| /* |
| * Copyright (c) 2005, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0, which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| package jakarta.xml.bind; |
| |
| import org.w3c.dom.Node; |
| |
| import javax.xml.validation.Schema; |
| |
| /** |
| * Enable synchronization between XML infoset nodes and Jakarta XML Binding objects |
| * representing same XML document. |
| * |
| * <p> |
| * An instance of this class maintains the association between XML nodes of |
| * an infoset preserving view and a Jakarta XML Binding representation of an XML document. |
| * Navigation between the two views is provided by the methods |
| * {@link #getXMLNode(Object)} and {@link #getJAXBNode(Object)}. |
| * |
| * <p> |
| * Modifications can be made to either the infoset preserving view or the |
| * Jakarta XML Binding representation of the document while the other view remains |
| * unmodified. The binder is able to synchronize the changes made in the |
| * modified view back into the other view using the appropriate |
| * Binder update methods, {@link #updateXML(Object, Object)} or |
| * {@link #updateJAXB(Object)}. |
| * |
| * <p> |
| * A typical usage scenario is the following: |
| * <ul> |
| * <li>load XML document into an XML infoset representation</li> |
| * <li>{@link #unmarshal(Object)} XML infoset view to Jakarta XML Binding view. |
| * (Note to conserve resources, it is possible to only unmarshal a |
| * subtree of the XML infoset view to the Jakarta XML Binding view.)</li> |
| * <li>application access/updates Jakarta XML Binding view of XML document.</li> |
| * <li>{@link #updateXML(Object)} synchronizes modifications to Jakarta XML Binding view |
| * back into the XML infoset view. Update operation preserves as |
| * much of original XML infoset as possible (i.e. comments, PI, ...)</li> |
| * </ul> |
| * |
| * <p> |
| * A Binder instance is created using the factory method |
| * {@link JAXBContext#createBinder()} or {@link JAXBContext#createBinder(Class)}. |
| * |
| * <p> |
| * @param <XmlNode> the template parameter, <code>XmlNode</code>, is the |
| * root interface/class for the XML infoset preserving representation. |
| * A Binder implementation is required to minimally support |
| * an <code>XmlNode</code> value of <code>org.w3c.dom.Node.class</code>. |
| * A Binder implementation can support alternative XML infoset |
| * preserving representations. |
| * |
| * @author |
| * Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com) |
| * Joseph Fialli |
| * |
| * @since 1.6, JAXB 2.0 |
| */ |
| public abstract class Binder<XmlNode> { |
| |
| /** |
| * Do-nothing constructor for the derived classes. |
| */ |
| protected Binder() {} |
| |
| /** |
| * Unmarshal XML infoset view to a Jakarta XML Binding object tree. |
| * |
| * <p> |
| * This method is similar to {@link Unmarshaller#unmarshal(Node)} |
| * with the addition of maintaining the association between XML nodes |
| * and the produced Jakarta XML Binding objects, enabling future update operations, |
| * {@link #updateXML(Object, Object)} or {@link #updateJAXB(Object)}. |
| * |
| * <p> |
| * When {@link #getSchema()} is non-null, <code>xmlNode</code> |
| * and its descendants is validated during this operation. |
| * |
| * <p> |
| * This method throws {@link UnmarshalException} when the Binder's |
| * {@link JAXBContext} does not have a mapping for the XML element name |
| * or the type, specifiable via {@code @xsi:type}, of {@code xmlNode} |
| * to a Jakarta XML Binding mapped class. The method {@link #unmarshal(Object, Class)} |
| * enables an application to specify the Jakarta XML Binding mapped class that |
| * the {@code xmlNode} should be mapped to. |
| * |
| * @param xmlNode |
| * the document/element to unmarshal XML data from. |
| * |
| * @return |
| * the newly created root object of the Jakarta XML Binding object tree. |
| * |
| * @throws JAXBException |
| * If any unexpected errors occur while unmarshalling |
| * @throws UnmarshalException |
| * If the {@link ValidationEventHandler ValidationEventHandler} |
| * returns false from its {@code handleEvent} method or the |
| * {@code Binder} is unable to perform the XML to Java |
| * binding. |
| * @throws IllegalArgumentException |
| * If the node parameter is null |
| */ |
| public abstract Object unmarshal( XmlNode xmlNode ) throws JAXBException; |
| |
| /** |
| * Unmarshal XML root element by provided {@code declaredType} |
| * to a Jakarta XML Binding object tree. |
| * |
| * <p> |
| * Implements <a href="Unmarshaller.html#unmarshalByDeclaredType">Unmarshal by Declared Type</a> |
| * |
| * <p> |
| * This method is similar to {@link Unmarshaller#unmarshal(Node, Class)} |
| * with the addition of maintaining the association between XML nodes |
| * and the produced Jakarta XML Binding objects, enabling future update operations, |
| * {@link #updateXML(Object, Object)} or {@link #updateJAXB(Object)}. |
| * |
| * <p> |
| * When {@link #getSchema()} is non-null, <code>xmlNode</code> |
| * and its descendants is validated during this operation. |
| * |
| * @param xmlNode |
| * the document/element to unmarshal XML data from. |
