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from dataclasses import dataclass
from typing import Any
from lxml.etree import ElementTree
from xsdata.formats.dataclass.serializers.mixins import EventGenerator
from xsdata.formats.dataclass.serializers.writers.lxml import LxmlTreeBuilder
from xsdata.utils import namespaces
@dataclass
class TreeSerializer(EventGenerator):
"""Lxml tree serializer for data classes.
Args:
config: The serializer config instance
context: The models context instance
"""
def render(self, obj: Any, ns_map: dict | None = None) -> ElementTree:
"""Serialize the input model instance to a lxml etree instance.
Args:
obj: The input model instance to serialize
ns_map: A user defined namespace prefix-URI map
Returns:
The element tree instance.
"""
builder = LxmlTreeBuilder(
config=self.config,
ns_map=namespaces.clean_prefixes(ns_map) if ns_map else {},
)
return builder.build(self.generate(obj))
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