JAXB API 2.2.12 Source Code

Java Architecture for XML Binding (JAXB) is a Java API that allows Java developers to map Java classes to XML representations.

jaxb-api-2.2.12.jar is the JAR file for the JAXB API 2.2 specification. You can download and use it directly without any building process as shown in the last tutorial.

If you want to rebuild the JAR file, you can download the source code at JAXB API Maven Website.

You can also browse the source code below:

✍: FYIcenter

javax/xml/bind/JAXBContext.java

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 * and Distribution License("CDDL") (collectively, the "License").  You
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package javax.xml.bind;

import org.w3c.dom.Node;

import java.util.Collections;
import java.util.Map;
import java.util.Properties;
import java.io.IOException;
import java.io.InputStream;

/**
 * <p>
 * The <tt>JAXBContext</tt> class provides the client's entry point to the 
 * JAXB API. It provides an abstraction for managing the XML/Java binding 
 * information necessary to implement the JAXB binding framework operations: 
 * unmarshal, marshal and validate.
 *
 * <p>A client application normally obtains new instances of this class using
 * one of these two styles for newInstance methods, although there are other 
 * specialized forms of the method available:
 *
 * <ul>
 *   <li>{@link #newInstance(String,ClassLoader) JAXBContext.newInstance( "com.acme.foo:com.acme.bar" )} <br>
 *   The JAXBContext instance is initialized from a list of colon 
 *   separated Java package names. Each java package contains
 *   JAXB mapped classes, schema-derived classes and/or user annotated 
 *   classes. Additionally, the java package may contain JAXB package annotations 
 *   that must be processed. (see JLS, Section 7.4.1 "Named Packages").
 *   </li>
 *   <li>{@link #newInstance(Class...) JAXBContext.newInstance( com.acme.foo.Foo.class )} <br>
 *    The JAXBContext instance is initialized with class(es) 
 *    passed as parameter(s) and classes that are statically reachable from 
 *    these class(es). See {@link #newInstance(Class...)} for details.
 *   </li>
 * </ul>
 *
 * <p>
 * <i><B>SPEC REQUIREMENT:</B> the provider must supply an implementation
 * class containing the following method signatures:</i>
 *
 * <pre>
 * public static JAXBContext createContext( String contextPath, ClassLoader classLoader, Map&lt;String,Object&gt; properties ) throws JAXBException
 * public static JAXBContext createContext( Class[] classes, Map&lt;String,Object&gt; properties ) throws JAXBException
 * </pre>
 *
 * <p><i>
 * The following JAXB 1.0 requirement is only required for schema to 
 * java interface/implementation binding. It does not apply to JAXB annotated
 * classes. JAXB Providers must generate a <tt>jaxb.properties</tt> file in 
 * each package containing schema derived classes.  The property file must 
 * contain a property named <tt>javax.xml.bind.context.factory</tt> whose 
 * value is the name of the class that implements the <tt>createContext</tt> 
 * APIs.</i>
 * 
 * <p><i>
 * The class supplied by the provider does not have to be assignable to 
 * <tt>javax.xml.bind.JAXBContext</tt>, it simply has to provide a class that
 * implements the <tt>createContext</tt> APIs.</i>
 * 
 * <p><i>
 * In addition, the provider must call the 
 * {@link DatatypeConverter#setDatatypeConverter(DatatypeConverterInterface) 
 * DatatypeConverter.setDatatypeConverter} api prior to any client 
 * invocations of the marshal and unmarshal methods.  This is necessary to 
 * configure the datatype converter that will be used during these operations.</i>
 *
 * <a name="Unmarshalling"></a>
 * <h3>Unmarshalling</h3>
 * <p>
 * The {@link Unmarshaller} class provides the client application the ability
 * to convert XML data into a tree of Java content objects.
 * The unmarshal method allows for 
 * any global XML element declared in the schema to be unmarshalled as
 * the root of an instance document.
 * Additionally, the unmarshal method allows for an unrecognized root element that 
