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import json
from typing import Any, Dict, List
from graphgen.bases.base_reader import BaseReader
class JSONReader(BaseReader):
"""
Reader for JSON files.
Columns:
- type: The type of the document (e.g., "text", "image", etc.)
- if type is "text", "content" column must be present.
"""
def read(self, file_path: str) -> List[Dict[str, Any]]:
with open(file_path, "r", encoding="utf-8") as f:
data = json.load(f)
if isinstance(data, list):
for doc in data:
assert "type" in doc, f"Missing 'type' in document: {doc}"
if doc.get("type") == "text" and self.text_column not in doc:
raise ValueError(
f"Missing '{self.text_column}' in document: {doc}"
)
return self.filter(data)
raise ValueError("JSON file must contain a list of documents.")
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