| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * Copyright 2001-2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| 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; |
| import java.util.ArrayList; |
| |
| /** |
| * 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. |
| * |
| * @xerces.internal |
| * |
| * @author Elena Litani, Lisa Martin |
| * @author IBM |
| * @version $Id: XSEmptyCM.java,v 1.7 2009/07/28 15:18:11 spericas 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 the qualified name of the element |
| * @param currentState Current state |
| * @param subGroupHandler the substitution group handler |
| * @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 currentState 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 subGroupHandler the substitution group handler |
| * @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; |
| } |
| |
| public ArrayList checkMinMaxBounds() { |
| return null; |
| } |
| |
| } // class XSEmptyCM |