 * has  an xsi:type attribute's value that references a type definition declared in 
 * the schema  to be unmarshalled as the root of an instance document.
 * The <tt>JAXBContext</tt> object 
 * allows the merging of global elements and type definitions across a set of schemas (listed
 * in the <tt>contextPath</tt>). Since each schema in the schema set can belong
 * to distinct namespaces, the unification of schemas to an unmarshalling 
 * context should be namespace independent.  This means that a client 
 * application is able to unmarshal XML documents that are instances of
 * any of the schemas listed in the <tt>contextPath</tt>.  For example:
 *
 * <pre>
 *        JAXBContext jc = JAXBContext.newInstance( "com.acme.foo:com.acme.bar" );
 *        Unmarshaller u = jc.createUnmarshaller();
 *        FooObject fooObj = (FooObject)u.unmarshal( new File( "foo.xml" ) ); // ok
 *        BarObject barObj = (BarObject)u.unmarshal( new File( "bar.xml" ) ); // ok
 *        BazObject bazObj = (BazObject)u.unmarshal( new File( "baz.xml" ) ); // error, "com.acme.baz" not in contextPath
 * </pre>
 *
 * <p>
 * The client application may also generate Java content trees explicitly rather
 * than unmarshalling existing XML data.  For all JAXB-annotated value classes,
 * an application can create content using constructors. 
 * For schema-derived interface/implementation classes and for the
 * creation of elements that are not bound to a JAXB-annotated
 * class, an application needs to have access and knowledge about each of 
 * the schema derived <tt> ObjectFactory</tt> classes that exist in each of 
 * java packages contained in the <tt>contextPath</tt>.  For each schema 
 * derived java class, there is a static factory method that produces objects 
 * of that type.  For example, 
 * assume that after compiling a schema, you have a package <tt>com.acme.foo</tt> 
 * that contains a schema derived interface named <tt>PurchaseOrder</tt>.  In 
 * order to create objects of that type, the client application would use the 
 * factory method like this:
 *
 * <pre>
 *       com.acme.foo.PurchaseOrder po = 
 *           com.acme.foo.ObjectFactory.createPurchaseOrder();
 * </pre>
 *
 * <p>
 * Once the client application has an instance of the the schema derived object,
 * it can use the mutator methods to set content on it.
 *
 * <p>
 * For more information on the generated <tt>ObjectFactory</tt> classes, see
 * Section 4.2 <i>Java Package</i> of the specification.
 *
 * <p>
 * <i><B>SPEC REQUIREMENT:</B> the provider must generate a class in each
 * package that contains all of the necessary object factory methods for that 
 * package named ObjectFactory as well as the static 
 * <tt>newInstance( javaContentInterface )</tt> method</i>  
 *
 * <h3>Marshalling</h3>
 * <p>
 * The {@link Marshaller} class provides the client application the ability
 * to convert a Java content tree back into XML data.  There is no difference
 * between marshalling a content tree that is created manually using the factory
 * methods and marshalling a content tree that is the result an <tt>unmarshal
 * </tt> operation.  Clients can marshal a java content tree back to XML data
 * to a <tt>java.io.OutputStream</tt> or a <tt>java.io.Writer</tt>.  The 
 * marshalling process can alternatively produce SAX2 event streams to a 
 * registered <tt>ContentHandler</tt> or produce a DOM Node object.  
 * Client applications have control over the output encoding as well as 
 * whether or not to marshal the XML data as a complete document or 
 * as a fragment.
 *
 * <p>
 * Here is a simple example that unmarshals an XML document and then marshals
 * it back out:
 *
 * <pre>
 *        JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
 *
 *        // unmarshal from foo.xml
 *        Unmarshaller u = jc.createUnmarshaller();
 *        FooObject fooObj = (FooObject)u.unmarshal( new File( "foo.xml" ) );
 *
 *        // marshal to System.out
 *        Marshaller m = jc.createMarshaller();
 *        m.marshal( fooObj, System.out );
 * </pre>
 *
 *
 * <h3>Validation</h3>
 * <p>
