trustgraph/docs/tech-specs/schema-refactoring-proposal.md
Alex Jenkins 8954fa3ad7 Feat: TrustGraph i18n & Documentation Translation Updates (#781)
Native CLI i18n: The TrustGraph CLI has built-in translation support
that dynamically loads language strings. You can test and use
different languages by simply passing the --lang flag (e.g., --lang
es for Spanish, --lang ru for Russian) or by configuring your
environment's LANG variable.

Automated Docs Translations: This PR introduces autonomously
translated Markdown documentation into several target languages,
including Spanish, Swahili, Portuguese, Turkish, Hindi, Hebrew,
Arabic, Simplified Chinese, and Russian.
2026-04-14 12:08:32 +01:00

97 lines
4.2 KiB
Markdown

---
layout: default
title: "Schema Directory Refactoring Proposal"
parent: "Tech Specs"
---
# Schema Directory Refactoring Proposal
## Current Issues
1. **Flat structure** - All schemas in one directory makes it hard to understand relationships
2. **Mixed concerns** - Core types, domain objects, and API contracts all mixed together
3. **Unclear naming** - Files like "object.py", "types.py", "topic.py" don't clearly indicate their purpose
4. **No clear layering** - Can't easily see what depends on what
## Proposed Structure
```
trustgraph-base/trustgraph/schema/
├── __init__.py
├── core/ # Core primitive types used everywhere
│ ├── __init__.py
│ ├── primitives.py # Error, Value, Triple, Field, RowSchema
│ ├── metadata.py # Metadata record
│ └── topic.py # Topic utilities
├── knowledge/ # Knowledge domain models and extraction
│ ├── __init__.py
│ ├── graph.py # EntityContext, EntityEmbeddings, Triples
│ ├── document.py # Document, TextDocument, Chunk
│ ├── knowledge.py # Knowledge extraction types
│ ├── embeddings.py # All embedding-related types (moved from multiple files)
│ └── nlp.py # Definition, Topic, Relationship, Fact types
└── services/ # Service request/response contracts
├── __init__.py
├── llm.py # TextCompletion, Embeddings, Tool requests/responses
├── retrieval.py # GraphRAG, DocumentRAG queries/responses
├── query.py # GraphEmbeddingsRequest/Response, DocumentEmbeddingsRequest/Response
├── agent.py # Agent requests/responses
├── flow.py # Flow requests/responses
├── prompt.py # Prompt service requests/responses
├── config.py # Configuration service
├── library.py # Librarian service
└── lookup.py # Lookup service
```
## Key Changes
1. **Hierarchical organization** - Clear separation between core types, knowledge models, and service contracts
2. **Better naming**:
- `types.py``core/primitives.py` (clearer purpose)
- `object.py` → Split between appropriate files based on actual content
- `documents.py``knowledge/document.py` (singular, consistent)
- `models.py``services/llm.py` (clearer what kind of models)
- `prompt.py` → Split: service parts to `services/prompt.py`, data types to `knowledge/nlp.py`
3. **Logical grouping**:
- All embedding types consolidated in `knowledge/embeddings.py`
- All LLM-related service contracts in `services/llm.py`
- Clear separation of request/response pairs in services directory
- Knowledge extraction types grouped with other knowledge domain models
4. **Dependency clarity**:
- Core types have no dependencies
- Knowledge models depend only on core
- Service contracts can depend on both core and knowledge models
## Migration Benefits
1. **Easier navigation** - Developers can quickly find what they need
2. **Better modularity** - Clear boundaries between different concerns
3. **Simpler imports** - More intuitive import paths
4. **Future-proof** - Easy to add new knowledge types or services without cluttering
## Example Import Changes
```python
# Before
from trustgraph.schema import Error, Triple, GraphEmbeddings, TextCompletionRequest
# After
from trustgraph.schema.core import Error, Triple
from trustgraph.schema.knowledge import GraphEmbeddings
from trustgraph.schema.services import TextCompletionRequest
```
## Implementation Notes
1. Keep backward compatibility by maintaining imports in root `__init__.py`
2. Move files gradually, updating imports as needed
3. Consider adding a `legacy.py` that imports everything for transition period
4. Update documentation to reflect new structure
<function_calls>
<invoke name="TodoWrite">
<parameter name="todos">[{"id": "1", "content": "Examine current schema directory structure", "status": "completed", "priority": "high"}, {"id": "2", "content": "Analyze schema files and their purposes", "status": "completed", "priority": "high"}, {"id": "3", "content": "Propose improved naming and structure", "status": "completed", "priority": "high"}]