/* * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.xml.bind; import javax.xml.bind.annotation.adapters.XmlAdapter; import javax.xml.bind.attachment.AttachmentUnmarshaller; import javax.xml.validation.Schema; import java.io.Reader; /** * The Unmarshaller class governs the process of deserializing XML * data into newly created Java content trees, optionally validating the XML * data as it is unmarshalled. It provides an overloading of unmarshal methods * for many different input kinds. * *

* Unmarshalling from a File: *

* 
 *       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
 *       Unmarshaller u = jc.createUnmarshaller();
 *       Object o = u.unmarshal( new File( "nosferatu.xml" ) );
 *
*
* * *

* Unmarshalling from an InputStream: *

* 
 *       InputStream is = new FileInputStream( "nosferatu.xml" );
 *       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
 *       Unmarshaller u = jc.createUnmarshaller();
 *       Object o = u.unmarshal( is );
 *
*
* *

* Unmarshalling from a URL: *

* 
 *       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
 *       Unmarshaller u = jc.createUnmarshaller();
 *       URL url = new URL( "http://beaker.east/nosferatu.xml" );
 *       Object o = u.unmarshal( url );
 *
*
* *

* Unmarshalling from a StringBuffer using a * javax.xml.transform.stream.StreamSource: *

* 
 *       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
 *       Unmarshaller u = jc.createUnmarshaller();
 *       StringBuffer xmlStr = new StringBuffer( "<?xml version="1.0"?>..." );
 *       Object o = u.unmarshal( new StreamSource( new StringReader( xmlStr.toString() ) ) );
 *
*
* *

* Unmarshalling from a org.w3c.dom.Node: *

* 
 *       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
 *       Unmarshaller u = jc.createUnmarshaller();
 *
 *       DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
 *       dbf.setNamespaceAware(true);
 *       DocumentBuilder db = dbf.newDocumentBuilder();
 *       Document doc = db.parse(new File( "nosferatu.xml"));

 *       Object o = u.unmarshal( doc );
 *
*
* *

* Unmarshalling from a javax.xml.transform.sax.SAXSource using a * client specified validating SAX2.0 parser: *

* 
 *       // configure a validating SAX2.0 parser (Xerces2)
 *       static final String JAXP_SCHEMA_LANGUAGE =
 *           "http://java.sun.com/xml/jaxp/properties/schemaLanguage";
 *       static final String JAXP_SCHEMA_LOCATION =
 *           "http://java.sun.com/xml/jaxp/properties/schemaSource";
 *       static final String W3C_XML_SCHEMA =
 *           "http://www.w3.org/2001/XMLSchema";
 *
 *       System.setProperty( "javax.xml.parsers.SAXParserFactory",
 *                           "org.apache.xerces.jaxp.SAXParserFactoryImpl" );
 *
 *       SAXParserFactory spf = SAXParserFactory.newInstance();
 *       spf.setNamespaceAware(true);
 *       spf.setValidating(true);
 *       SAXParser saxParser = spf.newSAXParser();
 *
 *       try {
 *           saxParser.setProperty(JAXP_SCHEMA_LANGUAGE, W3C_XML_SCHEMA);
 *           saxParser.setProperty(JAXP_SCHEMA_LOCATION, "http://....");
 *       } catch (SAXNotRecognizedException x) {
 *           // exception handling omitted
 *       }
 *
 *       XMLReader xmlReader = saxParser.getXMLReader();
 *       SAXSource source =
 *           new SAXSource( xmlReader, new InputSource( "http://..." ) );
 *
 *       // Setup JAXB to unmarshal
 *       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
 *       Unmarshaller u = jc.createUnmarshaller();
 *       ValidationEventCollector vec = new ValidationEventCollector();
 *       u.setEventHandler( vec );
 *
 *       // turn off the JAXB provider's default validation mechanism to
 *       // avoid duplicate validation
 *       u.setValidating( false )
 *
 *       // unmarshal
 *       Object o = u.unmarshal( source );
 *
 *       // check for events
 *       if( vec.hasEvents() ) {
 *          // iterate over events
 *       }
 *
*
* *

* Unmarshalling from a StAX XMLStreamReader: *

* 
 *       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
 *       Unmarshaller u = jc.createUnmarshaller();
 *
 *       javax.xml.stream.XMLStreamReader xmlStreamReader =
 *           javax.xml.stream.XMLInputFactory().newInstance().createXMLStreamReader( ... );
 *
 *       Object o = u.unmarshal( xmlStreamReader );
 *
*
* *

