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package com.sun.org.apache.xerces.internal.xs;

/**
 *  Represents an abstract PSVI item for an element or an attribute 
 * information item.
 */
public interface ItemPSVI {
    /**
     * Validity value indicating that validation has either not been performed 
     * or that a strict assessment of validity could not be performed. 
     */
    public static final short VALIDITY_NOTKNOWN         = 0;
    /**
     *  Validity value indicating that validation has been strictly assessed 
     * and the item in question is invalid according to the rules of schema 
     * validation. 
     */
    public static final short VALIDITY_INVALID          = 1;
    /**
     *  Validation status indicating that schema validation has been performed 
     * and the item in question is valid according to the rules of schema 
     * validation. 
     */
    public static final short VALIDITY_VALID            = 2;
    /**
     *  Validation status indicating that schema validation has been performed 
     * and the item in question has specifically been skipped. 
     */
    public static final short VALIDATION_NONE           = 0;
    /**
     * Validation status indicating that schema validation has been performed 
     * on the item in question under the rules of lax validation. 
     */
    public static final short VALIDATION_PARTIAL        = 1;
    /**
     *  Validation status indicating that full schema validation has been 
     * performed on the item. 
     */
    public static final short VALIDATION_FULL           = 2;
    /**
     *  The nearest ancestor element information item with a 
     * [schema information] property (or this element item 
     * itself if it has such a property). For more information refer to 
     * element validation context and attribute validation context . 
     */
    public String getValidationContext();

    /**
     *  [validity]: determines the validity of the schema item 
     * with respect to the validation being attempted. The value will be one 
     * of the constants: VALIDITY_NOTKNOWN, 
     * VALIDITY_INVALID or VALIDITY_VALID. 
     */
    public short getValidity();

    /**
     *  [validation attempted]: determines the extent to which 
     * the schema item has been validated. The value will be one of the 
     * constants: VALIDATION_NONE, 
     * VALIDATION_PARTIAL or VALIDATION_FULL. 
     */
    public short getValidationAttempted();

    /**
     *  [schema error code]: a list of error codes generated from 
     * the validation attempt or an empty StringList if no 
     * errors occurred during the validation attempt. 
     */
    public StringList getErrorCodes();

    /**
     * [schema normalized value]: the normalized value of this 
     * item after validation. 
     */
    public String getSchemaNormalizedValue();

    /**
     * [schema normalized value]: Binding specific actual value 
     * or null if the value is in error. 
     * @exception XSException
     *   NOT_SUPPORTED_ERR: Raised if the implementation does not support this 
     *   method.
     */
    public Object getActualNormalizedValue()
                                   throws XSException;

    /**
     * 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. If the actualNormalizedValue
     *  is null, this method returns UNAVAILABLE_DT
     * . 
     * @exception XSException
     *   NOT_SUPPORTED_ERR: Raised if the implementation does not support this 
     *   method.
     */
    public short getActualNormalizedValueType()
                                   throws XSException;

    /**
     * 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. 
     * @exception XSException
     *   NOT_SUPPORTED_ERR: Raised if the implementation does not support this 
     *   method.
     */
    public ShortList getItemValueTypes()
                                   throws XSException;

    /**
     *  [type definition]: an item isomorphic to the type 
     * definition used to validate the schema item. 
     */
    public XSTypeDefinition getTypeDefinition();

    /**
     * [member type definition]: if and only if that type 
     * definition is a simple type definition with {variety} union, or a 
     * complex type definition whose {content type} is a simple type 
     * definition with {variety} union, then an item isomorphic to that 
     * member of the union's {member type definitions} which actually 
     * validated the schema item's normalized value. 
     */
    public XSSimpleTypeDefinition getMemberTypeDefinition();

    /**
     * [schema default]: the canonical lexical representation of 
     * the declaration's {value constraint} value. For more information 
     * refer to element schema default and attribute schema default. 
     */
    public String getSchemaDefault();

    /**
     * [schema specified]: if true, the value was specified in 
     * the schema. If false, the value comes from the infoset. For more 
     * information refer to element specified and attribute specified. 
     */
    public boolean getIsSchemaSpecified();

}