 * Validation has been changed significantly since JAXB 1.0.  The {@link Validator}
 * class has been deprecated and made optional.  This means that you are advised
 * not to use this class and, in fact, it may not even be available depending on
 * your JAXB provider.  JAXB 1.0 client applications that rely on <tt>Validator</tt>
 * will still work properly when deployed with the JAXB 1.0 runtime system.
 *
 * In JAXB 2.0, the {@link Unmarshaller} has included convenince methods that expose
 * the JAXP 1.3 {@link javax.xml.validation} framework.  Please refer to the
 * {@link Unmarshaller#setSchema(javax.xml.validation.Schema)} API for more
 * information.
 *
 * 
 * <h3>JAXB Runtime Binding Framework Compatibility</h3>
 * <p>
 * The following JAXB 1.0 restriction only applies to binding schema to 
 * interfaces/implementation classes.
 * Since this binding does not require a common runtime system, a JAXB 
 * client application must not attempt to mix runtime objects (<tt>JAXBContext,
 * Marshaller</tt>, etc. ) from different providers.  This does not 
 * mean that the client application isn't portable, it simply means that a 
 * client has to use a runtime system provided by the same provider that was 
 * used to compile the schema.
 *
 *
 * <h3>Discovery of JAXB implementation</h3>
 * <p>
 * When one of the <tt>newInstance</tt> methods is called, a JAXB implementation is discovered
 * by the following steps.
 *
 * <ol>
 * <li>
 * For each package/class explicitly passed in to the {@link #newInstance} method, in the order they are specified,
 * <tt>jaxb.properties</tt> file is looked up in its package, by using the associated classloader &mdash;
 * this is {@link Class#getClassLoader() the owner class loader} for a {@link Class} argument, and for a package
 * the specified {@link ClassLoader}.
 *
 * <p>
 * If such a file is discovered, it is {@link Properties#load(InputStream) loaded} as a property file, and
 * the value of the {@link #JAXB_CONTEXT_FACTORY} key will be assumed to be the provider factory class.
 * This class is then loaded by the associated classloader discussed above.
 *
 * <p>
 * This phase of the look up allows some packages to force the use of a certain JAXB implementation.
 * (For example, perhaps the schema compiler has generated some vendor extension in the code.)
 *
 * <li>
 * If the system property {@link #JAXB_CONTEXT_FACTORY} exists, then its value is assumed to be the provider
 * factory class. This phase of the look up enables per-JVM override of the JAXB implementation.
 *
 * <li>
 * Look for <tt>/META-INF/services/javax.xml.bind.JAXBContext</tt> file in the associated classloader.
 * This file follows the standard service descriptor convention, and if such a file exists, its content
 * is assumed to be the provider factory class. This phase of the look up is for automatic discovery.
 * It allows users to just put a JAXB implementation in a classpath and use it without any furhter configuration.
 *
 * <li>
 * Finally, if all the steps above fail, then the rest of the look up is unspecified. That said,
 * the recommended behavior is to simply look for some hard-coded platform default JAXB implementation.
 * This phase of the look up is so that JavaSE can have its own JAXB implementation as the last resort.
 * </ol>
 *
 * <p>
 * Once the provider factory class is discovered, its
 * <tt>public static JAXBContext createContext(String,ClassLoader,Map)</tt> method
 * (see {@link #newInstance(String, ClassLoader, Map)} for the parameter semantics.)
 * or <tt>public static JAXBContext createContet(Class[],Map)</tt> method
 * (see {@link #newInstance(Class[], Map)} for the parameter semantics) are invoked
 * to create a {@link JAXBContext}.
 *
 * @author <ul><li>Ryan Shoemaker, Sun Microsystems, Inc.</li><li>Kohsuke Kawaguchi, Sun Microsystems, Inc.</li><li>Joe Fialli, Sun Microsystems, Inc.</li></ul>
 * @see Marshaller
 * @see Unmarshaller
 * @see <a href="http://docs.oracle.com/javase/specs/jls/se7/html/jls-7.html#jls-7.4.1">S 7.4.1 "Named Packages" in Java Language Specification</a>
 * @since 1.6, JAXB 1.0
 */
public abstract class JAXBContext {
    
