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XSAttributeChecker.javaAPI DocJava SE 6 API93896Tue Jun 10 00:22:46 BST 2008com.sun.org.apache.xerces.internal.impl.xs.traversers

XSAttributeChecker

public class XSAttributeChecker extends Object
Class XSAttributeCheck is used to check the validity of attributes appearing in the schema document. It - reports an error for invalid element (invalid namespace, invalid name) - reports an error for invalid attribute (invalid namespace, invalid name) - reports an error for invalid attribute value - return compiled values for attriute values - provide default value for missing optional attributes - provide default value for incorrect attribute values But it's the caller's responsibility to check whether a required attribute is present. Things need revisiting: - Whether to return non-schema attributes/values - Do we need to update NamespaceScope and ErrorReporter when reset()? - Should have the datatype validators return compiled value - use symbol table instead of many hashtables
xerces.internal
author
Sandy Gao, IBM
version
$Id: XSAttributeChecker.java,v 1.6.2.2 2007/10/20 17:56:44 joehw Exp $

Fields Summary
private static final String
ELEMENT_N
private static final String
ELEMENT_R
private static final String
ATTRIBUTE_N
private static final String
ATTRIBUTE_R
private static int
ATTIDX_COUNT
public static final int
ATTIDX_ABSTRACT
public static final int
ATTIDX_AFORMDEFAULT
public static final int
ATTIDX_BASE
public static final int
ATTIDX_BLOCK
public static final int
ATTIDX_BLOCKDEFAULT
public static final int
ATTIDX_DEFAULT
public static final int
ATTIDX_EFORMDEFAULT
public static final int
ATTIDX_FINAL
public static final int
ATTIDX_FINALDEFAULT
public static final int
ATTIDX_FIXED
public static final int
ATTIDX_FORM
public static final int
ATTIDX_ID
public static final int
ATTIDX_ITEMTYPE
public static final int
ATTIDX_MAXOCCURS
public static final int
ATTIDX_MEMBERTYPES
public static final int
ATTIDX_MINOCCURS
public static final int
ATTIDX_MIXED
public static final int
ATTIDX_NAME
public static final int
ATTIDX_NAMESPACE
public static final int
ATTIDX_NAMESPACE_LIST
public static final int
ATTIDX_NILLABLE
public static final int
ATTIDX_NONSCHEMA
public static final int
ATTIDX_PROCESSCONTENTS
public static final int
ATTIDX_PUBLIC
public static final int
ATTIDX_REF
public static final int
ATTIDX_REFER
public static final int
ATTIDX_SCHEMALOCATION
public static final int
ATTIDX_SOURCE
public static final int
ATTIDX_SUBSGROUP
public static final int
ATTIDX_SYSTEM
public static final int
ATTIDX_TARGETNAMESPACE
public static final int
ATTIDX_TYPE
public static final int
ATTIDX_USE
public static final int
ATTIDX_VALUE
public static final int
ATTIDX_ENUMNSDECLS
public static final int
ATTIDX_VERSION
public static final int
ATTIDX_XML_LANG
public static final int
ATTIDX_XPATH
public static final int
ATTIDX_FROMDEFAULT
public static final int
ATTIDX_ISRETURNED
private static final XIntPool
fXIntPool
private static final XInt
INT_QUALIFIED
private static final XInt
INT_UNQUALIFIED
private static final XInt
INT_EMPTY_SET
private static final XInt
INT_ANY_STRICT
private static final XInt
INT_ANY_LAX
private static final XInt
INT_ANY_SKIP
private static final XInt
INT_ANY_ANY
private static final XInt
INT_ANY_LIST
private static final XInt
INT_ANY_NOT
private static final XInt
INT_USE_OPTIONAL
private static final XInt
INT_USE_REQUIRED
private static final XInt
INT_USE_PROHIBITED
private static final XInt
INT_WS_PRESERVE
private static final XInt
INT_WS_REPLACE
private static final XInt
INT_WS_COLLAPSE
private static final XInt
INT_UNBOUNDED
private static final Hashtable
fEleAttrsMapG
private static final Hashtable
fEleAttrsMapL
protected static final int
DT_ANYURI
protected static final int
DT_ID
protected static final int
DT_QNAME
protected static final int
DT_STRING
protected static final int
DT_TOKEN
protected static final int
DT_NCNAME
protected static final int
DT_XPATH
protected static final int
DT_XPATH1
protected static final int
DT_LANGUAGE
protected static final int
DT_COUNT
private static final XSSimpleType[]
fExtraDVs
protected static final int
DT_BLOCK
protected static final int
DT_BLOCK1
protected static final int
DT_FINAL
protected static final int
DT_FINAL1
protected static final int
DT_FINAL2
protected static final int
DT_FORM
protected static final int
DT_MAXOCCURS
protected static final int
DT_MAXOCCURS1
protected static final int
DT_MEMBERTYPES
protected static final int
DT_MINOCCURS1
protected static final int
DT_NAMESPACE
protected static final int
DT_PROCESSCONTENTS
protected static final int
DT_USE
protected static final int
DT_WHITESPACE
protected static final int
DT_BOOLEAN
protected static final int
DT_NONNEGINT
protected static final int
DT_POSINT
protected XSDHandler
fSchemaHandler
protected SymbolTable
fSymbolTable
protected Hashtable
fNonSchemaAttrs
protected Vector
fNamespaceList
protected boolean[]
fSeen
private static boolean[]
fSeenTemp
static final int
INIT_POOL_SIZE
static final int
INC_POOL_SIZE
Object[]
fArrayPool
private static Object[]
fTempArray
int
fPoolPos
Constructors Summary
public XSAttributeChecker(XSDHandler schemaHandler)