* Unmarshalling from a StAX XMLEventReader: *

* 
 *       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
 *       Unmarshaller u = jc.createUnmarshaller();
 *
 *       javax.xml.stream.XMLEventReader xmlEventReader =
 *           javax.xml.stream.XMLInputFactory().newInstance().createXMLEventReader( ... );
 *
 *       Object o = u.unmarshal( xmlEventReader );
 *
*
* *

* * Unmarshalling XML Data
*

* Unmarshalling can deserialize XML data that represents either an entire XML document * or a subtree of an XML document. Typically, it is sufficient to use the * unmarshalling methods described by * Unmarshal root element that is declared globally. * These unmarshal methods utilize {@link JAXBContext}'s mapping of global XML element * declarations and type definitions to JAXB mapped classes to initiate the * unmarshalling of the root element of XML data. When the {@link JAXBContext}'s * mappings are not sufficient to unmarshal the root element of XML data, * the application can assist the unmarshalling process by using the * unmarshal by declaredType methods. * These methods are useful for unmarshalling XML data where * the root element corresponds to a local element declaration in the schema. *
* *
* An unmarshal method never returns null. If the unmarshal process is unable to unmarshal * the root of XML content to a JAXB mapped object, a fatal error is reported that * terminates processing by throwing JAXBException. *
* *

* * Unmarshal a root element that is globally declared
*

* The unmarshal methods that do not have an declaredType parameter use * {@link JAXBContext} to unmarshal the root element of an XML data. The {@link JAXBContext} * instance is the one that was used to create this Unmarshaller. The {@link JAXBContext} * instance maintains a mapping of globally declared XML element and type definition names to * JAXB mapped classes. The unmarshal method checks if {@link JAXBContext} has a mapping * from the root element's XML name and/or @xsi:type to a JAXB mapped class. If it does, it umarshalls the * XML data using the appropriate JAXB mapped class. Note that when the root element name is unknown and the root * element has an @xsi:type, the XML data is unmarshalled * using that JAXB mapped class as the value of a {@link JAXBElement}. * When the {@link JAXBContext} object does not have a mapping for the root element's name * nor its @xsi:type, if it exists, * then the unmarshal operation will abort immediately by throwing a {@link UnmarshalException * UnmarshalException}. This exception scenario can be worked around by using the unmarshal by * declaredType methods described in the next subsection. *
* *

* * Unmarshal by Declared Type
*

* The unmarshal methods with a declaredType parameter enable an * application to deserialize a root element of XML data, even when * there is no mapping in {@link JAXBContext} of the root element's XML name. * The unmarshaller unmarshals the root element using the application provided * mapping specified as the declaredType parameter. * Note that even when the root element's element name is mapped by {@link JAXBContext}, * the declaredType parameter overrides that mapping for * deserializing the root element when using these unmarshal methods. * Additionally, when the root element of XML data has an xsi:type attribute and * that attribute's value references a type definition that is mapped * to a JAXB mapped class by {@link JAXBContext}, that the root * element's xsi:type attribute takes * precedence over the unmarshal methods declaredType parameter. * These methods always return a JAXBElement<declaredType> * instance. The table below shows how the properties of the returned JAXBElement * instance are set. * * *

* * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Unmarshal By Declared Type returned JAXBElement *
JAXBElement PropertyValue
namexml element name
valueinstanceof declaredType
declaredTypeunmarshal method declaredType parameter
scopenull (actual scope is unknown)
*

* *

* The following is an example of * unmarshal by declaredType method. *

* Unmarshal by declaredType from a org.w3c.dom.Node: *

* 
 *       Schema fragment for example
 *       <xs:schema>
 *          <xs:complexType name="FooType">...<\xs:complexType>
 *          <!-- global element declaration "PurchaseOrder" -->
 *          <xs:element name="PurchaseOrder">
 *              <xs:complexType>
 *                 <xs:sequence>
 *                    <!-- local element declaration "foo" -->
 *                    <xs:element name="foo" type="FooType"/>
 *                    ...
 *                 </xs:sequence>
 *              </xs:complexType>
 *          </xs:element>
 *       </xs:schema>
 *
 *       JAXBContext jc = JAXBContext.newInstance( "com.acme.foo" );
 *       Unmarshaller u = jc.createUnmarshaller();
 *
 *       DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
 *       dbf.setNamespaceAware(true);
 *       DocumentBuilder db = dbf.newDocumentBuilder();
 *       Document doc = db.parse(new File( "nosferatu.xml"));
 *       Element  fooSubtree = ...; // traverse DOM till reach xml element foo, constrained by a
 *                                  // local element declaration in schema.
 *
 *       // FooType is the JAXB mapping of the type of local element declaration foo.
 *       JAXBElement<FooType> foo = u.unmarshal( fooSubtree, FooType.class);
 *
*
* *