    /**
     * The name of the property that contains the name of the class capable
     * of creating new <tt>JAXBContext</tt> objects.
     */
    public static final String JAXB_CONTEXT_FACTORY = 
        "javax.xml.bind.context.factory";
       

    protected JAXBContext() {
    }

    
    /**
     * <p>
     * Obtain a new instance of a <tt>JAXBContext</tt> class.
     *
     * <p>
     * This is a convenience method to invoke the
     * {@link #newInstance(String,ClassLoader)} method with
     * the context class loader of the current thread.
     *
     * @throws JAXBException if an error was encountered while creating the
     *                       <tt>JAXBContext</tt> such as
     * <ol>
     *   <li>failure to locate either ObjectFactory.class or jaxb.index in the packages</li>
     *   <li>an ambiguity among global elements contained in the contextPath</li>
     *   <li>failure to locate a value for the context factory provider property</li>
     *   <li>mixing schema derived packages from different providers on the same contextPath</li>
     * </ol>
     */
    public static JAXBContext newInstance( String contextPath ) 
        throws JAXBException {
            
        //return newInstance( contextPath, JAXBContext.class.getClassLoader() );
        return newInstance( contextPath, getContextClassLoader());
    }
    
    /**
     * <p>
     * Obtain a new instance of a <tt>JAXBContext</tt> class.
     *
     * <p>
     * The client application must supply a context path which is a list of 
     * colon (':', \u005Cu003A) separated java package names that contain
     * schema-derived classes and/or fully qualified JAXB-annotated classes. 
     * Schema-derived 
     * code is registered with the JAXBContext by the 
     * ObjectFactory.class generated per package. 
     * Alternatively than being listed in the context path, programmer 
     * annotated JAXB mapped classes can be listed in a 
     * <tt>jaxb.index</tt> resource file, format described below. 
     * Note that a java package can contain both schema-derived classes and 
     * user annotated JAXB classes. Additionally, the java package may 
     * contain JAXB package annotations  that must be processed. (see JLS, 
     * Section 7.4.1 "Named Packages").
     * </p>
     * 
     * <p>
     * Every package listed on the contextPath must meet <b>one or both</b> of the
     * following conditions otherwise a <tt>JAXBException</tt> will be thrown:
     * </p>
     * <ol>
     *   <li>it must contain ObjectFactory.class</li>
     *   <li>it must contain jaxb.index</li>
     * </ol>
     *
     * <p>
     * <b>Format for jaxb.index</b>
     * <p>
     * The file contains a newline-separated list of class names. 
     * Space and tab characters, as well as blank 
     * lines, are ignored. The comment character 
     * is '#' (0x23); on each line all characters following the first comment 
     * character are ignored. The file must be encoded in UTF-8. Classes that 
     * are reachable, as defined in {@link #newInstance(Class...)}, from the
     * listed classes are also registered with JAXBContext. 
     * <p>
     * Constraints on class name occuring in a <tt>jaxb.index</tt> file are:
     * <ul>
     *   <li>Must not end with ".class".</li>
     *   <li>Class names are resolved relative to package containing 
     *       <tt>jaxb.index</tt> file. Only classes occuring directly in package 
     *       containing <tt>jaxb.index</tt> file are allowed.</li>
     *   <li>Fully qualified class names are not allowed.
     *       A qualified class name,relative to current package,
     *       is only allowed to specify a nested or inner class.</li>
     * </ul>
     *
     * <p>
     * To maintain compatibility with JAXB 1.0 schema to java 
     * interface/implementation binding, enabled by schema customization
     * <tt>&lt;jaxb:globalBindings valueClass="false"&gt;</tt>,
     * the JAXB provider will ensure that each package on the context path
     * has a <tt>jaxb.properties</tt> file which contains a value for the 
     * <tt>javax.xml.bind.context.factory</tt> property and that all values
     * resolve to the same provider.  This requirement does not apply to
     * JAXB annotated classes.
     *
     * <p>
     * If there are any global XML element name collisions across the various 
     * packages listed on the <tt>contextPath</tt>, a <tt>JAXBException</tt> 
     * will be thrown.
     *
     * <p>
     * Mixing generated interface/impl bindings from multiple JAXB Providers
     * in the same context path may result in a <tt>JAXBException</tt>
     * being thrown.
     *
     * <p>
     * The steps involved in discovering the JAXB implementation is discussed in the class javadoc.
     *
     * @param contextPath list of java package names that contain schema 
     *                    derived class and/or java to schema (JAXB-annotated)
     *                    mapped classes
     * @param classLoader
     *      This class loader will be used to locate the implementation
     *      classes.
     *
     * @return a new instance of a <tt>JAXBContext</tt>
     * @throws JAXBException if an error was encountered while creating the
     *                       <tt>JAXBContext</tt> such as
     * <ol>
     *   <li>failure to locate either ObjectFactory.class or jaxb.index in the packages</li>
     *   <li>an ambiguity among global elements contained in the contextPath</li>
     *   <li>failure to locate a value for the context factory provider property</li>
     *   <li>mixing schema derived packages from different providers on the same contextPath</li>
     * </ol>
     */
    public static JAXBContext newInstance( String contextPath, ClassLoader classLoader ) throws JAXBException {

