Hibernate load vs get, difference between load vs get, methods load and get,hibernate load and get methods. The lookupdispatchaction is a subclass of dispatchaction. Difference between the dispatchaction and dispatchlookup action is that the latter does a reverse lookup to match the localized value submitted for the button back to the message key. Lookupdispatchaction looks into the resource bundle file and find out the corresponding key name.
It eliminates the need to create separate independent actions for each function. We can map this key name to a method name by overriding the getkeymethodmap method. The basic difference is that lookupdispatchaction uses a map and the message key to look up hence the lookup part of the class name which method to run, while dispatchaction uses the parameter value. Also, a request parameter, which would be visible to. I would like to know some of differences between action, dispathaction and lookupdispatchaction. Where as lookupdispatchaction which is a subclass of it. Lookupdispatchaction provides a mechanism for grouping a set of related functions into a single action, thus eliminating the need to create seperate actions for. The method to execute on a dispatchaction is determined by struts based on the value of a specified request parameter. In this example we will see how to group a set of user related actions like add user, update user and delete user into a single action called useraction. However, if you use internationalization, this wont work because the label of the button could be in any number of languages. Following is an example useraction class that extends dispatchaction. What is the difference between forwardaction and includeaction. What is the difference between dispatchaction and lookupdispatchaction in struts framework.
An abstract action that dispatches to the subclass mapped executes method. This action is useful for developers who prefer to combine many similar actions into a single action class, in order to simplify. We can map this key name to a method name by overriding the getkeymethodmap. What is the difference between dispatchaction and lookupdispatchaction. The difference between lookupdispatchaction and dispatchaction is that the actual method that gets called in lookupdispatchaction is based on a. I created this blog for programming in java related technologies to sharpen my skills and to obtain feedback from others. Mvc2 separate in mvc1 we can have multiple controller servlets but in mvc2 we can have only one controller servlet. Difference between action and dispatch action in struts. Lookupdispatchaction class is much like the dispatchaction. What is the difference between dispatch action and lookup. Difference between dispatchaction and lookupdispatchaction what is the difference between dispatchaction and lookupdispatchaction tiles in lookupdispatchaction struts tiles in lookupdispatchaction hi, i am new in using tiles. What is difference between lookupdispatchaction and.
Dispatchaction class enables a user to collect related functions into a single action. In case of dispatchaction, you have to declare the method name in the. Here the program explained with the programs statistics. It does a reverse lookup on the resource bundle to get the key and then gets the method whose name is associated with the key into the resource bundle.
What are the differences between dispatchaction and. Lookupdispatchaction is subclass of dispatchaction. Apr 28, 2016 you can try these interview questions and answers on java, j2ee, struts, spring, svn, rad, maven, xml, design pattern. This struts interview question is pretty straight forward and i have. It eliminates the need of creating multiple independent actions for each function. The subclass must also include a getkeymethodmap method that maps methods in the class to keys in the struts resource bundle file.
Which is the best website that has a collection of. Hi, dispatchaction dispatches the action based on the parameter value. Find answers to difference between dispatchaction and lookupdisactaction. Heres an example to show the use of dispatchaction. Difference between action and dispatch action in struts dispatch action class is used to group related action into one class. Diff bw dispatchaction lookupdispatchaction oracle. For example, we have a currencyconverterform and we dont want a java class. What is the differnece between look up dispatch and dispatch. You could then use dispatchaction and code the methods add, update, and delete, and struts would forward to the appropriate method based on the button pressed. What are the differences between struts1 and struts2. Dispatch action,struts dispatchaction vs lookupdispatchaction,configuring. The difference between lookupdispatchaction and dispatchaction is that the actual method that gets called in lookupdispatchaction is based on a lookup of a key value.
The message key is then mapped to the name of the dispatch method. Struts flow and architecture 1 a request comes in from a java server page into the actionservlet. This action is useful for developers who prefer to combine many similar actions into a single action class, in. In case of lookupdispatchaction there is no rule to same the button names and method names and in lookupdispatchaction there is a method available in action.
Apr 21, 2010 for example, if the parameter is methodchinese, then the chinese method will be execute. In this tutorial you will learn how to group a set of related functions into a single action using struts dispatchaction. For example, we have a currencyconverterform and we dont want a. A action class extends the dispatchaction, and contains four methods to set the locale into the struts session attribute for the localization. Lazy setting decides whether to load child objects while loading the parent object.
An abstract action that dispatches to a public method that is named by the request parameter whose name is specified by the parameter property of the corresponding actionmapping. An abstract action that dispatches to a public method that is named. What is the differnece between look up dispatch and. For example the validation and workflow interceptors, the validation. Diff bw dispatchaction lookupdispatchaction oracle community. Dispatchaction provides a mechanism for grouping a set of related functions into a single action, thus eliminating the need to create seperate actions for each functions. Dispatchaction dispatches the action based on the parameter value. The difference between lookupdispatchaction and dispatchaction is that the actual method that gets called in lookupdispatchaction is based on a lookup of a key value instead of specifying the method name directly. In most of the cases you would extend this class and override execute method. An abstract action that dispatches to the subclass. In case of dispatchaction, you have to declare the method name in the jsp page. This action is useful for developers who prefer to combine many similar actions into a single action class, in order to simplify their application. Struts framework is an opensource framework for developing the web applications in. Dispatchaction an abstract action that dispatches to a public method that is named by the request parameter whose name is specified by the parameter property of the corresponding actionmapping.
