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copied!<p>If you used JAXB to generate your classes, you can certainly have something like @XmlElements with different types to parse a List. </p> <p>Now, if you are also using the same JAXB classes with Jersey/Jackson, you can enhance the metadata of the class by adding @JsonTypeInfo and @JsonSubTypes to describe how to format the name of the List/Array of objects. </p> <p>While @JsonTypeInfo describes the type to be added, the @JsonSubTypes gives the options of the enclosed collection. For instance, As.PROPERTY to define a property of the output, as displayed in the example below, where a list of entities that can have elements of different types, including the type itself ("Form") in addition to 2 other types "Field" and "Table".</p> <pre><code>public class Form { @XmlElements({ @XmlElement(name = "field", type = Field.class), @XmlElement(name = "form", type = Form.class), @XmlElement(name = "table", type = Table.class) }) @JsonTypeInfo(use = Id.NAME, include = As.PROPERTY, property = "obj") @JsonSubTypes({ @JsonSubTypes.Type(value = Field.class), @JsonSubTypes.Type(value = Form.class), @JsonSubTypes.Type(value = Table.class) }) @Generated(value = "com.sun.tools.internal.xjc.Driver", date = "2013-11-11T02:08:36-08:00", comments = "JAXB RI v2.2.4-2") @JsonProperty("entities") protected List<Object> fieldOrFormOrTable; </code></pre> <p>The serialization of the object using Jersey's Jackson default serializers with the added metadata will be the following... </p> <pre><code> "entities": [ { "obj": "Table", "row": { "id": 1, "fields": [ { "id": "DEBUGARY", "type": "Text", "kind": "user" } ] }, "id": "DBGARRAY" }, { "obj": "field", "id": "IDBG", "type": "Text", "kind": "user" }, ..., ..., ...] </code></pre>

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