How to define a map of Long values

[roshang]

Hi,

I am trying to define a map of Long/Integer values. I have tried the following but the map values are of type String.

<map>
<entry key="K1">
<value>30000</value>
</entry>
<entry key="K2">
<value>20000</value>
</entry>
<entry key="K3">
<value>20000</value>
</entry>
</map>

I understand that you can't have primitive types (int/long) in a map. So it has to be a Integer/Long. Similar XML in simple properties converts them to integers. I am wondering if there is a way I can specify the type of the value.

I'd be grateful if someone can shed some light on this.
Thanks

Roshan

[katentim]

Try:

<entry key="K1">
  <bean id="num" class="java.lang.Long">
    <constructor-arg><value>30000</value></constructor-arg>
  </bean>
</entry>

[Colin Sampaleanu]

You should be able to use the 'type' attribute for value, i.e.

<value type="java.lang.Long">30000</value>


Regards,

[roshang]

Hi,

Thanks for the replies.

I tried

 <value type="java.lang.Long">30000</value>

but then I get an XML parser error.

Sorry forgot to mention I am using Spring 1.1.4.

I looked at http://www.springframework.org/dtd/spring-beans.dtd and it doesn't seems to have such an attribute.

Did I miss something?

Regards,
Roshan

[Colin Sampaleanu]

Sorry, I sometimes forget that not everybody is living off CVS. This is something that's been added for Spring 1.2. 1.2RC1 should actually be oiut tomorrow, but obviously if you need this in production now, that's somewhat problematic.

Regards,

[katentim]

<value type="java.lang.Long">30000</value>

That's much nicer.

If not upgrading to 1.2RC1 yet, you can use my post in the meantime.

[bonnyr]

See title

[katentim]

what about key types? can they be non string?

Yep added in 1.2 RC1. See JIRA SPR-392

[bonnyr]

what about key types? can they be non string?

Yep added in 1.2 RC1. See JIRA SPR-392

thanks, I'll have a look at that.

The reference document does not mention it - should be added.

[bonnyr]

Note: Spring 1.2

I'm trying to set the keys of the map as class types, but get a type
mismatch conversion exception. My bean file looks like:

            <map>
                <entry>
                    <key>
                        <value type="....finders.NEFinder"/>
                    </key>
                    <ref bean="defaultNEFinder"/>
                </entry>
           </map>

It seems that spring wants to instantiate an instance of the shown type
with some value, but I simply want the class itself as the value of the key.

I'm sure I'm doing something wrong here, but what?