You can try these interview questions and answers on java, j2ee, struts, spring, svn, rad, maven, xml, design pattern. Which is the best website that has a collection of interview questions. You use the same expression for both getting and setting the value of a property. Lookupdispatchaction is one of the builtin actions provided along with the struts framework. Currencyconverterform has properties fromcurrency, tocurrency. Jul 16, 2009 lookupdispatchaction is subclass of dispatchaction in case of dispatchaction, we have to declare the method name in the jsp page. Here in this example you will learn more about struts. This make sure that the child objects are not loaded unless they are explicitly invoked in the application by. What are the differences between dispatchaction and lookupdispatchaction in struts. Mvc1 the controller is jsp where as in mvc2 the contrller is servlet the main difference is mvc1 combines both presentation logic with the business logic. Top 10 struts interview question and answer j2ee javarevisited. The keyword to answer this struts interview questions is mvc design. This class enables a user to collect related functions into a single action class.
Difference between dispatchaction and lookupdisactaction. Struts java2share scjp scwcd syllabus exam pattern. Describe the main difference between lookupdispachaction and dispatchaction classes. The method to execute on a lookupdispachaction is determined by an action itself based on the value of a specified request parameter. I would like to know in which scenarios these classes has to be extended. You need to do this setting respective hibernate mapping file of the parent class. What is the actual difference between lookupdispatchaction and dispatchaction.
What is difference between lookupdispatchaction and dispatchaction. Dispatch action lookupdispatchaction its a parent class of lookupdispatchaction subclass of dispatch action dispatchaction provides a mechanism for grouping a set of related functions into asingle action, thus eliminating the need to create separate actions for each function. Diff bw dispatchaction lookupdispatchaction 843841 apr 10, 2007 4. Ive tried reading some points over the web and its not clear lookupdispatchaction shields the application from the side effect of i18n, also it refers about resourcebundle and locale independent. The main constraint in the dispatchaction is the method name in the action class and the button name in the jsp page should be the same. Tutorial,springs, jsp servlet,jsp servlets,servlets,jsp example,jsp file,jsp. The difference between lookupdispatchaction and dispatchaction is that the actual method that gets called in lookupdispatchaction is based on a lookup of a key value instead of.
May 18, 20 struts lookupdispatchaction example struts lookupdispatch action org. The difference between lookupdispatchaction and dispatchaction is that the. Dispatchaction class provides a mechanism for modularizing a set of related functions into a single action. In simple action class will have only one method called execute. Nov 20, 2010 difference between dispatchaction and lookupdispatchaction. In this tutorial you will learn how to group a set of related functions into a single action using struts lookupdispatchaction. Lookupdispatchaction is subclass of dispatchaction in case of dispatchaction, we have to declare the method name in the jsp page. But here in lookupdispatchaction, we can have different names for the buttons and the methods. Dispatchaction selects the method to execute depending on the request parameter valuewhich is configured in the xml file. Here in this example you will learn more about struts dispatch action that will help you grasping the concept better.
Which is the best website that has a collection of interview. Dispatchaction in struts, java, lookupdispatchaction in struts, resource bundle, struts framework posted in struts 1. Struts interview questions struts faqs jsf interview. Struts dispatchaction class is used to group similar functionality into a single action, and execute the function depends on the given parameter value. Apr 10, 2007 diff bw dispatchaction lookupdispatchaction 843841 apr 10, 2007 4. Struts interview questions struts faqs jsf interview questions. An action class in the struts application extends struts org. Aug 14, 2012 difference between the dispatchaction and dispatchlookup action is that the latter does a reverse lookup to match the localized value submitted for the button back to the message key. The difference between lookupdispatchaction and dispatchaction is that the actual method that gets called in lookupdispatchaction is. The main constraint in the dispatchaction is the method name in the.
Difference between mvc1 and mvc2 hi,mvc is a design pattern. Ive tried reading some points over the web and its not clear lookupdispatchaction shields the application from the side effect of i18n, also it refers. First create a new dynamic web project and configure it as maven project. What is the difference between dispatchaction and lookupdispatchaction in. Mutliclick prevention using struts tokens with code example. As far as i understand the dispatcher is responsible for handling messages for a thread, so does control. The controller requestprocessor will select an appropriate action for each request, create an instance if necessary, and call the execute method. Difference between action and dispatchaction classes grouping related actions into one class is possible using dispatchaction class. Find answers to what is the differnece between look up dispatch and dispatch action in struts from the expert community at experts exchange.
In this example we will see how to group a set of user related actions. Can you please explanin with the practical example. Difference between dispatchaction and lookupdispatchaction. For example, if the parameter is methodchinese, then the chinese method will be execute. The basic difference is that lookupdispatchaction uses a map and the message key to look up hence the lookup part of the class name which method to run, while dispatchaction uses the parameter value directly. Includeaction, dispatchaction, lookupdispatchaction and switchaction. Invoke and invoke called directly on an instance of a control.