* Support for SAX2.0 Compliant Parsers
*

* A client application has the ability to select the SAX2.0 compliant parser * of their choice. If a SAX parser is not selected, then the JAXB Provider's * default parser will be used. Even though the JAXB Provider's default parser * is not required to be SAX2.0 compliant, all providers are required to allow * a client application to specify their own SAX2.0 parser. Some providers may * require the client application to specify the SAX2.0 parser at schema compile * time. See {@link #unmarshal(javax.xml.transform.Source) unmarshal(Source)} * for more detail. *
* *

* Validation and Well-Formedness
*

*

* A client application can enable or disable JAXP 1.3 validation * mechanism via the setSchema(javax.xml.validation.Schema) API. * Sophisticated clients can specify their own validating SAX 2.0 compliant * parser and bypass the JAXP 1.3 validation mechanism using the * {@link #unmarshal(javax.xml.transform.Source) unmarshal(Source)} API. * *

* Since unmarshalling invalid XML content is defined in JAXB 2.0, * the Unmarshaller default validation event handler was made more lenient * than in JAXB 1.0. When schema-derived code generated * by JAXB 1.0 binding compiler is registered with {@link JAXBContext}, * the default unmarshal validation handler is * {@link javax.xml.bind.helpers.DefaultValidationEventHandler} and it * terminates the marshal operation after encountering either a fatal error or an error. * For a JAXB 2.0 client application, there is no explicitly defined default * validation handler and the default event handling only * terminates the unmarshal operation after encountering a fatal error. * *

* *

* * Supported Properties
*

*

* There currently are not any properties required to be supported by all * JAXB Providers on Unmarshaller. However, some providers may support * their own set of provider specific properties. *

* *

* * Unmarshal Event Callbacks
*

* The {@link Unmarshaller} provides two styles of callback mechanisms * that allow application specific processing during key points in the * unmarshalling process. In 'class defined' event callbacks, application * specific code placed in JAXB mapped classes is triggered during * unmarshalling. 'External listeners' allow for centralized processing * of unmarshal events in one callback method rather than by type event callbacks. *

* 'Class defined' event callback methods allow any JAXB mapped class to specify * its own specific callback methods by defining methods with the following method signature: *

* 
 *   // This method is called immediately after the object is created and before the unmarshalling of this
 *   // object begins. The callback provides an opportunity to initialize JavaBean properties prior to unmarshalling.
 *   void beforeUnmarshal(Unmarshaller, Object parent);
 *
 *   //This method is called after all the properties (except IDREF) are unmarshalled for this object,
 *   //but before this object is set to the parent object.
 *   void afterUnmarshal(Unmarshaller, Object parent);
 *
*
* The class defined callback methods should be used when the callback method requires * access to non-public methods and/or fields of the class. *

* The external listener callback mechanism enables the registration of a {@link Listener} * instance with an {@link Unmarshaller#setListener(Listener)}. The external listener receives all callback events, * allowing for more centralized processing than per class defined callback methods. The external listener * receives events when unmarshalling proces is marshalling to a JAXB element or to JAXB mapped class. *

* The 'class defined' and external listener event callback methods are independent of each other, * both can be called for one event. The invocation ordering when both listener callback methods exist is * defined in {@link Listener#beforeUnmarshal(Object, Object)} and {@link Listener#afterUnmarshal(Object, Object)}. *

* An event callback method throwing an exception terminates the current unmarshal process. * *

* * @author * @see JAXBContext * @see Marshaller * @see Validator * @since 1.6, JAXB 1.0 */ public interface Unmarshaller { /** * Unmarshal XML data from the specified file and return the resulting * content tree. * *

