
        //


        // ApplicationMap
        assertTrue(variableResolver.resolveVariable(getFacesContext(),
                                                    "applicationScope") ==
                   getFacesContext().getExternalContext().getApplicationMap());


        // SessionMap
        assertTrue(variableResolver.resolveVariable(getFacesContext(),

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        assertTrue(variableResolver.resolveVariable(getFacesContext(),
                                                    "applicationScope") ==
                   getFacesContext().getExternalContext().getApplicationMap());


        // SessionMap
        assertTrue(variableResolver.resolveVariable(getFacesContext(),
                                                    "sessionScope") ==
                   getFacesContext().getExternalContext().getSessionMap());


        // RequestMap
        assertTrue(variableResolver.resolveVariable(getFacesContext(),

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        assertTrue(variableResolver.resolveVariable(getFacesContext(),
                                                    "sessionScope") ==
                   getFacesContext().getExternalContext().getSessionMap());


        // RequestMap
        assertTrue(variableResolver.resolveVariable(getFacesContext(),
                                                    "requestScope") ==
                   getFacesContext().getExternalContext().getRequestMap());


        //
        // test request objects

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        //
        // test request objects
        //


        // cookie
        assertTrue(variableResolver.resolveVariable(getFacesContext(),
                                                    "cookie") ==
                   getFacesContext().getExternalContext().getRequestCookieMap());


        // header
        assertTrue(variableResolver.resolveVariable(getFacesContext(),

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        assertTrue(variableResolver.resolveVariable(getFacesContext(),
                                                    "cookie") ==
                   getFacesContext().getExternalContext().getRequestCookieMap());


        // header
        assertTrue(variableResolver.resolveVariable(getFacesContext(),
                                                    "header") ==
                   getFacesContext().getExternalContext().getRequestHeaderMap());


        // headerValues
        assertTrue(

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                                                    "header") ==
                   getFacesContext().getExternalContext().getRequestHeaderMap());


        // headerValues
        assertTrue(
            variableResolver.resolveVariable(getFacesContext(),
                                             "headerValues") ==
            getFacesContext().getExternalContext().getRequestHeaderValuesMap());


        // parameter
        assertTrue(variableResolver.resolveVariable(getFacesContext(),

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