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| -rw-r--r-- | include/ucbhelper/resultsetmetadata.hxx | 342 |
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diff --git a/include/ucbhelper/resultsetmetadata.hxx b/include/ucbhelper/resultsetmetadata.hxx new file mode 100644 index 000000000..8f8e28c1c --- /dev/null +++ b/include/ucbhelper/resultsetmetadata.hxx @@ -0,0 +1,342 @@ +/* -*- 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_UCBHELPER_RESULTSETMETADATA_HXX +#define INCLUDED_UCBHELPER_RESULTSETMETADATA_HXX + +#include <vector> +#include <memory> +#include <com/sun/star/uno/Reference.h> +#include <com/sun/star/uno/Sequence.h> +#include <com/sun/star/lang/XTypeProvider.hpp> +#include <com/sun/star/sdbc/XResultSetMetaData.hpp> +#include <cppuhelper/implbase.hxx> +#include <ucbhelper/ucbhelperdllapi.h> + +namespace com::sun::star { + namespace beans { struct Property; } + namespace uno { class XComponentContext; } +} + +namespace ucbhelper_impl { + struct ResultSetMetaData_Impl; +} + +namespace ucbhelper +{ + + +/** + * This is a structure that holds additional meta data for one column + * of a resultset. The default values set in the constructor should be a + * good guess for many UCB use cases. + */ +struct ResultSetColumnData +{ + /** @see ResultSetMetaData::isCaseSensitive */ + bool isCaseSensitive; + + inline ResultSetColumnData(); +}; + +// Note: Never change the initial values! Implementations using this struct +// may heavily depend on the behaviour of the default constructor. + +ResultSetColumnData::ResultSetColumnData() +: isCaseSensitive( true ) +{ +} + + +/** + * This is an implementation of the interface XResultSetMetaData. It can be + * used to implement the interface + * css::sdbc::XResultSetMetaDataSupplier, which is required for + * implementations of service com.sun.star.ucb.ContentResultSet. + */ +class UCBHELPER_DLLPUBLIC ResultSetMetaData final : + public cppu::WeakImplHelper<css::sdbc::XResultSetMetaData> +{ + std::unique_ptr<ucbhelper_impl::ResultSetMetaData_Impl> m_pImpl; + css::uno::Reference< css::uno::XComponentContext > m_xContext; + css::uno::Sequence< css::beans::Property > m_aProps; + +public: + + /** + * Constructor. ResultSet is readonly by default. + * + * @param rxSMgr is a Service Manager. + * @param rProps is a sequence of properties (partially) describing the + * columns of a resultset. + */ + ResultSetMetaData( + const css::uno::Reference< css::uno::XComponentContext >& rxContext, + const css::uno::Sequence< css::beans::Property >& rProps ); + + /** + * Constructor. + * + * @param rxSMgr is a Service Manager. + * @param rProps is a sequence of properties (partially) describing the + * columns of a resultset. + * @param rColumnData contains additional meta data for the columns of + * a resultset, which override the default values returned by the + * appropriate methods of this class. The length of rColumnData + * must be the same as length of rProps. + * rColumnData[ 0 ] corresponds to data in rProps[ 0 ], + * rColumnData[ 1 ] corresponds to data in rProps[ 1 ], ... + */ + ResultSetMetaData( + const css::uno::Reference< css::uno::XComponentContext >& rxContext, + const css::uno::Sequence< css::beans::Property >& rProps, + const std::vector< ResultSetColumnData >& rColumnData ); + + /** + * Destructor. + */ + virtual ~ResultSetMetaData() override; + + // XResultSetMetaData + + /** + * Returns the number of columns of the resultset. + * + * @return the length of the property sequence. + */ + virtual sal_Int32 SAL_CALL + getColumnCount() override; + /** + * Checks whether column is automatically numbered, which makes it + * read-only. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return true, if column is automatically numbered. + */ + virtual sal_Bool SAL_CALL + isAutoIncrement( sal_Int32 column ) override; + /** + * Checks whether column is case sensitive. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return true, if column is case sensitive. + */ + virtual sal_Bool SAL_CALL + isCaseSensitive( sal_Int32 column ) override; + /** + * Checks whether the value stored in column can be used in a + * WHERE clause. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return true, if the column is searchable. + */ + virtual sal_Bool SAL_CALL + isSearchable( sal_Int32 column ) override; + /** + * Checks whether column is a cash value. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return true, if the column is a cash value. + */ + virtual sal_Bool SAL_CALL + isCurrency( sal_Int32 column ) override; + /** + * Checks whether a NULL can be stored in column. + * + * @see css::sdbc::ColumnValue + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return css::sdbc::ColumnValue::NULLABLE, if a NULL + * can be stored in the column. + */ + virtual sal_Int32 SAL_CALL + isNullable( sal_Int32 column ) override; + /** + * Checks whether the value stored in column is a signed number. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return true, if the value stored in column is a signed number. + */ + virtual sal_Bool SAL_CALL + isSigned( sal_Int32 column ) override; + /** + * Gets the normal maximum width in characters for column. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return the normal maximum width in characters for column. + */ + virtual sal_Int32 SAL_CALL + getColumnDisplaySize( sal_Int32 column ) override; + /** + * Gets the suggested column title for column, to be used in print- + * outs and displays. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return the column label. + */ + virtual OUString SAL_CALL + getColumnLabel( sal_Int32 column ) override; + /** + * Gets the name of column. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return the name of the property that corresponds to column. + */ + virtual OUString SAL_CALL + getColumnName( sal_Int32 column ) override; + /** + * Gets the schema name for the table from which column of this + * result set was derived. + * Because this feature is not widely supported, the return value + * for many DBMSs will be an empty string. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return the schema name of column or an empty string. + */ + virtual OUString SAL_CALL + getSchemaName( sal_Int32 column ) override; + /** + * For number types, getprecision gets the number of decimal digits + * in column. + * For character types, it gets the maximum length in characters for + * column. + * For binary types, it gets the maximum length in bytes for column. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return the precision for the column. + */ + virtual sal_Int32 SAL_CALL + getPrecision( sal_Int32 column ) override; + /** + * Gets the number of digits to the right of the decimal point for + * values in column. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return the scale of the column. + */ + virtual sal_Int32 SAL_CALL + getScale( sal_Int32 column ) override; + /** + * Gets the name of the table from which column of this result set + * was derived or "" if there is none (for example, for a join). + * Because this feature is not widely supported, the return value + * for many DBMSs will be an empty string. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return the table name for column or an empty string. + */ + virtual OUString SAL_CALL + getTableName( sal_Int32 column ) override; + virtual OUString SAL_CALL + /** + * Gets the catalog name for the table from which column of this + * result set was derived. + * Because this feature is not widely supported, the return value + * for many DBMSs will be an empty string. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return the catalog name for column or an empty string. + */ + getCatalogName( sal_Int32 column ) override; + /** + * Gets the JDBC type for the value stored in column. ... The STRUCT + * and DISTINCT type codes are always returned for structured and + * distinct types, regardless of whether the value will be mapped + * according to the standard mapping or be a custom mapping. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return the type of the property that corresponds to column - mapped + * from UNO-Type to SQL-Type. + */ + virtual sal_Int32 SAL_CALL + getColumnType( sal_Int32 column ) override; + /** + * Gets the type name used by this particular data source for the + * values stored in column. If the type code for the type of value + * stored in column is STRUCT, DISTINCT or JAVA_OBJECT, this method + * returns a fully-qualified SQL type name. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return the column type name. + */ + virtual OUString SAL_CALL + getColumnTypeName( sal_Int32 column ) override; + /** + * Indicates whether a column is definitely not writable. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return true, if the column is definitely not writable. + */ + virtual sal_Bool SAL_CALL + isReadOnly( sal_Int32 column ) override; + /** + * Indicates whether it is possible for a write on the column to succeed. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return true, if it is possible for a write to succeed. + */ + virtual sal_Bool SAL_CALL + isWritable( sal_Int32 column ) override; + /** + * Indicates whether a write on the column will definitely succeed. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return true, if a write on the column will definitely succeed. + */ + virtual sal_Bool SAL_CALL + isDefinitelyWritable( sal_Int32 column ) override; + /** + * Returns the fully-qualified name of the service whose instances + * are manufactured if the method + * css::sdbc::ResultSet::getObject is called to retrieve a + * value from the column. + * + * @param column is the number of the column for that a value shall + * be returned. The first column is 1, the second is 2, ... + * @return the service name for column or an empty string, if no service + * is applicable. + */ + virtual OUString SAL_CALL + getColumnServiceName( sal_Int32 column ) override; +}; + +} // namespace ucbhelper + +#endif /* ! INCLUDED_UCBHELPER_RESULTSETMETADATA_HXX */ + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |