> ## Documentation Index
> Fetch the complete documentation index at: https://codegeninc-codegen-bot-sdk-docs-2-0.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.
# Neo4j Graph
# Neo4j Graph
Codegen can export codebase graphs to Neo4j for visualization and analysis.
## Installation
In order to use Neo4j you will need to install it and run it locally using Docker.
### Neo4j
First, install Neo4j using the official [installation guide](https://neo4j.com/docs/desktop-manual/current/installation/download-installation/).
### Docker
To run Neo4j locally using Docker, follow the instructions [here](https://neo4j.com/docs/apoc/current/installation/#docker).
## Launch Neo4j Locally
```bash
docker run \
-p 7474:7474 -p 7687:7687 \
-v $PWD/data:/data -v $PWD/plugins:/plugins \
--name neo4j-apoc \
-e NEO4J_apoc_export_file_enabled=true \
-e NEO4J_apoc_import_file_enabled=true \
-e NEO4J_apoc_import_file_use__neo4j__config=true \
-e NEO4J_PLUGINS=\[\"apoc\"\] \
neo4j:latest
```
## Usage
```python
from codegen import Codebase
from codegen.extensions.graph.main import visualize_codebase
# parse codebase
codebase = Codebase("path/to/codebase")
# export to Neo4j
visualize_codebase(codebase, "bolt://localhost:7687", "neo4j", "password")
```
## Visualization
Once exported, you can open the Neo4j browser at `http://localhost:7474`, sign in with the username `neo4j` and the password `password`, and use the following Cypher queries to visualize the codebase:
### Class Hierarchy
```cypher
Match (s: Class )-[r: INHERITS_FROM*]-> (e:Class) RETURN s, e LIMIT 10
```
### Methods Defined by Each Class
```cypher
Match (s: Class )-[r: DEFINES]-> (e:Method) RETURN s, e LIMIT 10
```
### Function Calls
```cypher
Match (s: Func )-[r: CALLS]-> (e:Func) RETURN s, e LIMIT 10
```
### Call Graph
```cypher
Match path = (:(Method|Func)) -[:CALLS*5..10]-> (:(Method|Func))
Return path
LIMIT 20
```