VideoSegmentResource

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

@dataclass
class VideoSegmentResource:
    res_id: str
    label: str
    segment_of: str
    segment_bounds: SegmentBounds
    title: str | None = None
    comments: list[str] = field(default_factory=list)
    descriptions: list[str] = field(default_factory=list)
    keywords: list[str] = field(default_factory=list)
    relates_to: list[str] = field(default_factory=list)
    permissions: Permissions = Permissions.PROJECT_SPECIFIC_PERMISSIONS
    migration_metadata: MigrationMetadata | None = None

    def __post_init__(self) -> None:
        _check_strings(string_to_check=self.res_id, res_id=self.res_id, field_name="Resource ID")
        _check_strings(string_to_check=self.label, res_id=self.res_id, field_name="Label")
        _check_strings(string_to_check=self.segment_of, res_id=self.res_id, field_name="isSegmentOf")

    @staticmethod
    def create_new(
        res_id: str,
        label: str,
        segment_of: str,
        segment_start: float,
        segment_end: float,
        permissions: Permissions = Permissions.PROJECT_SPECIFIC_PERMISSIONS,
    ) -> VideoSegmentResource:
        """
        Creates a new video segment resource, i.e. a time span of a MovingImageRepresentation.

        [See XML documentation for details](https://docs.dasch.swiss/latest/DSP-TOOLS/file-formats/xml-data-file/#video-segment-and-audio-segment)

        Args:
            res_id: ID of this video segment resource
            label: label of this video segment resource
            segment_of: ID of the video resource that this segment refers to (cardinality 1)
            segment_start: start of the segment in seconds (cardinality 1)
            segment_end: end of the segment in seconds (cardinality 1)
            permissions: permissions of this resource

        Returns:
            A video segment resource

        Examples:
            ```python
            video_segment = xmllib.VideoSegmentResource.create_new(
                res_id="ID",
                label="label",
                segment_of="video_resource_id",
                segment_start=1.2,
                segment_end=3.4,
            )
            ```
        """
        return VideoSegmentResource(
            res_id=res_id,
            label=label,
            segment_of=segment_of,
            segment_bounds=SegmentBounds(segment_start, segment_end, res_id),
            permissions=permissions,
        )

    def add_title(self, title: str) -> VideoSegmentResource:
        """
        Add a title to the resource.

        Args:
            title: text

        Returns:
            The original resource, with the added title

        Examples:
            ```python
            video_segment = video_segment.add_title("segment title")
            ```
        """
        if self.title:
            _warn_value_exists(old_value=self.title, new_value=title, value_field="title", res_id=self.res_id)
        self.title = title
        return self

    def add_title_optional(self, title: Any) -> VideoSegmentResource:
        """
        If the value is not empty, add it as title, otherwise return the resource unchanged.

        Args:
            title: text or empty value

        Returns:
            The original resource, with the added title

        Examples:
            ```python
            video_segment = video_segment.add_title("segment title")
            ```

            ```python
            video_segment = video_segment.add_title(None)
            ```
        """
        if is_nonempty_value(title):
            if self.title:
                _warn_value_exists(old_value=self.title, new_value=title, value_field="title", res_id=self.res_id)
            self.title = title
        return self

    def add_comment(
        self,
        text: str,
    ) -> VideoSegmentResource:
        """
        Add a comment to the resource

        Args:
            text: text

        Returns:
            The original resource, with the added comment

        Examples:
            ```python
            video_segment = video_segment.add_comment("comment text")
            ```
        """
        self.comments.append(text)
        return self

    def add_comment_multiple(
        self,
        texts: Collection[str],
    ) -> VideoSegmentResource:
        """
        Add several comments to the resource

        Args:
            texts: list of texts

        Returns:
            The original resource, with the added comments

        Examples:
            ```python
            video_segment = video_segment.add_comment_multiple(["comment 1", "comment 2"])
            ```
        """
        vals = check_and_fix_collection_input(texts, "hasComment", self.res_id)
        self.comments.extend(vals)
        return self

    def add_comment_optional(
        self,
        text: Any,
    ) -> VideoSegmentResource:
        """
        If the value is not empty, add it as comment, otherwise return the resource unchanged.