| * @param declaredType |
| * appropriate Jakarta XML Binding mapped class to hold {@code node}'s XML data. |
| * @param <T> the declared type |
| * |
| * @return |
| * <a href="JAXBElement.html">JAXBElement</a> representation |
| * of {@code node} |
| * |
| * @throws JAXBException |
| * If any unexpected errors occur while unmarshalling |
| * @throws UnmarshalException |
| * If the {@link ValidationEventHandler ValidationEventHandler} |
| * returns false from its {@code handleEvent} method or the |
| * {@code Binder} is unable to perform the XML to Java |
| * binding. |
| * @throws IllegalArgumentException |
| * If any of the input parameters are null |
| * @since 1.6, JAXB 2.0 |
| */ |
| public abstract <T> JAXBElement<T> |
| unmarshal( XmlNode xmlNode, Class<T> declaredType ) |
| throws JAXBException; |
| |
| /** |
| * Marshal a Jakarta XML Binding object tree to a new XML document. |
| * |
| * <p> |
| * This method is similar to {@link Marshaller#marshal(Object, Node)} |
| * with the addition of maintaining the association between Jakarta XML Binding objects |
| * and the produced XML nodes, |
| * enabling future update operations such as |
| * {@link #updateXML(Object, Object)} or {@link #updateJAXB(Object)}. |
| * |
| * <p> |
| * When {@link #getSchema()} is non-null, the marshalled |
| * xml content is validated during this operation. |
| * |
| * @param jaxbObject |
| * The content tree to be marshalled. |
| * @param xmlNode |
| * The parameter must be a Node that accepts children. |
| * |
| * @throws JAXBException |
| * If any unexpected problem occurs during the marshalling. |
| * @throws MarshalException |
| * If the {@link ValidationEventHandler ValidationEventHandler} |
| * returns false from its {@code handleEvent} method or the |
| * {@code Binder} is unable to marshal {@code jaxbObject} (or any |
| * object reachable from {@code jaxbObject}). |
| * |
| * @throws IllegalArgumentException |
| * If any of the method parameters are null |
| */ |
| public abstract void marshal( Object jaxbObject, XmlNode xmlNode ) throws JAXBException; |
| |
| /** |
| * Gets the XML element associated with the given Jakarta XML Binding object. |
| * |
| * <p> |
| * Once a Jakarta XML Binding object tree is associated with an XML fragment, |
| * this method enables navigation between the two trees. |
| * |
| * <p> |
| * An association between an XML element and a Jakarta XML Binding object is |
| * established by the bind methods and the update methods. |
| * Note that this association is partial; not all XML elements |
| * have associated Jakarta XML Binding objects, and not all Jakarta XML Binding objects have |
| * associated XML elements. |
| * |
| * @param jaxbObject An instance that is reachable from a prior |
| * call to a bind or update method that returned |
| * a Jakarta XML Binding object tree. |
| * |
| * @return |
| * null if the specified Jakarta XML Binding object is not known to this |
| * {@link Binder}, or if it is not associated with an |
| * XML element. |
| * |
| * @throws IllegalArgumentException |
| * If the jaxbObject parameter is null |
| */ |
| public abstract XmlNode getXMLNode( Object jaxbObject ); |
| |
| /** |
| * Gets the Jakarta XML Binding object associated with the given XML element. |
| * |
| * <p> |
| * Once a Jakarta XML Binding object tree is associated with an XML fragment, |
| * this method enables navigation between the two trees. |
| * |
| * <p> |
| * An association between an XML element and a Jakarta XML Binding object is |
| * established by the unmarshal, marshal and update methods. |
| * Note that this association is partial; not all XML elements |
| * have associated Jakarta XML Binding objects, and not all Jakarta XML Binding objects have |
| * associated XML elements. |
| * |
| * @param xmlNode the XML element |
| * |
| * @return |
| * null if the specified XML node is not known to this |
| * {@link Binder}, or if it is not associated with a |
| * Jakarta XML Binding object. |
| * |
| * @throws IllegalArgumentException |
| * If the node parameter is null |
| */ |
| public abstract Object getJAXBNode( XmlNode xmlNode ); |
| |
| /** |
| * Takes an Jakarta XML Binding object and updates |
| * its associated XML node and its descendants. |
| * |
| * <p> |
| * This is a convenience method of: |
| * <pre> |
| * updateXML( jaxbObject, getXMLNode(jaxbObject)); |
| * </pre> |
| * |
| * @param jaxbObject the XML Binding object |
| * |
| * @return the XML node associated with XML Binding object |
| * |
| * @throws JAXBException |
| * If any unexpected problem occurs updating corresponding XML content. |
| * @throws IllegalArgumentException |
| * If the jaxbObject parameter is null |
| */ |
| public abstract XmlNode updateXML( Object jaxbObject ) throws JAXBException; |
| |
| /** |
| * Changes in Jakarta XML Binding object tree are updated in its associated XML parse tree. |
| * |
| * <p> |
| * This operation can be thought of as an "in-place" marshalling. |
| * The difference is that instead of creating a whole new XML tree, |
| * this operation updates an existing tree while trying to preserve |
