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A slightly adapted version of Xerces 2.11.0 to allow the XMLStringBuffer responsible for XML attribute scanning to start larger and thus avoid extended appending times. The initial buffer size is controlled by settting the system property julielab.xerces.attributebuffersize (also available as constant XMLScanner#ATTRIBUTE_BUFFER_SIZE).

There is a newer version: 2.11.0.1

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.xerces.xs;

/**
 * Represents an actual value of a simple type.
 */
public interface XSValue {
    
    /**
     * The schema normalized value.
     */
    public String getNormalizedValue();

    /**
     * The actual value. null if the value is in error. 
     */
    public Object getActualValue();

    /**
     * The declared simple type definition used to validate this value.
     * It can be a union type.
     */
    public XSSimpleTypeDefinition getTypeDefinition();

    /**
     * If the declared simple type definition is a union, return the member
     * type actually used to validate the value. Otherwise null.
     */
    public XSSimpleTypeDefinition getMemberTypeDefinition();

    /**
     * If getTypeDefinition() returns a list type whose item type
     * is a union type, then this method returns a list with the same length
     * as the value list, for simple types that actually validated
     * the corresponding item in the value. 
     */
    public XSObjectList getMemberTypeDefinitions();

    /**
     * The actual value built-in datatype, e.g. 
     * STRING_DT, SHORT_DT. If the type definition of this 
     * value is a list type definition, this method returns 
     * LIST_DT. If the type definition of this value is a list 
     * type definition whose item type is a union type definition, this 
     * method returns LISTOFUNION_DT. To query the actual value 
     * of the list or list of union type definitions use 
     * itemValueTypes().
     */
    public short getActualValueType();

    /**
     * In the case the actual value represents a list, i.e. the 
     * actualNormalizedValueType is LIST_DT, the 
     * returned array consists of one type kind which represents the itemType
     * . For example: 
     *  <simpleType name="listtype"> <list 
     * itemType="positiveInteger"/> </simpleType> <element 
     * name="list" type="listtype"/> ... <list>1 2 3</list> 
     *  
     * The schemaNormalizedValue value is "1 2 3", the 
     * actualNormalizedValueType value is LIST_DT, 
     * and the itemValueTypes is an array of size 1 with the 
     * value POSITIVEINTEGER_DT. 
     * 
 If the actual value represents a list type definition whose item 
     * type is a union type definition, i.e. LISTOFUNION_DT, 
     * for each actual value in the list the array contains the 
     * corresponding memberType kind. For example: 
     *  <simpleType 
     * name='union_type' memberTypes="integer string"/> <simpleType 
     * name='listOfUnion'> <list itemType='union_type'/> 
     * </simpleType> <element name="list" type="listOfUnion"/> 
     * ... <list>1 2 foo</list> 
     *  The 
     * schemaNormalizedValue value is "1 2 foo", the 
     * actualNormalizedValueType is LISTOFUNION_DT
     * , and the itemValueTypes is an array of size 3 with the 
     * following values: INTEGER_DT, INTEGER_DT, STRING_DT. 
     */
    public ShortList getListValueTypes();

}