        Args:
            text: text of the comment (or empty value)

        Returns:
            The original resource, with the added comment

        Examples:
            ```python
            video_segment = video_segment.add_comment_optional("comment text")
            ```

            ```python
            video_segment = video_segment.add_comment_optional(None)
            ```
        """
        if is_nonempty_value(text):
            self.comments.append(text)
        return self

    def add_description(self, description: str) -> VideoSegmentResource:
        """
        Add a description to the resource

        Args:
            description: text

        Returns:
            The original resource, with the added description

        Examples:
            ```python
            video_segment = video_segment.add_description("description text")
            ```
        """
        self.descriptions.append(description)
        return self

    def add_description_multiple(self, descriptions: Collection[str]) -> VideoSegmentResource:
        """
        Add several descriptions to the resource

        Args:
            descriptions: list of texts

        Returns:
            The original resource, with the added descriptions

        Examples:
            ```python
            video_segment = video_segment.add_description_multiple(["description 1", "description 2"])
            ```
        """
        vals = check_and_fix_collection_input(descriptions, "description", self.res_id)
        self.descriptions.extend(vals)
        return self

    def add_description_optional(self, description: Any) -> VideoSegmentResource:
        """
        If the value is not empty, add it as description, otherwise return the resource unchanged.

        Args:
            description: text or empty value

        Returns:
            The original resource, with the added description

        Examples:
            ```python
            video_segment = video_segment.add_description_optional("description text")
            ```

            ```python
            video_segment = video_segment.add_description_optional(None)
            ```
        """
        if is_nonempty_value(description):
            self.descriptions.append(description)
        return self

    def add_keyword(self, keyword: str) -> VideoSegmentResource:
        """
        Add a keyword to the resource

        Args:
            keyword: text

        Returns:
            The original resource, with the added keyword

        Examples:
            ```python
            video_segment = video_segment.add_keyword("keyword")
            ```
        """
        self.keywords.append(keyword)
        return self

    def add_keyword_multiple(self, keywords: Collection[str]) -> VideoSegmentResource:
        """
        Add several keywords to the resource

        Args:
            keywords: list of texts

        Returns:
            The original resource, with the added keywords

        Examples:
            ```python
            video_segment = video_segment.add_keyword_multiple(["keyword 1", "keyword 2"])
            ```
        """
        vals = check_and_fix_collection_input(keywords, "keywords", self.res_id)
        self.keywords.extend(vals)
        return self

    def add_keyword_optional(self, keyword: Any) -> VideoSegmentResource:
        """
        If the value is not empty, add it as keyword, otherwise return the resource unchanged.

        Args:
            keyword: text or empty value

        Returns:
            The original resource, with the added keyword

        Examples:
            ```python
            video_segment = video_segment.add_keyword_optional("keyword")
            ```

            ```python
            video_segment = video_segment.add_keyword_optional(None)
            ```
        """
        if is_nonempty_value(keyword):
            self.keywords.append(keyword)
        return self

    def add_relates_to(self, relates_to: str) -> VideoSegmentResource:
        """
        Add a link to a related resource

        Args:
            relates_to: ID of the related resource

        Returns:
            The original resource, with the added related resource

        Examples:
            ```python
            video_segment = video_segment.add_relates_to("target_resource_id")
            ```
        """
        self.relates_to.append(relates_to)
        return self

    def add_relates_to_multiple(self, relates_to: Collection[str]) -> VideoSegmentResource:
        """
        Add several links to related resources

        Args:
            relates_to: list of IDs of the related resources

        Returns:
            The original resource, with the added related resources

        Examples:
            ```python
            video_segment = video_segment.add_relates_to_multiple(["target_resource_id_1", "target_resource_id_2"])
            ```
        """
        vals = check_and_fix_collection_input(relates_to, "relatesTo", self.res_id)
        self.relates_to.extend(vals)
        return self

    def add_relates_to_optional(self, relates_to: Any) -> VideoSegmentResource:
        """
        If the value is not empty, add it as related resource, otherwise return the resource unchanged.