    // constructor. Sets fErrorReproter and get datatype validators
       
        fSchemaHandler = schemaHandler;
Methods Summary
public java.lang.Object[]checkAttributes(org.w3c.dom.Element element, boolean isGlobal, com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDocumentInfo schemaDoc)
Check whether the specified element conforms to the attributes restriction an array of attribute values is returned. the caller must call returnAttrArray to return that array.

param
element which element to check
param
isGlobal whether a child of <schema> or <redefine>
param
schemaDoc the document where the element lives in
return
an array containing attribute values

        return checkAttributes(element, isGlobal, schemaDoc, false);
public java.lang.Object[]checkAttributes(org.w3c.dom.Element element, boolean isGlobal, com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDocumentInfo schemaDoc, boolean enumAsQName)
Check whether the specified element conforms to the attributes restriction an array of attribute values is returned. the caller must call returnAttrArray to return that array. This method also takes an extra parameter: if the element is "enumeration", whether to make a copy of the namespace context, so that the value can be resolved as a QName later.

param
element which element to check
param
isGlobal whether a child of <schema> or <redefine>
param
schemaDoc the document where the element lives in
param
enumAsQName whether to tread enumeration value as QName
return
an array containing attribute values

        if (element == null)
            return null;

        // get all attributes
        Attr[] attrs = DOMUtil.getAttrs(element);

        // update NamespaceSupport
        resolveNamespace(element, attrs, schemaDoc.fNamespaceSupport);

        String uri = DOMUtil.getNamespaceURI(element);
        String elName = DOMUtil.getLocalName(element);

        if (!SchemaSymbols.URI_SCHEMAFORSCHEMA.equals(uri)) {
            reportSchemaError("s4s-elt-schema-ns", new Object[] {elName}, element);
        }

        Hashtable eleAttrsMap = fEleAttrsMapG;
        String lookupName = elName;

        // REVISIT: only local element and attribute are different from others.
        //          it's possible to have either name or ref. all the others
        //          are only allowed to have one of name or ref, or neither of them.
        //          we'd better move such checking to the traverser.
        if (!isGlobal) {
            eleAttrsMap = fEleAttrsMapL;
            if (elName.equals(SchemaSymbols.ELT_ELEMENT)) {
                if (DOMUtil.getAttr(element, SchemaSymbols.ATT_REF) != null)
                    lookupName = ELEMENT_R;
                else
                    lookupName = ELEMENT_N;
            } else if (elName.equals(SchemaSymbols.ELT_ATTRIBUTE)) {
                if (DOMUtil.getAttr(element, SchemaSymbols.ATT_REF) != null)
                    lookupName = ATTRIBUTE_R;
                else
                    lookupName = ATTRIBUTE_N;
            }
        }

        // get desired attribute list of this element
        OneElement oneEle = (OneElement)eleAttrsMap.get(lookupName);
        if (oneEle == null) {
            // should never gets here.
            // when this method is called, the call already knows that
            // the element can appear.
            reportSchemaError ("s4s-elt-invalid", new Object[] {elName}, element);
            return null;
        }

        //Hashtable attrValues = new Hashtable();
        Object[] attrValues = getAvailableArray();
        //Hashtable otherValues = new Hashtable();
        long fromDefault = 0;
        Container attrList = oneEle.attrList;

        // clear the "seen" flag.
        System.arraycopy(fSeenTemp, 0, fSeen, 0, ATTIDX_COUNT);

        // traverse all attributes
        int length = attrs.length;
        Attr sattr = null;
        for (int i = 0; i < length; i++) {
            sattr = attrs[i];
            // get the attribute name/value
            //String attrName = DOMUtil.getLocalName(sattr);
            String attrName = sattr.getName();
            String attrURI = DOMUtil.getNamespaceURI(sattr);
            String attrVal = DOMUtil.getValue(sattr);
            
            if (attrName.startsWith("xml")) {
                String attrPrefix = DOMUtil.getPrefix(sattr);
                // we don't want to add namespace declarations to the non-schema attributes
                if ("xmlns".equals(attrPrefix) || "xmlns".equals(attrName)) {
                    continue;
                }
                // Both <schema> and <documentation> may have an xml:lang attribute.
                // Set the URI for this attribute to null so that we process it
                // like any other schema attribute.
                else if (SchemaSymbols.ATT_XML_LANG.equals(attrName) &&
                        (SchemaSymbols.ELT_SCHEMA.equals(elName) ||
                                SchemaSymbols.ELT_DOCUMENTATION.equals(elName))) {
                    attrURI = null;
                }
            }

