/* -*- 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_DBMETADATA_HXX #define INCLUDED_CONNECTIVITY_DBMETADATA_HXX #include #include #include #include namespace dbtools { //= DatabaseMetaData struct DatabaseMetaData_Impl; /** encapsulates meta data about a database/connection which cannot be obtained from the usual XDatabaseMetaData result set. Meta data perhaps isn't really the right term ... Some of the methods in this class involved heuristics, some are just a convenient wrapper around more complex ways to obtain the same information. @todo Once CWS dba30 is integrated, we could easily add all the meta data which is part of the "Info" property of a data source. */ class OOO_DLLPUBLIC_DBTOOLS DatabaseMetaData { private: ::std::unique_ptr< DatabaseMetaData_Impl > m_pImpl; public: DatabaseMetaData(); /** constructs a DatabaseMetaData instance @param _rxConnection is the connection whose meta data you're interested in. Note that some of the information provided by this class can only be obtained if this connection denotes an application-level connection, i.e. supports the com.sun.star.sdb.Connection service. @throws css::lang::IllegalArgumentException if the given connection is not , but the XDatabaseMetaData provided by it are @throws css::sdbc::SQLException if obtaining the meta data from the connection throws an SQLException @throws css::uno::RuntimeException if obtaining the meta data from the connection throws an RuntimeException */ DatabaseMetaData( const css::uno::Reference< css::sdbc::XConnection >& _connection ); DatabaseMetaData( const DatabaseMetaData& _copyFrom ); DatabaseMetaData& operator=( const DatabaseMetaData& _copyFrom ); DatabaseMetaData( DatabaseMetaData&& _copyFrom ); DatabaseMetaData& operator=( DatabaseMetaData&& _copyFrom ); ~DatabaseMetaData(); public: /** determines whether or not the instances is based on a valid connection As long as this method returns true, you should expect all other methods throwing an SQLException when called. */ bool isConnected() const; /** resets the instance so that it's based on a new connection */ inline void reset( const css::uno::Reference< css::sdbc::XConnection >& _connection ) { *this = DatabaseMetaData( _connection ); } /// wraps XDatabaseMetaData::getIdentifierQuoteString const OUString& getIdentifierQuoteString() const; /// wraps XDatabaseMetaData::getCatalogSeparator const OUString& getCatalogSeparator() const; /** determines whether the database supports sub queries in the FROM part of a SELECT clause are supported. @throws css::sdbc::SQLException with SQLState 08003 (connection does not exist) if the instances was default-constructed and does not have a connection, yet. */ bool supportsSubqueriesInFrom() const; /** checks whether the database supports primary keys Since there's no dedicated API to ask a database for this, a heuristics needs to be applied. First, the PrimaryKeySupport settings of the data source is examined. If it is or , then value is returned. If it is , then the database meta data are examined for support of core SQL grammar, and the result is returned. The assumption is that a database/driver which supports core SQL grammar usually also supports primary keys, and vice versa. At least, experience shows this is true most of the time. */ bool supportsPrimaryKeys() const; /** determines whether names in the database should be restricted to SQL-92 identifiers Effectively, this method checks the EnableSQL92Check property of the data source settings, if present. */ bool restrictIdentifiersToSQL92() const; /** determines whether when generating SQL statements, an AS keyword should be generated before a correlation name. E.g., it determines whether SELECT * FROM table AS correlation_name or SELECT * FROM table correlation_name is generated. */ bool generateASBeforeCorrelationName() const; /** should date time be escaped like '2001-01-01' => {D '2001-01-01' } */ bool shouldEscapeDateTime() const; /** auto increment columns should be automatically used as primary key. */ bool isAutoIncrementPrimaryKey() const; /** determines the syntax to use for boolean comparison predicates @see css::sdb::BooleanComparisonMode */ sal_Int32 getBooleanComparisonMode() const; /** determines in relations are supported. * * \return when relations are supported, otherwise */ bool supportsRelations() const; /** determines if column alias names can be used in the order by clause. * * \return when relations are supported, otherwise */ bool supportsColumnAliasInOrderBy() const; /** determines whether user administration is supported for the database User administration support is controlled by the availability of the XUsersSupplier interface, and it returning a non-NULL users container. @param _rContext the component context we operate in. Might be needed to create the css.sdbc.DriverManager instance. */ bool supportsUserAdministration( const css::uno::Reference& _rContext ) const; /** determines whether in the application UI, empty table folders (aka catalogs/schemas) should be displayed */ bool displayEmptyTableFolders() const; /** determines that threads are supported. * * \return when threads are supported, otherwise */ bool supportsThreads() const; }; } // namespace dbtools #endif // INCLUDED_CONNECTIVITY_DBMETADATA_HXX /* vim:set shiftwidth=4 softtabstop=4 expandtab: */