XmlElements

A container for multiple @{@link XmlElement} annotations. Multiple annotations of the same type are not allowed on a program element. This annotation therefore serves as a container annotation for multiple @XmlElements as follows:

@XmlElements({ @XmlElement(...),@XmlElement(...) })

The @XmlElements annnotation can be used with the following program elements:

• a JavaBean property
• non static, non transient field

Usage

The usage is subject to the following constraints:

• This annotation can be used with the following annotations: @{@link XmlIDREF}, @{@link XmlElementWrapper}.
• If @XmlIDREF is also specified on the JavaBean property, then each @XmlElement.type() must contain a JavaBean property annotated with @XmlID.

See "Package Specification" in javax.xml.bind.package javadoc for additional common information.

Example 1: Map to a list of elements

// Mapped code fragment
public class Foo {
@XmlElements(
@XmlElement(name="A", type=Integer.class),
@XmlElement(name="B", type=Float.class)
}
public List items;
}

<!-- XML Representation for a List of {1,2.5}
XML output is not wrapped using another element -->
...
 1 
 2.5 
...

<!-- XML Schema fragment -->
<xs:complexType name="Foo">
<xs:sequence>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="A" type="xs:int"/>
<xs:element name="B" type="xs:float"/>
<xs:choice>
</xs:sequence>
</xs:complexType>

Example 2: Map to a list of elements wrapped with another element

// Mapped code fragment
public class Foo {
@XmlElementWrapper(name="bar")
@XmlElements(
@XmlElement(name="A", type=Integer.class),
@XmlElement(name="B", type=Float.class)
}
public List items;
}

<!-- XML Schema fragment -->
<xs:complexType name="Foo">
<xs:sequence>
<xs:element name="bar">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="A" type="xs:int"/>
<xs:element name="B" type="xs:float"/>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>

Example 3: Change element name based on type using an adapter.

class Foo {
@XmlJavaTypeAdapter(QtoPAdapter.class)
@XmlElements({
@XmlElement(name="A",type=PX.class),
@XmlElement(name="B",type=PY.class)
})
Q bar;
}

@XmlType abstract class P {...}
@XmlType(name="PX") class PX extends P {...}
@XmlType(name="PY") class PY extends P {...}

<!-- XML Schema fragment -->
<xs:complexType name="Foo">
<xs:sequence>
<xs:element name="bar">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="A" type="PX"/>
<xs:element name="B" type="PY"/>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>