content: /*
   * Copyright (c) 2004 World Wide Web Consortium,
   *
   * (Massachusetts Institute of Technology, European Research Consortium for
   * Informatics and Mathematics, Keio University). All Rights Reserved. This
   * work is distributed under the W3C(r) Software License [1] in the hope that
   * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
   * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   *
   * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
   */
  
  package mf.org.w3c.dom;
  
  /**
   * The <code>TypeInfo</code> interface represents a type referenced from
   * <code>Element</code> or <code>Attr</code> nodes, specified in the schemas
   * associated with the document. The type is a pair of a namespace URI and
   * name properties, and depends on the document's schema.
   * <p> If the document's schema is an XML DTD [<a href='http://www.w3.org/TR/2004/REC-xml-20040204'>XML 1.0</a>], the values
   * are computed as follows:
   * <ul>
   * <li> If this type is referenced from an
   * <code>Attr</code> node, <code>typeNamespace</code> is
   * <code>"http://www.w3.org/TR/REC-xml"</code> and <code>typeName</code>
   * represents the <b>[attribute type]</b> property in the [<a href='http://www.w3.org/TR/2004/REC-xml-infoset-20040204/'>XML Information Set</a>]
   * . If there is no declaration for the attribute, <code>typeNamespace</code>
   * and <code>typeName</code> are <code>null</code>.
   * </li>
   * <li> If this type is
   * referenced from an <code>Element</code> node, <code>typeNamespace</code>
   * and <code>typeName</code> are <code>null</code>.
   * </li>
   * </ul>
   * <p> If the document's schema is an XML Schema [<a href='http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/'>XML Schema Part 1</a>]
   * , the values are computed as follows using the post-schema-validation
   * infoset contributions (also called PSVI contributions):
   * <ul>
   * <li> If the <b>[validity]</b> property exists AND is <em>"invalid"</em> or <em>"notKnown"</em>: the {target namespace} and {name} properties of the declared type if
   * available, otherwise <code>null</code>.
   * <p ><b>Note:</b>  At the time of writing, the XML Schema specification does
   * not require exposing the declared type. Thus, DOM implementations might
   * choose not to provide type information if validity is not valid.
   * </li>
   * <li> If the <b>[validity]</b> property exists and is <em>"valid"</em>:
   * <ol>
   * <li> If <b>[member type definition]</b> exists:
   * <ol>
   * <li>If {name} is not absent, then expose {name} and {target
   * namespace} properties of the <b>[member type definition]</b> property;
   * </li>
   * <li>Otherwise, expose the namespace and local name of the
   * corresponding anonymous type name.
   * </li>
   * </ol>
   * </li>
   * <li> If the <b>[type definition]</b> property exists:
   * <ol>
   * <li>If {name} is not absent, then expose {name} and {target
   * namespace} properties of the <b>[type definition]</b> property;
   * </li>
   * <li>Otherwise, expose the namespace and local name of the
   * corresponding anonymous type name.
   * </li>
   * </ol>
   * </li>
   * <li> If the <b>[member type definition anonymous]</b> exists:
   * <ol>
   * <li>If it is false, then expose <b>[member type definition name]</b> and <b>[member type definition namespace]</b> properties;
   * </li>
   * <li>Otherwise, expose the namespace and local name of the
   * corresponding anonymous type name.
   * </li>
   * </ol>
   * </li>
   * <li> If the <b>[type definition anonymous]</b> exists:
   * <ol>
   * <li>If it is false, then expose <b>[type definition name]</b> and <b>[type definition namespace]</b> properties;
   * </li>
   * <li>Otherwise, expose the namespace and local name of the
   * corresponding anonymous type name.
   * </li>
   * </ol>
   * </li>
   * </ol>
   * </li>
   * </ul>
   * <p ><b>Note:</b>  Other schema languages are outside the scope of the W3C
   * and therefore should define how to represent their type systems using
   * <code>TypeInfo</code>.
   * <p>See also the <a href='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407'>Document Object Model (DOM) Level 3 Core Specification</a>.
   *
   * @since DOM Level 3
   */
  public interface TypeInfo {
      /**
       * If the document's schema is an XML Schema [<a href='http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/'>XML Schema Part 1</a>]
       * , this constant represents the derivation by <a href='http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/#key-typeRestriction'>
       * restriction</a> if complex types are involved, or a <a href='http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/#element-restriction'>
       * restriction</a> if simple types are involved.
       * <br>  The reference type definition is derived by restriction from the
       * other type definition if the other type definition is the same as the
       * reference type definition, or if the other type definition can be
       * reached recursively following the {base type definition} property
       * from the reference type definition, and all the <em>derivation methods</em> involved are restriction.
       */
      int DERIVATION_RESTRICTION = 0x00000001;
      /**
       * If the document's schema is an XML Schema [<a href='http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/'>XML Schema Part 1</a>]
       * , this constant represents the derivation by <a href='http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/#key-typeExtension'>
       * extension</a>.
       * <br>  The reference type definition is derived by extension from the
       * other type definition if the other type definition can be reached
       * recursively following the {base type definition} property from the
       * reference type definition, and at least one of the <em>derivation methods</em> involved is an extension.
       */
      int DERIVATION_EXTENSION = 0x00000002;
  