        Args:
            relates_to: ID or the related resource or empty value

        Returns:
            The original resource, with the added related resources

        Examples:
            ```python
            video_segment = video_segment.add_relates_to_optional("target_resource_id")
            ```

            ```python
            video_segment = video_segment.add_relates_to_optional(None)
            ```
        """
        if is_nonempty_value(relates_to):
            self.relates_to.append(relates_to)
        return self

    def add_migration_metadata(
        self, creation_date: str | None, iri: str | None = None, ark: str | None = None
    ) -> VideoSegmentResource:
        """
        Add metadata from a SALSAH migration.

        Args:
            creation_date: creation date of the resource in SALSAH
            iri: Original IRI in SALSAH
            ark: Original ARK in SALSAH

        Raises:
            InputError: if metadata already exists

        Returns:
            The original resource, with the added metadata

        Examples:
            ```python
            video_segment = video_segment.add_migration_metadata(
                iri="http://rdfh.ch/4123/DiAmYQzQSzC7cdTo6OJMYA",
                creation_date="1999-12-31T23:59:59.9999999+01:00"
            )
            ```
        """
        if self.migration_metadata:
            raise InputError(
                f"The resource with the ID '{self.res_id}' already contains migration metadata, "
                f"no new data can be added."
            )
        self.migration_metadata = MigrationMetadata(creation_date=creation_date, iri=iri, ark=ark, res_id=self.res_id)
        return self

    def serialise(self) -> etree._Element:
        res_ele = self._serialise_resource_element()
        res_ele.extend(_serialise_segment_children(self))
        return res_ele

    def _serialise_resource_element(self) -> etree._Element:
        attribs = {"label": self.label, "id": self.res_id}
        if self.permissions != Permissions.PROJECT_SPECIFIC_PERMISSIONS:
            attribs["permissions"] = self.permissions.value
        return etree.Element(f"{DASCH_SCHEMA}video-segment", attrib=attribs, nsmap=XML_NAMESPACE_MAP)

create_new

Creates a new video segment resource, i.e. a time span of a MovingImageRepresentation.

See XML documentation for details

Parameters:

Name	Type	Description	Default
res_id	str	ID of this video segment resource	required
label	str	label of this video segment resource	required
segment_of	str	ID of the video resource that this segment refers to (cardinality 1)	required
segment_start	float	start of the segment in seconds (cardinality 1)	required
segment_end	float	end of the segment in seconds (cardinality 1)	required
permissions	Permissions	permissions of this resource	PROJECT_SPECIFIC_PERMISSIONS

Returns:

Type	Description
VideoSegmentResource	A video segment resource

Examples:

video_segment = xmllib.VideoSegmentResource.create_new(
    res_id="ID",
    label="label",
    segment_of="video_resource_id",
    segment_start=1.2,
    segment_end=3.4,
)

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

@staticmethod
def create_new(
    res_id: str,
    label: str,
    segment_of: str,
    segment_start: float,
    segment_end: float,
    permissions: Permissions = Permissions.PROJECT_SPECIFIC_PERMISSIONS,
) -> VideoSegmentResource:
    """
    Creates a new video segment resource, i.e. a time span of a MovingImageRepresentation.

    [See XML documentation for details](https://docs.dasch.swiss/latest/DSP-TOOLS/file-formats/xml-data-file/#video-segment-and-audio-segment)

    Args:
        res_id: ID of this video segment resource
        label: label of this video segment resource
        segment_of: ID of the video resource that this segment refers to (cardinality 1)
        segment_start: start of the segment in seconds (cardinality 1)
        segment_end: end of the segment in seconds (cardinality 1)
        permissions: permissions of this resource

    Returns:
        A video segment resource

    Examples:
        ```python
        video_segment = xmllib.VideoSegmentResource.create_new(
            res_id="ID",
            label="label",
            segment_of="video_resource_id",
            segment_start=1.2,
            segment_end=3.4,
        )
        ```
    """
    return VideoSegmentResource(
        res_id=res_id,
        label=label,
        segment_of=segment_of,
        segment_bounds=SegmentBounds(segment_start, segment_end, res_id),
        permissions=permissions,
    )

add_title

Add a title to the resource.

