xref: /aoo4110/main/offapi/com/sun/star/sdb/tools/XObjectNames.idl (revision b1cdbd2c)

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#ifndef __com_sun_star_sdb_tools_XObjectNames_idl__
#define __com_sun_star_sdb_tools_XObjectNames_idl__

#ifndef __com_sun_star_lang_IllegalArgumentException_idl__
#include <com/sun/star/lang/IllegalArgumentException.idl>
#endif

#ifndef __com_sun_star_sdbc_SQLException_idl__
#include <com/sun/star/sdbc/SQLException.idl>
#endif

//=============================================================================
module com {  module sun {  module star {  module sdb { module tools {
//=============================================================================

//-----------------------------------------------------------------------------
/** encapsulates functionality which you might find useful when writing a
    database application which deals with query and table names.

    <p>The most important task fulfilled by this instance is that it hides
    different naming restrictions from you, which are caused by server-side
    or client side specialities.</p>

    <p>For instance, it can validate names against
    the characters allowed in the object names of a connection. Also, it
    relieves you from caring whether a database supports queries in a <code>SELECT</code>
    statment's <code>FROM</code> part (known as "queries in queries"). In such
    databases, query and table names share a common namespace, thus they must be
    unique. Using this interface, you can easily ensure this uniqueness.</p>

    <p>All of the functionality present in this interface depends on a connection,
    thus it entry point for obtaining it is a <type scope="com::sun::star::sdb">Connection</type>
    service.</p>

    <p>The component itself does not have life-time control mechanimns, i.e. you
    cannot explicitly dispose it (<member scope="com::sun::star::lang">XComponent::dispose</member>),
    and you cannot be notified when it dies.<br/>
    However, if your try to access any of its methods or attributes, after the
    connection which was used to create it was closed, a <type scope="com::sun::star::lang">DisposedException</type>
    will be thrown.</p>

    @see XConnectionTools

    @since OpenOffice 2.0.4
*/
published interface XObjectNames
{
    /** suggests a (unique) table or query name

        <p>If in the database, tables and queries share a common namespace, this will be respected
        by this function.</p>

        <p>Note that in an multi-threaded environment, the name you obtain here is not absolutely
        guaranteed to be unique. It is unique at the very moment the function returns to you.
        But already when you evaluate the returned value, it might not be uniquey anymore, if
        another process or thread created a query or table with this name.</p>

        <p>This implies that you cannot rely on the name's uniqueness, but you can use it as
        first guess to present to the user. In most cases, it will still be sufficient when
        you are actually creating the table respectively query.</p>

        @param CommandType
            specifies the <type scope="com::sun::star::sdb">CommandType</type> of the object for which
            a unique name is to be generated. Must be either <member scope="com::sun::star::sdb">CommandType::TABLE</member>
            or <member scope="com::sun::star::sdb">CommandType::QUERY</member>.

        @param BaseName
            specifies the base of the to-be-created object name. If empty, a default
            base name will be used.

        @throws com::sun::star::lang::IllegalArgumentException
            if <arg>CommandType</arg> specifies an invalid command type.
    */
    string  suggestName( [in] long CommandType, [in] string BaseName )
        raises ( com::sun::star::lang::IllegalArgumentException );

    /** converts the given object name to a name which is valid in the database.

        <p>The conversion takes place by converting every character which is neither
        allowed by the SQL-92 standard, nor part of the special characters supported
        by the database, with an underscore character (_).</p>

        @see com::sun::star::sdbc::XDatabaseMetaData::getExtraNameCharacters
    */
    string  convertToSQLName( [in] string Name );

    /** checks whether a given name is used as table respectively query name in the database.

        <p>If in the database, tables and queries share a common namespace, this will be respected
        by this function.</p>

        <p>As before, the information you obtain by calling this method might be obsolete
        in the very moment you evaluate this, in case another process or thread interferes.
        However, it's usually sufficiently up-to-date for purpose of using it in a database
        application driven by user interactions.</p>

        @param CommandType
            specifies the <type scope="com::sun::star::sdb">CommandType</type> of the object whose
            name should be checked. Must be either <member scope="com::sun::star::sdb">CommandType::TABLE</member>
            or <member scope="com::sun::star::sdb">CommandType::QUERY</member>.

        @param Name
            specifies the to-be-checked name of the object.

        @return
            <TRUE/> if and only if the given name is legitimate as table respectively query name
            to be used in the database.

        @throws com::sun::star::lang::IllegalArgumentException
            if <arg>CommandType</arg> specifies an invalid command type.

        @see checkNameIsUsed
    */
    boolean isNameUsed( [in] long CommandType, [in] string Name )
        raises ( com::sun::star::lang::IllegalArgumentException );

    /** checks whether a given name is valid as table or query name

        <p>For tables, the name must consist of characters allowed by the SQL-92 standard,
        plus characters allowed by the connection as extra name characters.</p>

        <p>For queries, names are nearly arbitrary, except that usual quoting characters
        must not be part of the name.</p>

        @see com::sun::star::sdbc::XDatabaseMetaData::getExtraNameCharacters
    */
    boolean isNameValid( [in] long CommandType, [in] string Name )
        raises ( com::sun::star::lang::IllegalArgumentException );

    /** checks whether a given name is allowed for a to-be-created table or query in the
        database.

        <p>This method basically does the same checks as <member>isNameUsed</member> and
        <member>isNameValid</member>. In case the given name is not allowed, it throws an
        exception. This error can be presented to the user, to give it a common experience
        in all cases where he's required to enter an object name.</p>

        @see isNameUsed
        @see isNameValid
        @see com::sun::star::sdb::ErrorMessageDialog
        @see com::sun::star::sdb::InteractionHandler
    */
    void    checkNameForCreate( [in] long CommandType, [in] string Name )
            raises ( com::sun::star::sdbc::SQLException );
};

//=============================================================================
}; }; }; }; };
//=============================================================================

#endif