* Implements Unmarshal Global Root Element. * * @param f the file to unmarshal XML data from * @return the newly created root object of the java content tree * * @throws JAXBException * If any unexpected errors occur while unmarshalling * @throws UnmarshalException * If the {@link ValidationEventHandler ValidationEventHandler} * returns false from its handleEvent method or the * Unmarshaller is unable to perform the XML to Java * binding. See Unmarshalling XML Data * @throws IllegalArgumentException * If the file parameter is null */ public Object unmarshal( java.io.File f ) throws JAXBException; /** * Unmarshal XML data from the specified InputStream and return the * resulting content tree. Validation event location information may * be incomplete when using this form of the unmarshal API. * *

* Implements Unmarshal Global Root Element. * * @param is the InputStream to unmarshal XML data from * @return the newly created root object of the java content tree * * @throws JAXBException * If any unexpected errors occur while unmarshalling * @throws UnmarshalException * If the {@link ValidationEventHandler ValidationEventHandler} * returns false from its handleEvent method or the * Unmarshaller is unable to perform the XML to Java * binding. See Unmarshalling XML Data * @throws IllegalArgumentException * If the InputStream parameter is null */ public Object unmarshal( java.io.InputStream is ) throws JAXBException; /** * Unmarshal XML data from the specified Reader and return the * resulting content tree. Validation event location information may * be incomplete when using this form of the unmarshal API, * because a Reader does not provide the system ID. * *

* Implements Unmarshal Global Root Element. * * @param reader the Reader to unmarshal XML data from * @return the newly created root object of the java content tree * * @throws JAXBException * If any unexpected errors occur while unmarshalling * @throws UnmarshalException * If the {@link ValidationEventHandler ValidationEventHandler} * returns false from its handleEvent method or the * Unmarshaller is unable to perform the XML to Java * binding. See Unmarshalling XML Data * @throws IllegalArgumentException * If the InputStream parameter is null * @since 1.6, JAXB 2.0 */ public Object unmarshal( Reader reader ) throws JAXBException; /** * Unmarshal XML data from the specified URL and return the resulting * content tree. * *

* Implements Unmarshal Global Root Element. * * @param url the url to unmarshal XML data from * @return the newly created root object of the java content tree * * @throws JAXBException * If any unexpected errors occur while unmarshalling * @throws UnmarshalException * If the {@link ValidationEventHandler ValidationEventHandler} * returns false from its handleEvent method or the * Unmarshaller is unable to perform the XML to Java * binding. See Unmarshalling XML Data * @throws IllegalArgumentException * If the URL parameter is null */ public Object unmarshal( java.net.URL url ) throws JAXBException; /** * Unmarshal XML data from the specified SAX InputSource and return the * resulting content tree. * *

* Implements Unmarshal Global Root Element. * * @param source the input source to unmarshal XML data from * @return the newly created root object of the java content tree * * @throws JAXBException * If any unexpected errors occur while unmarshalling * @throws UnmarshalException * If the {@link ValidationEventHandler ValidationEventHandler} * returns false from its handleEvent method or the * Unmarshaller is unable to perform the XML to Java * binding. See Unmarshalling XML Data * @throws IllegalArgumentException * If the InputSource parameter is null */ public Object unmarshal( org.xml.sax.InputSource source ) throws JAXBException; /** * Unmarshal global XML data from the specified DOM tree and return the resulting * content tree. * *

* Implements Unmarshal Global Root Element. * * @param node * the document/element to unmarshal XML data from. * The caller must support at least Document and Element. * @return the newly created root object of the java content tree * * @throws JAXBException * If any unexpected errors occur while unmarshalling * @throws UnmarshalException * If the {@link ValidationEventHandler ValidationEventHandler} * returns false from its handleEvent method or the * Unmarshaller is unable to perform the XML to Java * binding. See Unmarshalling XML Data * @throws IllegalArgumentException * If the Node parameter is null * @see #unmarshal(org.w3c.dom.Node, Class) */ public Object unmarshal( org.w3c.dom.Node node ) throws JAXBException; /** * Unmarshal XML data by JAXB mapped declaredType * and return the resulting content tree. * *

* Implements Unmarshal by Declared Type * * @param node * the document/element to unmarshal XML data from. * The caller must support at least Document and Element. * @param declaredType * appropriate JAXB mapped class to hold node's XML data. * * @return JAXB Element representation of node * * @throws JAXBException * If any unexpected errors occur while unmarshalling * @throws UnmarshalException * If the {@link ValidationEventHandler ValidationEventHandler} * returns false from its handleEvent method or the * Unmarshaller is unable to perform the XML to Java * binding. See Unmarshalling XML Data * @throws IllegalArgumentException * If any parameter is null * @since 1.6, JAXB 2.0 */ public JAXBElement unmarshal( org.w3c.dom.Node node, Class declaredType ) throws JAXBException; /** * Unmarshal XML data from the specified XML Source and return the * resulting content tree. * *

