Not able to set Mapped Properties in Struts2

Question

I have an iterator which requires to use mapped properties or indexed properties but my getter-setter are not getting those values.

For Ex: (This is just an example. Ultimately the idea is whether I can use mapped property in struts 2 or not. If yes, then how.)

index.jsp:

<s:form action="hello" namespace="foo">    
    <s:textfield name="arp(0)" /> <br/>
    <s:textfield name="prp(0)" /> <br/>
    <s:textfield name="arp(1)" /> <br/>
    <s:textfield name="prp(1)" /> <br/>
    <s:submit   value="Say Hello" /> 
</s:form>

helloWorld.action:

class PRLists {
    String arp;
    String prp;

    public String getArp() {
        return Arp;
    }

    public void setArp(String aRP) {
        arp = aRP;
    }

    public String getPrp() {
        return prp;
    }

    public void setPrp(String pRP) {
        prp = pRP;
    }

}

public class HelloWorldAction {
    ArrayList<PRLists> prlist = new ArrayList<PRLists>();

    public String execute() throws Exception {
        System.out.println("ruuning execute");
        return "success";
    }

    public ArrayList<PRLists> getPrlist() {
        return prlist;
    }

    public void setPrlist(ArrayList<PRLists> prlist) {
        this.prlist = prlist;
    }

    public String getArp(String key) {
        int index = Integer.parseInt(key);
        return prlist[index].arp;
    }

    public void setArp(String key, Object value) {
        System.out.println("set ARP: index:" + index + ", value" + value);
        int index = Integer.parseInt(key);
        prlist[index].arp = value.toString();
    }

    public String getPrp(String key) {
        int index = Integer.parseInt(key);
        return prlist[index].prp;
    }

    public void setPrp(String key, Object value) {
        System.out.println("set PRP, Key:" + key + ", value:" + value);
        int index = Integer.parseInt(key);
        prlist[index].prp = value.toString();
    }
}

Earlier I was having this kind of working functions in struts 1 but now I am trying to move it to struts 2. Now my setter functions in HelloWorldAction.java for arp and prp are not getting called upon form submit.

public void setArp(String key, Object value);
public void setPrp(String key, Object value);  

<s:textfield name="prlist[0].arp" /> can work but we have some dependent code which requires to use fields with name such as <s:textfield name="arp(0)" />. I do not know whether struts 2 supports mapped properties or not. If it supports, then how can I use it.

I also found a related issue: https://issues.liferay.com/browse/LPS-14128

Note: I have made some modifications in question description

Thanks in advance.

Answer 1

You're violating a lot of "rules" here, other than avoiding almost any mechanism provided by the framework. Never put logic in accessors / mutators (getters / setters), never use capitalized variable names, avoid using variables starting with an uppercase letter, read struts Type Conversion, use Struts tags (eg. <s:textfield/> instead of <input type="text" />) whenever possible, and reduce your code to:

public class HelloWorldAction{
    private String name;
    private List<PRLists> arnList = new ArrayList<PRLists>();

    public String execute() throws Exception {
       System.out.println("running execute");
       return "success";
    }

    public List<PRLists> getArnList(){
       return arnList;
    }
    public void setArnList(List<PRLists> arnList){
       this.arnList = arnList;
    }

    public String getName() {
       return name;
    }
    public void setName(String name) {
        System.out.println("set name: "+name);
        this.name = name;
    } 
}

<s:form action="hello" namespace="foo">    
    <s:textfield name="name" label="name" />
    <s:textfield name="arnList[0].arp" /> <br/>
    <s:textfield name="arnList[0].prp" /> <br/>
    <s:textfield name="arnList[1].arp" /> <br/>
    <s:textfield name="arnList[1].prp" /> <br/>
    <s:submit   value="Say Hello" /> 
</s:form>

of in an iterator, as you said (without showing it), like

<s:form action="hello" namespace="foo">
    <s:textfield name="name" label="name" />
    <s:iterator value="arnList" status="rowStatus">
        <s:textfield name="arnList[%{#rowStatus.index}].arp" /> <br/>
        <s:textfield name="arnList[%{#rowStatus.index}].prp" /> <br/>
    </s:iterator>
    <s:submit value="Say Hello" />
</s:form>