AW: Display HashMap in UI

[Simecsek Timothy]

Hi,

I was able to find a solution that I want to share:

In the domain object I added this method:
    @MemberOrder(sequence = "2.0")
    @PropertyLayout(hidden = Where.ALL_TABLES)
    @CollectionLayout(named = "request headers", render = RenderType.EAGERLY)
    @XmlElementWrapper
    @NotPersistent
    public ArrayList<StringMapElementVo> getStringListElement() {
        final ArrayList<StringMapElementVo> stringMapVo = Lists.newArrayList();
        for (String key : this.getRequestHeaders().keySet()) {
            final StringMapElementVo stringMapElement = new 
StringMapElementVo();
            stringMapElement.setKey(key);
            stringMapElement.setValue(this.getRequestHeaders().get(key));
            stringMapVo.add(stringMapElement);
        }
        return  stringMapVo;
    }

And set the persisted field to not show:
    private Map<String, String> requestHeaders = Maps.newHashMap();

    @PropertyLayout(hidden = Where.EVERYWHERE)
    @Persistent(defaultFetchGroup = "true")
    public Map<String, String> getRequestHeaders() {
        return requestHeaders;
    }

And here the JAXB annotated DTO see [1] :
@XmlRootElement(name = "KeyValueElement")
@DomainObject(editing = Editing.DISABLED)
public class StringMapElementVo {

    public StringMapElementVo() {
    }

    //region > key (property)
    private String key;

    public String getKey() {
        return key;
    }

    public void setKey(final String key) {
        this.key = key;
    }
    //endregion

    //region > value (property)
    private String value;

    public String getValue() {
        return value;
    }

    public void setValue(final String value) {
        this.value = value;
    }
    //endregion
}

I used a very similar approach for a List<String> property also. This way it 
displays in the UI like any other collection of persistent Domain Objects. If 
you need this to act as an object you can add another DTO around it.

Regards Timothy

[1] https://isis.apache.org/guides/ugbtb.html#2.3.-jaxb-annotated-dtos 

-----Ursprüngliche Nachricht-----
Von: Simecsek Timothy
Gesendet: Donnerstag, 22. September 2016 10:58
An: users@isis.apache.org
Betreff: Display HashMap in UI

Hi,

I'm using a Map<String, String> in one of our DomainObjects which is stored in 
one column of this class.
This is the definition:
//region > requestHeaders (collection)
private Map<String, String> requestHeaders = Maps.newHashMap();

@MemberOrder(sequence = "2.0")
@CollectionLayout(named = "request headers", render = RenderType.EAGERLY) 
@Persistent(defaultFetchGroup = "true") public Map<String, String> 
getRequestHeaders() {
    return requestHeaders;
}

private void setRequestHeaders(final Map<String, String> requestHeaders) {
    this.requestHeaders = requestHeaders; } //endregion

Now I want to display the content of the Map in the UI. Currently it shows me:
...
Request Headers               Untitled Hash Map
...

Where "Untitled Hash Map" is a clickable object but when I click on it I'm 
forwarded to the start page.

Is there any possibility to get this working with HashMap?

Thanks Timothy


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for the sole use of the addressee and may contain legally privileged,
confidential, and proprietary data. If you are not the intended recipient,
please advise the sender by replying promptly to this email and then delete
and destroy this email and any attachments without any further use, copying
or forwarding.