* Implements Unmarshal Global Root Element. * *

* * SAX 2.0 Parser Pluggability *

* A client application can choose not to use the default parser mechanism * supplied with their JAXB provider. Any SAX 2.0 compliant parser can be * substituted for the JAXB provider's default mechanism. To do so, the * client application must properly configure a SAXSource containing * an XMLReader implemented by the SAX 2.0 parser provider. If the * XMLReader has an org.xml.sax.ErrorHandler registered * on it, it will be replaced by the JAXB Provider so that validation errors * can be reported via the ValidationEventHandler mechanism of * JAXB. If the SAXSource does not contain an XMLReader, * then the JAXB provider's default parser mechanism will be used. *

* This parser replacement mechanism can also be used to replace the JAXB * provider's unmarshal-time validation engine. The client application * must properly configure their SAX 2.0 compliant parser to perform * validation (as shown in the example above). Any SAXParserExceptions * encountered by the parser during the unmarshal operation will be * processed by the JAXB provider and converted into JAXB * ValidationEvent objects which will be reported back to the * client via the ValidationEventHandler registered with the * Unmarshaller. Note: specifying a substitute validating * SAX 2.0 parser for unmarshalling does not necessarily replace the * validation engine used by the JAXB provider for performing on-demand * validation. *

* The only way for a client application to specify an alternate parser * mechanism to be used during unmarshal is via the * unmarshal(SAXSource) API. All other forms of the unmarshal * method (File, URL, Node, etc) will use the JAXB provider's default * parser and validator mechanisms. * * @param source the XML Source to unmarshal XML data from (providers are * only required to support SAXSource, DOMSource, and StreamSource) * @return the newly created root object of the java content tree * * @throws JAXBException * If any unexpected errors occur while unmarshalling * @throws UnmarshalException * If the {@link ValidationEventHandler ValidationEventHandler} * returns false from its handleEvent method or the * Unmarshaller is unable to perform the XML to Java * binding. See Unmarshalling XML Data * @throws IllegalArgumentException * If the Source parameter is null * @see #unmarshal(javax.xml.transform.Source, Class) */ public Object unmarshal( javax.xml.transform.Source source ) throws JAXBException; /** * Unmarshal XML data from the specified XML Source by declaredType and return the * resulting content tree. * *

* Implements Unmarshal by Declared Type * *

* See SAX 2.0 Parser Pluggability * * @param source the XML Source to unmarshal XML data from (providers are * only required to support SAXSource, DOMSource, and StreamSource) * @param declaredType * appropriate JAXB mapped class to hold source's xml root element * @return Java content rooted by JAXB Element * * @throws JAXBException * If any unexpected errors occur while unmarshalling * @throws UnmarshalException * If the {@link ValidationEventHandler ValidationEventHandler} * returns false from its handleEvent method or the * Unmarshaller is unable to perform the XML to Java * binding. See Unmarshalling XML Data * @throws IllegalArgumentException * If any parameter is null * @since 1.6, JAXB 2.0 */ public JAXBElement unmarshal( javax.xml.transform.Source source, Class declaredType ) throws JAXBException; /** * Unmarshal XML data from the specified pull parser and return the * resulting content tree. * *

* Implements Unmarshal Global Root Element. * *

* This method assumes that the parser is on a START_DOCUMENT or * START_ELEMENT event. Unmarshalling will be done from this * start event to the corresponding end event. If this method * returns successfully, the reader will be pointing at * the token right after the end event. * * @param reader * The parser to be read. * @return * the newly created root object of the java content tree. * * @throws JAXBException * If any unexpected errors occur while unmarshalling * @throws UnmarshalException * If the {@link ValidationEventHandler ValidationEventHandler} * returns false from its handleEvent method or the * Unmarshaller is unable to perform the XML to Java * binding. See Unmarshalling XML Data * @throws IllegalArgumentException * If the reader parameter is null * @throws IllegalStateException * If reader is not pointing to a START_DOCUMENT or * START_ELEMENT event. * @since 1.6, JAXB 2.0 * @see #unmarshal(javax.xml.stream.XMLStreamReader, Class) */ public Object unmarshal( javax.xml.stream.XMLStreamReader reader ) throws JAXBException; /** * Unmarshal root element to JAXB mapped declaredType * and return the resulting content tree. * *

