Considerations for the Apex Connector Framework

Understand the limits and considerations for creating Lightning Connect custom adapters with the Apex Connector Framework.
  • Make sure that you understand the limits of the external system’s APIs. For example, some external systems accept only requests for up to 40 rows.
  • Data type limitations:
    • Double—The value loses precision beyond 18 significant digits. For higher precision, use decimals instead of doubles.
    • String—If the length is greater than 255 characters, the string is mapped to a long text area field in Salesforce.
  • Custom adapters for Lightning Connect are subject to the same limitations as any other Apex code. For example:
    • All Apex governor limits apply.
    • Apex callouts aren’t allowed after data manipulation language (DML) operations in the same transaction. This means that within the same transaction, you can't update a Salesforce record and then do an Apex callout.
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