/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.xml.bind.annotation;
import static java.lang.annotation.ElementType.TYPE;
import java.lang.annotation.Retention;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Target;
/**
* <p>
* Maps a class or an enum type to a XML Schema type.
*
* <p><b>Usage</b></p>
* <p> The <tt>@XmlType</tt> annnotation can be used with the following program
* elements:
* <ul>
* <li> a top level class </li>
* <li> an enum type </li>
* </ul>
*
* <p>See "Package Specification" in javax.xml.bind.package javadoc for
* additional common information.</p>
*
* <h3> Mapping a Class </h3>
* <p>
* 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).
* <p> 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 <tt>factoryMethod()</tt> and
* <tt>factoryClass()</tt> 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.
* <p>
* 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 <tt>@XmlType(name="")</tt>.
* <p>
* Either a global element, local element or a local attribute can be
* associated with an anonymous type as follows:
* <ul>
* <li><b>global element: </b> A global element of an anonymous
* type can be derived by annotating the class with @{@link
* XmlRootElement}. See Example 3 below. </li>
*
* <li><b>local element: </b> A JavaBean property that references
* a class annotated with @XmlType(name="") and is mapped to the
* element associated with the anonymous type. See Example 4
* below.</li>
*
* <li><b>attribute: </b> A JavaBean property that references
* a class annotated with @XmlType(name="") and is mapped to the
* attribute associated with the anonymous type. See Example 5 below. </li>
* </ul>
* <b> Mapping to XML Schema Complex Type </b>
* <ul>
* <li>If class is annotated with <tt>@XmlType(name="") </tt>, it
* is mapped to an anonymous type otherwise, the class name maps
* to a complex type name. The <tt>XmlName()</tt> annotation element
* can be used to customize the name.</li>
*
* <li> Properties and fields that are mapped to elements are mapped to a
* content model within a complex type. The annotation element
* <tt>propOrder()</tt> can be used to customize the content model to be
* <tt>xs:all</tt> or <tt>xs:sequence</tt>. It is used for specifying
* the order of XML elements in <tt>xs:sequence</tt>. </li>
*
* <li> Properties and fields can be mapped to attributes within the
* complex type. </li>
*
* <li> The targetnamespace of the XML Schema type can be customized
* using the annotation element <tt>namespace()</tt>. </li>
* </ul>
*
* <p>
* <b> Mapping class to XML Schema simple type </b>
* <p>
* A class can be mapped to a XML Schema simple type using the
* <tt>@XmlValue</tt> annotation. For additional details and examples,
* see @{@link XmlValue} annotation type.
* <p>
* 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:
* <ul>
* <li> -> : represents a mapping </li>
* <li> [x]+ : one or more occurances of x </li>
* <li> [ <tt>@XmlValue</tt> property ]: JavaBean property annotated with
* <tt>@XmlValue</tt></li>
* <li> X : don't care
* </ul>
* <blockquote>
* <table border="1" cellpadding="4" cellspacing="3">
* <tbody>
* <tr>
* <td><b>Target</td>
* <td><b>propOrder</b></td>
* <td><b>ClassBody</b></td>
* <td><b>ComplexType</b></td>
* <td><b>SimpleType</b></td>
* </tr>
*
* <tr valign="top">
* <td>Class</td>
* <td>{}</td>
* <td>[property]+ -> elements</td>
* <td>complexcontent<br>xs:all</td>
* <td> </td>
* </tr>
*
* <tr valign="top">
* <td>Class</td>
* <td>non empty</td>
* <td>[property]+ -> elements</td>
* <td>complexcontent<br>xs:sequence</td>
* <td> </td>
* </tr>
*
* <tr valign="top">
* <td>Class</td>
* <td>X</td>
* <td>no property -> element</td>
* <td>complexcontent<br>empty sequence</td>
* <td> </td>
* </tr>
*
* <tr valign="top">
* <td>Class</td>
* <td>X</td>
* <td>1 [ <tt>@XmlValue</tt> property] && <br> [property]+
* ->attributes</td>
* <td>simplecontent</td>
* <td> </td>
* </tr>
*
* <tr valign="top">
* <td>Class</td>
* <td>X</td>
* <td>1 [ <tt>@XmlValue</tt> property ]&& <br> no properties
* -> attribute</td>
* <td> </td>
* <td>simpletype</td>
* <td> </td>
* </tr>
* </tbody>
* </table>
* </blockquote>
*
* <h3> Mapping an enum type </h3>
*
* An enum type maps to a XML schema simple type with enumeration
* facets. The following annotation elements are ignored since they
* are not meaningful: <tt>propOrder()</tt> , <tt>factoryMethod()</tt> ,
* <tt>factoryClass()</tt> .
