ElementListUnion - Simple xml giving duplicate annotation for generic list objects

I am trying to deserialize a List field using elementlistunion

Customer.java @ElementListUnion({ @ElementList(inline = false, type = Thing.class), @ElementList(inline = false, type = AnotherThing.class) }) List<Object> things = new ArrayList<Object>();

where Thing and AnotherThing are 2 POJO's.But Iam getting the following exception

03-21 18:56:31.940: E/AndroidRuntime(2289): Caused by: org.simpleframework.xml.core.PersistenceException: Duplicate annotation of name 'things' on @org.simpleframework.xml.ElementListUnion(value= [@org.simpleframework.xml.ElementList(data=false, empty=true, entry=, inline=false, name=, required=true, type=class com.data.Thing), @org.simpleframework.xml.ElementList(data=false, empty=true, entry=, inline=false, name=, required=true, type=class com.data.AnotherThing)]) on field 'things' java.util.List com.data.Customer.things

I have been stuck on this for a whole day now. Please Help.

Here is my response xml :

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <customer> <address> <no>122</no> <street>xxx</street> </address> <id>122</id> <name>James Bond</name> <things> <thing> <val>185</val> </thing> <thing> <val>162</val> </thing> </things>


I don't know why are you trying to make two classes in ElementsListUnion. You can use

@ElementList(inline = false, type = Thing.class)

instead of this or

@ElementListUnion({ @ElementList(inline = false, type = Thing.class, required = false), @ElementList(inline = false, type = AnotherThing.class, required = false) })

if you don't send two elements types every time.


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