Quelle predicateinput.hxx Sprache: C

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#ifndef INCLUDED_CONNECTIVITY_PREDICATEINPUT_HXX
#define INCLUDED_CONNECTIVITY_PREDICATEINPUT_HXX

#include <connectivity/sqlparse.hxx>
#include <connectivity/dbtoolsdllapi.hxx>
#include <com/sun/star/uno/Any.hxx>

namespace com::sun::star::beans { class XPropertySet; }
namespace com::sun::star::i18n { class XLocaleData4; }
namespace com::sun::star::sdbc { class XConnection; }
namespace com::sun::star::uno { class XComponentContext; }
namespace com::sun::star::util { class XNumberFormatter; }

namespace dbtools
{

    //= OPredicateInputController

    /** A class which allows input of an SQL predicate for a row set column
        into an edit field.
    */
    class UNLESS_MERGELIBS_MORE(OOO_DLLPUBLIC_DBTOOLS) OPredicateInputController
    {
    private:
        css::uno::Reference< css::sdbc::XConnection >
                m_xConnection;
        css::uno::Reference< css::util::XNumberFormatter >
                m_xFormatter;
        css::uno::Reference< css::i18n::XLocaleData4 >
                m_xLocaleData;

        ::connectivity::OSQLParser
                m_aParser;

    public:
        OPredicateInputController(
            const css::uno::Reference< css::uno::XComponentContext >& rxContext,
            const css::uno::Reference< css::sdbc::XConnection >& _rxConnection,
            const ::connectivity::IParseContext* _pParseContext = nullptr
        );

        /** transforms a "raw" predicate value (usually obtained from a user input) into a valid predicate for the given column
        @param _rPredicateValue
            The text to normalize.
        @param _rxField
            The field for which the text should be a predicate value.
        @param _pErrorMessage
            If not <NULL/>, and a parsing error occurs, the error message will be copied to the string the argument
            points to.
        */
        bool        normalizePredicateString(
            OUString& _rPredicateValue,
            const css::uno::Reference< css::beans::XPropertySet >& _rxField,
            OUString* _pErrorMessage = nullptr
        ) const;

        /** get the value of the predicate, as a string to be used in a WHERE clause
        @param _rPredicateValue
            the value which has been normalized using normalizePredicateString
        @param _rxField
            is the field for which a predicate is to be entered
        @see normalizePredicateString
        */
        OUString getPredicateValueStr(
            const OUString& _rPredicateValue,
            const css::uno::Reference< css::beans::XPropertySet > & _rxField
        ) const;

        OUString getPredicateValueStr(
            const OUString& _sField
            , const OUString& _rPredicateValue) const;

        /** get the value of the predicate, either as an empty or as a string
        @param _rPredicateValue
            the value which has been normalized using normalizePredicateString
        @param _rxField
            is the field for which a predicate is to be entered
        @see normalizePredicateString
        */
        css::uno::Any getPredicateValue(
            const OUString& _rPredicateValue,
            const css::uno::Reference< css::beans::XPropertySet > & _rxField
        ) const;

    private:
        std::unique_ptr<::connectivity::OSQLParseNode> implPredicateTree(
            OUString& _rErrorMessage,
            const OUString& _rStatement,
            const css::uno::Reference< css::beans::XPropertySet > & _rxField
        ) const;

        bool getSeparatorChars(
            const css::lang::Locale& _rLocale,
            sal_Unicode& _rDecSep,
            sal_Unicode& _rThdSep
        ) const;

        css::uno::Any implParseNode(std::unique_ptr<::connectivity::OSQLParseNode> pParseNode, bool _bForStatementUse) const;
    };

}   // namespace dbtools

#endif // INCLUDED_CONNECTIVITY_PREDICATEINPUT_HXX

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