spinjar.javax.xml.bind.annotation.XmlElements Maven / Gradle / Ivy
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package javax.xml.bind.annotation;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
/**
*
* 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
*
*
* This annotation is intended for annotation a JavaBean collection
* property (e.g. List).
*
* 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 -->
* ...
* <A> 1 </A>
* <B> 2.5 </B>
* ...
*
* <!-- 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>
*
*
* @author - Kohsuke Kawaguchi, Sun Microsystems, Inc.
- Sekhar Vajjhala, Sun Microsystems, Inc.
* @see XmlElement
* @see XmlElementRef
* @see XmlElementRefs
* @see XmlJavaTypeAdapter
* @since JAXB2.0
*/
@Retention(RUNTIME) @Target({FIELD,METHOD})
public @interface XmlElements {
/**
* Collection of @{@link XmlElement} annotations
*/
XmlElement[] value();
}
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