15.5.1.1.1 Loading Vertex Providers

You can add a vertex provider, by calling alterationBuilder.addVertexProvider(EntityProviderConfig vertexProviderConfig). vertexProviderConfig is a vertex provider configuration and it provides configuration details such as:

• location of the datasource to load from
• the stored format
• properties of the vertex provider

Additionally, you can also add the provider by calling alterationBuilder.addVertexProvider(String pathToVertexProviderConfig) where pathToVertexProviderConfig points to a file accessible from the client that contains a JSON representation of a vertex provider configuration.

For example, the vertex provider can be added in the alteration as shown:

// loading by indicating the path to the JSON file
alterationBuilder.addVertexProvider("<path-to-vertex-provider-configuration>");

// or by first loading the content of a JSON file into an EntityProviderConfig object
EntityProviderConfig vertexProviderConfig = new AnyFormatEntityProviderConfigFactory().fromPath("<path-to-vertex-provider-configuration>");
alterationBuilder.addVertexProvider(vertexProviderConfig);

Alternatively, the vertex provider configuration can be built programmatically:

FileEntityProviderConfigBuilder vertexProviderConfigBuilder = new FileEntityProviderConfigBuilder().
  setFormat().
  setName("typicalVertexProvider").
  setUris("").
  setKeyColumn(1).
  addProperty("prop1", PropertyType.STRING, null, 2).
  addProperty("prop2", PropertyType.LOCAL_DATE, null, 3);

EntityProviderConfig vertexProviderConfig = vertexProviderConfigBuilder.build();

alterationBuilder.addVertexProvider(vertexProviderConfig);