Examples of org.apache.struts.config.FormBeanConfig

org.apache.struts.config.FormBeanConfig

A JavaBean representing the configuration information of a <form-bean> element in a Struts configuration file.
@version $Rev: 421119 $ $Date: 2006-01-17 07:26:20 -0500 (Tue, 17 Jan 2006)$ @since Struts 1.1


        String name = mapping.getName();
        if (name == null) {
            return;
        }
        FormBeanConfig config =
            mapping.getApplicationConfig().findFormBeanConfig(name);
        if (config == null) {
            return;
        }
        FormPropertyConfig props[] = config.findFormPropertyConfigs();
        for (int i = 0; i < props.length; i++) {
            set(props[i].getName(), props[i].initial());
        }


    }

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            }
            return;
        }


        // Look up the form bean definition
        FormBeanConfig formBeanConfig =
            appConfig.findFormBeanConfig(mapping.getName());
        if (formBeanConfig == null) {
            JspException e = new JspException
                (messages.getMessage("formTag.formBean", mapping.getName()));
            pageContext.setAttribute(Action.EXCEPTION_KEY, e,
                                     PageContext.REQUEST_SCOPE);
            throw e;
        }


        // Calculate the required values
        name = mapping.getName();
        scope = mapping.getScope();
        type = formBeanConfig.getType();


    }

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            return (null);
        }


        // Look up the form bean configuration information to use
        String name = mapping.getName();
        FormBeanConfig config = appConfig.findFormBeanConfig(name);
        if (config == null) {
            return (null);
        }


        // Look up any existing form bean instance
        if (appConfig.getControllerConfig().getDebug() >= 2) {
            LOG.info(" Looking for ActionForm bean instance in scope '" +
                        mapping.getScope() + "' under attribute key '" +
                        attribute + "'");
        }
        ActionForm instance = null;
        HttpSession session = null;
        if ("request".equals(mapping.getScope())) {
            instance = (ActionForm) request.getAttribute(attribute);
        } else {
            session = request.getSession();
            instance = (ActionForm) session.getAttribute(attribute);
        }


        // Can we recycle the existing form bean instance (if there is one)?
        if (instance != null) {
            if (config.getDynamic()) {
                String className =
                    ((DynaBean) instance).getDynaClass().getName();
                if (className.equals(config.getName())) {
                    if (appConfig.getControllerConfig().getDebug() >= 2) {
                        servlet.log
                            (" Recycling existing DynaActionForm instance " +
                            "of type '" + className + "'");
                    }
                    return (instance);
                }
            } else {
                String className =
                    instance.getClass().getName();
                if (className.equals(config.getType())) {
                    if (appConfig.getControllerConfig().getDebug() >= 2) {
                        servlet.log
                            (" Recycling existing ActionForm instance " +
                            "of class '" + className + "'");
                    }
                    return (instance);
                }
            }
        }


        // Create and return a new form bean instance
        if (config.getDynamic()) {
            try {
                DynaActionFormClass dynaClass =
                    DynaActionFormClass.createDynaActionFormClass(config);
                instance = (ActionForm) dynaClass.newInstance();
            } catch (Throwable t) {
                LOG.error(servlet.getInternal().getMessage
                            ("formBean", config.getName()), t);
                return (null);
            }
        } else {
            try {
                instance = (ActionForm) applicationInstance(config.getType());
            } catch (Throwable t) {
                LOG.error(servlet.getInternal().getMessage
                            ("formBean", config.getType()), t);
                return (null);
            }
        }
        instance.setServlet(servlet);
        instance.reset(mapping, request);

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            return (null);
        }


        // Look up the form bean configuration information to use
        String name = mapping.getName();
        FormBeanConfig config = moduleConfig.findFormBeanConfig(name);


        if (config == null) {
            log.warn("No FormBeanConfig found under '" + name + "'");


            return (null);
        }


        ActionForm instance =
            lookupActionForm(request, attribute, mapping.getScope());


        // Can we recycle the existing form bean instance (if there is one)?
        if ((instance != null) && config.canReuse(instance)) {
            return (instance);
        }


        return createActionForm(config, servlet);
    }

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        // Process form bean extensions.
        FormBeanConfig[] formBeans = config.findFormBeanConfigs();


        for (int i = 0; i < formBeans.length; i++) {
            FormBeanConfig beanConfig = formBeans[i];


            processFormBeanExtension(beanConfig, config);
        }


        for (int i = 0; i < formBeans.length; i++) {
            FormBeanConfig formBean = formBeans[i];


