class Poco::UUIDGenerator

Overview

This class implements a generator for Universal Unique Identifiers, as specified in Appendix A of the DCE 1.1 Remote Procedure Call Specification (http://www.opengroup.org/onlinepubs/9629399/), RFC 2518 (WebDAV), section 6.4.1 and the UUIDs and GUIDs internet draft by Leach/Salz from February, 1998 (http://ftp.ics.uci.edu/pub/ietf/webdav/uuid-guid/draft-leach-uuids-guids-01.txt) More…

#include <UUIDGenerator.h>

class UUIDGenerator
{
public:
    // methods

    UUID
    create();

    UUID
    createFromName(
        const UUID& nsid,
        const std::string& name
        );

    UUID
    createFromName(
        const UUID& nsid,
        const std::string& name,
        DigestEngine& de
        );

    UUID
    createFromName(
        const UUID& nsid,
        const std::string& name,
        DigestEngine& de,
        UUID::Version version
        );

    UUID
    createRandom();

    UUID
    createOne();

    static
    UUIDGenerator&
    defaultGenerator();

protected:
    // methods

    Timestamp::UtcTimeVal
    timeStamp();

    void
    getNode();
};

Detailed Documentation

This class implements a generator for Universal Unique Identifiers, as specified in Appendix A of the DCE 1.1 Remote Procedure Call Specification (http://www.opengroup.org/onlinepubs/9629399/), RFC 2518 (WebDAV), section 6.4.1 and the UUIDs and GUIDs internet draft by Leach/Salz from February, 1998 (http://ftp.ics.uci.edu/pub/ietf/webdav/uuid-guid/draft-leach-uuids-guids-01.txt)

Construction

~UUIDGenerator()

Destroys the UUIDGenerator.

Methods

UUID
create()

Creates a new time-based UUID, using the MAC address of one of the system’s ethernet adapters.

Throws a SystemException if no MAC address can be obtained.

UUID
createFromName(
    const UUID& nsid,
    const std::string& name
    )

Creates a name-based UUID.

UUID
createFromName(
    const UUID& nsid,
    const std::string& name,
    DigestEngine& de
    )

Creates a name-based UUID, using the given digest engine.

Note: in order to create a standard-compliant UUID, the given DigestEngine must be either an instance of MD5Engine or SHA1Engine. The version field of the UUID will be set accordingly.

UUID
createFromName(
    const UUID& nsid,
    const std::string& name,
    DigestEngine& de,
    UUID::Version version
    )

Creates a name-based UUID, using the given digest engine and version.

UUID
createRandom()

Creates a random UUID.

UUID
createOne()

Tries to create and return a time-based UUID (see create()), and, if that does not work due to the unavailability of a MAC address, creates and returns a random UUID (see createRandom()).

The UUID::version() method can be used to determine the actual kind of the UUID generated.

static
UUIDGenerator&
defaultGenerator()

Returns a reference to the default UUIDGenerator.