/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   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 .
 */

module com {  module sun {  module star {  module container {
published interface XIndexAccess;
};};};};

 module com {  module sun {  module star {  module sdb {


/** simplifies the analyzing of single select statements.

    <p>
    The interface can be used for analyzing single SELECT statements without knowing the
    structure of the used query.
    </p>
 */
interface XSingleSelectQueryAnalyzer : com::sun::star::uno::XInterface
{

    /** returns the query.
        @returns
            the query
     */
    string getQuery();

    /** sets a new query for the composer, which may be expanded by filters, group by, having
        and sort criteria.
        @param command
            the single select statement to set
        @throws com::sun::star::sdbc::SQLException
            if a database access error occurs
            or the statement isn't a single select statement
            or the statement isn't valid
            or the statement can not be parsed.
     */
    void setQuery([in] string command )
            raises (com::sun::star::sdbc::SQLException);
    // FILTER

    /** returns the used filter.
        <p>
        The filter criteria returned is part of the where condition of the
        select command, but it does not contain the where token.
        </p>
        @returns
            the filter
     */
    string getFilter();

    /** returns the currently used filter.
             <p>
             The filter criteria is split into levels. Each level represents the
             OR criteria. Within each level, the filters are provided as an AND criteria
             with the name of the column and the filter condition. The filter condition
             is of type string. The operator used, is defined by com::sun::star::sdb::SQLFilterOperator.
             </p>
        @returns
            the structured filter
     */
    sequence< sequence<com::sun::star::beans::PropertyValue> >
        getStructuredFilter();

    // GROUP BY

    /** returns the currently used GROUP BY.
        <p>
        The group criteria returned is part of the GROUP BY clause of the
        select command, but it does not contain the GROUP BY keyword .
        </p>
        @returns
            the group
     */
    string getGroup();

    /** returns the currently used group.
        <p>
        The columns returned from the GROUP BY clause.
        </p>
        @returns
            a collection of com::sun::star::sdb::GroupColumn which form the GROUP BY.
     */
    com::sun::star::container::XIndexAccess getGroupColumns();

    // HAVING

    /** returns the used HAVING filter.
        <p>
        The HAVING filter criteria returned is part of the HAVING condition of the
        select command, but it does not contain the HAVING token.
        </p>
        @returns
            the filter
     */
    string getHavingClause();

    /** returns the currently used HAVING filter.
             <p>
             The HAVING filter criteria is split into levels. Each level represents the
             OR criteria. Within each level, the filters are provided as an AND criteria
             with the name of the column and the filter condition. The filter condition
             is of type string. The operator used, is defined by com::sun::star::sdb::SQLFilterOperator.
             </p>
        @returns
            the structured HAVING filter
     */
    sequence< sequence<com::sun::star::beans::PropertyValue> >
        getStructuredHavingClause();

    // ORDER BY
    /** returns the currently used sort order.
        <p>
        The order criteria returned is part of the ORDER BY clause of the
        select command, but it does not contain the ORDER BY keyword .
        </p>
        @returns
            the order
     */
    string getOrder();

    /** returns the currently used sort order.
        <p>
        The order criteria returned is part of the ORDER BY clause of the
        select command, but it does not contain the ORDER BY keyword .
        </p>
        @returns
            a collection of com::sun::star::sdb::OrderColumn which form the ORDER BY.
     */
    com::sun::star::container::XIndexAccess getOrderColumns();

    /** returns the query previously set at the analyzer, with all application-level
        features being substituted by their database-level counterparts.

        <p>The XSingleSelectQueryAnalyzer is an application-level component,
        which in some respect understands SQL features usually not present at the database
        level. As a prominent example, you might pass a <code>SELECT</code> statement to the analyzer
        which is based on another query.</p>

        <p>While all other methods will handle those additional features transparently - e.g.
        the query in the <code>FROM</code> part of a <code>SELECT</code> statement will be handled
        as if it really is a table -, <code>getQueryWithSubstitution</code> gives you the SQL statement
        where all those features have been stripped, and replaced with appropriate standard SQL.</p>

        <p>For example, consider a database document which contains a client-side query named <code>All Orders</code>.
        This query is not known to the underlying database, so an SQL statement like
        <code>SELECT * from "All Orders"</code> would be rejected by the database. However, instantiating
        a SingleSelectQueryAnalyzer at the Connection object, and passing it the above query,
        you can then use <code>getQueryWithSubstitution</code> to retrieve a statement where <code>"All Orders"</code>
        has been replaced with the <code>SELECT</code> statement which actually constitutes the <code>"All Orders"</code>
        query.</p>

        @throws com::sun::star::sdbc::SQLException
            if the query represented cannot be completely substituted. A usual case for this is a recursion in
            the sub queries: Consider a query named <code>foo</code>, which is defined as <code>SELECT * FROM "bar"</code>.
            Now assume that <code>bar</code> is a query defined as <code>SELECT * FROM "foo"</code>. Passing either
            of those statements to an analyzer, and calling getQueryWithSubstitution(), would result
            in an exception being thrown, since it's impossible to substitute the sub queries with their
            constituting statements.

        @see Connection
        @see XQueriesSupplier
        @see DatabaseDocument

        @since OOo 2.0.4
    */
    string getQueryWithSubstitution()
        raises (com::sun::star::sdbc::SQLException);

    /** sets a new query for the composer, which may be expanded by filters, group by, having
        and sort criteria.
        @param Command
            is the command which should be executed, the type of command depends
            on the CommandType.

            <p>In case of a \p CommandType of com::sun::star::sdb::CommandType::COMMAND,
            means in case the \p Command specifies an SQL statement, the inherited
            com::sun::star::sdbc::RowSet::EscapeProcessing
            becomes relevant:<br/>
            It then can be to used to specify whether the SQL statement should be analyzed on the
            client side before sending it to the database server.<br/>
            The default value for com::sun::star::sdbc::RowSet::EscapeProcessing
            is `TRUE`. By switching it to `FALSE`, you can pass backend-specific SQL statements,
            which are not standard SQL, to your database.</p>

            @see com::sun::star::sdb::CommandType
            @see com::sun::star::sdbc::RowSet::EscapeProcessing
        @param  CommandType
            is the type of the command.
            @see com::sun::star::sdb::CommandType
        @throws com::sun::star::sdbc::SQLException
            if a database access error occurs
            or the statement isn't a single select statement
            or the statement isn't valid
            or the statement can not be parsed.
     */
    void setCommand([in] string Command ,[in] long CommandType)
            raises (com::sun::star::sdbc::SQLException);
};


}; }; }; };

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
