Merge pull request #1 from microsoft/user/tpellissier/init

Initial proof-of-concept implementation

Author: tpellissier-msft

.gitignore

@@ -1,14 +1,157 @@
-# Project
+# Dataverse SDK (Python) — Proof of Concept
 
-> This repo has been populated by an initial template to help get you started. Please
-> make sure to update the content to build a great experience for community-building.
+A minimal Python SDK to use Microsoft Dataverse as a database for Azure AI Foundry–style apps.
 
-As the maintainer of this project, please make a few updates:
+- Read (SQL) — Execute read-only T‑SQL via the McpExecuteSqlQuery Custom API. Returns `list[dict]`.
+- OData CRUD — Thin wrappers over Dataverse Web API (create/get/update/delete).
+- Metadata helpers — Create/inspect/delete simple custom tables (EntityDefinitions + Attributes).
+- Pandas helpers — Convenience DataFrame oriented wrappers for quick prototyping/notebooks.
+- Auth — Azure Identity (`TokenCredential`) injection.
 
-- Improving this README.MD file to provide a great experience
-- Updating SUPPORT.MD with content about this project's support experience
-- Understanding the security reporting process in SECURITY.MD
-- Remove this section from the README
+## Features
+
+- Simple `DataverseClient` facade for CRUD, SQL (read-only), and table metadata.
+- SQL-over-API: T-SQL routed through Custom API endpoint (no ODBC / TDS driver required).
+- Table metadata ops: create simple custom tables with primitive columns (string/int/decimal/float/datetime/bool) and delete them.
+- Optional pandas integration (`PandasODataClient`) for DataFrame based create / get / query.
+
+Auth:
+- Credential is optional; if omitted, the SDK uses `DefaultAzureCredential`.
+- You can pass any `azure.core.credentials.TokenCredential` you prefer; examples use `InteractiveBrowserCredential` for local runs.
+- Token scope used by the SDK: `https://<yourorg>.crm.dynamics.com/.default` (derived from `base_url`).
+
+## Install
+
+Create and activate a Python 3.13+ environment, then install dependencies:
+
+```powershell
+# from the repo root
+python -m pip install -r requirements.txt
+```
+
+Direct TDS via ODBC is not used; SQL reads are executed via the Custom API over OData.
+
+## Configuration Notes
+
+- For Web API (OData), tokens target your Dataverse org URL scope: https://yourorg.crm.dynamics.com/.default. The SDK requests this scope from the provided TokenCredential.
+- For complete functionalities, please use one of the PREPROD BAP environments, otherwise McpExecuteSqlQuery might not work.
+
+### Configuration (DataverseConfig)
+
+Pass a `DataverseConfig` or rely on sane defaults:
+
+```python
+from dataverse_sdk import DataverseClient
+from dataverse_sdk.config import DataverseConfig
+
+cfg = DataverseConfig()  # defaults: language_code=1033, sql_api_name="McpExecuteSqlQuery"
+client = DataverseClient(base_url="https://yourorg.crm.dynamics.com", config=cfg)
+
+# Optional HTTP tunables (timeouts/retries)
+# cfg.http_retries, cfg.http_backoff, cfg.http_timeout
+```
+
+## Quickstart
+
+Edit `examples/quickstart.py` and run:
+
+```powershell
+python examples/quickstart.py
+```
+
+The quickstart demonstrates:
+- Creating a simple custom table (metadata APIs)
+- Creating, reading, updating, and deleting records (OData)
+- Executing a read-only SQL query
+
+## Examples
+
+### DataverseClient (recommended)
+
+Tip: You can omit the credential and the SDK will use `DefaultAzureCredential` automatically:
+
+```python
+from dataverse_sdk import DataverseClient
+
+base_url = "https://yourorg.crm.dynamics.com"
+client = DataverseClient(base_url=base_url)  # uses DefaultAzureCredential by default
+```
+
+```python
+from azure.identity import DefaultAzureCredential
+from dataverse_sdk import DataverseClient
+
+base_url = "https://yourorg.crm.dynamics.com"
+client = DataverseClient(base_url=base_url, credential=DefaultAzureCredential())
+
+# Create (returns created record)
+created = client.create("accounts", {"name": "Acme, Inc.", "telephone1": "555-0100"})
+account_id = created["accountid"]
+
+# Read
+account = client.get("accounts", account_id)
+
+# Update (returns updated record)
+updated = client.update("accounts", account_id, {"telephone1": "555-0199"})
+
+# Delete
+client.delete("accounts", account_id)
+
+# SQL (read-only) via Custom API
+rows = client.query_sql("SELECT TOP 3 accountid, name FROM account ORDER BY createdon DESC")
+for r in rows:
+	print(r.get("accountid"), r.get("name"))
+```
+
+### Custom table (metadata) example
+
+```python
+# Create a simple custom table and a few primitive columns
+info = client.create_table(
+	"SampleItem",  # friendly name; defaults to SchemaName new_SampleItem
+	{
+		"code": "string",
+		"count": "int",
+		"amount": "decimal",
+		"when": "datetime",
+		"active": "bool",
+	},
+)
+
+entity_set = info["entity_set_name"]  # e.g., "new_sampleitems"
+logical = info["entity_logical_name"]  # e.g., "new_sampleitem"
+
+# Create a record in the new table
+# Set your publisher prefix (used when creating the table). If you used the default, it's "new".
+prefix = "new"
+name_attr = f"{prefix}_name"
+id_attr = f"{logical}id"
+
+rec = client.create(entity_set, {name_attr: "Sample A"})
+
+# Clean up
+client.delete(entity_set, rec[id_attr])  # delete record
+client.delete_table("SampleItem")        # delete the table
+```
+
+Notes:
+- `create/update` return the full record using `Prefer: return=representation`.
+- For CRUD methods that take a record id, pass the GUID string (36-char hyphenated). Parentheses around the GUID are accepted but not required.
+- SQL is routed through the Custom API named in `DataverseConfig.sql_api_name` (default: `McpExecuteSqlQuery`).
+
+
+
+### Pandas helpers
+
+See `examples/quickstart_pandas.py` for a DataFrame workflow via `PandasODataClient`.
+
+VS Code Tasks
+- Install deps: `Install deps (pip)`
+- Run example: `Run Quickstart (Dataverse SDK)`
+
+## Limitations / Future Work
+- No batching, upsert, or association operations yet.
+- Minimal retry policy in library (network-error only); examples include additional backoff for transient Dataverse consistency.
 
 ## Contributing