* This method implements unmarshal by declaredType. *

* This method assumes that the parser is on a START_DOCUMENT or * START_ELEMENT event. Unmarshalling will be done from this * start event to the corresponding end event. If this method * returns successfully, the reader will be pointing at * the token right after the end event. * * @param reader * The parser to be read. * @param declaredType * appropriate JAXB mapped class to hold reader's START_ELEMENT XML data. * * @return content tree rooted by JAXB Element representation * * @throws JAXBException * If any unexpected errors occur while unmarshalling * @throws UnmarshalException * If the {@link ValidationEventHandler ValidationEventHandler} * returns false from its handleEvent method or the * Unmarshaller is unable to perform the XML to Java * binding. See Unmarshalling XML Data * @throws IllegalArgumentException * If any parameter is null * @since 1.6, JAXB 2.0 */ public JAXBElement unmarshal( javax.xml.stream.XMLStreamReader reader, Class declaredType ) throws JAXBException; /** * Unmarshal XML data from the specified pull parser and return the * resulting content tree. * *

* This method is an Unmarshal Global Root method. * *

* This method assumes that the parser is on a START_DOCUMENT or * START_ELEMENT event. Unmarshalling will be done from this * start event to the corresponding end event. If this method * returns successfully, the reader will be pointing at * the token right after the end event. * * @param reader * The parser to be read. * @return * the newly created root object of the java content tree. * * @throws JAXBException * If any unexpected errors occur while unmarshalling * @throws UnmarshalException * If the {@link ValidationEventHandler ValidationEventHandler} * returns false from its handleEvent method or the * Unmarshaller is unable to perform the XML to Java * binding. See Unmarshalling XML Data * @throws IllegalArgumentException * If the reader parameter is null * @throws IllegalStateException * If reader is not pointing to a START_DOCUMENT or * START_ELEMENT event. * @since 1.6, JAXB 2.0 * @see #unmarshal(javax.xml.stream.XMLEventReader, Class) */ public Object unmarshal( javax.xml.stream.XMLEventReader reader ) throws JAXBException; /** * Unmarshal root element to JAXB mapped declaredType * and return the resulting content tree. * *

* This method implements unmarshal by declaredType. * *

* This method assumes that the parser is on a START_DOCUMENT or * START_ELEMENT event. Unmarshalling will be done from this * start event to the corresponding end event. If this method * returns successfully, the reader will be pointing at * the token right after the end event. * * @param reader * The parser to be read. * @param declaredType * appropriate JAXB mapped class to hold reader's START_ELEMENT XML data. * * @return content tree rooted by JAXB Element representation * * @throws JAXBException * If any unexpected errors occur while unmarshalling * @throws UnmarshalException * If the {@link ValidationEventHandler ValidationEventHandler} * returns false from its handleEvent method or the * Unmarshaller is unable to perform the XML to Java * binding. See Unmarshalling XML Data * @throws IllegalArgumentException * If any parameter is null * @since 1.6, JAXB 2.0 */ public JAXBElement unmarshal( javax.xml.stream.XMLEventReader reader, Class declaredType ) throws JAXBException; /** * Get an unmarshaller handler object that can be used as a component in * an XML pipeline. * *

* The JAXB Provider can return the same handler object for multiple * invocations of this method. In other words, this method does not * necessarily create a new instance of UnmarshallerHandler. If the * application needs to use more than one UnmarshallerHandler, it * should create more than one Unmarshaller. * * @return the unmarshaller handler object * @see UnmarshallerHandler */ public UnmarshallerHandler getUnmarshallerHandler(); /** * Specifies whether or not the default validation mechanism of the * Unmarshaller should validate during unmarshal operations. * By default, the Unmarshaller does not validate. *

* This method may only be invoked before or after calling one of the * unmarshal methods. *

* This method only controls the JAXB Provider's default unmarshal-time * validation mechanism - it has no impact on clients that specify their * own validating SAX 2.0 compliant parser. Clients that specify their * own unmarshal-time validation mechanism may wish to turn off the JAXB * Provider's default validation mechanism via this API to avoid "double * validation". *

