formgenerator.java

来自「Java Pattern Oriented Framework (Jt) 是为了」· Java 代码 · 共 1,156 行 · 第 1/3 页

        oBuffer.append("import javax.servlet.http.HttpServletRequest;\n");
        oBuffer.append("import org.apache.struts.action.*;\n\n");       

        oBuffer.append("public class " + name + " extends ActionForm {\n\n");              


        //generateInputFields (baseClassName);
        
        ngenerateInputFields (inputStream);
        
        oBuffer.append("}");   
        return (oBuffer.toString());

    }

    
    
    private String generateActionForm (ActionForm4 form) {
        //InputStream inputStream = null;
        //FormFile theFile;
        String formName;
        FormBean formBean = new FormBean ();
        FormBeanForm tmp;
        JtMessage msg = new JtMessage (FormBean.READ);
        String className;
        String name;
        
        if (form == null)
            return null;
        
        //className = (String) form.getClassname();
        formName = (String) form.getFormName();
        msg.setMsgContent(formName);
        
        if (formName == null || formName.equals ("")) {
            handleUIError ("Please enter a form name.");
        }   
                             
        tmp = (FormBeanForm) factory.sendMessage(formBean, msg);
        
        if (tmp == null) {
            handleUIError ("ActionForm not found:" + formName);           
        }
        
        if (getObjErrors() != null) {
            return (null);
        }
        
                
        className = tmp.getType();

        pack = retrievePackageName (className);
        
        if (pack != null && !pack.equals(""))
            oBuffer.append("package " + pack +";\n");

        name =  retrieveName (className);
        
        if (name == null) {
            handleError ("Invalid class name");
            return null;           
        }

        oBuffer.append("import javax.servlet.http.HttpServletRequest;\n");
   

        if ("ActionForm".equals(form.getSubclassOf())) {
            oBuffer.append("import org.apache.struts.action.*;\n\n");    
            oBuffer.append("public class " + name + " extends ActionForm {\n\n");              
        } else {
            oBuffer.append("import org.apache.struts.validator.ValidatorForm;\n\n");          
            oBuffer.append("public class " + name + " extends ValidatorForm {\n\n");  
        }
        generateBeanAttributes (tmp);
        
        oBuffer.append("}");   
        return (oBuffer.toString());

    }
    
    
    
    private FormBeanForm generateDynaActionBean (ActionForm2 form) {
        //Element element;
        //JtMessage msg = new JtMessage (JDOMAdapter.ADD_ELEMENT);
        JtMessage msg1 = new JtMessage (JtHashTable.JtGET);
        InputStream inputStream = null;
        FormFile theFile;
        FormBeanForm formBean = new FormBeanForm ();
        JtHashTable attributes;
        JtIterator iterator;
        String attrName;
        BeanProperty prop;
        String type;
        DynaMapping mappings[] = new DynaMapping[FormBeanForm.MAX_ENTRIES];  
        DynaMapping mapping;
        int index = 0, i;
        
        
        if (form == null)
            return (null);
        
        
        formName = form.getFormName();

        if (formName == null || formName.equals ("")) {
            handleUIError ("Please enter a form name.");
        }                   

        
        theFile = form.getTheFile();
        
        
        if (theFile == null || !checkExtension (theFile.getFileName())) {
            handleUIError ("File must be a java class file (.java)");           
        }
        
        if (getObjErrors() != null) {
            return (null);
        }
        
        try {
            inputStream = theFile.getInputStream();
        } catch (Exception e) {
            handleException (e);
        }
        
        if (inputStream == null) {
            handleUIError ("Invalid java class file"); // check 
            return null;
        }   
             
        //adapter = (JDOMAdapter) factory.createObject (JDOMAdapter.JtCLASS_NAME);  
        //element = new Element ("form-bean");
        //element.setAttribute("name", formName);
        
        formBean.setName(formName);
        formBean.setType("org.apache.struts.action.DynaActionForm");
        attributes = retrieveAttributes (inputStream);  
        
        if (attributes == null || (attributes.getSize() < FormBeanForm.MAX_ENTRIES))
            mappings = formBean.getMappings();
        else {
            mappings = new DynaMapping[attributes.getSize()];
            for (i = 0; i < attributes.getSize(); i++) {
                mappings[i] = new DynaMapping ();
            }
            formBean.setMappings(mappings);
        }    

        if (attributes != null) {
            iterator = (JtIterator) attributes.processMessage (new JtMessage (JtHashTable.JtGET_KEYS));

            for (;;) {
                attrName = (String) iterator.processMessage(new JtMessage (JtIterator.JtNEXT));
                //mapping = new DynaMapping ();
                mapping = mappings[index];

                mapping.setName(attrName);

                if (attrName == null)
                    break;

                msg1.setMsgData (attrName);

                prop = (BeanProperty) attributes.processMessage(msg1);

                type = prop.getType();
                if (!(prop.isPrimitive() || 
                        "java.lang.String".equals(type) || "String".equals(type) ||
                        "java.util.Date".equals(type) || "Date".equals(type)))
                    continue;          

                if ("boolean".equals(type))
                    mapping.setType ("java.lang.Boolean");                   
                else
                    mapping.setType ("java.lang.String");


