Re: Can't get hashes to work

Wednesday, June 17, 2009, 9:31:37 PM, Brian Pontarelli wrote:

> I went back through our previous thread and found that using the
> ${bean.coolMap(key)} syntax works. This is systemic based on how FM handles the [] notation right?

The original problem is that, as I said, someHash[key] expects a
*string* as key. Because, the hash type of FTL, by definition, maps
*string* keys to arbitrary values. It's not the same as Java's Map.
(Note that to further complicate the matter, in FTL
someSequenceOrString[index] expects an integer index. So, the [] thing
is used for that too.) Now someBeanWrappedMap(key) has technically
nothing to do with all the []-s, it's just a method call, so it
accepts all kind of keys. If you have a Map with non-string keys, you
must use that.

> -bp
>
>
>
> On Wed, Jun 17, 2009 at 1:19 PM, Brian Pontarelli <[email protected]> wrote:
> So, I have been working on converting everything over to use
> BeansWrapper, but now I can't seem to get my hashes to work at all,
> even with DefaultObjectWrapper. I'm assuming this is something
> simple, but I can't figure it out. Here is my simple bean:
>
> public class Bean {
>    public Map<Integer, String> coolMap = new HashMap<Integer, String>();
>    private int age;
>
>    public int getAge() {
>        return age;
>    }
>
>    public void setAge(int age) {
>        this.age = age;
>    }
> }
>
>
> Here's the code that I'm using to execute the template:
>
>        BeansWrapper ow = new BeansWrapper();
>        ow.setExposeFields(true);
>        ow.setSimpleMapWrapper(true);
>
>        Bean bean = new Bean();
>        bean.coolMap.put(1, "test");
>        bean.setAge(42);
>
>        Map<String, Object> context = new HashMap<String, Object>();
>        context.put("bean", bean);
>
>        Template template =
> freeMarkerConfiguration.getTemplate(templateName, locale);
>        template.setObjectWrapper(ow);
>        template.process(root, writer);
>
>
> The template is pretty simple:
>
>    [#ftl/]
>    Bean [#list bean.coolMap?keys as key]${key} ${bean.coolMap[key]} [/#list] ${bean.age}
>
>
> The error I'm getting is just the standard "Expected number,
> sequence, or string. bean.coolMap evaluated instead to
> freemarker.ext.beans.SimpleMapModel". It is failing at the
> ${bean.coolMap[key]} statement. However, that should work fine, right?
>
> -bp
>
>
>
>

-- 
Best regards,
 Daniel Dekany


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