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/* -*- 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 .
*/
#ifndef INCLUDED_CONNECTIVITY_FILTERMANAGER_HXX
#define INCLUDED_CONNECTIVITY_FILTERMANAGER_HXX
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/sdb/XSQLQueryComposer.hpp>
#include <com/sun/star/sdbc/XConnection.hpp>
#include <rtl/ustrbuf.hxx>
#include <vector>
#include <connectivity/dbtoolsdllapi.hxx>
namespace dbtools
{
//= FilterManager
/** manages the filter of a database component with filter properties
The idea is that the filter which a database component actually really uses is composed of several single
filter components (which all are conjunctive).
First, there is a component which is visible to the clients of the database component itself - if they ask
the database component for the Filter property, they will get this public filter.
Second, there is an implicit filter, which is (to be) created from the MasterFields and DetailFields
property of the database component, if the latter denote columns.<br/>
For instance, if there is a link-pair CustomerID->cid, where |CustomerID| is a column of the master
database component, and |cid| is a column of the detail database component (the database component we're responsible for), then there will
be an implicit filter "cid = :param_cid_link" (or something like this), which is never visible
to the clients of the database component, but nevertheless needs to be propagated to the aggregated RowSet.<br/>
Actually, this implicit filter is maintained by the FormParameterManager.
Potentially, there could be more filter components (for instance, you could imagine database component
controls which act as live filter, which could be implemented with a third component), but
at the moment there are only these two.
*/
class OOO_DLLPUBLIC_DBTOOLS FilterManager
{
public:
enum class FilterComponent
{
PublicFilter, // The filter which is to be published as "Filter" property of the database component.
LinkFilter // The filter part which is implicitly created for a database component when connecting
// master and detail database components via column names.
};
private:
css::uno::Reference< css::beans::XPropertySet > m_xComponentAggregate;
OUString m_aPublicFilterComponent;
OUString m_aLinkFilterComponent;
bool m_bApplyPublicFilter;
public:
/// ctor
explicit FilterManager();
/// late ctor
void initialize(const css::uno::Reference< css::beans::XPropertySet >& _rxComponentAggregate );
/// makes the object forgetting the references to the database component
void dispose( );
const OUString& getFilterComponent( FilterComponent _eWhich ) const;
void setFilterComponent( FilterComponent _eWhich, const OUString& _rComponent );
inline bool isApplyPublicFilter( ) const { return m_bApplyPublicFilter; }
void setApplyPublicFilter( bool _bApply );
private:
/** retrieves a filter which is a conjunction of all single filter components
*/
OUString getComposedFilter( ) const;
/** appends one filter component to the statement in our composer
*/
static void appendFilterComponent( OUStringBuffer& io_appendTo, const OUString& i_component );
/// checks whether there is only one (or even no) non-empty filter component
bool isThereAtMostOneComponent( OUString& o_singleComponent ) const;
};
} // namespacefrm
#endif // CONNECTIVITY_FORMFILTERMANAGER_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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