XmlMixed (Java EE 5)

@Retention(value=RUNTIME)
@Target(value={FIELD, METHOD})

注释 JavaBean 多值属性，以支持混合内容。

用法受到以下约束的限制：

• 能够与 @XmlElementRef、@XmlElementRefs 或 @XmlAnyElement 一起使用。

以下内容可以插入 @XmlMixed 注释的多值属性中：

• XML 文本信息项将作为 java.lang.String 值添加。
• 子元素信息项将作为 JAXBElement 实例或带有使用 @XmlRootElement 注释的类的实例添加。
• 没有绑定到 JAXB 映射类的未知内容将作为 Element 插入。（假定已使用 @XmlAnyElement 对属性进行注释。）

以下是绑定和创建混合内容的一个示例：

  <!-- schema fragment having  mixed content -->
  <xs:complextype name="letterBody" mixed="true">
    <xs:sequence>
	<xs:element name="name" type="xs:string">
	</xs:element><xs:element name="quantity" type="xs:positiveInteger">
	</xs:element><xs:element name="productName" type="xs:string">
	<!-- etc. -->
    </xs:element></xs:sequence>
  </xs:complextype>
  <xs:element name="letterBody" type="letterBody">
 
 // Schema-derived Java code: 
 // (Only annotations relevant to mixed content are shown below, 
 //  others are ommitted.)
 import java.math.BigInteger;
 public class ObjectFactory {
 	// element instance factories
 	JAXBElement<letterbody> createLetterBody(LetterBody value);
 	JAXBElement<string>     createLetterBodyName(String value);
 	JAXBElement<biginteger> createLetterBodyQuantity(BigInteger value);
 	JAXBElement</biginteger></string><string>     createLetterBodyProductName(String value);
      // type instance factory
 	LetterBody> createLetterBody();
 }
 </string></letterbody></xs:element>

 public class LetterBody {
 	// Mixed content can contain instances of Element classes
 	// Name, Quantity and ProductName. Text data is represented as
	// java.util.String for text.
	@XmlMixed 
 	@XmlElementRefs({
		@XmlElementRef(name="productName", type=JAXBElement.class),
		@XmlElementRef(name="quantity", type=JAXBElement.class),
		@XmlElementRef(name="name", type=JAXBElement.class)})
	List getContent(){...}
 }
 

以下是具有混合内容的一个 XML 实例文档：

 <letterbody>
Dear Mr.<name>Robert Smith</name>
Your order of <quantity>1</quantity> <productname>Baby
Monitor</productname> shipped from our warehouse. ....
 </letterbody>
 

可以使用以下 JAXB API 调用来构造上述文档：

LetterBody lb = ObjectFactory.createLetterBody();
JAXBElement<letterbody> lbe = ObjectFactory.createLetterBody(lb);
List gcl = lb.getContent();  //add mixed content to general content property.
gcl.add("Dear Mr.");  // add text information item as a String.
 
// add child element information item
gcl.add(ObjectFactory.createLetterBodyName("Robert Smith"));
gcl.add("Your order of "); // add text information item as a String
 
// add children element information items
gcl.add(ObjectFactory.
	 		createLetterBodyQuantity(new BigInteger("1")));
gcl.add(ObjectFactory.createLetterBodyProductName("Baby Monitor"));
gcl.add("shipped from our warehouse");  // add text information item
 </letterbody>

有关其他公共信息，请参阅 javax.xml.bind.package javadoc 中的“包规范”。

since

JAXB2.0

英文文档：

Annotate a JavaBean multi-valued property to support mixed content.

The usage is subject to the following constraints:

• can be used with @XmlElementRef, @XmlElementRefs or @XmlAnyElement

The following can be inserted into @XmlMixed annotated multi-valued property

• XML text information items are added as values of java.lang.String.
• Children element information items are added as instances of JAXBElement or instances with a class that is annotated with @XmlRootElement.
• Unknown content that is not be bound to a JAXB mapped class is inserted as Element. (Assumes property annotated with @XmlAnyElement)

Below is an example of binding and creation of mixed content.

  <!-- schema fragment having  mixed content -->
  <xs:complextype name="letterBody" mixed="true">
    <xs:sequence>
        <xs:element name="name" type="xs:string">
        </xs:element><xs:element name="quantity" type="xs:positiveInteger">
        </xs:element><xs:element name="productName" type="xs:string">
        <!-- etc. -->
    </xs:element></xs:sequence>
  </xs:complextype>
  <xs:element name="letterBody" type="letterBody">
 
 // Schema-derived Java code: 
 // (Only annotations relevant to mixed content are shown below, 
 //  others are ommitted.)
 import java.math.BigInteger;
 public class ObjectFactory {
        // element instance factories
        JAXBElement<letterbody> createLetterBody(LetterBody value);
        JAXBElement<string>     createLetterBodyName(String value);
        JAXBElement<biginteger> createLetterBodyQuantity(BigInteger value);
        JAXBElement</biginteger></string><string>     createLetterBodyProductName(String value);
      // type instance factory
        LetterBody> createLetterBody();
 }
 </string></letterbody></xs:element>

 public class LetterBody {
        // Mixed content can contain instances of Element classes
        // Name, Quantity and ProductName. Text data is represented as
        // java.util.String for text.
        @XmlMixed 
        @XmlElementRefs({
                @XmlElementRef(name="productName", type=JAXBElement.class),
                @XmlElementRef(name="quantity", type=JAXBElement.class),
                @XmlElementRef(name="name", type=JAXBElement.class)})
        List getContent(){...}
 }
 

The following is an XML instance document with mixed content

 <letterbody>
 Dear Mr.<name>Robert Smith</name>
 Your order of <quantity>1</quantity> <productname>Baby
 Monitor</productname> shipped from our warehouse. ....
 </letterbody>
 

that can be constructed using following JAXB API calls.

 LetterBody lb = ObjectFactory.createLetterBody();
 JAXBElement<letterbody> lbe = ObjectFactory.createLetterBody(lb);
 List gcl = lb.getContent();  //add mixed content to general content property.
 gcl.add("Dear Mr.");  // add text information item as a String.
 
 // add child element information item
 gcl.add(ObjectFactory.createLetterBodyName("Robert Smith"));
 gcl.add("Your order of "); // add text information item as a String
 
 // add children element information items
 gcl.add(ObjectFactory.
                        createLetterBodyQuantity(new BigInteger("1")));
 gcl.add(ObjectFactory.createLetterBodyProductName("Baby Monitor"));
 gcl.add("shipped from our warehouse");  // add text information item
 </letterbody>

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

Since:

JAXB2.0

Author:

Kohsuke Kawaguchi

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