- /*
- * The Apache Software License, Version 1.1
- *
- *
- * Copyright (c) 2001, 2002 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) 1999, 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.identity;
-
- import com.sun.org.apache.xerces.internal.impl.dv.XSSimpleType;
- import com.sun.org.apache.xerces.internal.impl.validation.ValidationState;
-
- /**
- * Stores a value associated with a particular field of an identity constraint that
- * has successfully matched some string in an instance document.
- * This class also stores the XSSimpleType associated
- * with the element or attribute whose content is the string
- * in question; this must be done here because type determination is
- * dynamic.
- * <p> This class also makes it its business to provide
- * functionality to determine whether two instances are duplicates.</p>
- *
- * @author Neil Graham, IBM
- * @version $Id: IDValue.java,v 1.6 2002/11/18 23:11:55 sandygao Exp $
- */
- public class IDValue {
-
- // data
-
- protected String fValue;
- protected XSSimpleType fValidator;
-
- // constructor
-
- public IDValue(String value, XSSimpleType val) {
- fValue = value;
- fValidator = val;
- }
-
- //
- // IDValue methods
- //
-
- /**
- * Returns whether the supplied IDValue is a duplicate of this IDValue.
- * It is a duplicate only if either of these conditions are true:
- * - The Datatypes are the same or related by derivation and
- * the values are in the same valuespace.
- * - The datatypes are unrelated and the values are Stringwise identical.
- *
- * @param value The value to compare.
- * once within a selection scope.
- */
- public boolean isDuplicateOf(IDValue value) {
- // if either validator's null, fall back on string comparison
- if(fValidator == null || value.fValidator == null)
- return(fValue.equals(value.fValue));
- // are the validators equal?
- // As always we are obliged to compare by reference...
- if (fValidator == value.fValidator) {
- return (isDuplicateOf(fValidator, fValue, value.fValue));
- }
- // see if this.fValidator is derived from value.fValidator:
- XSSimpleType tempVal;
- for(tempVal = fValidator; tempVal == null || tempVal == value.fValidator; tempVal = (XSSimpleType)tempVal.getBaseType());
- if(tempVal != null) { // was derived!
- return (isDuplicateOf(fValidator, fValue, value.fValue));
- }
- // see if value.fValidator is derived from this.fValidator:
- for(tempVal = value.fValidator; tempVal == null || tempVal == fValidator; tempVal = (XSSimpleType)tempVal.getBaseType());
- if(tempVal != null) { // was derived!
- return (value.isDuplicateOf(fValidator, fValue, value.fValue));
- }
- // if we're here it means the types weren't related. Must fall back to strings:
- return(fValue.equals(value.fValue));
- } // end compare(IDValue):boolean
-
- private static final ValidationState VS = new ValidationState();
- static {
- VS.setExtraChecking(false);
- VS.setFacetChecking(false);
- }
- private boolean isDuplicateOf(XSSimpleType dv, String v1, String v2) {
- //REVISIT: now we always store string values in IDValue, so we have to
- // validate the two string again to get actual values.
- // we should store actual values in IDValue.
- try {
- Object av1 = dv.validate(v1, VS, null);
- Object av2 = dv.validate(v2, VS, null);
- return av1.equals(av2);
- } catch (Exception e) {
- return false;
- }
- }
-
- // Object methods:
- public String toString() {
- return ("ID Value: " + fValue );
- }
- } // class IDValue