Parameters:

Name	Type	Description	Default
title	str	text	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added title

Examples:

video_segment = video_segment.add_title("segment title")

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_title(self, title: str) -> VideoSegmentResource:
    """
    Add a title to the resource.

    Args:
        title: text

    Returns:
        The original resource, with the added title

    Examples:
        ```python
        video_segment = video_segment.add_title("segment title")
        ```
    """
    if self.title:
        _warn_value_exists(old_value=self.title, new_value=title, value_field="title", res_id=self.res_id)
    self.title = title
    return self

add_title_optional

If the value is not empty, add it as title, otherwise return the resource unchanged.

Parameters:

Name	Type	Description	Default
title	Any	text or empty value	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added title

Examples:

video_segment = video_segment.add_title("segment title")

video_segment = video_segment.add_title(None)

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_title_optional(self, title: Any) -> VideoSegmentResource:
    """
    If the value is not empty, add it as title, otherwise return the resource unchanged.

    Args:
        title: text or empty value

    Returns:
        The original resource, with the added title

    Examples:
        ```python
        video_segment = video_segment.add_title("segment title")
        ```

        ```python
        video_segment = video_segment.add_title(None)
        ```
    """
    if is_nonempty_value(title):
        if self.title:
            _warn_value_exists(old_value=self.title, new_value=title, value_field="title", res_id=self.res_id)
        self.title = title
    return self

add_comment

Add a comment to the resource

Parameters:

Name	Type	Description	Default
text	str	text	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added comment

Examples:

video_segment = video_segment.add_comment("comment text")

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_comment(
    self,
    text: str,
) -> VideoSegmentResource:
    """
    Add a comment to the resource

    Args:
        text: text

    Returns:
        The original resource, with the added comment

    Examples:
        ```python
        video_segment = video_segment.add_comment("comment text")
        ```
    """
    self.comments.append(text)
    return self

add_comment_multiple

Add several comments to the resource

Parameters:

Name	Type	Description	Default
texts	Collection[str]	list of texts	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added comments

Examples:

video_segment = video_segment.add_comment_multiple(["comment 1", "comment 2"])

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_comment_multiple(
    self,
    texts: Collection[str],
) -> VideoSegmentResource:
    """
    Add several comments to the resource

    Args:
        texts: list of texts

    Returns:
        The original resource, with the added comments

    Examples:
        ```python
        video_segment = video_segment.add_comment_multiple(["comment 1", "comment 2"])
        ```
    """
    vals = check_and_fix_collection_input(texts, "hasComment", self.res_id)
    self.comments.extend(vals)
    return self

add_comment_optional

If the value is not empty, add it as comment, otherwise return the resource unchanged.

Parameters:

Name	Type	Description	Default
text	Any	text of the comment (or empty value)	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added comment

Examples:

video_segment = video_segment.add_comment_optional("comment text")

video_segment = video_segment.add_comment_optional(None)

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_comment_optional(
    self,
    text: Any,
) -> VideoSegmentResource:
    """
    If the value is not empty, add it as comment, otherwise return the resource unchanged.