        return newInstance(contextPath,classLoader,Collections.<String,Object>emptyMap());
    }

    /**
     * <p>
     * Obtain a new instance of a <tt>JAXBContext</tt> class.
     *
     * <p>
     * This is mostly the same as {@link JAXBContext#newInstance(String, ClassLoader)},
     * but this version allows you to pass in provider-specific properties to configure
     * the instantiation of {@link JAXBContext}.
     *
     * <p>
     * The interpretation of properties is up to implementations. Implementations should
     * throw <tt>JAXBException</tt> if it finds properties that it doesn't understand.
     *
     * @param contextPath list of java package names that contain schema derived classes
     * @param classLoader
     *      This class loader will be used to locate the implementation classes.
     * @param properties
     *      provider-specific properties. Can be null, which means the same thing as passing
     *      in an empty map.
     *
     * @return a new instance of a <tt>JAXBContext</tt>
     * @throws JAXBException if an error was encountered while creating the
     *                       <tt>JAXBContext</tt> such as
     * <ol>
     *   <li>failure to locate either ObjectFactory.class or jaxb.index in the packages</li>
     *   <li>an ambiguity among global elements contained in the contextPath</li>
     *   <li>failure to locate a value for the context factory provider property</li>
     *   <li>mixing schema derived packages from different providers on the same contextPath</li>
     * </ol>
     * @since 1.6, JAXB 2.0
     */
    public static JAXBContext newInstance( String contextPath, ClassLoader classLoader, Map<String,?>  properties  )
        throws JAXBException {

        return ContextFinder.find(
                        /* The default property name according to the JAXB spec */
                        JAXB_CONTEXT_FACTORY,

                        /* the context path supplied by the client app */
                        contextPath,

                        /* class loader to be used */
                        classLoader,
                        properties );
    }

