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/*
 * 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 com.rometools.modules.opensearch;

import java.util.List;

import com.rometools.modules.opensearch.entity.OSQuery;
import com.rometools.rome.feed.atom.Link;

/**
 * Provides access to A9 Open Search information.
 *
 * @author Michael W. Nassif ([email protected])
 */
public interface OpenSearchResponse {

    /**
     * # totalResults – the maximum number of results available for these search terms
     *
     * * Restrictions: An integer greater than or equal to 0. * Default: The number of items that
     * were returned in this set of results. * Requirements: May appear zero or one time.
     *
     * @param totalResults A positive integer value.
     */
    public void setTotalResults(int totalResults);

    /**
     * # totalResults – the maximum number of results available for these search terms
     *
     * * Restrictions: An integer greater than or equal to 0. * Default: The number of items that
     * were returned in this set of results. * Requirements: May appear zero or one time.
     *
     * @return a positive integer value.
     */
    public int getTotalResults();

    /**
     * # startIndex – the index of the first item returned in the result.
     *
     * * Restrictions: An integer greater than or equal to 1. * Note: The first result is 1. *
     * Default: 1 * Requirements: May appear zero or one time.
     *
     * @param startIndex int value >= 1.
     */
    public void setStartIndex(int startIndex);

    /**
     * # startIndex – the index of the first item returned in the result.
     *
     * * Restrictions: An integer greater than or equal to 1. * Note: The first result is 1. *
     * Default: 1 * Requirements: May appear zero or one time.
     *
     * @return int value >= 1.
     */
    public int getStartIndex();

    /**
     * # itemsPerPage – the maximum number of items that can appear in one page of results.
     *
     * * Restrictions: An integer greater than or equal to 1. * Default: The number of items that
     * were returned in this set of results. * Requirements: May appear zero or one time.
     *
     * @param itemsPerPage int value >= 1.
     */
    public void setItemsPerPage(int itemsPerPage);

    /**
     * # itemsPerPage – the maximum number of items that can appear in one page of results.
     *
     * * Restrictions: An integer greater than or equal to 1. * Default: The number of items that
     * were returned in this set of results. * Requirements: May appear zero or one time.
     *
     * @return int value >= 1
     */
    public int getItemsPerPage();

    /**
     * # link – a reference back to the OpenSearch Description file
     *
     * * Attributes: This is a clone of the link element in Atom, including href, hreflang, rel, and
     * type attributes. * Restrictions: The rel attribute must equal search. * Note: New in version
     * 1.1. * Requirements: May appear zero or one time.
     *
     * @param link link to the open search spec.
     */
    public void setLink(Link link);

    /**
     * # link – a reference back to the OpenSearch Description file
     *
     * * Attributes: This is a clone of the link element in Atom, including href, hreflang, rel, and
     * type attributes. * Restrictions: The rel attribute must equal search. * Note: New in version
     * 1.1. * Requirements: May appear zero or one time.
     *
     * @return link to the opensearch spec.
     */
    public Link getLink();

    // list of OSResponseQuery interfaces
    /**
     * Query – in an OpenSearch Response, can be used both to echo back the original
     * query and to suggest new searches. Please see the OpenSearch Query
     * specification for more information.
     * 
     * Note: New in version 1.1.
     * Requirements: May appear zero or more times. Note that the “Q” is capitalized.
     *
     * @param query List of OSQuery objects.
     */
    public void setQueries(List query);

    /**
     * Query – in an OpenSearch Response, can be used both to echo back the original
     * query and to suggest new searches. Please see the OpenSearch Query
     * specification for more information.
     * 
     * Note: New in version 1.1.
     * Requirements: May appear zero or more times. Note that the “Q” is capitalized.
     *
     * @return A list of OSQuery objects.
     */
    public List getQueries();

    // convenience method
    /**
     * Adds a query to the module.
     *
     * @param query OSQuery object to add.
     */
    public void addQuery(OSQuery query);
}