    Args:
        text: text of the comment (or empty value)

    Returns:
        The original resource, with the added comment

    Examples:
        ```python
        video_segment = video_segment.add_comment_optional("comment text")
        ```

        ```python
        video_segment = video_segment.add_comment_optional(None)
        ```
    """
    if is_nonempty_value(text):
        self.comments.append(text)
    return self

add_description

Add a description to the resource

Parameters:

Name	Type	Description	Default
description	str	text	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added description

Examples:

video_segment = video_segment.add_description("description text")

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_description(self, description: str) -> VideoSegmentResource:
    """
    Add a description to the resource

    Args:
        description: text

    Returns:
        The original resource, with the added description

    Examples:
        ```python
        video_segment = video_segment.add_description("description text")
        ```
    """
    self.descriptions.append(description)
    return self

add_description_multiple

Add several descriptions to the resource

Parameters:

Name	Type	Description	Default
descriptions	Collection[str]	list of texts	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added descriptions

Examples:

video_segment = video_segment.add_description_multiple(["description 1", "description 2"])

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_description_multiple(self, descriptions: Collection[str]) -> VideoSegmentResource:
    """
    Add several descriptions to the resource

    Args:
        descriptions: list of texts

    Returns:
        The original resource, with the added descriptions

    Examples:
        ```python
        video_segment = video_segment.add_description_multiple(["description 1", "description 2"])
        ```
    """
    vals = check_and_fix_collection_input(descriptions, "description", self.res_id)
    self.descriptions.extend(vals)
    return self

add_description_optional

If the value is not empty, add it as description, otherwise return the resource unchanged.

Parameters:

Name	Type	Description	Default
description	Any	text or empty value	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added description

Examples:

video_segment = video_segment.add_description_optional("description text")

video_segment = video_segment.add_description_optional(None)

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_description_optional(self, description: Any) -> VideoSegmentResource:
    """
    If the value is not empty, add it as description, otherwise return the resource unchanged.

    Args:
        description: text or empty value

    Returns:
        The original resource, with the added description

    Examples:
        ```python
        video_segment = video_segment.add_description_optional("description text")
        ```

        ```python
        video_segment = video_segment.add_description_optional(None)
        ```
    """
    if is_nonempty_value(description):
        self.descriptions.append(description)
    return self

add_keyword

Add a keyword to the resource

Parameters:

Name	Type	Description	Default
keyword	str	text	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added keyword

Examples:

video_segment = video_segment.add_keyword("keyword")

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_keyword(self, keyword: str) -> VideoSegmentResource:
    """
    Add a keyword to the resource

    Args:
        keyword: text

    Returns:
        The original resource, with the added keyword

    Examples:
        ```python
        video_segment = video_segment.add_keyword("keyword")
        ```
    """
    self.keywords.append(keyword)
    return self

add_keyword_multiple

Add several keywords to the resource

Parameters:

Name	Type	Description	Default
keywords	Collection[str]	list of texts	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added keywords

Examples:

video_segment = video_segment.add_keyword_multiple(["keyword 1", "keyword 2"])

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_keyword_multiple(self, keywords: Collection[str]) -> VideoSegmentResource:
    """
    Add several keywords to the resource

    Args:
        keywords: list of texts

    Returns:
        The original resource, with the added keywords

    Examples:
        ```python
        video_segment = video_segment.add_keyword_multiple(["keyword 1", "keyword 2"])
        ```
    """
    vals = check_and_fix_collection_input(keywords, "keywords", self.res_id)
    self.keywords.extend(vals)
    return self

add_keyword_optional

If the value is not empty, add it as keyword, otherwise return the resource unchanged.

Parameters:

Name	Type	Description	Default
keyword	Any	text or empty value	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added keyword

Examples:

video_segment = video_segment.add_keyword_optional("keyword")

video_segment = video_segment.add_keyword_optional(None)

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_keyword_optional(self, keyword: Any) -> VideoSegmentResource:
    """
    If the value is not empty, add it as keyword, otherwise return the resource unchanged.