            // for attributes with namespace prefix
            //
            if (attrURI != null && attrURI.length() != 0) {
                // attributes with schema namespace are not allowed
                // and not allowed on "document" and "appInfo"
                if (attrURI.equals(SchemaSymbols.URI_SCHEMAFORSCHEMA) ||
                    !oneEle.allowNonSchemaAttr) {
                    reportSchemaError ("s4s-att-not-allowed", new Object[] {elName, attrName}, element);
                }
                else {
                    if(attrValues[ATTIDX_NONSCHEMA] == null) {
                        // these are usually small
                        attrValues[ATTIDX_NONSCHEMA] = new Vector(4,2);
                    }
                    ((Vector)attrValues[ATTIDX_NONSCHEMA]).addElement(attrName);
                    ((Vector)attrValues[ATTIDX_NONSCHEMA]).addElement(attrVal);
                    // for attributes from other namespace
                    // store them in a list, and TRY to validate them after
                    // schema traversal (because it's "lax")
                    //otherValues.put(attrName, attrVal);
                    // REVISIT:  actually use this some day...
                    // String attrRName = attrURI + "," + attrName;
                    // Vector values = (Vector)fNonSchemaAttrs.get(attrRName);
                    // if (values == null) {
                        // values = new Vector();
                        // values.addElement(attrName);
                        // values.addElement(elName);
                        // values.addElement(attrVal);
                        // fNonSchemaAttrs.put(attrRName, values);
                    // }
                    // else {
                        // values.addElement(elName);
                        // values.addElement(attrVal);
                    // }
                }
                continue;
            }

            // check whether this attribute is allowed
            OneAttr oneAttr = (OneAttr)attrList.get(attrName);
            if (oneAttr == null) {
                reportSchemaError ("s4s-att-not-allowed",
                                   new Object[] {elName, attrName},
                                   element);
                continue;
            }

            // we've seen this attribute
            fSeen[oneAttr.valueIndex] = true;

            // check the value against the datatype
            try {
                // no checking on string needs to be done here.
                // no checking on xpath needs to be done here.
                // xpath values are validated in xpath parser
                if (oneAttr.dvIndex >= 0) {
                    if (oneAttr.dvIndex != DT_STRING &&
                        oneAttr.dvIndex != DT_XPATH &&
                        oneAttr.dvIndex != DT_XPATH1) {
                        XSSimpleType dv = fExtraDVs[oneAttr.dvIndex];
                        Object avalue = dv.validate(attrVal, schemaDoc.fValidationContext, null);
                        // kludge to handle chameleon includes/redefines...
                        if (oneAttr.dvIndex == DT_QNAME) {
                            QName qname = (QName)avalue;
                            if(qname.prefix == XMLSymbols.EMPTY_STRING && qname.uri == null && schemaDoc.fIsChameleonSchema)
                                qname.uri = schemaDoc.fTargetNamespace;
                        }
                        attrValues[oneAttr.valueIndex] = avalue;
                    } else {
                        attrValues[oneAttr.valueIndex] = attrVal;
                    }
                }
                else {
                    attrValues[oneAttr.valueIndex] = validate(attrValues, attrName, attrVal, oneAttr.dvIndex, schemaDoc);
                }
            } catch (InvalidDatatypeValueException ide) {
                reportSchemaError ("s4s-att-invalid-value",
                                   new Object[] {elName, attrName, ide.getMessage()},
                                   element);
                if (oneAttr.dfltValue != null)
                    //attrValues.put(attrName, oneAttr.dfltValue);
                    attrValues[oneAttr.valueIndex] = oneAttr.dfltValue;
            }

            // For "enumeration", and type is possible to be a QName, we need
            // to return namespace context for later QName resolution.
            if (elName.equals(SchemaSymbols.ELT_ENUMERATION) && enumAsQName) {
                attrValues[ATTIDX_ENUMNSDECLS] = new SchemaNamespaceSupport(schemaDoc.fNamespaceSupport);
            }
        }

        // apply default values
        OneAttr[] reqAttrs = oneEle.attrList.values;
        for (int i = 0; i < reqAttrs.length; i++) {
            OneAttr oneAttr = reqAttrs[i];

            // if the attribute didn't apprear, and
            // if the attribute is optional with default value, apply it
            if (oneAttr.dfltValue != null && !fSeen[oneAttr.valueIndex]) {
                //attrValues.put(oneAttr.name, oneAttr.dfltValue);
                attrValues[oneAttr.valueIndex] = oneAttr.dfltValue;
                fromDefault |= (1<<oneAttr.valueIndex);
            }
        }

        attrValues[ATTIDX_FROMDEFAULT] = new Long(fromDefault);
        //attrValues[ATTIDX_OTHERVALUES] = otherValues;

