CODEWITHSUNDEEP
variablesstruts2
Emaborsa
Emaborsa

Reputation: 2830

Struts2 - getting variable from complex structure

I have a JSP, here the snippet:

<s:set var="tmpIdObj"
       value="form.dati.assegnazioniAnnualitaAtto[#qid].lista[#k.index].idObj"/>

<s:set var="c6" 
       value="form.datiVersioneQuoteAssegnazione[#tmpIdObj].confermata"/>

I would like to write all in one row, avoiding to create the tmpIdObj variable, as following:

<s:set var="c6"
       value="form.datiVersioneQuoteAssegnazione[form.dati.assegnazioniAnnualitaAtto[#qid].lista[#k.index].idObj].confermata"/>

i tried to use singlequotes or other struts sintaxes, but i'm not able to arrange it. I'm looking for the working syntax. Thanks

Upvotes: 0

Views: 350

Answers (2)

user2015707
user2015707

Reputation:

AN EXAMPLE BEFORE GETTING INSANE :

The given code is too complicated, so I created a bean for testing purpose :

package fr.hbonjour.formulaires.actions;

public class PlaceBean {

    private String name;

    private String adress;

    private Long index;

    public PlaceBean()
    {
        this(null, null, null);
    }

    public PlaceBean(Long id, String name, String adress)
    {
        this.setName(name);
        this.setAdress(adress);
        this.setIndex(id);
    }

        ... (getters and setters)

}

Then I tried this :

<s:bean name="fr.hbonjour.formulaires.actions.PlaceBean" var="bean" />

<s:set var="bean.name" value="places[places[0].index].name" />

    <!-- Prompt the name from the created bean -->
<td><s:property value="bean.name"/></td>

places[0].index returns a Long value, and places[places[0].index].name a String value. Here are the values of my list :

0   GABRIEL
1   WU

So places[places[0].index].name= places[0].name = GABRIEL. Indeed the <s:property /> tag displays GABRIEL.

A more tricky example :

<s:bean name="fr.hbonjour.formulaires.actions.PlaceBean" var="bean" />
<s:iterator status="stat" value="places">
    <tr>
        <s:set var="bean.name" value="places[places[#stat.index].index].name" />
        <td><s:property value="bean.name"/></td>
    </tr>
</s:iterator>

So... for #stat.index = 0 for example, places[places[#stat.index].index].name = places[places[0].index].name = places[0].name = GABRIEL. This code returns the following values :

GABRIEL
WU

LET'S CHECK!

form.datiVersioneQuoteAssegnazione[form.dati.assegnazioniAnnualitaAtto[#qid].lista[#k.index].idObj].confermata

We saw that if #k.index was an iterator index and lista[#k.index].idObj returned a Long value, lista[#k.index].idObj worked (places[#stat.index].index worked in our example).

Wa saw that if lista[#k.index].idObj returned a Long value, datiVersioneQuoteAssegnazione[lista[#k.index].idObj].confermata worked (places[places[#stat.index].index].name worked in our example).

SO ?

I suggest you check step by step, as I did in my example, every value of the expression. Because nobody will be able to exactly re-make you test case. Maybe you should especially check the form.dati.assegnazioniAnnualitaAtto[#qid] part of the expression. I don't doubt you will manage to find the answer that way.

But anyway, it's soooo ugly. Good luck.

Upvotes: 1

Andrea Ligios
Andrea Ligios

Reputation: 50203

Force OGNL evaluation by using %{}

<s:set var="c6"
       value="form.datiVersioneQuoteAssegnazione[%{form.dati.assegnazioniAnnualitaAtto[#qid].lista[#k.index].idObj}].confermata"/>

Copy, paste, run and come back here to post the output:

  <div style="border: 5px solid red; width: 100%;">

    form.dati.assegnazioniAnnualitaAtto[#qid].lista[#k.index].idObj: [
    <s:property value="form.dati.assegnazioniAnnualitaAtto[#qid].lista[#k.index].idObj" />]

    form.datiVersioneQuoteAssegnazione[%{form.dati.assegnazioniAnnualitaAtto[#qid].lista[#k.index].idObj}].confermata: [
    <s:property value="form.datiVersioneQuoteAssegnazione[%{form.dati.assegnazioniAnnualitaAtto[#qid].lista[#k.index].idObj}].confermata" />]

    form.datiVersioneQuoteAssegnazione[form.dati.assegnazioniAnnualitaAtto[%{#qid}].lista[%{#k.index}].idObj].confermata: [
    <s:property value="form.datiVersioneQuoteAssegnazione[form.dati.assegnazioniAnnualitaAtto[%{#qid}].lista[%{#k.index}].idObj].confermata" />]

  </div>

Upvotes: 0

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