- /*
- * The Apache Software License, Version 1.1
- *
- *
- * Copyright (c) 2001-2003 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation and was
- * originally based on software copyright (c) 2001, International
- * Business Machines, Inc., http://www.apache.org. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
-
- package com.sun.org.apache.xerces.internal.impl.xs.models;
-
- import com.sun.org.apache.xerces.internal.xni.QName;
- import com.sun.org.apache.xerces.internal.impl.xs.SubstitutionGroupHandler;
- import com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaException;
-
- import java.util.Vector;
-
- /**
- * XSEmptyCM is a derivative of the abstract content model base class that
- * handles a content model with no chilren (elements).
- *
- * This model validated on the way in.
- *
- * @author Elena Litani, Lisa Martin
- * @author IBM
- * @version $Id: XSEmptyCM.java,v 1.6 2003/03/11 15:48:33 sandygao Exp $
- */
- public class XSEmptyCM implements XSCMValidator {
-
- //
- // Constants
- //
-
- // start the content model: did not see any children
- private static final short STATE_START = 0;
-
- private static final Vector EMPTY = new Vector(0);
-
- //
- // Data
- //
-
- //
- // XSCMValidator methods
- //
-
- /**
- * This methods to be called on entering a first element whose type
- * has this content model. It will return the initial state of the content model
- *
- * @return Start state of the content model
- */
- public int[] startContentModel(){
- return (new int[] {STATE_START});
- }
-
-
- /**
- * The method corresponds to one transaction in the content model.
- *
- * @param elementName
- * @param state Current state
- * @return element index corresponding to the element from the Schema grammar
- */
- public Object oneTransition (QName elementName, int[] currentState, SubstitutionGroupHandler subGroupHandler){
-
- // error state
- if (currentState[0] < 0) {
- currentState[0] = XSCMValidator.SUBSEQUENT_ERROR;
- return null;
- }
-
- currentState[0] = XSCMValidator.FIRST_ERROR;
- return null;
- }
-
-
- /**
- * The method indicates the end of list of children
- *
- * @param state Current state of the content model
- * @return true if the last state was a valid final state
- */
- public boolean endContentModel (int[] currentState){
- boolean isFinal = false;
- int state = currentState[0];
-
- // restore content model state:
-
- // error
- if (state < 0) {
- return false;
- }
-
-
- return true;
- }
-
- /**
- * check whether this content violates UPA constraint.
- *
- * @param errors to hold the UPA errors
- * @return true if this content model contains other or list wildcard
- */
- public boolean checkUniqueParticleAttribution(SubstitutionGroupHandler subGroupHandler) throws XMLSchemaException {
- return false;
- }
-
- /**
- * Check which elements are valid to appear at this point. This method also
- * works if the state is in error, in which case it returns what should
- * have been seen.
- *
- * @param state the current state
- * @return a Vector whose entries are instances of
- * either XSWildcardDecl or XSElementDecl.
- */
- public Vector whatCanGoHere(int[] state) {
- return EMPTY;
- }
-
- } // class XSEmptyCM