        // Check that minOccurs isn't greater than maxOccurs.
        // p-props-correct 2.1
        if (attrValues[ATTIDX_MAXOCCURS] != null) {
            int min = ((XInt)attrValues[ATTIDX_MINOCCURS]).intValue();
            int max = ((XInt)attrValues[ATTIDX_MAXOCCURS]).intValue();
            if (max != SchemaSymbols.OCCURRENCE_UNBOUNDED) {
                
                // maxOccurLimit is only check in secure mode
                if (fSchemaHandler.fSecureProcessing != null) {
                    String localName = element.getLocalName();

                // The maxOccurs restriction no longer applies to elements
                    // and wildcards in a sequence in which they are the only
                    // particle. These are now validated using a constant
                    // space algorithm. The restriction still applies to all
                    // other cases.
                
                    // Determine if constant-space algorithm can be applied
                    final boolean optimize = 
                            (localName.equals("element") || localName.equals("any")) && 
                            (element.getNextSibling() == null) &&
                            (element.getPreviousSibling() == null) &&
                            (element.getParentNode().getLocalName().equals("sequence"));

                    if (!optimize) {
                    //Revisit :: IMO this is not right place to check
                    // maxOccurNodeLimit.
                    int maxOccurNodeLimit = fSchemaHandler.fSecureProcessing.getMaxOccurNodeLimit();
                    if (max > maxOccurNodeLimit) {
                        reportSchemaFatalError("maxOccurLimit", new Object[] {new Integer(maxOccurNodeLimit)}, element);
                    
                        // reset max values in case processing continues on error
                        attrValues[ATTIDX_MAXOCCURS] = fXIntPool.getXInt(maxOccurNodeLimit);
						//new Integer(maxOccurNodeLimit);
                        max = maxOccurNodeLimit;
                    } 
                }
                }
                
                if (min > max) {
                    reportSchemaError ("p-props-correct.2.1",
                                       new Object[] {elName, attrValues[ATTIDX_MINOCCURS], attrValues[ATTIDX_MAXOCCURS]},
                                       element);
                    attrValues[ATTIDX_MINOCCURS] = attrValues[ATTIDX_MAXOCCURS];
                }
            }
        }

        return attrValues;
public voidcheckNonSchemaAttributes(com.sun.org.apache.xerces.internal.impl.xs.XSGrammarBucket grammarBucket)

        // for all attributes
        Enumeration keys = fNonSchemaAttrs.keys();
        XSAttributeDecl attrDecl;
        while (keys.hasMoreElements()) {
            // get name, uri, localpart
            String attrRName = (String)keys.nextElement();
            String attrURI = attrRName.substring(0,attrRName.indexOf(',"));
            String attrLocal = attrRName.substring(attrRName.indexOf(',")+1);
            // find associated grammar
            SchemaGrammar sGrammar = grammarBucket.getGrammar(attrURI);
            if (sGrammar == null)
                continue;
            // and get the datatype validator, if there is one
            attrDecl = sGrammar.getGlobalAttributeDecl(attrLocal);
            if (attrDecl == null)
                continue;
            XSSimpleType dv = (XSSimpleType)attrDecl.getTypeDefinition();
            if (dv == null)
                continue;

            // get all values appeared with this attribute name
            Vector values = (Vector)fNonSchemaAttrs.get(attrRName);
            String elName, attrVal;
            String attrName = (String)values.elementAt(0);
            // for each of the values
            int count = values.size();
            for (int i = 1; i < count; i += 2) {
                elName = (String)values.elementAt(i);
                try {
                    // and validate it using the XSSimpleType
                    // REVISIT: what would be the proper validation context?
                    //          guess we need to save that in the vectors too.
                    dv.validate((String)values.elementAt(i+1), null, null);
                } catch(InvalidDatatypeValueException ide) {
                    reportSchemaError ("s4s-att-invalid-value",
                                       new Object[] {elName, attrName, ide.getMessage()},
                                       null);
                }
            }
        }
protected java.lang.Object[]getAvailableArray()


    // get the next available array
       
        // if no array left in the pool, increase the pool size
        if (fArrayPool.length == fPoolPos) {
            // increase size
            fArrayPool = new Object[fPoolPos+INC_POOL_SIZE][];
            // initialize each *new* array
            for (int i = fPoolPos; i < fArrayPool.length; i++)
                fArrayPool[i] = new Object[ATTIDX_COUNT];
        }
        // get the next available one
        Object[] retArray = fArrayPool[fPoolPos];
        // clear it from the pool. this is for GC: if a caller forget to
        // return the array, we want that array to be GCed.
        fArrayPool[fPoolPos++] = null;
        // to make sure that one array is not returned twice, we use
        // the last entry to indicate whether an array is already returned
        // now set it to false.
        System.arraycopy(fTempArray, 0, retArray, 0, ATTIDX_COUNT-1);
        retArray[ATTIDX_ISRETURNED] = Boolean.FALSE;

        return retArray;
public static java.lang.Stringnormalize(java.lang.String content, short ws)

        int len = content == null ? 0 : content.length();
        if (len == 0 || ws == XSSimpleType.WS_PRESERVE)
            return content;