            // Verify that required fields are all present for the form config
            if (formBean.getType() == null) {
                handleValueRequiredException("type", formBean.getName(),
                    "form bean");
            }


            // ... and the property configs
            FormPropertyConfig[] fpcs = formBean.findFormPropertyConfigs();


            for (int j = 0; j < fpcs.length; j++) {
                FormPropertyConfig property = fpcs[j];


                if (property.getType() == null) {
                    handleValueRequiredException("type", property.getName(),
                        "form property");
                }
            }


            // Force creation and registration of DynaActionFormClass instances
            // for all dynamic form beans
            if (formBean.getDynamic()) {
                formBean.getDynaActionFormClass();
            }
        }
    }

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            // Nothing to do, then
            return beanConfig;
        }


        // Make sure that this bean is of the right class
        FormBeanConfig baseConfig = moduleConfig.findFormBeanConfig(ancestor);


        if (baseConfig == null) {
            throw new UnavailableException("Unable to find " + "form bean '"
                + ancestor + "' to extend.");
        }


        // Was our bean's class overridden already?
        if (beanConfig.getClass().equals(FormBeanConfig.class)) {
            // Ensure that our bean is using the correct class
            if (!baseConfig.getClass().equals(beanConfig.getClass())) {
                // Replace the bean with an instance of the correct class
                FormBeanConfig newBeanConfig = null;
                String baseConfigClassName = baseConfig.getClass().getName();


                try {
                    newBeanConfig =
                        (FormBeanConfig) RequestUtils.applicationInstance(baseConfigClassName);


                    // copy the values
                    BeanUtils.copyProperties(newBeanConfig, beanConfig);


                    FormPropertyConfig[] fpc =
                        beanConfig.findFormPropertyConfigs();


                    for (int i = 0; i < fpc.length; i++) {
                        newBeanConfig.addFormPropertyConfig(fpc[i]);
                    }
                } catch (Exception e) {
                    handleCreationException(baseConfigClassName, e);
                }

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                PageContext.REQUEST_SCOPE);
            throw e;
        }


        // Look up the form bean definition
        FormBeanConfig formBeanConfig =
            moduleConfig.findFormBeanConfig(mapping.getName());


        if (formBeanConfig == null) {
            JspException e = null;


            if (mapping.getName() == null) {
                e = new JspException(messages.getMessage("formTag.name", calcAction));
            } else {
                e = new JspException(messages.getMessage("formTag.formBean",
                            mapping.getName(), calcAction));
            }


            pageContext.setAttribute(Globals.EXCEPTION_KEY, e,
                PageContext.REQUEST_SCOPE);
            throw e;
        }


        // Calculate the required values
        beanName = mapping.getAttribute();
        beanScope = mapping.getScope();
        beanType = formBeanConfig.getType();
    }

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    public void setUp() {


        // Construct a FormBeanConfig to be used
        beanConfig = new FormBeanConfig();
        beanConfig.setName("dynaForm");
        beanConfig.setType("org.apache.struts.action.DynaActionForm");


        // Add relevant property definitions
        for (int i = 0; i < dynaProperties.length; i++) {

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        String name = mapping.getName();
        if (name == null) {
            return;
        }
        FormBeanConfig config =
            mapping.getApplicationConfig().findFormBeanConfig(name);
        if (config == null) {
            return;
        }
        FormPropertyConfig props[] = config.findFormPropertyConfigs();
        for (int i = 0; i < props.length; i++) {
            set(props[i].getName(), props[i].initial());
        }


    }

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            beanType = type;
            return;
        }


        // Look up the form bean definition
        FormBeanConfig formBeanConfig =
            appConfig.findFormBeanConfig(mapping.getName());
        if (formBeanConfig == null) {
            JspException e = new JspException
                (messages.getMessage("formTag.formBean", mapping.getName()));
            pageContext.setAttribute(Action.EXCEPTION_KEY, e,
                                     PageContext.REQUEST_SCOPE);
            throw e;
        }


        // Calculate the required values
        beanName = mapping.getAttribute();
        beanScope = mapping.getScope();
        beanType = formBeanConfig.getType();


    }

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