// TODO: resurrect this once we introduce external annotations
//    /**
//     * <p>
//     * Obtain a new instance of a <tt>JAXBContext</tt> class.
//     *
//     * <p>
//     * The client application must supply a list of classes that the new
//     * context object needs to recognize.
//     *
//     * Not only the new context will recognize all the classes specified,
//     * but it will also recognize any classes that are directly/indirectly
//     * referenced statically from the specified classes.
//     *
//     * For example, in the following Java code, if you do
//     * <tt>newInstance(Foo.class)</tt>, the newly created {@link JAXBContext}
//     * will recognize both <tt>Foo</tt> and <tt>Bar</tt>, but not <tt>Zot</tt>:
//     * <pre>
//     * class Foo {
//     *      Bar b;
//     * }
//     * class Bar { int x; }
//     * class Zot extends Bar { int y; }
//     * </pre>
//     *
//     * Therefore, a typical client application only needs to specify the
//     * top-level classes, but it needs to be careful.
//     *
//     * TODO: if we are to define other mechanisms, refer to them.
//     *
//     * @param externalBindings
//     *      list of external binding files. Can be null or empty if none is used.
//     *      when specified, those files determine how the classes are bound.
//     *
//     * @param classesToBeBound
//     *      list of java classes to be recognized by the new {@link JAXBContext}.
//     *      Can be empty, in which case a {@link JAXBContext} that only knows about
//     *      spec-defined classes will be returned.
//     *
//     * @return
//     *      A new instance of a <tt>JAXBContext</tt>. Always non-null valid object.
//     *
//     * @throws JAXBException
//     *      if an error was encountered while creating the
//     *      <tt>JAXBContext</tt>, such as (but not limited to):
//     * <ol>
//     *  <li>No JAXB implementation was discovered
//     *  <li>Classes use JAXB annotations incorrectly
//     *  <li>Classes have colliding annotations (i.e., two classes with the same type name)
//     *  <li>Specified external bindings are incorrect
//     *  <li>The JAXB implementation was unable to locate
//     *      provider-specific out-of-band information (such as additional
//     *      files generated at the development time.)
//     * </ol>
//     *
//     * @throws IllegalArgumentException
//     *      if the parameter contains {@code null} (i.e., {@code newInstance(null);})
//     *
//     * @since JAXB 2.0
//     */
//    public static JAXBContext newInstance( Source[] externalBindings, Class... classesToBeBound )
//        throws JAXBException {
//
//        // empty class list is not an error, because the context will still include
//        // spec-specified classes like String and Integer.
//        // if(classesToBeBound.length==0)
//        //    throw new IllegalArgumentException();
//
//        // but it is an error to have nulls in it.
//        for( int i=classesToBeBound.length-1; i>=0; i-- )
//            if(classesToBeBound[i]==null)
//                throw new IllegalArgumentException();
//
//        return ContextFinder.find(externalBindings,classesToBeBound);
//    }