*
* <h3> Usage with other annotations </h3>
* <p> This annotation can be used with the following annotations:
* {@link XmlRootElement}, {@link XmlAccessorOrder}, {@link XmlAccessorType},
* {@link XmlEnum}. However, {@link
* XmlAccessorOrder} and {@link XmlAccessorType} are ignored when this
* annotation is used on an enum type.
*
* <p> <b> Example 1: </b> Map a class to a complex type with
* xs:sequence with a customized ordering of JavaBean properties.
* </p>
*
* <pre>
* @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>
* </pre>
* <p> <b> Example 2: </b> Map a class to a complex type with
* xs:all </p>
* <pre>
* @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>
*</pre>
* <p> <b> Example 3: </b> Map a class to a global element with an
* anonymous type.
* </p>
* <pre>
* @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>
* </pre>
*
* <p> <b> Example 4: </b> Map a property to a local element with
* anonmyous type.
* <pre>
* //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>
* </pre>
*
* <p> <b> Example 5: </b> Map a property to an attribute with
* anonymous type.
*
* <pre>
*
* //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>
* </pre>
*
* <p> <b> Example 6: </b> Define a factoryClass and factoryMethod
*
* <pre>
* @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);
* }
*
* </pre>
*
* <p> <b> Example 7: </b> Define factoryMethod and use the default factoryClass
*
* <pre>
* @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();
* }
* }
* </pre>
*
* @author Sekhar Vajjhala, Sun Microsystems, Inc.
* @see XmlElement
* @see XmlAttribute
* @see XmlValue
* @see XmlSchema
* @since JAXB2.0
* @version $Revision: 1.19 $
*/
@Retention(RUNTIME) @Target({TYPE})
public @interface XmlType {
/**
* Name of the XML Schema type which the class is mapped.
*/
String name() default "##default" ;
/**
* Specifies the order for XML Schema elements when class is
* mapped to a XML Schema complex type.
*
* <p> Refer to the table for how the propOrder affects the
* mapping of class </p>
*
* <p> 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. </p>
* <p> All of the JavaBean properties being mapped to XML Schema elements
* must be listed.
* <p> A JavaBean property or field listed in propOrder must not
* be transient or annotated with <tt>@XmlTransient</tt>.
* <p> The default ordering of JavaBean properties is determined
* by @{@link XmlAccessorOrder}.
*/
String[] propOrder() default {""};
/**
* 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 namespace() default "##default" ;
/**
* Class containing a no-arg factory method for creating an
* instance of this class. The default is this class.
*
* <p>If <tt>factoryClass</tt> is DEFAULT.class and
* <tt>factoryMethod</tt> is "", then there is no static factory
* method.
*
* <p>If <tt>factoryClass</tt> is DEFAULT.class and
* <tt>factoryMethod</tt> is not "", then
* <tt>factoryMethod</tt> is the name of a static factory method
* in this class.
*
* <p>If <tt>factoryClass</tt> is not DEFAULT.class, then
* <tt>factoryMethod</tt> must not be "" and must be the name of
* a static factory method specified in <tt>factoryClass</tt>.
*/
Class factoryClass() default DEFAULT.class;
/**
* 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.
*/
static final class DEFAULT {}
/**
* Name of a no-arg factory method in the class specified in
* <tt>factoryClass</tt> factoryClass().
*
*/
String factoryMethod() default "";
}
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