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javax.xml.bind.annotation
public class: XmlType [javadoc | source]
javax.xml.bind.annotation.XmlType

Maps a class or an enum type to a XML Schema type.

Usage

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

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

Mapping a Class

A class maps to a XML Schema type. A class is a data container for values represented by properties and fields. A schema type is a data container for values represented by schema components within a schema type's content model (e.g. model groups, attributes etc).

To be mapped, a class must either have a public no-arg constructor or a static no-arg factory method. The static factory method can be specified in factoryMethod() and factoryClass() annotation elements. The static factory method or the no-arg constructor is used during unmarshalling to create an instance of this class. If both are present, the static factory method overrides the no-arg constructor.

A class maps to either a XML Schema complex type or a XML Schema simple type. The XML Schema type is derived based on the mapping of JavaBean properties and fields contained within the class. The schema type to which the class is mapped can either be named or anonymous. A class can be mapped to an anonymous schema type by annotating the class with @XmlType(name="").

Either a global element, local element or a local attribute can be associated with an anonymous type as follows:

Mapping to XML Schema Complex Type

Mapping class to XML Schema simple type

A class can be mapped to a XML Schema simple type using the @XmlValue annotation. For additional details and examples, see @XmlValue annotation type.

The following table shows the mapping of the class to a XML Schema complex type or simple type. The notational symbols used in the table are:

Target propOrder ClassBody ComplexType SimpleType
Class {} [property]+ -> elements complexcontent
xs:all
Class non empty [property]+ -> elements complexcontent
xs:sequence
Class X no property -> element complexcontent
empty sequence
Class X 1 [ @XmlValue property] &&
[property]+ ->attributes
simplecontent
Class X 1 [ @XmlValue property ]&&
no properties -> attribute
simpletype

Mapping an enum type

An enum type maps to a XML schema simple type with enumeration facets. The following annotation elements are ignored since they are not meaningful: propOrder() , factoryMethod() , factoryClass() .

Usage with other annotations

This annotation can be used with the following annotations: XmlRootElement , XmlAccessorOrder , XmlAccessorType , XmlEnum . However, XmlAccessorOrder and XmlAccessorType are ignored when this annotation is used on an enum type.

Example 1: Map a class to a complex type with xs:sequence with a customized ordering of JavaBean properties.

  @XmlType(propOrder={"street", "city" , "state", "zip", "name" })
  public class USAddress {
    String getName() {..};
    void setName(String) {..};

    String getStreet() {..};
    void setStreet(String) {..};

    String getCity() {..};
    void setCity(String) {..};

    String getState() {..};
    void setState(String) {..};

    java.math.BigDecimal getZip() {..};
    void setZip(java.math.BigDecimal) {..};
  }

  <!-- XML Schema mapping for USAddress -->
  <xs:complexType name="USAddress">
    <xs:sequence>
      <xs:element name="street" type="xs:string"/>
      <xs:element name="city" type="xs:string"/>
      <xs:element name="state" type="xs:string"/>
      <xs:element name="zip" type="xs:decimal"/>
      <xs:element name="name" type="xs:string"/>
    </xs:all>
  </xs:complexType>

Example 2: Map a class to a complex type with xs:all

@XmlType(propOrder={})
public class USAddress { ...}

<!-- XML Schema mapping for USAddress -->
<xs:complexType name="USAddress">
  <xs:all>
    <xs:element name="name" type="xs:string"/>
    <xs:element name="street" type="xs:string"/>
    <xs:element name="city" type="xs:string"/>
    <xs:element name="state" type="xs:string"/>
    <xs:element name="zip" type="xs:decimal"/>
  </xs:sequence>
</xs:complexType>

Example 3: Map a class to a global element with an anonymous type.

  @XmlRootElement
  @XmlType(name="")
  public class USAddress { ...}

  <!-- XML Schema mapping for USAddress -->
  <xs:element name="USAddress">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="name" type="xs:string"/>
        <xs:element name="street" type="xs:string"/>
        <xs:element name="city" type="xs:string"/>
        <xs:element name="state" type="xs:string"/>
        <xs:element name="zip" type="xs:decimal"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>

Example 4: Map a property to a local element with anonmyous type.

