Export to GraphML

This page walks through exporting a graph to a GraphML file using gqldb-exporter. Unlike the CSV / JSON exports, GraphML produces a single file that contains both nodes and edges.

Usage Guides

Generate Configuration File

Bash
./gqldb-exporter -sample graphml

A file named export.sample.graphml.yml will be created in the current directory. Rename it before editing so a re-run of -sample graphml doesn't clobber your changes:

Bash
mv export.sample.graphml.yml export.graphml.yml

Modify Configuration File

Edit export.graphml.yml to point at your source graph and choose an output directory. See the Export Configurations for every field.

config snippet
settings:
  format: graphml
  output_path: "./exported"
  batch_size: 5000
  export_nodes: true
  export_edges: true
  include_metadata: true
  log_level: info

The nodes_file / edges_file fields don't apply — GraphML always produces a single combined file.

Execute Export

Bash
./gqldb-exporter -c export.graphml.yml

Output Layout

The exporter writes a single graph.graphml file in output_path:

Directory layout
exported/
└── graph.graphml

File Structure

The output is standard GraphML:

• Each node label becomes a <data> attribute on <node> elements, with a configurable key name.
• Each edge label becomes a <data> attribute on <edge> elements.
• Every property becomes its own <data> element, declared via <key> headers at the top of the file.

The exported file round-trips through the GraphML import — set the importer's schemaAttr to the same key name to recover the original labels.