        StringBuffer sb = new StringBuffer();
        if (ws == XSSimpleType.WS_REPLACE) {
            char ch;
            // when it's replace, just replace #x9, #xa, #xd by #x20
            for (int i = 0; i < len; i++) {
                ch = content.charAt(i);
                if (ch != 0x9 && ch != 0xa && ch != 0xd)
                    sb.append(ch);
                else
                    sb.append((char)0x20);
            }
        } else {
            char ch;
            int i;
            boolean isLeading = true;
            // when it's collapse
            for (i = 0; i < len; i++) {
                ch = content.charAt(i);
                // append real characters, so we passed leading ws
                if (ch != 0x9 && ch != 0xa && ch != 0xd && ch != 0x20) {
                    sb.append(ch);
                    isLeading = false;
                }
                else {
                    // for whitespaces, we skip all following ws
                    for (; i < len-1; i++) {
                        ch = content.charAt(i+1);
                        if (ch != 0x9 && ch != 0xa && ch != 0xd && ch != 0x20)
                            break;
                    }
                    // if it's not a leading or tailing ws, then append a space
                    if (i < len - 1 && !isLeading)
                        sb.append((char)0x20);
                }
            }
        }

        return sb.toString();
voidreportSchemaError(java.lang.String key, java.lang.Object[] args, org.w3c.dom.Element ele)

        fSchemaHandler.reportSchemaError(key, args, ele);
voidreportSchemaFatalError(java.lang.String key, java.lang.Object[] args, org.w3c.dom.Element ele)

        fSchemaHandler.reportSchemaFatalError(key, args, ele);
public voidreset(com.sun.org.apache.xerces.internal.util.SymbolTable symbolTable)

        fSymbolTable = symbolTable;
        fNonSchemaAttrs.clear();
public voidresolveNamespace(org.w3c.dom.Element element, org.w3c.dom.Attr[] attrs, com.sun.org.apache.xerces.internal.impl.xs.SchemaNamespaceSupport nsSupport)

        // push the namespace context
        nsSupport.pushContext();

        // search for new namespace bindings
        int length = attrs.length;
        Attr sattr = null;
        String rawname, prefix, uri;
        for (int i = 0; i < length; i++) {
            sattr = attrs[i];
            rawname = DOMUtil.getName(sattr);
            prefix = null;
            if (rawname.equals(XMLSymbols.PREFIX_XMLNS))
                prefix = XMLSymbols.EMPTY_STRING;
            else if (rawname.startsWith("xmlns:"))
                prefix = fSymbolTable.addSymbol(DOMUtil.getLocalName(sattr));
            if (prefix != null) {
                uri = fSymbolTable.addSymbol(DOMUtil.getValue(sattr));
                nsSupport.declarePrefix(prefix, uri.length()!=0 ? uri : null);
            }
        }
public voidreturnAttrArray(java.lang.Object[] attrArray, com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDocumentInfo schemaDoc)

        // pop the namespace context
        if (schemaDoc != null)
            schemaDoc.fNamespaceSupport.popContext();

        // if 1. the pool is full; 2. the array is null;
        // 3. the array is of wrong size; 4. the array is already returned
        // then we can't accept this array to be returned
        if (fPoolPos == 0 ||
            attrArray == null ||
            attrArray.length != ATTIDX_COUNT ||
            ((Boolean)attrArray[ATTIDX_ISRETURNED]).booleanValue()) {
            return;
        }

        // mark this array as returned
        attrArray[ATTIDX_ISRETURNED] = Boolean.TRUE;
        // better clear nonschema vector
        if(attrArray[ATTIDX_NONSCHEMA] != null)
            ((Vector)attrArray[ATTIDX_NONSCHEMA]).clear();
        // and put it into the pool
        fArrayPool[--fPoolPos] = attrArray;
private java.lang.Objectvalidate(java.lang.Object[] attrValues, java.lang.String attr, java.lang.String ivalue, int dvIndex, com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDocumentInfo schemaDoc)

        if (ivalue == null)
            return null;

        // To validate these types, we don't actually need to normalize the
        // strings. We only need to remove the whitespace from both ends.
        // In some special cases (list types), StringTokenizer can correctly
        // process the un-normalized whitespace.        
        /**
         * REVISIT: Trim removes all leading and trailing characters less
         * than or equal to U+0020. This is okay for XML 1.0 since all
         * of the valid characters in that range are white space but
         * in XML 1.1 control chars are allowed. We shouldn't be trimming
         * those. -- mrglavas
         */
        String value = ivalue.trim();
        Object retValue = null;
        Vector memberType;
        int choice;