    /**
     * <p>
     * Obtain a new instance of a <tt>JAXBContext</tt> class.
     *
     * <p>
     * The client application must supply a list of classes that the new
     * context object needs to recognize.
     *
     * Not only the new context will recognize all the classes specified,
     * but it will also recognize any classes that are directly/indirectly
     * referenced statically from the specified classes. Subclasses of 
     * referenced classes nor <tt>&#64;XmlTransient</tt> referenced classes 
     * are not registered with JAXBContext.
     *
     * For example, in the following Java code, if you do
     * <tt>newInstance(Foo.class)</tt>, the newly created {@link JAXBContext}
     * will recognize both <tt>Foo</tt> and <tt>Bar</tt>, but not <tt>Zot</tt> or <tt>FooBar</tt>:
     * <pre>
     * class Foo {
     *      &#64;XmlTransient FooBar c;
     *      Bar b;
     * }
     * class Bar { int x; }
     * class Zot extends Bar { int y; }
     * class FooBar { }
     * </pre>
     *
     * Therefore, a typical client application only needs to specify the
     * top-level classes, but it needs to be careful.
     *
     * <p>
     * Note that for each java package registered with JAXBContext,
     * when the optional package annotations exist, they must be processed. 
     * (see JLS, Section 7.4.1 "Named Packages").
     *
     * <p>
     * The steps involved in discovering the JAXB implementation is discussed in the class javadoc.
     *
     * @param classesToBeBound
     *      list of java classes to be recognized by the new {@link JAXBContext}.
     *      Can be empty, in which case a {@link JAXBContext} that only knows about
     *      spec-defined classes will be returned.
     *
     * @return
     *      A new instance of a <tt>JAXBContext</tt>. Always non-null valid object.
     *
     * @throws JAXBException
     *      if an error was encountered while creating the
     *      <tt>JAXBContext</tt>, such as (but not limited to):
     * <ol>
     *  <li>No JAXB implementation was discovered
     *  <li>Classes use JAXB annotations incorrectly
     *  <li>Classes have colliding annotations (i.e., two classes with the same type name)
     *  <li>The JAXB implementation was unable to locate
     *      provider-specific out-of-band information (such as additional
     *      files generated at the development time.)
     * </ol>
     *
     * @throws IllegalArgumentException
     *      if the parameter contains {@code null} (i.e., {@code newInstance(null);})
     *
     * @since 1.6, JAXB 2.0
     */
    public static JAXBContext newInstance( Class... classesToBeBound )
        throws JAXBException {

        return newInstance(classesToBeBound,Collections.<String,Object>emptyMap());
    }

    /**
     * <p>
     * Obtain a new instance of a <tt>JAXBContext</tt> class.
     *
     * <p>
     * An overloading of {@link JAXBContext#newInstance(Class...)}
     * to configure 'properties' for this instantiation of {@link JAXBContext}.
     *
     * <p>
     * The interpretation of properties is up to implementations. Implementations should
     * throw <tt>JAXBException</tt> if it finds properties that it doesn't understand.
     *
     * @param classesToBeBound
     *      list of java classes to be recognized by the new {@link JAXBContext}.
     *      Can be empty, in which case a {@link JAXBContext} that only knows about
     *      spec-defined classes will be returned.
     * @param properties
     *      provider-specific properties. Can be null, which means the same thing as passing
     *      in an empty map.
     *
     * @return
     *      A new instance of a <tt>JAXBContext</tt>. Always non-null valid object.
     *
     * @throws JAXBException
     *      if an error was encountered while creating the
     *      <tt>JAXBContext</tt>, such as (but not limited to):
     * <ol>
     *  <li>No JAXB implementation was discovered
     *  <li>Classes use JAXB annotations incorrectly
     *  <li>Classes have colliding annotations (i.e., two classes with the same type name)
     *  <li>The JAXB implementation was unable to locate
     *      provider-specific out-of-band information (such as additional
     *      files generated at the development time.)
     * </ol>
     *
     * @throws IllegalArgumentException
     *      if the parameter contains {@code null} (i.e., {@code newInstance(null,someMap);})
     *
     * @since 1.6, JAXB 2.0
     */
    public static JAXBContext newInstance( Class[] classesToBeBound, Map<String,?> properties )
        throws JAXBException {

        if (classesToBeBound == null) {
                throw new IllegalArgumentException();
        }

        // but it is an error to have nulls in it.
        for (int i = classesToBeBound.length - 1; i >= 0; i--) {
            if (classesToBeBound[i] == null) {
                throw new IllegalArgumentException();
            }
        }

        return ContextFinder.find(classesToBeBound,properties);
    }

    /**
     * Create an <tt>Unmarshaller</tt> object that can be used to convert XML
     * data into a java content tree.
     *
     * @return an <tt>Unmarshaller</tt> object
     *
     * @throws JAXBException if an error was encountered while creating the
     *                       <tt>Unmarshaller</tt> object
     */    
    public abstract Unmarshaller createUnmarshaller() throws JAXBException;
    
