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Xerces2 is the next generation of high performance, fully compliant XML parsers in the Apache Xerces family. This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building parser components and configurations that is extremely modular and easy to program. The Apache Xerces2 parser is the reference implementation of XNI but other parser components, configurations, and parsers can be written using the Xerces Native Interface. For complete design and implementation documents, refer to the XNI Manual. Xerces2 is a fully conforming XML Schema 1.0 processor. A partial experimental implementation of the XML Schema 1.1 Structures and Datatypes Working Drafts (December 2009) and an experimental implementation of the XML Schema Definition Language (XSD): Component Designators (SCD) Candidate Recommendation (January 2010) are provided for evaluation. For more information, refer to the XML Schema page. Xerces2 also provides a complete implementation of the Document Object Model Level 3 Core and Load/Save W3C Recommendations and provides a complete implementation of the XML Inclusions (XInclude) W3C Recommendation. It also provides support for OASIS XML Catalogs v1.1. Xerces2 is able to parse documents written according to the XML 1.1 Recommendation, except that it does not yet provide an option to enable normalization checking as described in section 2.13 of this specification. It also handles namespaces according to the XML Namespaces 1.1 Recommendation, and will correctly serialize XML 1.1 documents if the DOM level 3 load/save APIs are in use.

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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;

/**
 *  This interface defines constants used by this specification.
 */
public interface XSConstants {
    // XML Schema Components
    /**
     * The object describes an attribute declaration.
     */
    public static final short ATTRIBUTE_DECLARATION     = 1;
    /**
     * The object describes an element declaration.
     */
    public static final short ELEMENT_DECLARATION       = 2;
    /**
     * The object describes a complex type or simple type definition.
     */
    public static final short TYPE_DEFINITION           = 3;
    /**
     * The object describes an attribute use definition.
     */
    public static final short ATTRIBUTE_USE             = 4;
    /**
     * The object describes an attribute group definition.
     */
    public static final short ATTRIBUTE_GROUP           = 5;
    /**
     * The object describes a model group definition.
     */
    public static final short MODEL_GROUP_DEFINITION    = 6;
    /**
     * A model group.
     */
    public static final short MODEL_GROUP               = 7;
    /**
     * The object describes a particle.
     */
    public static final short PARTICLE                  = 8;
    /**
     * The object describes a wildcard.
     */
    public static final short WILDCARD                  = 9;
    /**
     * The object describes an identity constraint definition.
     */
    public static final short IDENTITY_CONSTRAINT       = 10;
    /**
     * The object describes a notation declaration.
     */
    public static final short NOTATION_DECLARATION      = 11;
    /**
     * The object describes an annotation.
     */
    public static final short ANNOTATION                = 12;
    /**
     * The object describes a constraining facet. Note: this object does not 
     * describe pattern and enumeration facets.
     */
    public static final short FACET                     = 13;
    /**
     * The object describes enumeration and pattern facets. 
     */
    public static final short MULTIVALUE_FACET          = 14;

    // Derivation constants
    /**
     * No constraint is available.
     */
    public static final short DERIVATION_NONE           = 0;
    /**
     * XSTypeDefinition final set or 
     * XSElementDeclaration disallowed substitution group.
     */
    public static final short DERIVATION_EXTENSION      = 1;
    /**
     * XSTypeDefinition final set or 
     * XSElementDeclaration disallowed substitution group.
     */
    public static final short DERIVATION_RESTRICTION    = 2;
    /**
     * XSTypeDefinition final set.
     */
    public static final short DERIVATION_SUBSTITUTION   = 4;
    /**
     * XSTypeDefinition final set.
     */
    public static final short DERIVATION_UNION          = 8;
    /**
     * XSTypeDefinition final set.
     */
    public static final short DERIVATION_LIST           = 16;

    // Scope
    /**
     * The scope of a declaration within named model groups or attribute 
     * groups is absent. The scope of such a declaration is 
     * determined when it is used in the construction of complex type 
     * definitions. 
     */
    public static final short SCOPE_ABSENT              = 0;
    /**
     * A scope of global identifies top-level declarations. 
     */
    public static final short SCOPE_GLOBAL              = 1;
    /**
     * Locally scoped declarations are available for use only 
     * within the complex type.
     */
    public static final short SCOPE_LOCAL               = 2;

