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/*
 * Copyright 2005-2013 the original author or authors.
 *
 * Licensed 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.springframework.ldap.core;

import javax.naming.NamingException;
import javax.naming.directory.Attributes;
import java.util.List;

/**
 * Utility that helps with reading all attribute values from Active Directory using Incremental Retrieval of
 * Multi-valued Properties.
 *
 * @author Mattias Hellborg Arthursson
 * @since 1.3.2
 * @see Incremental Retrieval of Multi-valued Properties
 * @see org.springframework.ldap.core.support.DefaultIncrementalAttributesMapper
 */
public interface IncrementalAttributesMapper extends AttributesMapper {
    /**
     * Get all of the collected values for the specified attribute.
     *
     * @param attributeName the attribute to get values for.
     * @return the collected values for the specified attribute. Will be null
     * if the requested attribute has not been returned by the server (attribute did not exist).
     */
    List getValues(String attributeName);

    /**
     * Get all collected values for all managed attributes as an Attributes instance.
     *
     * @return an Attributes instance populated with all collected values.
     */
    Attributes getCollectedAttributes();

    /**
     * Check whether another query iteration is required to get all values for all attributes.
     *
     * @return true if there are more values for at least one of the managed attributes,
     *         false otherwise.
     */
    boolean hasMore();

    /**
     * Get properly formatted attributes for use in the next query. The attribute names included will
     * include Range specifiers as needed and only the attributes that have not been retrieved in full
     * will be included.
     *
     * @return an array of Strings to be used as input to e.g.
     *         {@link org.springframework.ldap.core.LdapTemplate#lookup(javax.naming.Name, String[], org.springframework.ldap.core.AttributesMapper)}
     *         in the next iteration.
     */
    String[] getAttributesForLookup();

    /**
     * Goes through all of the attributes to record their values and figure out whether a new query iteration
     * is needed to get more values.
     *
     * @param attributes attributes from a SearchResult.
     * @return this instance.
     * @throws javax.naming.NamingException
     */
    T mapFromAttributes(Attributes attributes) throws NamingException;
}
 















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