    
    /** 
     * Create a <tt>Marshaller</tt> object that can be used to convert a 
     * java content tree into XML data.
     *
     * @return a <tt>Marshaller</tt> object
     *
     * @throws JAXBException if an error was encountered while creating the
     *                       <tt>Marshaller</tt> object
     */    
    public abstract Marshaller createMarshaller() throws JAXBException;
    
    
    /**
     * {@link Validator} has been made optional and deprecated in JAXB 2.0.  Please
     * refer to the javadoc for {@link Validator} for more detail.
     * <p>
     * Create a <tt>Validator</tt> object that can be used to validate a
     * java content tree against its source schema.
     *
     * @return a <tt>Validator</tt> object
     *
     * @throws JAXBException if an error was encountered while creating the
     *                       <tt>Validator</tt> object
     * @deprecated since JAXB2.0
     */    
    public abstract Validator createValidator() throws JAXBException;

    /**
     * Creates a <tt>Binder</tt> object that can be used for
     * associative/in-place unmarshalling/marshalling.
     *
     * @param domType select the DOM API to use by passing in its DOM Node class.
     *
     * @return always a new valid <tt>Binder</tt> object.
     *
     * @throws UnsupportedOperationException
     *      if DOM API corresponding to <tt>domType</tt> is not supported by 
     *      the implementation.
     *
     * @since 1.6, JAXB 2.0
     */
    public <T> Binder<T> createBinder(Class<T> domType) {
        // to make JAXB 1.0 implementations work, this method must not be
        // abstract
        throw new UnsupportedOperationException();
    }

    /**
     * Creates a <tt>Binder</tt> for W3C DOM.
     *
     * @return always a new valid <tt>Binder</tt> object.
     *
     * @since 1.6, JAXB 2.0
     */
    public Binder<Node> createBinder() {
        return createBinder(Node.class);
    }

    /**
     * Creates a <tt>JAXBIntrospector</tt> object that can be used to
     * introspect JAXB objects.
     *
     * @return
     *      always return a non-null valid <tt>JAXBIntrospector</tt> object.
     *
     * @throws UnsupportedOperationException
     *      Calling this method on JAXB 1.0 implementations will throw
     *      an UnsupportedOperationException.
     *  
     * @since 1.6, JAXB 2.0
     */
    public JAXBIntrospector createJAXBIntrospector() {
        // to make JAXB 1.0 implementations work, this method must not be
        // abstract
        throw new UnsupportedOperationException();
    }

    /**
     * Generates the schema documents for this context.
     *
     * @param outputResolver
     *      this object controls the output to which schemas
     *      will be sent.
     *
     * @throws IOException
     *      if {@link SchemaOutputResolver} throws an {@link IOException}.
     *
     * @throws UnsupportedOperationException
     *      Calling this method on JAXB 1.0 implementations will throw
     *      an UnsupportedOperationException.
     *
     * @since 1.6, JAXB 2.0
     */
    public void generateSchema(SchemaOutputResolver outputResolver) throws IOException  {
        // to make JAXB 1.0 implementations work, this method must not be
        // abstract
        throw new UnsupportedOperationException();
    }
    
    private static ClassLoader getContextClassLoader() {
        if (System.getSecurityManager() == null) {
            return Thread.currentThread().getContextClassLoader();
        } else {
            return (ClassLoader) java.security.AccessController.doPrivileged(
                    new java.security.PrivilegedAction() {
                        public java.lang.Object run() {
                            return Thread.currentThread().getContextClassLoader();
                        }
                    });
        }
    }
    
}

javax/xml/bind/JAXBContext.java

 

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File name: jaxb-api-2.2.12-sources.jar
File size: 245023 bytes
Release date: 2014-10-10
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JAXB (Java Architecture for XML Binding) API Specification

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