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Java > Open Source Codes > com > sun > org > apache > xerces > internal > xs > XSAttributeUse


1 /*
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4  *
5  * Copyright (c) 2003 The Apache Software Foundation. All rights
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24  * Alternately, this acknowledgment may appear in the software itself,
25  * if and wherever such third-party acknowledgments normally appear.
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27  * 4. The names "Xerces" and "Apache Software Foundation" must
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56  */
57
58 package com.sun.org.apache.xerces.internal.xs;
59
60 /**
61  * This interface represents the Attribute Use schema component.
62  */
63 public interface XSAttributeUse extends XSObject {
64     /**
65      * [required]: determines whether this use of an attribute declaration
66      * requires an appropriate attribute information item to be present, or
67      * merely allows it.
68      */
69     public boolean getRequired();
70
71     /**
72      * [attribute declaration]: provides the attribute declaration itself,
73      * which will in turn determine the simple type definition used.
74      */
75     public XSAttributeDeclaration getAttrDeclaration();
76
77     /**
78      * Value Constraint: one of default, fixed.
79      */
80     public short getConstraintType();
81
82     /**
83      * Value Constraint: The constraint value, otherwise <code>null</code>.
84      */
85     public String JavaDoc getConstraintValue();
86
87     /**
88      * Value Constraint: Binding specific actual constraint value or
89      * <code>null</code> if the value is in error or there is no value
90      * constraint.
91      * @exception XSException
92      * NOT_SUPPORTED_ERR: Raised if the implementation does not support this
93      * method.
94      */
95     public Object JavaDoc getActualVC()
96                                        throws XSException;
97
98     /**
99      * The actual constraint value built-in datatype, e.g.
100      * <code>STRING_DT, SHORT_DT</code>. If the type definition of this
101      * value is a list type definition, this method returns
102      * <code>LIST_DT</code>. If the type definition of this value is a list
103      * type definition whose item type is a union type definition, this
104      * method returns <code>LISTOFUNION_DT</code>. To query the actual
105      * constraint value of the list or list of union type definitions use
106      * <code>itemValueTypes</code>. If the <code>actualNormalizedValue</code>
107      * is <code>null</code>, this method returns <code>UNAVAILABLE_DT</code>
108      * .
109      * @exception XSException
110      * NOT_SUPPORTED_ERR: Raised if the implementation does not support this
111      * method.
112      */
113     public short getActualVCType()
114                                        throws XSException;
115
116     /**
117      * In the case the actual constraint value represents a list, i.e. the
118      * <code>actualValueType</code> is <code>LIST_DT</code>, the returned
119      * array consists of one type kind which represents the itemType. If the
120      * actual constraint value represents a list type definition whose item
121      * type is a union type definition, i.e. <code>LISTOFUNION_DT</code>,
122      * for each actual constraint value in the list the array contains the
123      * corresponding memberType kind. For examples, see
124      * <code>ItemPSVI.itemValueTypes</code>.
125      * @exception XSException
126      * NOT_SUPPORTED_ERR: Raised if the implementation does not support this
127      * method.
128      */
129     public ShortList getItemValueTypes()
130                                        throws XSException;
131
132 }
133
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