        switch (dvIndex) {
        case DT_BOOLEAN:
            if (value.equals(SchemaSymbols.ATTVAL_FALSE) ||
                value.equals(SchemaSymbols.ATTVAL_FALSE_0)) {
                retValue = Boolean.FALSE;
            } else if (value.equals(SchemaSymbols.ATTVAL_TRUE) ||
                       value.equals(SchemaSymbols.ATTVAL_TRUE_1)) {
                retValue = Boolean.TRUE;
            } else {
                throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.1", new Object[]{value, "boolean"});
            }
            break;
        case DT_NONNEGINT:
            try {
                if (value.length() > 0 && value.charAt(0) == '+")
                    value = value.substring(1);
                retValue = fXIntPool.getXInt(Integer.parseInt(value));
            } catch (NumberFormatException e) {
                throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.1", new Object[]{value, "nonNegativeInteger"});
            }
            if (((XInt)retValue).intValue() < 0)
                throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.1", new Object[]{value, "nonNegativeInteger"});
            break;
        case DT_POSINT:
            try {
                if (value.length() > 0 && value.charAt(0) == '+")
                    value = value.substring(1);
                retValue = fXIntPool.getXInt(Integer.parseInt(value));
            } catch (NumberFormatException e) {
                throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.1", new Object[]{value, "positiveInteger"});
            }
            if (((XInt)retValue).intValue() <= 0)
                throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.1", new Object[]{value, "positiveInteger"});
            break;
        case DT_BLOCK:
            // block = (#all | List of (substitution | extension | restriction | list | union))
            choice = 0;
            if (value.equals (SchemaSymbols.ATTVAL_POUNDALL)) {
                choice = XSConstants.DERIVATION_SUBSTITUTION|XSConstants.DERIVATION_EXTENSION|
                         XSConstants.DERIVATION_RESTRICTION|XSConstants.DERIVATION_LIST|
                         XSConstants.DERIVATION_UNION;
            }
            else {
                // use the default \t\r\n\f delimiters
                StringTokenizer t = new StringTokenizer(value);
                while (t.hasMoreTokens()) {
                    String token = t.nextToken ();

                    if (token.equals (SchemaSymbols.ATTVAL_SUBSTITUTION)) {
                        choice |= XSConstants.DERIVATION_SUBSTITUTION;
                    }
                    else if (token.equals (SchemaSymbols.ATTVAL_EXTENSION)) {
                        choice |= XSConstants.DERIVATION_EXTENSION;
                    }
                    else if (token.equals (SchemaSymbols.ATTVAL_RESTRICTION)) {
                        choice |= XSConstants.DERIVATION_RESTRICTION;
                    }
                    else if (token.equals (SchemaSymbols.ATTVAL_LIST)) {
                        choice |= XSConstants.DERIVATION_LIST;
                    }
                    else if (token.equals (SchemaSymbols.ATTVAL_UNION)) {
                        choice |= XSConstants.DERIVATION_UNION;
                    }
                    else {
                        throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.3", new Object[]{value, "(#all | List of (substitution | extension | restriction | list | union))"});
                    }
                }
            }
            retValue = fXIntPool.getXInt(choice);
            break;
        case DT_BLOCK1:
        case DT_FINAL:
            // block = (#all | List of (extension | restriction))
            // final = (#all | List of (extension | restriction))
            choice = 0;
            if (value.equals (SchemaSymbols.ATTVAL_POUNDALL)) {
                //choice = SchemaSymbols.EXTENSION|SchemaSymbols.RESTRICTION;
                // REVISIT: if #all, then make the result the combination of
                //          everything: substitution/externsion/restriction/list/union.
                //          would this be a problem?
                // the reason doing so is that when final/blockFinal on <schema>
                // is #all, it's not always the same as the conbination of those
                // values allowed by final/blockFinal.
                // for example, finalDefault="#all" is not always the same as
                // finalDefault="extension restriction".
                // if finalDefault="#all", final on any simple type would be
                // "extension restriction list union".
                choice = XSConstants.DERIVATION_SUBSTITUTION|XSConstants.DERIVATION_EXTENSION|
                         XSConstants.DERIVATION_RESTRICTION|XSConstants.DERIVATION_LIST|
                         XSConstants.DERIVATION_UNION;
            }
            else {
                // use the default \t\r\n\f delimiters
                StringTokenizer t = new StringTokenizer(value);
                while (t.hasMoreTokens()) {
                    String token = t.nextToken ();