  //Example: Code fragment
  public class Invoice {
      USAddress addr;
          ...
      }

  @XmlType(name="")
  public class USAddress { ... }
  }

  <!-- XML Schema mapping for USAddress -->
  <xs:complexType name="Invoice">
    <xs:sequence>
      <xs:element name="addr">
        <xs:complexType>
          <xs:element name="name", type="xs:string"/>
          <xs:element name="city", type="xs:string"/>
          <xs:element name="city" type="xs:string"/>
          <xs:element name="state" type="xs:string"/>
          <xs:element name="zip" type="xs:decimal"/>
        </xs:complexType>
      ...
    </xs:sequence>
  </xs:complexType>

Example 5: Map a property to an attribute with anonymous type.


    //Example: Code fragment
    public class Item {
        public String name;
        @XmlAttribute
        public USPrice price;
    }

    // map class to anonymous simple type.
    @XmlType(name="")
    public class USPrice {
        @XmlValue
        public java.math.BigDecimal price;
    }

    <!-- Example: XML Schema fragment -->
    <xs:complexType name="Item">
      <xs:sequence>
        <xs:element name="name" type="xs:string"/>
        <xs:attribute name="price">
          <xs:simpleType>
            <xs:restriction base="xs:decimal"/>
          </xs:simpleType>
        </xs:attribute>
      </xs:sequence>
    </xs:complexType>

Example 6: Define a factoryClass and factoryMethod

     @XmlType(name="USAddressType", factoryClass=USAddressFactory.class,
     factoryMethod="getUSAddress")
     public class USAddress {

         private String city;
         private String name;
         private String state;
         private String street;
         private int    zip;

     public USAddress(String name, String street, String city,
         String state, int zip) {
         this.name = name;
         this.street = street;
         this.city = city;
         this.state = state;
         this.zip = zip;
     }
 }

 public class USAddressFactory {
     public static USAddress getUSAddress(){
      return new USAddress("Mark Baker", "23 Elm St",
         "Dayton", "OH", 90952);
 }

Example 7: Define factoryMethod and use the default factoryClass

     @XmlType(name="USAddressType", factoryMethod="getNewInstance")
     public class USAddress {

         private String city;
         private String name;
         private String state;
         private String street;
         private int    zip;

         private USAddress() {}

         public static USAddress getNewInstance(){
             return new USAddress();
         }
     }
Nested Class Summary:
static final class  XmlType.DEFAULT  Used in {@link XmlType#factoryClass()} to signal that either factory mehod is not used or that it's in the class with this {@link XmlType} itself. 
Method from javax.xml.bind.annotation.XmlType Summary:
factoryClass,   factoryMethod,   name,   namespace,   propOrder
Method from javax.xml.bind.annotation.XmlType Detail:
 Class factoryClass() 
    Class containing a no-arg factory method for creating an instance of this class. The default is this class.

    If factoryClass is DEFAULT.class and factoryMethod is "", then there is no static factory method.

    If factoryClass is DEFAULT.class and factoryMethod is not "", then factoryMethod is the name of a static factory method in this class.

    If factoryClass is not DEFAULT.class, then factoryMethod must not be "" and must be the name of a static factory method specified in factoryClass.

 String factoryMethod() 
    Name of a no-arg factory method in the class specified in factoryClass factoryClass().
 String name() 
    Name of the XML Schema type which the class is mapped.
 String namespace() 
    Name of the target namespace of the XML Schema type. By default, this is the target namespace to which the package containing the class is mapped.
 String[] propOrder() 
    Specifies the order for XML Schema elements when class is mapped to a XML Schema complex type.

    Refer to the table for how the propOrder affects the mapping of class

    The propOrder is a list of names of JavaBean properties in the class. Each name in the list is the name of a Java identifier of the JavaBean property. The order in which JavaBean properties are listed is the order of XML Schema elements to which the JavaBean properties are mapped.

    All of the JavaBean properties being mapped to XML Schema elements must be listed.

    A JavaBean property or field listed in propOrder must not be transient or annotated with @XmlTransient.

    The default ordering of JavaBean properties is determined by @XmlAccessorOrder .