                //mappings[index] = mapping;
                index++;          

            }  
        }
        
        if (index == 0 || attributes == null) {
            mapping = mappings[0];
            mapping.setName("");
            //mappings[0] = mapping;
            
        }
        
        //formBean.setMappings(mappings);
        return (formBean);
    }
    
    

    private String generateDynaForm (ActionForm2 form) {
        //JtFactory factory = new JtFactory ();

        Element element;
        JtMessage msg = new JtMessage (JDOMAdapter.ADD_ELEMENT);
        InputStream inputStream = null;
        FormFile theFile;
        
        //DocType docType;
        //Namespace nameSpace = Namespace.getNamespace("html", "http://www.freedom.org");
        
        if (form == null)
            return (null);
        
        
        //formName = (String) form.get ("formName");
        formName = form.getFormName();

        if (formName == null || formName.equals ("")) {
            handleUIError ("Please enter a form name.");
        }   
        
        
        /*
        baseClassName = (String) form.get ("baseClassName");

        if (baseClassName == null || baseClassName.equals ("")) {
            handleUIError ("Please enter a base class name.");
        } 
        */
        

        
        theFile = form.getTheFile();
        
        //handleTrace ("generateForm:" + theFile.getFileName());
        
        if (theFile == null || !checkExtension (theFile.getFileName())) {
            handleUIError ("File must be a java class file (.java)");           
        }
        
        if (getObjErrors() != null) {
            return (null);
        }
        
        try {
            inputStream = theFile.getInputStream();
        } catch (Exception e) {
            handleException (e);
        }
        
        if (inputStream == null) {
            return null;
        }   
        
        
        
/*
        if (baseClassName == null) {
            handleError ("The className attribute needs to be set.");
            return null;
        }

        if (formName == null) {
            handleError ("The formName attribute needs to be set.");
            return null;
        }
*/

        
        adapter = (JDOMAdapter) factory.createObject (JDOMAdapter.JtCLASS_NAME);  

        element = new Element ("form-bean");
        element.setAttribute("name", formName);
        element.setAttribute("type", "org.apache.struts.action.DynaActionForm");
        msg.setMsgContent (element);

        factory.sendMessage(adapter, msg);


        //generateDynaFields (baseClassName);
        ngenerateDynaFields (inputStream);

        //oBuffer.append("}");   
        return (adapter.getContent());

    }

    // Process object messages

    public Object processMessage (Object message) {

        String msgid = null;
        JtMessage msg = (JtMessage) message;
        Object data;
        JtContext context;
        ActionForm form = null;
        

        if (msg == null)
            return null;

        msgid = (String) msg.getMsgId ();

        if (msgid == null)
            return null;

        factory.setStopClass(JtObject.class);
        
        context = (JtContext) msg.getMsgContext();
        if (context != null)
            form = (ActionForm) context.getActionForm();  

        // Generate descriptors

        if (msgid.equals (JtObject.JtACTIVATE)) {
            
            //data = msg.getMsgData ();
            return ( generateForm ((ActionForm1) form));

        }
        
        if (msgid.equals (FormGenerator.GENERATE_FORM)) {
            
            //data = msg.getMsgData ();
            //return ( generateDynaForm ((ActionForm2) form));
            return ( generateDynaActionBean ((ActionForm2) form));
        }    
        
        if (msgid.equals (FormGenerator.GENERATE_ACTION_FORM)) {
            
            //data = msg.getMsgData ();
            //return ( generateDynaForm ((ActionForm2) form));
            return ( generateActionForm ((ActionForm4) form));
        }   
        // Let the superclass handle all other messages
        return (super.processMessage (message));

    }


    public static void main(String[] args) {

        JtFactory factory = new JtFactory ();  // Jt Factory
        String reply;
        FormGenerator jspGenerator;
        JtMessage msg;

        //factory.setLogging(true);

        if (args.length < 1) {
            System.err.println ("Usage: java Jt.struts.FormGenerator classname");
            return;
        }

        jspGenerator = (FormGenerator) factory.createObject (FormGenerator.JtCLASS_NAME);
        jspGenerator.setClassName(args[0]);  

        jspGenerator.setDynaActionForm(true);       
        jspGenerator.setFormName ("JtForm");  


        msg = new JtMessage (JtObject.JtACTIVATE);


        reply = (String) factory.sendMessage (jspGenerator, msg);



        jspGenerator.processMessage(new JtMessage (JtObject.JtPRINT));


        System.out.println (reply);    

        factory.removeObject (jspGenerator);


    }


}