    Args:
        keyword: text or empty value

    Returns:
        The original resource, with the added keyword

    Examples:
        ```python
        video_segment = video_segment.add_keyword_optional("keyword")
        ```

        ```python
        video_segment = video_segment.add_keyword_optional(None)
        ```
    """
    if is_nonempty_value(keyword):
        self.keywords.append(keyword)
    return self

add_relates_to

Add a link to a related resource

Parameters:

Name	Type	Description	Default
relates_to	str	ID of the related resource	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added related resource

Examples:

video_segment = video_segment.add_relates_to("target_resource_id")

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_relates_to(self, relates_to: str) -> VideoSegmentResource:
    """
    Add a link to a related resource

    Args:
        relates_to: ID of the related resource

    Returns:
        The original resource, with the added related resource

    Examples:
        ```python
        video_segment = video_segment.add_relates_to("target_resource_id")
        ```
    """
    self.relates_to.append(relates_to)
    return self

add_relates_to_multiple

Add several links to related resources

Parameters:

Name	Type	Description	Default
relates_to	Collection[str]	list of IDs of the related resources	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added related resources

Examples:

video_segment = video_segment.add_relates_to_multiple(["target_resource_id_1", "target_resource_id_2"])

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_relates_to_multiple(self, relates_to: Collection[str]) -> VideoSegmentResource:
    """
    Add several links to related resources

    Args:
        relates_to: list of IDs of the related resources

    Returns:
        The original resource, with the added related resources

    Examples:
        ```python
        video_segment = video_segment.add_relates_to_multiple(["target_resource_id_1", "target_resource_id_2"])
        ```
    """
    vals = check_and_fix_collection_input(relates_to, "relatesTo", self.res_id)
    self.relates_to.extend(vals)
    return self

add_relates_to_optional

If the value is not empty, add it as related resource, otherwise return the resource unchanged.

Parameters:

Name	Type	Description	Default
relates_to	Any	ID or the related resource or empty value	required

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added related resources

Examples:

video_segment = video_segment.add_relates_to_optional("target_resource_id")

video_segment = video_segment.add_relates_to_optional(None)

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_relates_to_optional(self, relates_to: Any) -> VideoSegmentResource:
    """
    If the value is not empty, add it as related resource, otherwise return the resource unchanged.

    Args:
        relates_to: ID or the related resource or empty value

    Returns:
        The original resource, with the added related resources

    Examples:
        ```python
        video_segment = video_segment.add_relates_to_optional("target_resource_id")
        ```

        ```python
        video_segment = video_segment.add_relates_to_optional(None)
        ```
    """
    if is_nonempty_value(relates_to):
        self.relates_to.append(relates_to)
    return self

add_migration_metadata

Add metadata from a SALSAH migration.

Parameters:

Name	Type	Description	Default
creation_date	str | None	creation date of the resource in SALSAH	required
iri	str | None	Original IRI in SALSAH	None
ark	str | None	Original ARK in SALSAH	None

Returns:

Type	Description
VideoSegmentResource	The original resource, with the added metadata

Examples:

video_segment = video_segment.add_migration_metadata(
    iri="http://rdfh.ch/4123/DiAmYQzQSzC7cdTo6OJMYA",
    creation_date="1999-12-31T23:59:59.9999999+01:00"
)

Source code in dsp/dsp-tools/src/dsp_tools/xmllib/models/dsp_base_resources.py

def add_migration_metadata(
    self, creation_date: str | None, iri: str | None = None, ark: str | None = None
) -> VideoSegmentResource:
    """
    Add metadata from a SALSAH migration.

    Args:
        creation_date: creation date of the resource in SALSAH
        iri: Original IRI in SALSAH
        ark: Original ARK in SALSAH

    Raises:
        InputError: if metadata already exists

    Returns:
        The original resource, with the added metadata

    Examples:
        ```python
        video_segment = video_segment.add_migration_metadata(
            iri="http://rdfh.ch/4123/DiAmYQzQSzC7cdTo6OJMYA",
            creation_date="1999-12-31T23:59:59.9999999+01:00"
        )
        ```
    """
    if self.migration_metadata:
        raise InputError(
            f"The resource with the ID '{self.res_id}' already contains migration metadata, "
            f"no new data can be added."
        )
    self.migration_metadata = MigrationMetadata(creation_date=creation_date, iri=iri, ark=ark, res_id=self.res_id)
    return self