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/* * The contents of this file are subject to the terms * of the Common Development and Distribution License * (the "License"). You may not use this file except * in compliance with the License. * * You can obtain a copy of the license at * https://jaxp.dev.java.net/CDDLv1.0.html. * See the License for the specific language governing * permissions and limitations under the License. * * When distributing Covered Code, include this CDDL * HEADER in each file and include the License file at * https://jaxp.dev.java.net/CDDLv1.0.html * If applicable add the following below this CDDL HEADER * with the fields enclosed by brackets "[]" replaced with * your own identifying information: Portions Copyright * [year] [name of copyright owner] */ /* * $Id: XMLEntityReader.java,v 1.3 2005/11/03 17:02:21 jeffsuttor Exp $ * @(#)TypeInfoProvider.java 1.14 05/11/17 * * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved. */ package javax.xml.validation; import org.w3c.dom.TypeInfo; /** * This class provides access to the type information determined * by {@link ValidatorHandler}. * * <p> * Some schema languages, such as W3C XML Schema, encourages a validator * to report the "type" it assigns to each attribute/element. * Those applications who wish to access this type information can invoke * methods defined on this "interface" to access such type information. * * <p> * Implementation of this "interface" can be obtained through the * {@link ValidatorHandler#getTypeInfoProvider()} method. * * @author <a href="mailto:Kohsuke.Kawaguchi@Sun.com">Kohsuke Kawaguchi</a> * @version $Revision: 1.3 $, $Date: 2005/10/12 17:14:21 $ * @see org.w3c.dom.TypeInfo * @since 1.5 */ public abstract class TypeInfoProvider { /** * Constructor for the derived class. * * <p> * The constructor does nothing. */ protected TypeInfoProvider() { } /** * <p>Returns the immutable {@link TypeInfo} object for the current * element.</p> * * <p>The method may only be called by the startElement event * or the endElement event * of the {@link org.xml.sax.ContentHandler} that the application sets to * the {@link ValidatorHandler}.</p> * * <p>When W3C XML Schema validation is being performed, in the * case where an element has a union type, the {@link TypeInfo} * returned by a call to <code>getElementTypeInfo()</code> from the * startElement * event will be the union type. The <code>TypeInfo</code> * returned by a call * from the endElement event will be the actual member type used * to validate the element.</p> * * @throws IllegalStateException * If this method is called from other {@link org.xml.sax.ContentHandler} * methods. * @return * An immutable {@link TypeInfo} object that represents the * type of the current element. * Note that the caller can keep references to the obtained * {@link TypeInfo} longer than the callback scope. * * Otherwise, this method returns * null if the validator is unable to * determine the type of the current element for some reason * (for example, if the validator is recovering from * an earlier error.) * */ public abstract TypeInfo getElementTypeInfo(); /** * Returns the immutable {@link TypeInfo} object for the specified * attribute of the current element. * * <p> * The method may only be called by the startElement event of * the {@link org.xml.sax.ContentHandler} that the application sets to the * {@link ValidatorHandler}.</p> * * @param index * The index of the attribute. The same index for * the {@link org.xml.sax.Attributes} object passed to the * <code>startElement</code> callback. * * @throws IndexOutOfBoundsException * If the index is invalid. * @throws IllegalStateException * If this method is called from other {@link org.xml.sax.ContentHandler} * methods. * * @return * An immutable {@link TypeInfo} object that represents the * type of the specified attribute. * Note that the caller can keep references to the obtained * {@link TypeInfo} longer than the callback scope. * * Otherwise, this method returns * null if the validator is unable to * determine the type. */ public abstract TypeInfo getAttributeTypeInfo(int index); /** * Returns <code>true</code> if the specified attribute is determined * to be ID. * * <p> * Exacly how an attribute is "determined to be ID" is up to the * schema language. In case of W3C XML Schema, this means * that the actual type of the attribute is the built-in ID type * or its derived type. * * <p> * A {@link javax.xml.parsers.DocumentBuilder} uses this information * to properly implement {@link org.w3c.dom.Attr#isId()}. * * <p> * The method may only be called by the startElement event of * the {@link org.xml.sax.ContentHandler} that the application sets to the * {@link ValidatorHandler}. * * @param index * The index of the attribute. The same index for * the {@link org.xml.sax.Attributes} object passed to the * <code>startElement</code> callback. * * @throws IndexOutOfBoundsException * If the index is invalid. * @throws IllegalStateException * If this method is called from other {@link org.xml.sax.ContentHandler} * methods. * * @return true * if the type of the specified attribute is ID. */ public abstract boolean isIdAttribute(int index); /** * Returns <code>false</code> if the attribute was added by the validator. * * <p> * This method provides information necessary for * a {@link javax.xml.parsers.DocumentBuilder} to determine what * the DOM tree should return from the {@link org.w3c.dom.Attr#getSpecified()} method. * * <p> * The method may only be called by the startElement event of * the {@link org.xml.sax.ContentHandler} that the application sets to the * {@link ValidatorHandler}. * * <p> * A general guideline for validators is to return true if * the attribute was originally present in the pipeline, and * false if it was added by the validator. * * @param index * The index of the attribute. The same index for * the {@link org.xml.sax.Attributes} object passed to the * <code>startElement</code> callback. * * @throws IndexOutOfBoundsException * If the index is invalid. * @throws IllegalStateException * If this method is called from other {@link org.xml.sax.ContentHandler} * methods. * * @return * <code>true</code> if the attribute was present before the validator * processes input. <code>false</code> if the attribute was added * by the validator. */ public abstract boolean isSpecified(int index); }