Hi,
Here under are two exercises related to array mapping:
The first one, using a Double[] works as expected.
The second one, using a double[] does not work out of the box, it
crashes the bind compiler.
I've found a workaround (see version b) as a temporary fix, but I'd
really like to see this work as expected.
Details follow.
[May I suggest also to post similar examples of array mapping in JiBX
documentation. ]
Bye
/Hervé
Both exercises marshall to and unmarshall from the same data file, whose
content is :
<?xml version="1.0" encoding="UTF-8"?>
<waiter>
<first-name>John</first-name>
<tips>
<tip>123.456</tip>
<tip>0.0</tip>
<tip>0.48</tip>
</tips>
</waiter>
Here is the first exercise (works OK):
java code :
package omr.jibx;
public class Waiter {
private String firstName;
public Double[] tips;
}
mapping :
<binding>
<mapping name="waiter" class="omr.jibx.Waiter">
<value name="first-name" field="firstName" />
<collection name="tips" field="tips">
<value name="tip" />
</collection>
</mapping>
</binding>
Here is the second exercise, version 'a' (does not work):
java code :
package omr.jibx;
public class Waiter {
private String firstName;
public double[] tips; // notice double instead of Double
}
mapping (unchanged) :
<binding>
<mapping name="waiter" class="omr.jibx.Waiter">
<value name="first-name" field="firstName" />
<collection name="tips" field="tips">
<value name="tip" />
</collection>
</mapping>
</binding>
Here is the output of the binding compiler :
Generating code for mapping omr.jibx.Waiter
Error running binding compiler
*** Error during code generation - please report this error on the JiBX
users list so that the condition can be caught during validation ***
java.lang.IllegalStateException: Internal error: Expected object
reference on stack , found double
full stack:
0: double[]
1: double
at
org.jibx.binding.classes.MethodBuilder.verifyStackObject(MethodBuilder.java:509)
at
org.jibx.binding.classes.MethodBuilder.appendCreateCast(MethodBuilder.java:972)
at
org.jibx.binding.def.NestedCollection.genContentUnmarshal(NestedCollection.java:145)
at
org.jibx.binding.def.ObjectBinding.genUnmarshalContentCall(ObjectBinding.java:757)
at
org.jibx.binding.def.ObjectBinding.genContentUnmarshal(ObjectBinding.java:905)
at
org.jibx.binding.def.ComponentProperty.genContentUnmarshal(ComponentProperty.java:236)
at
org.jibx.binding.def.ElementWrapper.genContentUnmarshal(ElementWrapper.java:272)
at
org.jibx.binding.def.NestedStructure.genContentUnmarshal(NestedStructure.java:156)
at
org.jibx.binding.def.ObjectBinding.genUnmarshalContentCall(ObjectBinding.java:757)
at
org.jibx.binding.def.ObjectBinding.genContentUnmarshal(ObjectBinding.java:905)
at
org.jibx.binding.def.ElementWrapper.genContentUnmarshal(ElementWrapper.java:272)
at
org.jibx.binding.def.MappingDefinition.generateCode(MappingDefinition.java:565)
at
org.jibx.binding.def.DefinitionContext.generateCode(DefinitionContext.java:604)
at
org.jibx.binding.def.BindingDefinition.generateCode(BindingDefinition.java:611)
at org.jibx.binding.Compile.compile(Compile.java:305)
at org.jibx.binding.ant.CompileTask.execute(CompileTask.java:248)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1216)
at org.apache.tools.ant.Project.executeTarget(Project.java:1185)
at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:40)
at org.apache.tools.ant.Project.executeTargets(Project.java:1068)
at org.apache.tools.ant.Main.runBuild(Main.java:668)
at org.apache.tools.ant.Main.startAnt(Main.java:187)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:246)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:67)
And finally, here is the second exercise, once modified into version 'b'
(works OK)
I use temporary Double[] through custom methods :
package omr.jibx;
public class Waiter {
private String firstName;
public double[] tips;
public Double[] getTips()
{
Double[] dd = null;
if (tips != null) {
dd = new Double[tips.length];
for (int i = 0; i < tips.length; i++) {
dd[i] = tips[i];
}
}
return dd;
}
public void setTips (Double[] tips)
{
this.tips = new double[tips.length];
for (int i = 0; i < tips.length; i++) {
this.tips[i] = tips[i];
}
}
}
and the mapping modified accordingly :
<binding>
<mapping name="waiter" class="omr.jibx.Waiter">
<value name="first-name" field="firstName" />
<collection name="tips" get-method="getTips" set-method="setTips">
<value name="tip" />
</collection>
</mapping>
</binding>
And this works (functionnally at least).
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