* This method is deprecated as of JAXB 2.0 - please use the new * {@link #setSchema(javax.xml.validation.Schema)} API. * * @param validating true if the Unmarshaller should validate during * unmarshal, false otherwise * @throws JAXBException if an error occurred while enabling or disabling * validation at unmarshal time * @throws UnsupportedOperationException could be thrown if this method is * invoked on an Unmarshaller created from a JAXBContext referencing * JAXB 2.0 mapped classes * @deprecated since JAXB2.0, please see {@link #setSchema(javax.xml.validation.Schema)} */ public void setValidating( boolean validating ) throws JAXBException; /** * Indicates whether or not the Unmarshaller is configured to * validate during unmarshal operations. *

* This API returns the state of the JAXB Provider's default unmarshal-time * validation mechanism. *

* This method is deprecated as of JAXB 2.0 - please use the new * {@link #getSchema()} API. * * @return true if the Unmarshaller is configured to validate during * unmarshal operations, false otherwise * @throws JAXBException if an error occurs while retrieving the validating * flag * @throws UnsupportedOperationException could be thrown if this method is * invoked on an Unmarshaller created from a JAXBContext referencing * JAXB 2.0 mapped classes * @deprecated since JAXB2.0, please see {@link #getSchema()} */ public boolean isValidating() throws JAXBException; /** * Allow an application to register a ValidationEventHandler. *

* The ValidationEventHandler will be called by the JAXB Provider * if any validation errors are encountered during calls to any of the * unmarshal methods. If the client application does not register a * ValidationEventHandler before invoking the unmarshal methods, * then ValidationEvents will be handled by the default event * handler which will terminate the unmarshal operation after the first * error or fatal error is encountered. *

* Calling this method with a null parameter will cause the Unmarshaller * to revert back to the default event handler. * * @param handler the validation event handler * @throws JAXBException if an error was encountered while setting the * event handler */ public void setEventHandler( ValidationEventHandler handler ) throws JAXBException; /** * Return the current event handler or the default event handler if one * hasn't been set. * * @return the current ValidationEventHandler or the default event handler * if it hasn't been set * @throws JAXBException if an error was encountered while getting the * current event handler */ public ValidationEventHandler getEventHandler() throws JAXBException; /** * Set the particular property in the underlying implementation of * Unmarshaller. This method can only be used to set one of * the standard JAXB defined properties above or a provider specific * property. Attempting to set an undefined property will result in * a PropertyException being thrown. See * Supported Properties. * * @param name the name of the property to be set. This value can either * be specified using one of the constant fields or a user * supplied string. * @param value the value of the property to be set * * @throws PropertyException when there is an error processing the given * property or value * @throws IllegalArgumentException * If the name parameter is null */ public void setProperty( String name, Object value ) throws PropertyException; /** * Get the particular property in the underlying implementation of * Unmarshaller. This method can only be used to get one of * the standard JAXB defined properties above or a provider specific * property. Attempting to get an undefined property will result in * a PropertyException being thrown. See * Supported Properties. * * @param name the name of the property to retrieve * @return the value of the requested property * * @throws PropertyException * when there is an error retrieving the given property or value * property name * @throws IllegalArgumentException * If the name parameter is null */ public Object getProperty( String name ) throws PropertyException; /** * Specify the JAXP 1.3 {@link javax.xml.validation.Schema Schema} * object that should be used to validate subsequent unmarshal operations * against. Passing null into this method will disable validation. *

* This method replaces the deprecated {@link #setValidating(boolean) setValidating(boolean)} * API. * *

* Initially this property is set to null. * * @param schema Schema object to validate unmarshal operations against or null to disable validation * @throws UnsupportedOperationException could be thrown if this method is * invoked on an Unmarshaller created from a JAXBContext referencing * JAXB 1.0 mapped classes * @since 1.6, JAXB 2.0 */ public void setSchema( javax.xml.validation.Schema schema ); /** * Get the JAXP 1.3 {@link javax.xml.validation.Schema Schema} object * being used to perform unmarshal-time validation. If there is no * Schema set on the unmarshaller, then this method will return null * indicating that unmarshal-time validation will not be performed. *

* This method provides replacement functionality for the deprecated * {@link #isValidating()} API as well as access to the Schema object. * To determine if the Unmarshaller has validation enabled, simply * test the return type for null: *

* * boolean isValidating = u.getSchema()!=null; * * * @return the Schema object being used to perform unmarshal-time * validation or null if not present * @throws UnsupportedOperationException could be thrown if this method is * invoked on an Unmarshaller created from a JAXBContext referencing * JAXB 1.0 mapped classes * @since 1.6, JAXB 2.0 */ public javax.xml.validation.Schema getSchema(); /** * Associates a configured instance of {@link XmlAdapter} with this unmarshaller. * *