| * the XML as much as possible. |
| * |
| * <p> |
| * For example, unknown elements/attributes in XML that were not bound |
| * to Jakarta XML Binding will be left untouched (whereas a marshalling operation |
| * would create a new tree that doesn't contain any of those.) |
| * |
| * <p> |
| * As a side-effect, this operation updates the association between |
| * XML nodes and Jakarta XML Binding objects. |
| * |
| * @param jaxbObject root of potentially modified Jakarta XML Binding object tree |
| * @param xmlNode root of update target XML parse tree |
| * |
| * @return |
| * Returns the updated XML node. Typically, this is the same |
| * node you passed in as <i>xmlNode</i>, but it maybe |
| * a different object, for example when the tag name of the object |
| * has changed. |
| * |
| * @throws JAXBException |
| * If any unexpected problem occurs updating corresponding XML content. |
| * @throws IllegalArgumentException |
| * If any of the input parameters are null |
| */ |
| public abstract XmlNode updateXML( Object jaxbObject, XmlNode xmlNode ) throws JAXBException; |
| |
| /** |
| * Takes an XML node and updates its associated Jakarta XML Binding object and its descendants. |
| * |
| * <p> |
| * This operation can be thought of as an "in-place" unmarshalling. |
| * The difference is that instead of creating a whole new Jakarta XML Binding tree, |
| * this operation updates an existing tree, reusing as much Jakarta XML Binding objects |
| * as possible. |
| * |
| * <p> |
| * As a side-effect, this operation updates the association between |
| * XML nodes and Jakarta XML Binding objects. |
| * |
| * @param xmlNode the XML node |
| * |
| * @return |
| * Returns the updated Jakarta XML Binding object. Typically, this is the same |
| * object that was returned from earlier |
| * {@link #marshal(Object,Object)} or |
| * {@link #updateJAXB(Object)} method invocation, |
| * but it maybe |
| * a different object, for example when the name of the XML |
| * element has changed. |
| * |
| * @throws JAXBException |
| * If any unexpected problem occurs updating corresponding Jakarta XML Binding mapped content. |
| * @throws IllegalArgumentException |
| * If node parameter is null |
| */ |
| public abstract Object updateJAXB( XmlNode xmlNode ) throws JAXBException; |
| |
| |
| /** |
| * Specifies whether marshal, unmarshal and update methods |
| * performs validation on their XML content. |
| * |
| * @param schema set to null to disable validation. |
| * |
| * @see Unmarshaller#setSchema(Schema) |
| */ |
| public abstract void setSchema( Schema schema ); |
| |
| /** |
| * Gets the last {@link Schema} object (including null) set by the |
| * {@link #setSchema(Schema)} method. |
| * |
| * @return the Schema object for validation or null if not present |
| */ |
| public abstract Schema getSchema(); |
| |
| /** |
| * Allow an application to register a {@code ValidationEventHandler}. |
| * <p> |
| * The {@code ValidationEventHandler} will be called by the Jakarta XML Binding Provider |
| * if any validation errors are encountered during calls to any of the |
| * Binder unmarshal, marshal and update methods. |
| * |
| * <p> |
| * Calling this method with a null parameter will cause the Binder |
| * to revert back to the default default event handler. |
| * |
| * @param handler the validation event handler |
| * @throws JAXBException if an error was encountered while setting the |
| * event handler |
| */ |
| public abstract 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 abstract ValidationEventHandler getEventHandler() throws JAXBException; |
| |
| /** |
| * |
| * Set the particular property in the underlying implementation of |
| * {@code Binder}. This method can only be used to set one of |
| * the standard Jakarta XML Binding defined unmarshal/marshal properties |
| * or a provider specific property for binder, unmarshal or marshal. |
| * Attempting to set an undefined property will result in |
| * a PropertyException being thrown. See |
| * <a href="Unmarshaller.html#supportedProps">Supported Unmarshal Properties</a> |
| * and |
| * <a href="Marshaller.html#supportedProps">Supported Marshal Properties</a>. |
| * |
| * @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 |
| */ |
| abstract public void setProperty( String name, Object value ) throws PropertyException; |
| |
| |
| /** |
| * Get the particular property in the underlying implementation of |
| * {@code Binder}. This method can only |
| * be used to get one of |
| * the standard Jakarta XML Binding defined unmarshal/marshal properties |
| * or a provider specific property for binder, unmarshal or marshal. |
| * Attempting to get an undefined property will result in |
| * a PropertyException being thrown. See |
| * <a href="Unmarshaller.html#supportedProps">Supported Unmarshal Properties</a> |
| * and |
| * <a href="Marshaller.html#supportedProps">Supported Marshal Properties</a>. |
| * |
| * @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 |
| */ |
| abstract public Object getProperty( String name ) throws PropertyException; |
| |
| } |
