xsdattributetraverser.java

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/*
 * 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.
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 * 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.
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 * 4. The names "Xerces" and "Apache Software Foundation" must
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 * 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/>.
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package com.sun.org.apache.xerces.internal.impl.xs.traversers;

import com.sun.org.apache.xerces.internal.impl.dv.InvalidDatatypeValueException;
import com.sun.org.apache.xerces.internal.impl.dv.ValidatedInfo;
import com.sun.org.apache.xerces.internal.impl.dv.XSSimpleType;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaGrammar;
import com.sun.org.apache.xerces.internal.impl.xs.SchemaSymbols;
import com.sun.org.apache.xerces.internal.impl.xs.XSAttributeDecl;
import com.sun.org.apache.xerces.internal.impl.xs.XSAnnotationImpl;
import com.sun.org.apache.xerces.internal.impl.xs.XSAttributeUseImpl;
import com.sun.org.apache.xerces.internal.impl.xs.XSComplexTypeDecl;
import com.sun.org.apache.xerces.internal.xs.XSConstants;
import com.sun.org.apache.xerces.internal.xs.XSTypeDefinition;
import com.sun.org.apache.xerces.internal.impl.xs.util.XInt;
import com.sun.org.apache.xerces.internal.util.DOMUtil;
import com.sun.org.apache.xerces.internal.util.XMLSymbols;
import com.sun.org.apache.xerces.internal.xni.QName;
import org.w3c.dom.Element;

/**
 * The attribute declaration schema component traverser.
 *
 * <attribute
 *   default = string
 *   fixed = string
 *   form = (qualified | unqualified)
 *   id = ID
 *   name = NCName
 *   ref = QName
 *   type = QName
 *   use = (optional | prohibited | required) : optional
 *   {any attributes with non-schema namespace . . .}>
 *   Content: (annotation?, (simpleType?))
 * </attribute>
 *
 * @author Sandy Gao, IBM
 * @author Neeraj Bajaj, Sun Microsystems, inc.
 * @version $Id: XSDAttributeTraverser.java,v 1.27 2003/11/11 20:15:00 sandygao Exp $
 */
class XSDAttributeTraverser extends XSDAbstractTraverser {

    public XSDAttributeTraverser (XSDHandler handler,
                                  XSAttributeChecker gAttrCheck) {
        super(handler, gAttrCheck);
    }

    protected XSAttributeUseImpl traverseLocal(Element attrDecl,
                                               XSDocumentInfo schemaDoc,
                                               SchemaGrammar grammar,
                                               XSComplexTypeDecl enclosingCT) {

        // General Attribute Checking
        Object[] attrValues = fAttrChecker.checkAttributes(attrDecl, false, schemaDoc);

        String defaultAtt = (String) attrValues[XSAttributeChecker.ATTIDX_DEFAULT];
        String fixedAtt   = (String) attrValues[XSAttributeChecker.ATTIDX_FIXED];
        String nameAtt    = (String) attrValues[XSAttributeChecker.ATTIDX_NAME];
        QName  refAtt     = (QName)  attrValues[XSAttributeChecker.ATTIDX_REF];
        XInt   useAtt     = (XInt)   attrValues[XSAttributeChecker.ATTIDX_USE];

        // get 'attribute declaration'
        XSAttributeDecl attribute = null;
        if (attrDecl.getAttributeNode(SchemaSymbols.ATT_REF) != null) {
            if (refAtt != null) {
                attribute = (XSAttributeDecl)fSchemaHandler.getGlobalDecl(schemaDoc, XSDHandler.ATTRIBUTE_TYPE, refAtt, attrDecl);

                Element child = DOMUtil.getFirstChildElement(attrDecl);
                if (child != null && DOMUtil.getLocalName(child).equals(SchemaSymbols.ELT_ANNOTATION)) {
                    // REVISIT:  put this somewhere
                    traverseAnnotationDecl(child, attrValues, false, schemaDoc);
                    child = DOMUtil.getNextSiblingElement(child);
                }

                if (child != null) {
                    reportSchemaError("src-attribute.3.2", new Object[]{refAtt.rawname}, child);
                }
                // for error reporting
                nameAtt = refAtt.localpart;
            } else {
                attribute = null;
            }
        } else {
            attribute = traverseNamedAttr(attrDecl, attrValues, schemaDoc, grammar, false, enclosingCT);
        }

