Adding types to an i2 Analyze deployment
The data that you retrieve from an external source through the i2® Connect gateway must have entity and link types that are defined somewhere in the i2 Analyze deployment. If none of the existing schemas contains types that correspond with the external data, then you must extend or write a new schema as part of connector development.
If the data that you can retrieve from the external source is compatible with existing schema types, and your connector does not need to define its own types, then you can skip this task. Otherwise, you need to add type definitions to the i2 Analyze deployment.
There are two ways to add types to an existing deployment of i2 Analyze:
- Add the new entity, link, and property types directly to one of the deployed schemas in the usual way. Additive changes to schemas are always allowed.
- Create a gateway or connector schema (along with an accompanying charting scheme), and define the new item types in that schema.
Choosing which approach to use depends on your aims:
- Adding types to the Information Store schema makes them immediately and permanently available throughout the i2 Analyze deployment. Users can upload records that they retrieve from the external source to the Information Store without any further intervention.
- Especially in a deployment that does not include the Information Store, adding types to an existing gateway schema has some of the same benefits. The new types appear at familiar locations in the Analyst's Notebook Premium user interface, and they become available to future connectors.
- A key reason for creating a gateway schema to contain your new types is when you are creating a library of connectors that provide access to a particular source. The types in the gateway schema can be shared by all the connectors, and you can provide the gateway schema alongside the connectors if you need to distribute them.
- Creating a connector schema provides the highest level of flexibility. You can add the connector with its schema to any i2 Analyze deployment that includes the i2 Connect gateway. And you can make modifications to the connector schema without affecting the other schemas. But by its nature, this approach is also the least well integrated with the rest of the deployment.
- If you decide to extend one of the deployed schemas, you can do so in the same way that you would add types for any other reason:
For more information, see the Schema Designer user guide, and the documentation on modifying the Information Store schema and modifying gateway schemas.
- Open the XML file that contains the deployed schema in Schema Designer.
- Add entity and link types (or property types) to the schema that correspond to data from the external source.
- Add configuration for new and modified entity and link types to the charting scheme.
- Update the deployment with the modified schema and charting scheme.
- If you decide to create a schema, then you still use Schema Designer, but the process is different:
- In Schema Designer, select File > New Schema.
- Edit the schema and its charting scheme to add types for the data from the external source, and then save and close the XML files.
- To deploy a gateway schema, make it (and its charting scheme) available to the deployment toolkit, and then follow the instructions in Adding, removing, and modifying gateway schemas.
- To deploy a connector schema, arrange for it (and its charting scheme) to be available from endpoints on the server that hosts the connector.To complete this approach, you must tell the i2 Connect gateway where to find the endpoints that you created. You provide that information by adding to your implementation of the configuration endpoint.