File Loader

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Node Details

• Name: File_DocumentLoaders
• Type: Document
• Category: Document Loaders
• Version: 1.0

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Input Parameters

1. File (required)

   • Type: file
   • Description: The file(s) to be loaded. Can accept multiple file types.

2. Text Splitter (optional)

   • Type: TextSplitter
   • Description: A text splitter to chunk the loaded documents.

3. Pdf Usage (optional)

   • Type: options
   • Description: Specifies how to process PDF files.
   • Options:
     • One document per page
     • One document per file
   • Default: One document per page

4. JSONL Pointer Extraction (optional)

   • Type: string
   • Description: Specifies the pointer for extracting data from JSONL files.

5. Additional Metadata (optional)

   • Type: json
   • Description: Additional metadata to be added to the extracted documents.

6. Omit Metadata Keys (optional)

   • Type: string
   • Description: Comma-separated list of metadata keys to omit from the default set. Use ’*’ to omit all default metadata.

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Supported File Types

• Text (.txt)
• JSON (.json)
• JSON Lines (.jsonl)
• CSV (.csv)
• Excel (.xls, .xlsx)
• Word (.docx, .doc)
• PDF (.pdf)
• YAML (.yaml)

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Functionality

1. The node accepts file inputs either as base64-encoded strings or references to files in storage.
2. It determines the file type and uses the appropriate loader for each file.
3. If a text splitter is provided, it splits the loaded documents.
4. Additional metadata is added to each document if specified.
5. Specified metadata keys are omitted if requested.

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Output

The node outputs an array of Document objects, each containing:

• The content of the loaded file (or a chunk of it if split)
• Metadata associated with the document

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Use Cases

• Loading and preprocessing documents for language models
• Preparing data for text analysis or NLP tasks
• Batch processing of multiple files of various formats
• Customizing document metadata for specific applications

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Notes

• The node uses various loaders from the LangChain library to handle different file types.
• It includes special handling for PDF files, allowing for per-page or per-file document creation.
• The node supports both local file uploads and files stored in a file storage system.