        // get 'value constraint'
        short consType = XSConstants.VC_NONE;
        if (defaultAtt != null) {
            consType = XSConstants.VC_DEFAULT;
        } else if (fixedAtt != null) {
            consType = XSConstants.VC_FIXED;
            defaultAtt = fixedAtt;
            fixedAtt = null;
        }

        XSAttributeUseImpl attrUse = null;
        if (attribute != null) {
            if (fSchemaHandler.fDeclPool !=null) {
                attrUse = fSchemaHandler.fDeclPool.getAttributeUse();
            } else {
                attrUse = new XSAttributeUseImpl();
            }
            attrUse.fAttrDecl = attribute;
            attrUse.fUse = useAtt.shortValue();
            attrUse.fConstraintType = consType;
            if (defaultAtt != null) {
                attrUse.fDefault = new ValidatedInfo();
                attrUse.fDefault.normalizedValue = defaultAtt;
            }
        }
        fAttrChecker.returnAttrArray(attrValues, schemaDoc);

        //src-attribute

        // 1 default and fixed must not both be present.
        if (defaultAtt != null && fixedAtt != null) {
            reportSchemaError("src-attribute.1", new Object[]{nameAtt}, attrDecl);
        }

        // 2 If default and use are both present, use must have the actual value optional.
        if (consType == XSConstants.VC_DEFAULT &&
            useAtt != null && useAtt.intValue() != SchemaSymbols.USE_OPTIONAL) {
            reportSchemaError("src-attribute.2", new Object[]{nameAtt}, attrDecl);
        }

        // a-props-correct

        if (defaultAtt != null && attrUse != null) {
            // 2 if there is a {value constraint}, the canonical lexical representation of its value must be valid with respect to the {type definition} as defined in String Valid (3.14.4).
            fValidationState.setNamespaceSupport(schemaDoc.fNamespaceSupport);
            try {
                checkDefaultValid(attrUse);
            }
            catch (InvalidDatatypeValueException ide) {
                reportSchemaError (ide.getKey(), ide.getArgs(), attrDecl);
                reportSchemaError ("a-props-correct.2", new Object[]{nameAtt, defaultAtt}, attrDecl);
            }

            // 3 If the {type definition} is or is derived from ID then there must not be a {value constraint}.
            if (((XSSimpleType)attribute.getTypeDefinition()).isIDType() ) {
                reportSchemaError ("a-props-correct.3", new Object[]{nameAtt}, attrDecl);
            }

            // check 3.5.6 constraint
            // Attribute Use Correct
            // 2 If the {attribute declaration} has a fixed {value constraint}, then if the attribute use itself has a {value constraint}, it must also be fixed and its value must match that of the {attribute declaration}'s {value constraint}.
            if (attrUse.fAttrDecl.getConstraintType() == XSConstants.VC_FIXED &&
                attrUse.fConstraintType != XSConstants.VC_NONE) {
                if (attrUse.fConstraintType != XSConstants.VC_FIXED ||
                    !attrUse.fAttrDecl.getValInfo().actualValue.equals(attrUse.fDefault.actualValue)) {
                    reportSchemaError ("au-props-correct.2", new Object[]{nameAtt, attrUse.fAttrDecl.getValInfo().stringValue()}, attrDecl);
                }
            }
        }

        return attrUse;
    }

    protected XSAttributeDecl traverseGlobal(Element attrDecl,
                                             XSDocumentInfo schemaDoc,
                                             SchemaGrammar grammar) {

        // General Attribute Checking
        Object[] attrValues = fAttrChecker.checkAttributes(attrDecl, true, schemaDoc);
        XSAttributeDecl attribute = traverseNamedAttr(attrDecl, attrValues, schemaDoc, grammar, true, null);
        fAttrChecker.returnAttrArray(attrValues, schemaDoc);