mets_to_edm

mets_to_edm is a Python library for converting METS/MODS XML records into Europeana Data Model (EDM) records. It can be used both as a library and from the command line and has a basic Mapping that should work well for most cases. But the library also provides a flexible mapping layer to override certain parts.

Features

• Converts METS/MODS XML to EDM using edmlib
• Easily extensible: override mapping methods to customize output
• CLI and Python API

Installation

Install via Poetry (recommended):

poetry install

Or with pip (if you have all dependencies):

pip install .

Usage

As a Python Library

from mets_to_edm import MetsToEdmMapper
from lxml import etree

# Parse your METS/MODS XML file
xml_tree = etree.parse("example.xml")

# Convert to an EDM record
edmlib_record = MetsToEdmMapper.process_record(xml_tree)

# Serialize to EDM XML
edm_xml = edmlib_record.serialize()
print(edm_xml)

From the Command Line

python -m mets_to_edm example.xml "Provider Name" [--data-provider "Data Provider"]

• "Provider Name": the institution name to be filled in as edm:provider (the aggregator providing the data to europeana)
• "Data Provider": the institution name to be filled in as edm:dataProvider (the Organisation where the data originates from). Optional as it will otherwise be extracted from the amdSec using XPath "mets:rightsMD/mets:mdWrap/mets:xmlData/dv:rights/dv:owner"

Customizing the Mapping

To change how specific fields are mapped, subclass MetsToEdmMapper and override the relevant class methods. For example, to change how titles are extracted: You can override any method such as:

• get_titles
• get_descriptions
• get_publishers
• get_types
• get_languages
• ...and more (see mets_to_edm/mapper.py for all available hooks)

Example: Overriding the Data Provider

class MyMapper(MetsToEdmMapper):
	@classmethod
	def get_data_provider(cls, dmd_sec, amd_sec, default=None):
		return "My Custom Data Provider"

# Usage:
# edmlib_record = MyCustomMapper.process_record(tree)

For more examples have a look at the examples directory.

Further Information

• See the source code in mets_to_edm/mapper.py for all overridable methods and mapping logic.
• For questions or contributions, open an issue or pull request.