      // DerivationMethods
      /**
       * If the document's schema is an XML Schema [<a href='http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/'>XML Schema Part 1</a>]
       * , this constant represents the <a href='http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/#element-union'>
       * union</a> if simple types are involved.
       * <br> The reference type definition is derived by union from the other
       * type definition if there exists two type definitions T1 and T2 such
       * as the reference type definition is derived from T1 by
       * <code>DERIVATION_RESTRICTION</code> or
       * <code>DERIVATION_EXTENSION</code>, T2 is derived from the other type
       * definition by <code>DERIVATION_RESTRICTION</code>, T1 has {variety} <em>union</em>, and one of the {member type definitions} is T2. Note that T1 could be
       * the same as the reference type definition, and T2 could be the same
       * as the other type definition.
       */
      int DERIVATION_UNION = 0x00000004;
      /**
       * If the document's schema is an XML Schema [<a href='http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/'>XML Schema Part 1</a>]
       * , this constant represents the <a href='http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/#element-list'>list</a>.
       * <br> The reference type definition is derived by list from the other
       * type definition if there exists two type definitions T1 and T2 such
       * as the reference type definition is derived from T1 by
       * <code>DERIVATION_RESTRICTION</code> or
       * <code>DERIVATION_EXTENSION</code>, T2 is derived from the other type
       * definition by <code>DERIVATION_RESTRICTION</code>, T1 has {variety} <em>list</em>, and T2 is the {item type definition}. Note that T1 could be the same as
       * the reference type definition, and T2 could be the same as the other
       * type definition.
       */
      int DERIVATION_LIST = 0x00000008;
  
      /**
       * The name of a type declared for the associated element or attribute,
       * or <code>null</code> if unknown.
       */
      String getTypeName();
  
      /**
       * The namespace of the type declared for the associated element or
       * attribute or <code>null</code> if the element does not have
       * declaration or if no namespace information is available.
       */
      String getTypeNamespace();
  
      /**
       * This method returns if there is a derivation between the reference
       * type definition, i.e. the <code>TypeInfo</code> on which the method
       * is being called, and the other type definition, i.e. the one passed
       * as parameters.
       *
       * @param typeNamespaceArg the namespace of the other type definition.
       * @param typeNameArg      the name of the other type definition.
       * @param derivationMethod the type of derivation and conditions applied
       *                         between two types, as described in the list of constants provided
       *                         in this interface.
       * @return If the document's schema is a DTD or no schema is associated
       * with the document, this method will always return <code>false</code>
       * .  If the document's schema is an XML Schema, the method will
       * <code>true</code> if the reference type definition is derived from
       * the other type definition according to the derivation parameter. If
       * the value of the parameter is <code>0</code> (no bit is set to
       * <code>1</code> for the <code>derivationMethod</code> parameter),
       * the method will return <code>true</code> if the other type
       * definition can be reached by recursing any combination of {base
       * type definition}, {item type definition}, or {member type
       * definitions} from the reference type definition.
       */
      boolean isDerivedFrom(String typeNamespaceArg,
                            String typeNameArg,
                            int derivationMethod);
  
  }
  