                    if (token.equals (SchemaSymbols.ATTVAL_EXTENSION)) {
                        choice |= XSConstants.DERIVATION_EXTENSION;
                    }
                    else if (token.equals (SchemaSymbols.ATTVAL_RESTRICTION)) {
                        choice |= XSConstants.DERIVATION_RESTRICTION;
                    }
                    else {
                        throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.3", new Object[]{value, "(#all | List of (extension | restriction))"});
                    }
                }
            }
            retValue = fXIntPool.getXInt(choice);
            break;
        case DT_FINAL1:
            // final = (#all | List of (list | union | restriction))
            choice = 0;
            if (value.equals (SchemaSymbols.ATTVAL_POUNDALL)) {
                //choice = SchemaSymbols.RESTRICTION|SchemaSymbols.LIST|
                //         SchemaSymbols.UNION;
                // REVISIT: if #all, then make the result the combination of
                //          everything: substitution/externsion/restriction/list/union.
                //          would this be a problem?
                // same reason as above DT_BLOCK1/DT_FINAL
                choice = XSConstants.DERIVATION_SUBSTITUTION|XSConstants.DERIVATION_EXTENSION|
                         XSConstants.DERIVATION_RESTRICTION|XSConstants.DERIVATION_LIST|
                         XSConstants.DERIVATION_UNION;
            }
            else {
                // use the default \t\r\n\f delimiters
                StringTokenizer t = new StringTokenizer(value);
                while (t.hasMoreTokens()) {
                    String token = t.nextToken ();

                    if (token.equals (SchemaSymbols.ATTVAL_LIST)) {
                        choice |= XSConstants.DERIVATION_LIST;
                    }
                    else if (token.equals (SchemaSymbols.ATTVAL_UNION)) {
                        choice |= XSConstants.DERIVATION_UNION;
                    }
                    else if (token.equals (SchemaSymbols.ATTVAL_RESTRICTION)) {
                        choice |= XSConstants.DERIVATION_RESTRICTION;
                    }
                    else {
                        throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.3", new Object[]{value, "(#all | List of (list | union | restriction))"});
                    }
                }
            }
            retValue = fXIntPool.getXInt(choice);
            break;
        case DT_FINAL2:
            // finalDefault = (#all | List of (extension | restriction | list | union))
            choice = 0;
            if (value.equals (SchemaSymbols.ATTVAL_POUNDALL)) {
                //choice = SchemaSymbols.RESTRICTION|SchemaSymbols.LIST|
                //         SchemaSymbols.UNION;
                // REVISIT: if #all, then make the result the combination of
                //          everything: substitution/externsion/restriction/list/union.
                //          would this be a problem?
                // same reason as above DT_BLOCK1/DT_FINAL
                choice = XSConstants.DERIVATION_SUBSTITUTION|XSConstants.DERIVATION_EXTENSION|
                         XSConstants.DERIVATION_RESTRICTION|XSConstants.DERIVATION_LIST|
                         XSConstants.DERIVATION_UNION;
            }
            else {
                // use the default \t\r\n\f delimiters
                StringTokenizer t = new StringTokenizer(value);
                while (t.hasMoreTokens()) {
                    String token = t.nextToken ();

                    if (token.equals (SchemaSymbols.ATTVAL_EXTENSION)) {
                        choice |= XSConstants.DERIVATION_EXTENSION;
                    }
                    else if (token.equals (SchemaSymbols.ATTVAL_RESTRICTION)) {
                        choice |= XSConstants.DERIVATION_RESTRICTION;
                    }
                    else if (token.equals (SchemaSymbols.ATTVAL_LIST)) {
                        choice |= XSConstants.DERIVATION_LIST;
                    }
                    else if (token.equals (SchemaSymbols.ATTVAL_UNION)) {
                        choice |= XSConstants.DERIVATION_UNION;
                    }
                    else {
                        throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.3", new Object[]{value, "(#all | List of (extension | restriction | list | union))"});
                    }
                }
            }
            retValue = fXIntPool.getXInt(choice);
            break;
        case DT_FORM:
            // form = (qualified | unqualified)
            if (value.equals (SchemaSymbols.ATTVAL_QUALIFIED))
                retValue = INT_QUALIFIED;
            else if (value.equals (SchemaSymbols.ATTVAL_UNQUALIFIED))
                retValue = INT_UNQUALIFIED;
            else
                throw new InvalidDatatypeValueException("cvc-enumeration-valid",
                                                        new Object[]{value, "(qualified | unqualified)"});
            break;
        case DT_MAXOCCURS:
            // maxOccurs = (nonNegativeInteger | unbounded)
            if (value.equals(SchemaSymbols.ATTVAL_UNBOUNDED)) {
                retValue = INT_UNBOUNDED;
            } else {
                try {
                    retValue = validate(attrValues, attr, value, DT_NONNEGINT, schemaDoc);
                } catch (NumberFormatException e) {
                    throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.3", new Object[]{value, "(nonNegativeInteger | unbounded)"});
                }
            }
            break;
        case DT_MAXOCCURS1:
            // maxOccurs = 1
            if (value.equals("1"))
                retValue = fXIntPool.getXInt(1);
            else
                throw new InvalidDatatypeValueException("cvc-enumeration-valid",
                                                        new Object[]{value, "(1)"});
            break;
        case DT_MEMBERTYPES:
            // memberTypes = List of QName
            memberType = new Vector();
            try {
                // use the default \t\r\n\f delimiters
                StringTokenizer t = new StringTokenizer(value);
                while (t.hasMoreTokens()) {
                    String token = t.nextToken ();
                    QName qname = (QName)fExtraDVs[DT_QNAME].validate(token, schemaDoc.fValidationContext, null);
                    // kludge to handle chameleon includes/redefines...
                    if(qname.prefix == XMLSymbols.EMPTY_STRING && qname.uri == null && schemaDoc.fIsChameleonSchema)
                        qname.uri = schemaDoc.fTargetNamespace;
                    memberType.addElement(qname);
                }
                retValue = memberType;
            }
            catch (InvalidDatatypeValueException ide) {
                throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.2", new Object[]{value, "(List of QName)"});
            }
            break;
        case DT_MINOCCURS1:
            // minOccurs = (0 | 1)
            if (value.equals("0"))
                retValue = fXIntPool.getXInt(0);
            else if (value.equals("1"))
                retValue = fXIntPool.getXInt(1);
            else
                throw new InvalidDatatypeValueException("cvc-enumeration-valid",
                                                        new Object[]{value, "(0 | 1)"});
            break;
        case DT_NAMESPACE:
            // namespace = ((##any | ##other) | List of (anyURI | (##targetNamespace | ##local)) )
            if (value.equals(SchemaSymbols.ATTVAL_TWOPOUNDANY)) {
                // ##any
                retValue = INT_ANY_ANY;
            } else if (value.equals(SchemaSymbols.ATTVAL_TWOPOUNDOTHER)) {
                // ##other
                retValue = INT_ANY_NOT;
                String[] list = new String[2];
                list[0] = schemaDoc.fTargetNamespace;
                list[1] = null;
                attrValues[ATTIDX_NAMESPACE_LIST] = list;
            } else {
                // list
                retValue = INT_ANY_LIST;