* This is a convenience method that invokes setAdapter(adapter.getClass(),adapter);. * * @see #setAdapter(Class,XmlAdapter) * @throws IllegalArgumentException * if the adapter parameter is null. * @throws UnsupportedOperationException * if invoked agains a JAXB 1.0 implementation. * @since 1.6, JAXB 2.0 */ public void setAdapter( XmlAdapter adapter ); /** * Associates a configured instance of {@link XmlAdapter} with this unmarshaller. * *

* Every unmarshaller internally maintains a * {@link java.util.Map}<{@link Class},{@link XmlAdapter}>, * which it uses for unmarshalling classes whose fields/methods are annotated * with {@link javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter}. * *

* This method allows applications to use a configured instance of {@link XmlAdapter}. * When an instance of an adapter is not given, an unmarshaller will create * one by invoking its default constructor. * * @param type * The type of the adapter. The specified instance will be used when * {@link javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter#value()} * refers to this type. * @param adapter * The instance of the adapter to be used. If null, it will un-register * the current adapter set for this type. * @throws IllegalArgumentException * if the type parameter is null. * @throws UnsupportedOperationException * if invoked agains a JAXB 1.0 implementation. * @since 1.6, JAXB 2.0 */ public void setAdapter( Class type, A adapter ); /** * Gets the adapter associated with the specified type. * * This is the reverse operation of the {@link #setAdapter} method. * * @throws IllegalArgumentException * if the type parameter is null. * @throws UnsupportedOperationException * if invoked agains a JAXB 1.0 implementation. * @since 1.6, JAXB 2.0 */ public A getAdapter( Class type ); /** *

Associate a context that resolves cid's, content-id URIs, to * binary data passed as attachments.

*

*

Unmarshal time validation, enabled via {@link #setSchema(Schema)}, * must be supported even when unmarshaller is performing XOP processing. *

* * @throws IllegalStateException if attempt to concurrently call this * method during a unmarshal operation. */ void setAttachmentUnmarshaller(AttachmentUnmarshaller au); AttachmentUnmarshaller getAttachmentUnmarshaller(); /** *

* Register an instance of an implementation of this class with {@link Unmarshaller} to externally listen * for unmarshal events. *

*

* This class enables pre and post processing of an instance of a JAXB mapped class * as XML data is unmarshalled into it. The event callbacks are called when unmarshalling * XML content into a JAXBElement instance or a JAXB mapped class that represents a complex type definition. * The event callbacks are not called when unmarshalling to an instance of a * Java datatype that represents a simple type definition. *

*

* External listener is one of two different mechanisms for defining unmarshal event callbacks. * See Unmarshal Event Callbacks for an overview. *

* (@link #setListener(Listener)} * (@link #getListener()} * * @since 1.6, JAXB 2.0 */ public static abstract class Listener { /** *

* Callback method invoked before unmarshalling into target. *

*

* This method is invoked immediately after target was created and * before the unmarshalling of this object begins. Note that * if the class of target defines its own beforeUnmarshal method, * the class specific callback method is invoked before this method is invoked. * * @param target non-null instance of JAXB mapped class prior to unmarshalling into it. * @param parent instance of JAXB mapped class that will eventually reference target. * null when target is root element. */ public void beforeUnmarshal(Object target, Object parent) { } /** *

* Callback method invoked after unmarshalling XML data into target. *

*

* This method is invoked after all the properties (except IDREF) are unmarshalled into target, * but before target is set into its parent object. * Note that if the class of target defines its own afterUnmarshal method, * the class specific callback method is invoked before this method is invoked. * * @param target non-null instance of JAXB mapped class prior to unmarshalling into it. * @param parent instance of JAXB mapped class that will reference target. * null when target is root element. */ public void afterUnmarshal(Object target, Object parent) { } } /** *

* Register unmarshal event callback {@link Listener} with this {@link Unmarshaller}. * *

* There is only one Listener per Unmarshaller. Setting a Listener replaces the previous set Listener. * One can unregister current Listener by setting listener to null. * * @param listener provides unmarshal event callbacks for this {@link Unmarshaller} * @since 1.6, JAXB 2.0 */ public void setListener(Listener listener); /** *

Return {@link Listener} registered with this {@link Unmarshaller}. * * @return registered {@link Listener} or null if no Listener is registered with this Unmarshaller. * @since 1.6, JAXB 2.0 */ public Listener getListener(); }