Load specific indexes of array in Spring 3 XML?

Question

I am trying initialize a boolean[] in my spring (v3) xml. The catch is that I need to load specific indexes of that array. For example, i want to load bArray below:

  boolean[10] bArray;

  bArray[Options.AUTO]=true;
  bArray[Options.AIR]=false;
  bArray[Options.FOOT]=false;

I've seen example like the one below, but this example does not define the index of the value.

<bean id="MyBean" class="org.test.Autos">
    <property name="lists">
        <util:list list-class="java.util.ArrayList">
            <value>true</value>
            <value>false</value>
            <value>false</value>
        </util:list>
    </property>
</bean>

Can this be done in Spring xml? Thanks

Have you tried Java @Configuration and doing it... in Java, but still inside Spring container? — Tomasz Nurkiewicz
– Tomasz Nurkiewicz, Commented Aug 1, 2012 at 17:07
Not sure I understand what you mean, but I do not have access to the code of the calling class (org.test.Autos in my example). I may end up writing a class to wrap the one and just create instance variables that map to each of the positions in the array. is that what you mean? — eze
– eze, Commented Aug 1, 2012 at 17:52

AxxA Osiris · Accepted Answer · 2012-08-02 03:47:09Z

1

This is an example of what Tomasz means by using the @Configuration annotation :

First you need to define the AutosConfiguration class :

@Configuration
public class AutosConfiguration {

    @Bean
    public boolean[] b_Array() {
        boolean[] bArray = new boolean[10];
        bArray[Options.AUTO]=true;
        bArray[Options.AIR]=false;
        bArray[Options.FOOT]=false;
        return bArray;
    }
}

You will use this class to specify a custom configuration for the bArray variable.

Then you need to configure your spring context :

<context:annotation-config />
<context:component-scan base-package="com.my.pack" />

<bean id="MyBean" class="org.test.Autos">
    <property name="bArray" ref="b_Array" />
</bean>

where com.my.pack is the package where the AutosConfiguration class is found.

I hope this was helpful.

edited Aug 2, 2012 at 3:47

answered Aug 1, 2012 at 18:52

AxxA Osiris

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eze Over a year ago

Sorry, I don't think I was clear. My challenge is that I NEED to define the values in XML (so they can be changed without a code change). So, something like: <util:array array-class="java.lang.String"> <entry index="2">true</entry> <entry index="4">false</entry> <entry index="7">false</entry> </util:array>

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