                fNamespaceList.removeAllElements();

                // tokenize
                // use the default \t\r\n\f delimiters
                StringTokenizer tokens = new StringTokenizer(value);
                String token;
                String tempNamespace;
                try {
                    while (tokens.hasMoreTokens()) {
                        token = tokens.nextToken();
                        if (token.equals(SchemaSymbols.ATTVAL_TWOPOUNDLOCAL)) {
                            tempNamespace = null;
                        } else if (token.equals(SchemaSymbols.ATTVAL_TWOPOUNDTARGETNS)) {
                            tempNamespace = schemaDoc.fTargetNamespace;
                        } else {
                            // we have found namespace URI here
                            // need to add it to the symbol table
                            fExtraDVs[DT_ANYURI].validate(token, schemaDoc.fValidationContext, null);
                            tempNamespace = fSymbolTable.addSymbol(token);
                        }

                        //check for duplicate namespaces in the list
                        if (!fNamespaceList.contains(tempNamespace)) {
                            fNamespaceList.addElement(tempNamespace);
                        }
                    }
                } catch (InvalidDatatypeValueException ide) {
                    throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.3", new Object[]{value, "((##any | ##other) | List of (anyURI | (##targetNamespace | ##local)) )"});
                }

                // convert the vector to an array
                int num = fNamespaceList.size();
                String[] list = new String[num];
                fNamespaceList.copyInto(list);
                attrValues[ATTIDX_NAMESPACE_LIST] = list;
            }
            break;
        case DT_PROCESSCONTENTS:
            // processContents = (lax | skip | strict)
            if (value.equals (SchemaSymbols.ATTVAL_STRICT))
                retValue = INT_ANY_STRICT;
            else if (value.equals (SchemaSymbols.ATTVAL_LAX))
                retValue = INT_ANY_LAX;
            else if (value.equals (SchemaSymbols.ATTVAL_SKIP))
                retValue = INT_ANY_SKIP;
            else
                throw new InvalidDatatypeValueException("cvc-enumeration-valid",
                                                        new Object[]{value, "(lax | skip | strict)"});
            break;
        case DT_USE:
            // use = (optional | prohibited | required)
            if (value.equals (SchemaSymbols.ATTVAL_OPTIONAL))
                retValue = INT_USE_OPTIONAL;
            else if (value.equals (SchemaSymbols.ATTVAL_REQUIRED))
                retValue = INT_USE_REQUIRED;
            else if (value.equals (SchemaSymbols.ATTVAL_PROHIBITED))
                retValue = INT_USE_PROHIBITED;
            else
                throw new InvalidDatatypeValueException("cvc-enumeration-valid",
                                                        new Object[]{value, "(optional | prohibited | required)"});
            break;
        case DT_WHITESPACE:
            // value = preserve | replace | collapse
            if (value.equals (SchemaSymbols.ATTVAL_PRESERVE))
                retValue = INT_WS_PRESERVE;
            else if (value.equals (SchemaSymbols.ATTVAL_REPLACE))
                retValue = INT_WS_REPLACE;
            else if (value.equals (SchemaSymbols.ATTVAL_COLLAPSE))
                retValue = INT_WS_COLLAPSE;
            else
                throw new InvalidDatatypeValueException("cvc-enumeration-valid",
                                                        new Object[]{value, "(preserve | replace | collapse)"});
            break;
        }

        return retValue;