SPR-7443 - Mentioned @ConstructorProperties in doc

If you want to reference parameters by name in XML
configuration you can also use @ConstructorProperties
to name the parameters in the class.
master
Oliver Gierke 14 years ago
parent e8b9c6d5ff
commit c1d2c36f32
  1. 24
      spring-framework-reference/src/beans-dependencies.xml

@ -170,9 +170,27 @@ public class ExampleBean {
<constructor-arg name="ultimateanswer" value="42"/>
&lt;/bean&gt;</programlisting>
<para>Keep in mind that your code has to be compiled with the debug
flag enabled so that Spring can lookup the parameter name from the
constructor.</para>
<para>Keep in mind that to make this work out of the box your code
has to be compiled with the debug flag enabled so that Spring can
lookup the parameter name from the constructor. If you can't compile
your code with debug flag (or don't want to) you can use
<interfacename><ulink
url="http://download.oracle.com/javase/6/docs/api/java/beans/ConstructorProperties.html">@ConstructorProperties</ulink></interfacename>
JDK annotation to explicitly name your constructor arguments. The
sample class would then have to look as follows:</para>
<programlisting language="java">package examples;
public class ExampleBean {
<lineannotation>// </lineannotation>Fields omitted
@ConstructorProperties({"years", "ultimateAnswer"})
public ExampleBean(int years, String ultimateAnswer) {
this.years = years;
this.ultimateAnswer = ultimateAnswer;
}
}</programlisting>
</section>
</section>
</section>

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