/*
 * 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.impl.xs.identity;

import org.apache.xerces.xs.ShortList;


/**
 * Interface for storing values associated to an identity constraint. 
 * Each value stored corresponds to a field declared for the identity
 * constraint. One instance of an object implementing this interface
 * is created for each identity constraint per element declaration in
 * the instance document to store the information for this identity
 * constraint.
 * <p>
 * <strong>Note:</strong> The component performing identity constraint
 * collection and validation is responsible for providing an 
 * implementation of this interface. The component is also responsible
 * for performing the necessary checks required by each type of identity
 * constraint.
 *
 * @xerces.internal 
 *
 * @author Andy Clark, IBM
 *
 * @version $Id: ValueStore.java 730488 2008-12-31 21:58:19Z knoaman $
 */
public interface ValueStore {
    
    //
    // ValueStore methods
    //

    /** 
     * Adds the specified value to the value store.
     *
     * @param field The field associated to the value. This reference
     *              is used to ensure that each field only adds a value
     *              once within a selection scope.
     * @param mayMatch a flag indiciating whether the field may be matched.
     * @param actualValue The value to add.
     * @param valueType Type of the value to add.
     * @param itemValueType If the value is a list, a list of types for each of the values in the list.
     */
    public void addValue(Field field, boolean mayMatch, Object actualValue, short valueType, ShortList itemValueType);

    /**
     * Since the valueStore will have access to an error reporter, this
     * allows it to be called appropriately.
     * @param key  the key of the localized error message
     * @param args  the list of arguments for substitution.
     */
    public void reportError(String key, Object[] args);
    
    /**
     * Sets the name of the element which holds the identity constraint
     * @param elemenName The name of the element which holds the identity constraint.
     */
    public void setElementName(String elementName);
    
    /** 
     * @return the name of the element which holds the identity constraint that is stored in this value store
     */
    public String getElementName();
    

} // interface ValueStore