    // Value Constraint
    /**
     * Indicates that the component does not have any value constraint.
     */
    public static final short VC_NONE                   = 0;
    /**
     * Indicates that there is a default value constraint.
     */
    public static final short VC_DEFAULT                = 1;
    /**
     * Indicates that there is a fixed value constraint for this attribute.
     */
    public static final short VC_FIXED                  = 2;

    // Built-in types: primitive and derived
    /**
     * anySimpleType
     */
    public static final short ANYSIMPLETYPE_DT          = 1;
    /**
     * string
     */
    public static final short STRING_DT                 = 2;
    /**
     * boolean
     */
    public static final short BOOLEAN_DT                = 3;
    /**
     * decimal
     */
    public static final short DECIMAL_DT                = 4;
    /**
     * float
     */
    public static final short FLOAT_DT                  = 5;
    /**
     * double
     */
    public static final short DOUBLE_DT                 = 6;
    /**
     * duration
     */
    public static final short DURATION_DT               = 7;
    /**
     * dateTime
     */
    public static final short DATETIME_DT               = 8;
    /**
     * time
     */
    public static final short TIME_DT                   = 9;
    /**
     * date
     */
    public static final short DATE_DT                   = 10;
    /**
     * gYearMonth
     */
    public static final short GYEARMONTH_DT             = 11;
    /**
     * gYear
     */
    public static final short GYEAR_DT                  = 12;
    /**
     * gMonthDay
     */
    public static final short GMONTHDAY_DT              = 13;
    /**
     * gDay
     */
    public static final short GDAY_DT                   = 14;
    /**
     * gMonth
     */
    public static final short GMONTH_DT                 = 15;
    /**
     * hexBinary
     */
    public static final short HEXBINARY_DT              = 16;
    /**
     * base64Binary
     */
    public static final short BASE64BINARY_DT           = 17;
    /**
     * anyURI
     */
    public static final short ANYURI_DT                 = 18;
    /**
     * QName
     */
    public static final short QNAME_DT                  = 19;
    /**
     * NOTATION
     */
    public static final short NOTATION_DT               = 20;
    /**
     * normalizedString
     */
    public static final short NORMALIZEDSTRING_DT       = 21;
    /**
     * token
     */
    public static final short TOKEN_DT                  = 22;
    /**
     * language
     */
    public static final short LANGUAGE_DT               = 23;
    /**
     * NMTOKEN
     */
    public static final short NMTOKEN_DT                = 24;
    /**
     * Name
     */
    public static final short NAME_DT                   = 25;
    /**
     * NCName
     */
    public static final short NCNAME_DT                 = 26;
    /**
     * ID
     */
    public static final short ID_DT                     = 27;
    /**
     * IDREF
     */
    public static final short IDREF_DT                  = 28;
    /**
     * ENTITY
     */
    public static final short ENTITY_DT                 = 29;
    /**
     * integer
     */
    public static final short INTEGER_DT                = 30;
    /**
     * nonPositiveInteger
     */
    public static final short NONPOSITIVEINTEGER_DT     = 31;
    /**
     * negativeInteger
     */
    public static final short NEGATIVEINTEGER_DT        = 32;
    /**
     * long
     */
    public static final short LONG_DT                   = 33;
    /**
     * int
     */
    public static final short INT_DT                    = 34;
    /**
     * short
     */
    public static final short SHORT_DT                  = 35;
    /**
     * byte
     */
    public static final short BYTE_DT                   = 36;
    /**
     * nonNegativeInteger
     */
    public static final short NONNEGATIVEINTEGER_DT     = 37;
    /**
     * unsignedLong
     */
    public static final short UNSIGNEDLONG_DT           = 38;
    /**
     * unsignedInt
     */
    public static final short UNSIGNEDINT_DT            = 39;
    /**
     * unsignedShort
     */
    public static final short UNSIGNEDSHORT_DT          = 40;
    /**
     * unsignedByte
     */
    public static final short UNSIGNEDBYTE_DT           = 41;
    /**
     * positiveInteger
     */
    public static final short POSITIVEINTEGER_DT        = 42;
    /**
     * The type represents a list type definition whose item type (itemType) 
     * is a union type definition
     */
    public static final short LISTOFUNION_DT            = 43;
    /**
     * The type represents a list type definition.
     */
    public static final short LIST_DT                   = 44;
    /**
     * The built-in type category is not available.
     */
    public static final short UNAVAILABLE_DT            = 45;
    
}